UC20 Hardware Design UMTS/HSPA Module Series Rev. UC20_Hardware_Design_V1.2 Date: 2014-01-13 www.quectel.
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UMTS/HSPA Module Series UC20 Hardware Design About the Document History Revision Date Author Description 1.0 2013-07-17 Mountain ZHOU Initial Mountain ZHOU 1. 2. 3. 4. 5. Updated USB driver information. Added GNSS contents in Chapter 4. Added GNSS current consumption. Updated GNSS antenna requirements. Released USIM_PRESENCE function. 1. 2. 3. 4. Added UC20-G information. Added AMR-WB feature. Added USB upgrade test points’ diagram.
UMTS/HSPA Module Series UC20 Hardware Design Contents About the Document ................................................................................................................................... 2 Contents ....................................................................................................................................................... 3 Table Index .................................................................................................................................
UMTS/HSPA Module Series UC20 Hardware Design 3.10. UART Interface ........................................................................................................................ 38 3.11. USIM Card Interface ................................................................................................................ 42 3.11.1. USIM Card Application ................................................................................................... 42 3.11.2.
UMTS/HSPA Module Series UC20 Hardware Design 8.2. 8.3. 9 Manufacturing and Welding ..................................................................................................... 74 Packaging ................................................................................................................................ 75 Appendix A Reference.......................................................................................................................
UMTS/HSPA Module Series UC20 Hardware Design Table Index TABLE 1: UC20 SERIES FREQUENCY BANDS ............................................................................................... 11 TABLE 2: UC20 KEY FEATURES ..................................................................................................................... 13 TABLE 3: IO PARAMETERS DEFINITION ........................................................................................................ 19 TABLE 4: PIN DESCRIPTION ...
UMTS/HSPA Module Series UC20 Hardware Design Figure Index FIGURE 1: FUNCTIONAL DIAGRAM ........................................................................................................ 16 FIGURE 2: PIN ASSIGNMENT (TOP VIEW)............................................................................................. 18 FIGURE 3: UART SLEEP APPLICATION .................................................................................................. 26 FIGURE 4: USB APPLICATION WITH SUSPEND FUNCTION .
UMTS/HSPA Module Series UC20 Hardware Design FIGURE 42: BOTTOM PADS DIMENSIONS (BOTTOM VIEW) ............................................................... 71 FIGURE 43: RECOMMENDED FOOTPRINT (TOP VIEW) ...................................................................... 72 FIGURE 44: TOP VIEW OF THE MODULE .............................................................................................. 73 FIGURE 45: BOTTOM VIEW OF THE MODULE ................................................................
UMTS/HSPA Module Series UC20 Hardware Design 1 Introduction This document defines the UC20 module and describes its hardware interface which are connected with your application and the air interface. This document can help you quickly understand module interface specifications, electrical and mechanical details. Associated with application notes and user guide, you can use UC20 module to design and set up mobile applications easily.
UMTS/HSPA Module Series UC20 Hardware Design 1.1. Safety Information The following safety precautions must be observed during all phases of the operation, such as usage, service or repair of any cellular terminal or mobile incorporating UC20 module. Manufacturers of the cellular terminal should send the following safety information to users and operating personnel and to incorporate these guidelines into all manuals supplied with the product.
UMTS/HSPA Module Series UC20 Hardware Design 2 Product Concept 2.1. General Description UC20 is an embedded HSPA+ engine with Rx-diversity. Its UMTS-based modem provides data connectivity on HSPA+, HSDPA, HSUPA, WCDMA, networks. It can also provide GPS/GLONASS and voice functionality for customers’ specific application. UC20 offers a maximum data rate of 14.4Mbps on downlink and 5.76Mbps on uplink in HSPA+/HSPA mode.
UMTS/HSPA Module Series UC20 Hardware Design 2.2.1. FCC Statement 1. This device complies with Part 15 of the FCC rules. Operation is subject to the following conditions: a) This device may not cause harmful interference. b) This device must accept any interference received, including interference that may cause undesired operation. 2. Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment. 2.2.2.
UMTS/HSPA Module Series UC20 Hardware Design Table 2: UC20 Key Features Feature Details Power Supply Supply voltage: 3.4V~4.3V Typical supply voltage: 3.8V UC20-A: UMTS850/1900 Frequency Bands HSPA R6: Max 14.4Mbps (DL)/Max 5.76Mbps (UL) UMTS R99: Max 384kbps (DL)/Max 384kbps (UL) Transmission Data CSD: 14.4kbps Transmitting Power Class 3 (22.5dBm+1/-1dB) for UMTS 850/1900/ HSPA and UMTS Features HSPA data rate is corresponded with 3GPP R6. 14.4Mbps on downlink and 5.76Mbps on uplink.
