AS7263 6-Channel NIR Spectral_ID Device with Electronic Shutter and Smart Interface General Description The AS7263 is a digital 6-channel spectrometer for spectral identification in the near IR (NIR) light wavelengths. AS7263 consists of 6 independent optical filters whose spectral response is defined in the NIR wavelengths from approximately 600nm to 870nm with full-width half-max (FWHM) of 20nm. An integrated LED driver with programmable current is provided for electronic shutter applications.
AS7263 − General Description Applications The AS7263 applications include: • Product authentication • Bank note/document validation • Chemical analysis • Food/beverage safety Block Diagram The functional blocks of this device are shown below: Figure 2: AS7263 NIR Spectral_ID System 3V 100nF uP 10uF VDD1 VDD2 RX / SCL_S TX / SDA_S LED_IND INT LED_DRV AS7263 Flash Memory MOSI MISO SCK CSN_EE GND Page 2 Document Feedback 6-channel NIR Sensor 3V 3V Light Source Light in Reflective Surface ams D
AS7263 − Pin Assignment Pin Assignment The device pin assignments are described below.
AS7263 − Pin Assignment Pin Number Pin Name 15 LED_DRV 16 GND Ground 17 VDD1 Voltage Supply 18 LED_IND 19 NF Not Functional. Do not connect. 20 NF Not Functional. Do not connect.
AS7263 − Absolute Maximum Ratings Absolute Maximum Ratings Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only. Functional operation of the device at these or any other conditions beyond those indicated under Electrical Characteristics is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
AS7263 − Electrical Characteristics Electrical Characteristics All limits are guaranteed with VDD = VDD1 = VDD2 = 3.3V, TAMB=25°C. The parameters with min and max values are guaranteed with production tests or SQC (Statistical Quality Control) methods. Figure 6: Electrical Characteristics of AS7263 Symbol Parameter Conditions Min Typ Max Unit General Operating Conditions VDD1 /VDD2 Voltage Operating Supply UART Interface 2.97 3.3 3.
AS7263 − Electrical Characteristics Symbol Parameter Conditions Min Typ Max Unit Digital Inputs and Outputs IIH, IIL Logic Input Current Vin=0V or VDD -1 1 μA IILRESN Logic Input Current (RESN pin) Vin=0V -1 -0.2 mA VIH CMOS Logic High Input 0.7* VDD VDD V VIL CMOS Logic Low Input 0 0.3* VDD V VOH CMOS Logic High Output I=1mA VDD 0.4 V VOL CMOS Logic Low Output I=1mA 0.
AS7263 − Timing Characteristics Timing Characteristics Figure 7: AS7263 I²C Slave Timing Characteristics Symbol Parameter Condition Min Typ Max Unit 400 kHz I²C Interface fSCLK SCL Clock Frequency 0 tBUF Bus Free Time Between a STOP and START 1.3 μs tHS:STA Hold Time (Repeated) START 0.6 μs tLOW LOW Period of SCL Clock 1.3 μs tHIGH HIGH Period of SCL Clock 0.6 μs tSU:STA Setup Time for a Repeated START 0.
AS7263 − Timing Characteristics Figure 8: I²C Slave Timing Diagram tR tF tLOW SCL P tHIGH S tHD:STA S tSU:DAT tHD:DAT P t SU:STA tSU:STO VIH SDA tBUF Stop VIL Start Figure 9: AS7263 SPI Timing Characteristics Symbol Parameter Conditions Min Typ Max Unit 16 MHz SPI Interface fSCK Clock Frequency 0 tSCK_H Clock High Time 40 ns tSCK_L Clock Low Time 40 ns tSCK_RISE SCK Rise Time 5 ns tSCK_FALL SCK Fall Time 5 ns tCSN_S CSN Setup Time Time between CSN high-low tran
AS7263 − Timing Characteristics Figure 10: SPI Master Write Timing Diagram tCSN_DIS CSN tSCK_RISE tCSN_S tCSN_H tSCK_FALL SCK t DO_S MOSI tDO_H MSB LSB HI-Z HI-Z MISO Figure 11: SPI Master Read Timing Diagram CSN_xx tSCK_H tSCK_L SCK tDI_V Dont care MOSI MISO Page 10 Document Feedback MSB LSB ams Datasheet [v1-00] 2016-Nov-25
AS7263 − Timing Characteristics Optical Characteristics Figure 12: Optical Characteristics of AS7263 (Pass Band)(1) Parameter Test Conditions Channel (nm) R Channel R Incandescent (2), (4) 610 35 (3),(4) counts/ (μW/cm2) S Channel S Incandescent (2), (4) 680 35 (3),(4) counts/ (μW/cm2) T Channel T Incandescent (2), (4) 730 35 (3),(4) counts/ (μW/cm2) U Channel U Incandescent (2), (4) 760 35 (3),(4) counts/ (μW/cm2) V Channel V Incandescent (2), (4) 810 35 (3),(4) counts/ (μ
AS7263 − Typical Operating Characteristics Typical Operating Characteristics Figure 13: Spectral Responsivity AS7263 1 Normalized Responsivity 0.9 0.8 0.7 R 0.6 S 0.5 T 0.4 U 0.3 V 0.2 W 0.
