hardware design v1.00
Table Of Contents
- Contents
- Version History
- 1 Introduction
- 2 SIM968 Overview
- 3 Package Information
- 4 GSM Application Interface
- 4.1 GSM Power Supply
- 4.2 Power on/down Scenarios
- 4.3 Power Saving Mode
- 4.4 Charging Interface
- 4.5 RTC Backup
- 4.6 Serial Interfaces
- 4.7 Audio Interfaces
- 4.8 SIM Card Interface
- 4.9 LCD Display/SPI Interface
- 4.10 Keypad Interface
- 4.11 ADC
- 4.12 RI Behaviors
- 4.13 Network Status Indication
- 4.14 General Purpose Input/Output (GPIO)
- 4.15 External Reset
- 4.16 PWM
- 4.17 I2C Bus
- 4.18 GSM Antenna Interface
- 5 GNSS Application Interface
- 6 Electrical, Reliability and Radio Characteristics
- 6.1 Absolute Maximum Ratings
- 6.2 Recommended Operating Conditions
- 6.3 Digital Interface Characteristics
- 6.4 SIM Card Interface Characteristics
- 6.5 VDD_EXT Characteristics
- 6.6 SIM_VDD Characteristics
- 6.7 VRTC Characteristics
- 6.8 Current Consumption (VBAT = 3.8V)
- 6.9 Electro-Static Discharge
- 6.10 Radio Characteristics
- 6.11 Module label information
- Appendix
Smart Machine Smart Decision
SIM968_Hardware Design_V1.00 2013.02.25
52
PCL=15 76
PCL=5 240
PCL=12 110
GSM 850
EGSM 900
PCL=19 83
mA
PCL=0 170
PCL=7 95
Data mode
GPRS(1Rx,1Tx)
DCS 1800
PCS 1900
PCL=15 80
mA
PCL=5 270
PCL=12 150
GSM 850
EGSM 900
PCL=19 120
mA
PCL=0 210
PCL=7 130
Data mode
GPRS(4Rx,1Tx)
DCS 1800
PCS 1900
PCL=15 115
mA
PCL=5 435
PCL=12 185
GSM 850
EGSM 900
PCL=19 130
mA
PCL=0 320
PCL=7 155
Data mode
GPRS(3Rx,2Tx)
DCS 1800
PCS 1900
PCL=15 122
mA
I
VBAT-peak
Peak current During Tx burst 2 A
* In above table the current consumption value is the typical one of the module tested in laboratory. In the mass production stage,
there may be differences among each individual.
6.9 Electro-Static Discharge
SIM968 is an ESD sensitive component, so more attention should be paid to the procedure of handling and
packaging. The ESD test results are shown in the following table.
Table
30: The ESD characteristics (Temperature: 25℃, Humidity: 45 %)
Pin Contact discharge Air discharge
VBAT ±5KV ±10KV
GPS_VCC ±5KV ±10KV
GND ±5KV ±10KV
RXD, TXD ±4KV ±8KV
GPS_RXD,GPS_RXD ±4KV ±8KV
Antenna port ±5KV ±10KV
SPKP/ SPKN
MICP/ MICN
±4KV ±8KV
PWRKEY ±4KV ±8KV
Note: It is suggested that customers in serials with 100ohm resistances on UART lines for ESD consideration.