UMTS/HSPA Module Series UC20 Hardware Design Main UART interface: Seven lines on main UART interface Support RTS and CTS hardware flow control Baud rate can reach up to 921600bps, 115200bps by default Used for AT command, data transmission or firmware upgrade Multiplexing function Debug UART interface: Two lines on debug UART interface: DBG_TXD and DBG_RXD Can be used for GNSS NMEA sentences output USB Interface Compliant with USB 2.
UMTS/HSPA Module Series UC20 Hardware Design 2.4. Functional Diagram The following figure shows a block diagram of UC20 and illustrates the major functional parts.
UMTS/HSPA Module Series UC20 Hardware Design ANT_GNSS RF Switch GSM VBAT_RF PCM WAKEUP_IN W_DISABLE# RF Switch Baseband RF Transceiver GNSS Receiver UART USB VBAT_BB VDD_EXT VDD_2V85 RESET_N ANT_DIV DDR RAM/ NAND Flash SLEEP_IND PWRKEY ANT_MAIN UMTS Power Management Unit ADC USIM STATUS VRTC 19.2MHz 32kHz Figure 1: Functional Diagram 2.5.
UMTS/HSPA Module Series UC20 Hardware Design 3 Application Interface 3.1. General Description UC20 is equipped with a 72-pin 1.3mm pitch SMT pads plus 40-pin ground pads and reserved pads that connect to cellular application platform.
UMTS/HSPA Module Series UC20 Hardware Design 3.2. Pin Assignment The following figure shows the pin assignment of the UC20 module.
UMTS/HSPA Module Series UC20 Hardware Design 3.3. Pin Description The following tables show the UC20’s pin definition. Table 3: IO Parameters Definition Type Description IO Bidirectional input/output DI Digital input DO Digital output PI Power input PO Power output AI Analog input AO Analog output OD Open drain Table 4: Pin Description Power Supply Pin Name VBAT_BB VBAT_RF VRTC Pin No.
UMTS/HSPA Module Series UC20 Hardware Design VDD_EXT 7 VDD_2V85 GND 34 PO Provide 1.8V for external circuit. Vnorm = 1.8V IOmax = 20mA Power supply for external GPIO’s pull up circuits. PO Provide 2.85V for external circuit. Vnorm = 2.85V IOmax = 100mA Power supply for external GNSS LNA, active antenna and other circuits. 8,9,19,36, 46,48,50~ 54,56,72, 85~112 Ground. Turn On/Off Pin Name PWRKEY RESET_N Pin No.
UMTS/HSPA Module Series UC20 Hardware Design USB_VBUS USB_DP USB_DM 71 69 70 PI USB detection. Vmax = 5.25V Vmin = 3.0V Vnorm = 5.0V IO USB differential data bus. Compliant with USB 2.0 standard specification. Require differential impedance of 90Ω. IO USB differential data bus. Compliant with USB 2.0 standard specification. Require differential impedance of 90Ω. I/O Description DC Characteristics Comment USIM Interface Pin Name Pin No. USIM_GND 10 Specified ground for USIM card.
UMTS/HSPA Module Series UC20 Hardware Design USIM_RST USIM_PRE SENCE 17 DO Reset signal of USIM card. For 1.8V USIM: VOLmax = 0.22V VOHmin = 1.44V For 3.0V USIM: VOLmax = 0.36V VOHmin = 2.4V 13 DI USIM card insertion detection. VILmin = -0.3V VILmax = 0.6V VIHmin = 1.2V VIHmax = 2.0V Pin No. I/O Description DC Characteristics AI General purpose analog to digital converter. Voltage range: 0.2V to 2.1V AI General purpose analog to digital converter. Voltage range: 0.2V to 4.2V 1.
UMTS/HSPA Module Series UC20 Hardware Design RXD 68 DI Receive data. VILmin = -0.3V VILmax = 0.6V VIHmin = 1.2V VIHmax = 2.0V 1.8V power domain. Debug UART Interface Pin Name Pin No. I/O Description DC Characteristics Comment DBG_TXD 12 DO Transmit data. VOLmax = 0.45V VOHmin = 1.35V 1.8V power domain. 1.8V power domain. Comment 11 DI Receive data. VILmin = -0.3V VILmax = 0.6V VIHmin = 1.2V VIHmax = 2.0V Pin Name Pin No.