AS7263 − Detailed Description Detailed Description Figure 14: Internal Block Diagram VDD1 VDD2 INT LED_IND RX / SCL_S 2 UART / I C TX / SDA_S I2C_ENB LED_DRV °C Spectral_ID Engine MISO SPI Master MOSI SCK CSN_SD Multi Spectral Sensor R S T U V W SYNC / RESN RC Osc 16MHz GND 6-Channel NIR Spectral_ID Detector The AS7263 6-channel Spectral_ID is a next-generation digital spectral sensor device.
AS7263 − Detailed Description Data Conversion Description AS7263 spectral conversion is implemented via two photodiode banks per device. Bank 1 consists of data from the S, T, U, V photodiodes. Bank 2 consists of data from the R, T, U, W photodiodes. Spectral conversion requires the integration time (IT in ms) set to complete. If both photodiode banks are required to complete the conversion, the 2nd bank requires an additional IT ms. Minimum IT for a single bank conversion is 2.8 ms.
AS7263 − Detailed Description Figure 15: Photo Diode Array Photo Diode Array T U S R V W Figure 16: Bank Mode and Data Conversion BANK Mode 0 One Conversion S, T, U, V Integration Time BANK Mode 1 One Conversion R, T, U, W Integration Time BANK Mode 2 1st Conversion Integration Time S, T, U, V 2nd Conversion R, T, U, W Integration Time RC Oscillator The timing generation circuit consists of an on-chip 16MHz, temperature compensated oscillator, which provides the master clock for the AS7263.
AS7263 − Detailed Description Temperature Sensor The Temperature Sensor is constantly measuring the on-chip temperature and enables temperature compensation procedures. Reset Pulling down the RESN pin for longer than 100ms resets the AS7263. Figure 17: Reset Circuit RESN CLE Reset AS7263 Push > 100ms Indicator LED The LED, connected to pin LED_IND, can be used to indicate programming progress of the device.
AS7263 − Detailed Description Interrupt Operation If BANK is set to Mode 0 or Mode 1 then the data is ready after the 1 st integration time. If BANK is set to Mode 2 or Mode 3 then the data is ready after two integration times. If the interrupt is enabled (INT = 1) then when the data is ready, the INT line is pulled low and DATA_RDY is set to 1. The INT line is released (returns high) when the control register is read. DATA_RDY is cleared to 0 when any of the sensor registers R, S, T, U, V, W are read.
AS7263 − Detailed Description Figure 18: I²C Slave Device Address and Physical Registers Entity Description Note 8-bit Slave Address Byte = 1001 001x x= 1 for Master Read (byte = 93 hex) x= 0 for Master Write (byte = 92 hex) STATUS Register I²C slave interface STATUS register. Read-only. Register Address = 0x00 Bit 1: TX_VALID 0 -> New data may be written to WRITE register 1 -> WRITE register occupied. Do NOT write. Bit 0: RX_VALID 0 -> No data is ready to be read in READ register.
AS7263 − Detailed Description Figure 19: I²C Virtual Register Byte Write Pseudocode Poll I²C slave STATUS register; If TX_VALID bit is 0, a write can be performed on the interface; Send a virtual register address and set the MSB of the register address to 1 to indicate the pending write; Poll I²C slave STATUS register; If TX_VALID bit is 0, the virtual register address for the write has been received and the data may now be written; Write the data.
AS7263 − Detailed Description I²C Virtual Register Read Access Figure 20 shows the pseudocode necessary to read virtual registers on the AS7263. Note that in this case, reading a virtual register, the register address is not modified.
AS7263 − Detailed Description I²C Virtual Register Set The figure below provides a summary of the AS7263 I²C register set. Figures after that provide additional details. All register data is hex or, where noted, 32-bit floating point, and all multi-byte entities are Big Endian (most significant byte is situated at the lowest register address).
AS7263 − Detailed Description Addr Name Sensor Calibrated Data Registers 0x14: 0x17 R_Cal Channel R Calibrated Data (float) 0x18: 0x1B S_Cal Channel S Calibrated Data (float) 0x1C: 0x1F T_Cal Channel T Calibrated Data (float) 0x20: 0x23 U_Cal Channel U Calibrated Data (float) 0x24: 0x27 V_Cal Channel V Calibrated Data (float) 0x28: 0x2B W_Cal Channel W Calibrated Data (float) Detailed Register Description Figure 22: HW Version Registers A
AS7263 − Detailed Description Figure 23: FW Version Registers Addr: 0x02 FW_Version Bit Bit Name Default Access 7:6 Minor Version R Minor Version [1:0] 5:0 Sub Version R Sub Version Addr: 0x03 Bit Description FW_Version Bit Bit Name Default Access Bit Description 7:4 Major Version R Major Version 3:0 Minor Version R Minor Version [5:2] Figure 24: Control Setup Register Addr: 0x04/0x84 Control_Setup Bit Bit Name Default Access Bit Description 7 RST 0 R/W Soft Reset
AS7263 − Detailed Description Figure 25: Integration Time Register Addr: 0x05/0x85 INT_T Bit Bit Name Default Access 7:0 INT_T 0xFF R/W Bit Description Integration time = * 2.