UMTS/HSPA Module Series UC20 Hardware Design AGND 22 Reserved for analog ground. Ground. If unused, connect this pin to ground. Description DC Characteristics Comment I2C Interface Pin Name Pin No. I/O I2C_SCL 41 OD I2C serial clock. External pull-up resistor is required. 1.8V only. I2C_SDA 42 OD I2C serial data. External pull-up resistor is required. 1.8V only. Pin No. I/O Description DC Characteristics Comment Sleep mode control. VILmin = -0.3V VILmax = 0.6V VIHmin = 1.
UMTS/HSPA Module Series UC20 Hardware Design 3.4. Operating Modes The table below briefly summarizes the various operating modes referred to in the following chapters. Table 5: Overview of Operating Modes Mode Details UMTS Idle Software is active. The module has registered to the UMTS network and the module is ready to send and receive data. UMTS Talk/Data UMTS connection is ongoing. In this mode, the power consumption is decided by network setting (e.g. TPC pattern) and data transfer rate.
UMTS/HSPA Module Series UC20 Hardware Design 3.5.1.1. UART Application If application processor communicates with module via UART interface, the following preconditions can let the module enter into the sleep mode. Execute AT command AT+QSCLK=1 to enable the sleep mode. Drive DTR to high level. The following figure shows the connection between the module and application processor.
UMTS/HSPA Module Series UC20 Hardware Design Processor Module VDD USB_VBUS USB_DP USB_DP USB_DM USB_DM AP_READY GPIO RI EINT GND GND Figure 4: USB Application with Suspend Function When the processor’s USB bus returns to resume state, the module will be woken up. 3.5.1.3.
UMTS/HSPA Module Series UC20 Hardware Design Module Processor GPIO USB_VBUS Power Switch VDD USB_DP USB_DP USB_DM USB_DM RI EINT AP_READY GPIO GND GND Figure 5: USB Sleep Application without Suspend Function Supply power to USB_VBUS will wake up the module. In sleep mode, module can still receive paging, voice call and SMS from network, but the UART port is not accessible. When the module enters into the sleep mode, the SLEEP_IND will output a high logic level. 3.5.2.
UMTS/HSPA Module Series UC20 Hardware Design module up first. 3. GNSS function is still available when RF function is disabled. 3.6. Power Supply 3.6.1. Power Supply Pins UC20 provides four VBAT pins dedicated to connect with the external power supply. There are two separate voltage domains for VBAT. VBAT_RF with two pads for module RF part. VBAT_BB with two pads for module baseband part. The following table shows the VBAT pins and ground pins. Table 6: VBAT and GND Pins Pin Name Pin No.
UMTS/HSPA Module Series UC20 Hardware Design VBAT FB1 VBAT_RF FB2 VBAT_BB + + D1 5.1V C1 100uF C2 C3 C4 100nF 33pF 10pF C5 100uF C6 C7 C8 100nF 33pF 10pF Module Figure 6: Star Structure of the Power Supply Please pay special attention to the power supply design for applications. Make sure the input voltage will never drop below 3.4V. If the voltage drops below 3.4V, the module will turn off automatically.
UMTS/HSPA Module Series UC20 Hardware Design 3.6.4. Monitor the Power Supply You can use the AT+CBC command to monitor the VBAT_BB voltage value. For more details, please refer to document [1]. 3.7. Turn on and off Scenarios 3.7.1. Turn on Module Using the PWRKEY The following table shows the pin definition of PWRKEY. Table 7: PWRKEY Pin Description Pin Name PWRKEY Pin No. 21 Description DC Characteristics Comment Turn on/off the module. VIHmax = 2.1V VIHmin = 1.3V VILmax = 500mV Pull-up to 1.
UMTS/HSPA Module Series UC20 Hardware Design S1 PWRKEY TVS Close to S1 Figure 9: Turn on the Module Using Keystroke The turn on scenarios is illustrated as the following figure.
UMTS/HSPA Module Series UC20 Hardware Design 1 VBAT ≥ 100ms VIH ≥ 1.3V PWRKEY VIL ≤ 0.5V RESET_N 1.3 ~ 1.9s STATUS (OD) ≥ 5s UART Inactive Active ≥ 5s USB Inactive Active Figure 10: Timing of Turning on Module NOTES Make sure that VBAT is stable before pulling down PWRKEY pin. The time between them is recommended 30ms. 3.7.2. Turn off Module The following procedures can be used to turn off the module: Normal power down procedure: Turn off the module using the PWRKEY pin.
UMTS/HSPA Module Series UC20 Hardware Design VBAT ≥ 0.6s Log off network about 1s to 60s PWRKEY STATUS (OD) Module Status Power-down procedure RUNNING OFF Figure 11: Timing of Turning off Module During power-down procedure, module will send out URC “NORMAL POWER DOWN” via URC port first, then log off network and save important data. After logging off, module sends out “POWERED DOWN” and shut down the internal power supply.
UMTS/HSPA Module Series UC20 Hardware Design The uncritical voltage is 3.4V to 4.3V, If the voltage > 4.3V or < 3.4V the module would automatically shut down itself. If the voltage < 3.4V, the following URC will be presented: +QIND: “vbatt”,-2 If the voltage > 4.3V, the following URC will be presented: +QIND: “vbatt”,2 NOTE The value of voltage threshold can be revised by command AT+QCFG=“vbatt”, refer to document [1] for details. 3.8. Reset the Module The RESET_N can be used to reset the module.
UMTS/HSPA Module Series UC20 Hardware Design RESET_N ≥ 150ms 4.7K Reset pulse 47K Figure 12: Reference Circuit of RESET_N by Using Driving Circuit S2 RESET_N TVS Close to S2 Figure 13: Reference Circuit of RESET_N by Using Button The reset scenario is illustrated as the following figure. VBAT ≥ 5s 150ms VIH ≥ 1.3V RESET_N VIL ≤ 0.
UMTS/HSPA Module Series UC20 Hardware Design NOTE Use the RESET_N only when turning off the module by the command AT+QPOWD and the PWRKEY pin failed. 3.9. RTC Backup The RTC (Real Time Clock) can be powered by an external power source through the pin VRTC when the module is powered down and there is no power supply for the VBAT. It is also available to charge the battery on the VRTC when module is turned on.
UMTS/HSPA Module Series UC20 Hardware Design VRTC R RTC Core Large Capacitance Capacitor Module Figure 17: RTC Supply from Capacitor 3.10. UART Interface The module provides two UART interfaces: main UART interface and debug UART interface. The following shows the different features. Main UART interface supports 9600, 19200, 38400, 57600, 115200, 230400, 460800, 921600bps baud rate, the default is 115200bps, while autobauding is not supported.
UMTS/HSPA Module Series UC20 Hardware Design DTR 66 DI Data terminal ready. 1.8V power domain. TXD 67 DO Transmit data. 1.8V power domain. RXD 68 DI Receive data. 1.8V power domain. Table 10: Pin Definition of the Debug UART Interface Pin Name Pin No. I/O Description Comment DBG_TXD 12 DO Transmit data. 1.8V power domain. DBG_RXD 11 DI Receive data. 1.8V power domain. The logic levels are described in the following table.
UMTS/HSPA Module Series UC20 Hardware Design VDD_EXT VCCA VCCB 0.1uF VDD_3.3V 0.1uF OE GND RI A1 B1 RI_3.3V DCD A2 B2 DCD_3.3V CTS A3 TXB0108PWR B3 CTS_3.3V RTS A4 B4 RTS_3.3V DTR A5 B5 DTR_3.3V TXD A6 B6 TXD_3.3V A7 B7 A8 B8 RXD 51K RXD_3.3V 51K Figure 18: Reference Circuit with Translator Chip Please visit http://www.ti.com for more information. Another example with transistor translation circuit is shown as below.
UMTS/HSPA Module Series UC20 Hardware Design 3.3V OE VCCB VCC GND DCD TXD CTS RI DCD_1.8V TXD_1.8V DCD_3.3V TXD_3.3V DIN1 DIN2 DOUT1 DOUT2 CTS_1.8V RI_1.8V CTS_3.3V RI_3.3V DOUT3 DOUT4 DOUT5 RXD DTR RTS GND RXD_1.8V DTR_1.8V RTS_1.8V GND RXD_3.3V DTR_3.3V RTS_3.3V DIN3 DIN4 DIN5 R1OUTB ROUT1 ROUT2 ROUT3 5 GND 1 DCD 2 RXD 8 CTS 9 RI 6 DSR RIN1 RIN2 RIN3 3 TXD 4 DTR 7 RTS VDD_EXT VCCA FORCEON /FORCEOFF 3.
UMTS/HSPA Module Series UC20 Hardware Design 3.11. USIM Card Interface 3.11.1. USIM Card Application The USIM card interface circuitry meets ETSI and IMT-2000 SIM interface requirements. Both 1.8V and 3.0V USIM cards are supported. Table 12: Pin Definition of the USIM Interface Pin Name Pin No. I/O Description Comment USIM_VDD 14 PO Power supply for USIM card. Either 1.8V or 3.0V is supported by the module automatically. USIM_DATA 15 IO Data signal of USIM card.
UMTS/HSPA Module Series UC20 Hardware Design NOTE Some AT commands are invalid when USIM card is not applied. UC20 supports USIM card hot-plugging via the USIM_PRESENCE pin. For details, refer to document [1] about the command AT+QSIMDET. If you do not need the USIM card detection function, keep USIM_PRESENCE unconnected. The reference circuit for using a 6-pin USIM card connector is illustrated as the following figure.
UMTS/HSPA Module Series UC20 Hardware Design 3.11.2. Design Considerations for USIM Connector For 8-pin USIM connector, it is recommended to use Molex 91228. Please visit http://www.molex.com for more information. Figure 24: Molex 91228 USIM Connector Table 13: Pin Description of Molex USIM Connector Name Pin Function VDD C1 USIM card power supply. RST C2 USIM card reset. CLK C3 USIM card clock. / C4 Not defined. GND C5 Ground. VPP C6 Not connected. DATA I/O C7 USIM card data.
UMTS/HSPA Module Series UC20 Hardware Design For 6-pin USIM connector, it is recommended to use Amphenol C707 10M006 512 2. Please visit http://www.amphenol.com for more information. Figure 25: Amphenol C707 10M006 512 2 USIM Card Connector Table 14: Pin Description of Amphenol USIM Connector Name Pin Function VDD C1 USIM card power supply. RST C2 USIM card reset. CLK C3 USIM card clock. GND C5 Ground. VPP C6 Not connected. DATA I/O C7 USIM card data.
UMTS/HSPA Module Series UC20 Hardware Design 3.12. USB Interface UC20 contains one integrated Universal Serial Bus (USB) transceiver which complies with the USB 2.0 specification and supports high speed (480 Mbps), full speed (12 Mbps) and low speed (1.5 Mbps) mode. The USB interface is primarily used for AT command, data transmission, GNSS NMEA sentences output, software debug and firmware upgrade. The following table shows the pin definition of USB interface.
UMTS/HSPA Module Series UC20 Hardware Design In order to ensure the USB interface design corresponding with the USB 2.0 specification, please comply with the following principles. It is important to route the USB signal traces as differential pairs with total grounding. The impedance of USB differential trace is 90ohm. Do not route signal traces under crystals, oscillators, magnetic devices and RF signal traces.
UMTS/HSPA Module Series UC20 Hardware Design In primary mode, the data is sampled on the falling edge of the PCM_CLK and transmitted on the rising edge; the PCM_SYNC falling edge represents the MSB. In this mode, PCM_CLK supports 128, 256, 512, 1024, 2048 and 4096kHz for different speech codec. In auxiliary mode, the data is sampled on the falling edge of the PCM_CLK and transmitted on the rising edge; while the PCM_SYNC rising edge represents the MSB.
UMTS/HSPA Module Series UC20 Hardware Design 125us 1 PCM_CLK 2 15 16 PCM_SYNC MSB LSB PCM_OUT MSB LSB PCM_IN Figure 29: Auxiliary Mode Timing The following table shows the pin definition of PCM and I2C interface which can be applied on audio codec design. Table 16: Pin Definition of PCM and I2C Interface Pin Name Pin No. I/O Description Comment PCM_IN 24 DI PCM data input. 1.8V power domain. PCM_OUT 25 DO PCM data output. 1.8V power domain.
UMTS/HSPA Module Series UC20 Hardware Design The following figure shows the reference design of PCM interface with external codec IC. PCM_CLK MIC+ MIC- BCLK PCM_SYNC FS PCM_OUT BIAS MIC_BIAS MCLK DACIN PCM_IN ADCOUT I2C_SCL SCLK I2C_SDA SDIN SPKOUT+ NAU8814 4.7K 4.7K Module SPKOUT- 1.8V Figure 30: Reference Circuit of PCM Application with Audio Codec NOTES 1. 2. It is recommended to reserved RC (R=22Ω, C=22pF) circuit on the PCM lines, especially for PCM_CLK.
UMTS/HSPA Module Series UC20 Hardware Design The following table describes the characteristic of the ADC function. Table 18: Characteristic of the ADC Parameter Min. ADC0 voltage range ADC1 voltage range Typ. Max. Unit 0.2 2.1 V 0.2 4.2 V ADC resolution 15 bits Offset error 3.5 % Gain error 2.5 % 3.15. Network Status Indication The network indication pins can be used to drive a network status indicator LED. The module provides two pins which are NET_MODE and NET_STATUS.
UMTS/HSPA Module Series UC20 Hardware Design A reference circuit is shown in the following figure. VBAT Module 2.2K 4.7K Network Indicator 47K Figure 31: Reference Circuit of the Network Indicator 3.16. Operating Status Indication 3.16.1. STATUS The STATUS pin is an open drain output for indicating the module operation status. You can connect it to a GPIO of DTE with pulled up, or as LED indication circuit as below. When the module is turned on normally, the STATUS will present the low state.
UMTS/HSPA Module Series UC20 Hardware Design VBAT VDD_MCU 10K 2.2K STATUS STATUS MCU_GPIO Module Module Figure 32: Reference Circuit of the STATUS 3.16.2. SLEEP_IND The SLEEP_IND is an indicated pin for judging whether the module is in sleep mode or not. When the module enters into the sleep mode, the SLEEP_IND will output a logic high level. So you can use the SLEEP_IND for low current indication. The following table shows the pin definition of SLEEP_IND.
UMTS/HSPA Module Series UC20 Hardware Design A reference circuit is shown in the following figure. VBAT Module 2.2K SLEEP_IND 4.7K 47K Figure 33: Reference Circuit of the SLEEP_IND 3.17. Behavior of the RI You can use command AT+QCFG=“risignaltype”, “physical” to configure RI behavior: No matter which port URC is presented on, URC will trigger the behavior on RI pin. NOTE URC can be output from UART port, USB AT port and USB modem port by command AT+QURCCFG. The default port is USB AT port.
UMTS/HSPA Module Series UC20 Hardware Design 4 GNSS Receiver 4.1. General Description UC20 includes a fully integrated global navigation satellite system solution that supports the latest generation gpsOne Gen8 of Qualcomm (GPS and GLONASS). Compared with GPS only, dual systems increase usable constellation, reduce coverage gaps and TTFF, and increase positioning accuracy, especially in rough urban environments.
UMTS/HSPA Module Series UC20 Hardware Design 4.2. GNSS Performance The following table shows UC20 GNSS performance. Table 24: GNSS Performance Parameter Description Conditions Typ. Unit Autonomous -144 dBm With LNA -147 dBm Autonomous -154 dBm With LNA -159 dBm Autonomous -155 dBm With LNA -160 dBm Autonomous 32 s XTRA enabled 22 s Autonomous 29 s XTRA enabled 3 s Autonomous 2.5 s XTRA enabled 2 s Autonomous @open sky <1.
UMTS/HSPA Module Series UC20 Hardware Design 4.3. Layout Guideline The following layout guideline should be taken into account in your design. Maximize the distance between the GNSS antenna and the main UMTS antenna. Noisy digital circuits such as the USIM card, USB interface, Camera module, Display connector and SD card should be away from the antenna. Use ground vias around the GNSS trace and sensitive analog signal traces to provide coplanar isolation and protection.
UMTS/HSPA Module Series UC20 Hardware Design 5 Antenna Interface UC20 antenna interface includes a main UMTS antenna, an optional UMTS Rx-diversity antenna, which is used to improve UMTS’s receiving performance, and a GNSS antenna. The antenna interface has an impedance of 50Ω. 5.1. UMTS Antenna Interface 5.1.1. Pin Definition The main antenna and UMTS Rx-diversity antenna pins definition are shown below. Table 25: Pin Definition of the RF Antenna Pin Name Pin No.
UMTS/HSPA Module Series UC20 Hardware Design Main antenna R1 0R ANT_MAIN C1 C2 NM NM Diversity antenna R2 0R ANT_DIV Module C3 C4 NM NM Figure 34: Reference Circuit of Antenna Interface NOTE Keep a proper distance between main antenna and diversity antenna to improve the receiving sensitivity. 5.2. GNSS Antenna Interface The following tables show the GNSS antenna pin definition and frequency specification. Table 27: Pin Definition of GNSS Antenna Pin Name Pin No.
UMTS/HSPA Module Series UC20 Hardware Design active antenna. Table 28: GNSS Frequency Type Frequency Unit GPS 1575.42±1.023 MHz GLONASS 1597.5~1605.8 MHz 5.2.1. Reference Design for Passive Antenna NM Passive antenna 100pF GND RFOUT GND /SHDN ANT_GNSS MCU_GPIO 6.
UMTS/HSPA Module Series UC20 Hardware Design 5.2.2. Reference Design for Active Antenna VDD Active antenna 10R 0.1uF 47nH 100pF ANT_GNSS NM NM Module Figure 36: Reference Circuit of GNSS Active Antenna NOTES 1. 2. 3. 4. 5. You can choose the corresponding reference circuit above according to your demands on antenna circuit design. MAX2659 is the recommended LNA chip. You can disable LNA to save power with one GPIO shown in above figure. Pay attention to this pin’s voltage level.
UMTS/HSPA Module Series UC20 Hardware Design Table 29: Antenna Requirements Type Requirements GNSS Frequency range: 1565~1607 MHz Polarization: RHCP or linear VSWR: < 2 (Typ.) Passive antenna gain: > 0dBi Active antenna noise figure: < 1.5dB Active antenna gain: > -2dBi Active antenna embedded LNA gain: 20dB (Typ.) Active antenna total gain: > 18dBi (Typ.) 5.3.2. Install the Antenna with RF Connector The following figure is the antenna installation with RF connector provided by HIROSE.
UMTS/HSPA Module Series UC20 Hardware Design Figure 38: Mechanicals of UF.L-LP Connectors The following figure describes the space factor of mated connector Figure 39: Space Factor of Mated Connector (Unit: mm) For more details, please visit http://www.hirose.com.
UMTS/HSPA Module Series UC20 Hardware Design 6 Electrical, Reliability Characteristics and Radio 6.1. Absolute Maximum Ratings Absolute maximum ratings for power supply and voltage on digital and analog pins of module are listed in the following table: Table 30: Absolute Maximum Ratings Parameter Min. Max. Unit VBAT_RF/VBAT_BB -0.3 4.7 V USB_VBUS -0.3 5.5 V Peak current of VBAT_BB 0 0.8 A Peak current of VBAT_RF 0 1.8 A Voltage at digital pins -0.3 2.3 V Voltage at ADC0 0 2.
UMTS/HSPA Module Series UC20 Hardware Design 6.2. Power Supply Ratings Table 31: The Module Power Supply Ratings Parameter Description Conditions Min. Typ. Max. Unit VBAT VBAT_BB and VBAT_RF Voltage must stay within the min/max values, including voltage drop, ripple and spikes. 3.4 3.8 4.3 V USB_VBUS USB detection 3.0 5.0 5.25 V 6.3. Operating Temperature The operating temperature is listed in the following table. Table 32: Operating Temperature Parameter Min Typ.
UMTS/HSPA Module Series UC20 Hardware Design Table 33: The Module Current Consumption Parameter Description Conditions OFF state supply current Power down 45 uA Sleep (USB disconnected) @ DRX=6 2.0 mA Sleep (USB disconnected) @ DRX=7 1.7 mA Sleep (USB disconnected) @ DRX=8 1.5 mA Sleep (USB disconnected) @ DRX=9 1.4 mA Idle (USB disconnected) @ DRX=6 14.0 mA Idle (USB connected) @ DRX=6 33.
UMTS/HSPA Module Series UC20 Hardware Design GNSS tracking current is tested in the following conditions: For Cold Start, 10 minutes after First Fix. For Hot Start, 15 seconds after First Fix. 6.5. RF Output Power The following table shows the RF output power of UC20 module. Table 34: Conducted RF Output Power Frequency Max. Min. UMTS 1900 22.5dBm+1/-1dB <-50dBm UMTS 850 22.5dBm+1/-1dB <-50dBm 6.6.
UMTS/HSPA Module Series UC20 Hardware Design Table 36: Electrostatics Discharge Characteristics Tested Points Contact Discharge Air Discharge VBAT, GND ±5 ±10 kV All antenna interfaces ±4 ±8 kV ±0.
UMTS/HSPA Module Series UC20 Hardware Design 7 Mechanical Dimensions This chapter describes the mechanical dimensions of the module. All dimensions are measured in mm. 7.1. Mechanical Dimensions of the Module (29+/-0.15) (32+/-0.
UMTS/HSPA Module Series UC20 Hardware Design 1.5 32 3.2 3.4 3.2 3.4 3.2 3.4 4.8 29 0.5 Figure 41: UC20 Bottom Dimensions (Bottom View) NOTE “XXXX” in pink on above figure is the PCB board code in the exposed copper.
UMTS/HSPA Module Series UC20 Hardware Design Figure 42: Bottom Pads Dimensions (Bottom View) UC20_Hardware_Design Confidential / Released 71 / 84
UMTS/HSPA Module Series UC20 Hardware Design 7.2. Footprint of Recommendation 22.1 3.45 3.4 1.9 6.45 6.8 6.16 4.6 9.3 4.8 2.5 1.0 1.9 13 29 4.4 7.8 3 9.04 2 0.8 1.3 32 Figure 43: Recommended Footprint (Top View) NOTES 1. 2. Keep out the area below the test point (circular area on the above figure) in the host PCB. In order to maintain the module, keep about 3mm between the module and other components in the host PCB.
UMTS/HSPA Module Series UC20 Hardware Design 7.3. Top View of the Module Figure 44: Top View of the Module 7.4.
UMTS/HSPA Module Series UC20 Hardware Design 8 Storage and Manufacturing 8.1. Storage UC20 is stored in the vacuum-sealed bag. The restriction of storage condition is shown as below. Shelf life in sealed bag is 12 months at < 40ºC / 90%RH. After this bag is opened, devices that will be subjected to reflow solder or other high temperature process must be: Mounted within 72 hours at factory conditions of ≤ 30ºC / 60%RH. Stored at <10% RH.
UMTS/HSPA Module Series UC20 Hardware Design It is suggested that peak reflow temperature is 235 ~ 245ºC (for SnAg3.0Cu0.5 alloy). Absolute max reflow temperature is 260ºC. To avoid damage to the module when it was repeatedly heated, it is suggested that the module should be mounted after the first panel has been reflowed. The following picture is the actual diagram which we have operated.
1 0 .5 . ±0 0.35±0.05 29.3±0.15 30.3±0.15 1 44.00±0.3 20.20±0.15 44.00±0.1 2.00±0.1 4.00±0.1 30.3±0.15 1.75±0.1 UMTS/HSPA Module Series UC20 Hardware Design 4.2±0.15 3.1±0.15 32.5±0.15 33.5±0.15 32.5±0.15 33.5±0.15 48.5 Cover tape 13 100 Direction of feed 44.5+0.20 -0.
UMTS/HSPA Module Series UC20 Hardware Design 9 Appendix A Reference Table 37: Related Documents SN Document Name Remark [1] UC20_AT_Commands_Manual UC20 AT Commands Manual [2] UC20_EVB_User_Guide UC20 EVB User Guide [3] UC20_Reference_Design UC20 Reference Design [4] UC20&M10_Reference_Design UC20 and M10 Compatible Reference Design [5] UC20&M10_Compatibilty_Design UC20 and M10 Compatibility Design Specification [6] Module_Secondary_SMT_User_Guide Module Secondary SMT User Guide [7]
UMTS/HSPA Module Series UC20 Hardware Design DCE Data Communications Equipment (typically module) DTE Data Terminal Equipment (typically computer, external controller) DTR Data Terminal Ready DTX Discontinuous Transmission EFR Enhanced Full Rate ESD Electrostatic Discharge FR Full Rate GLONASS GLObalnaya NAvigatsionnaya Sputnikovaya Sistema, the Russian Global Navigation Satellite System GMSK Gaussian Minimum Shift Keying GNSS Global Navigation Satellite System GPS Global Positioning S
UMTS/HSPA Module Series UC20 Hardware Design PCB Printed Circuit Board PDU Protocol Data Unit PPP Point-to-Point Protocol PSK Phase Shift Keying QAM Quadrature Amplitude Modulation QPSK Quadrature Phase Shift Keying RF Radio Frequency RHCP Right Hand Circularly Polarized RMS Root Mean Square (value) RTC Real Time Clock Rx Receive SIM Subscriber Identification Module SMS Short Message Service TDMA Time Division Multiple Access TE Terminal Equipment TX Transmitting Direction U
UMTS/HSPA Module Series UC20 Hardware Design VIHmin Minimum Input High Level Voltage Value VILmax Maximum Input Low Level Voltage Value VILmin Minimum Input Low Level Voltage Value VImax Absolute Maximum Input Voltage Value VImin Absolute Minimum Input Voltage Value VOHmax Maximum Output High Level Voltage Value VOHmin Minimum Output High Level Voltage Value VOLmax Maximum Output Low Level Voltage Value VOLmin Minimum Output Low Level Voltage Value VSWR Voltage Standing Wave Ratio WCDMA
UMTS/HSPA Module Series UC20 Hardware Design UC20_Hardware_Design Confidential / Released 81 / 84
UMTS/HSPA Module UC20 Hardware Design UC20_Hardware_Design Confidential / Released 82 / 84