AS7263 − Detailed Description Figure 28: Sensor Raw Data Registers Addr: 0x08 Bit Bit Name 7:0 R_High R_High Default Access R Addr: 0x09 Bit Bit Name 7:0 R_Low Bit Name 7:0 S_High Default Access R Bit Name 7:0 S_Low Default Bit Name 7:0 T_High R Bit Name 7:0 T_Low Default Bit Name 7:0 U_High R Bit Name 7:0 U_Low ams Datasheet [v1-00] 2016-Nov-25 Bit Description Channel S Low Data Byte T_High Default Access R Bit Description Channel T High Data Byte T_Low Default Acc
AS7263 − Detailed Description Addr: 0x10 Bit Bit Name 7:0 V_High V_High Default Access R Addr: 0x11 Bit Bit Name 7:0 V_Low Bit Name 7:0 W_High Default Access R Bit Name 7:0 W_Low Bit Description Channel V Low Data Byte W_High Default Access R Addr: 0x13 Bit Channel V High Data Byte V_Low Addr: 0x12 Bit Bit Description Bit Description Channel W High Data Byte W_Low Default Access R Bit Description Channel W Low Data Byte Figure 29: Sensor Calibrated Data Registers Addr: 0x14:0
AS7263 − Detailed Description Addr: 0x24:0x27 Bit Bit Name 31:0 V_Cal V_Cal Default Access R Channel V Calibrated Data (float) Addr: 0x28:0x2B Bit Bit Name 31:0 W_Cal Bit Description W_Cal Default Access Bit Description R Channel W Calibrated Data (float) 4-Byte Floating-Point (FP) Registers Several 4-byte registers (hex) are shown in the tables.
AS7263 − Detailed Description –2 FPvalue = ( 1 )x ( 1 + 2 )x2 ( –3 ) = 0.15625 UART Interface If selected by the I2C_ENB pin setting, the UART module implements the TX and RX signals as defined in the RS-232 / V.24 standard communication protocol. It has on both, receive and transmit path, a 16 entry deep FIFO. It can generate interrupts as required. UART Feature List 1 • Full Duplex Operation (Independent Serial Receive and Transmit Registers) with FIFO buffer of 8 byte for each.
AS7263 − Detailed Description Figure 31: UART Protocol Data Bits TX D0 D1 Start Bit D2 D3 D4 D5 D6 D7 D0 Parity Bit Stop Bit Tbit=1/Baude Rate Always Low RX P Next Start Even or odd Always High D0 D1 D2 D3 D4 D5 D6 D7 P D0 Start Bit detected After Tbit/2: Sampling of Start Bit After Tbit: Sampling of Data Sample Points AT Command Interface The microprocessor interface to control the NIR Spectral_ID Sensor is via the UART, using the AT Commands across the UART interface.
AS7263 − Detailed Description In the Figure below, numeric values may be specified with no leading prefix, in which case they will be interpreted as decimals, or with a leading “0x” to indicate that they are hexadecimal numbers, or with a leading “‘b” to indicate that they are binary numbers. The commands are loosely grouped into functional areas. Texts appearing between angle brackets (‘<‘ and ‘>‘) are commands or response arguments.
AS7263 − Detailed Description Command ATTCSMD= ATTCSMD ATBURST= Response Description / Parameters OK Set Sensor Mode 0 = BANK Mode 0; 1 = BANK Mode 1; 2 = BANK Mode 2; 3 = BANK Mode 3 One-Shot; 4 = Sensors OFF In One-Shot mode, each ATTCSMD=3 command triggers a One-Shot reading OK Read Sensor Mode, see above OK = # of samples (ATBURST=1 means run until ATBURST=0 is received (a special case for continuous output) LED Driver Controls ATLED0= ATLED0 ATLED1=
AS7263 − Application Information Application Information Figure 34: AS7263 Typical Application Circuit 3V3 3V3 CSN_SD 7 VDD2 CSN_EE 6 1 2 RESN MISO 5 2 DO 16 GND MOSI 4 5 DI SCK 3 6 8 3 /WP 7 /HOLD 3V3 Vled 15 LED_DRV 18 LED_IND 11 RX/SCL_S 12 TX/SDA_S 13 INT AS7263 I2C_ENB DNP RX TX INT Page 32 Document Feedback NC NC NC NC NC 19 20 1 10 9 /CS 1uF VCC 8 VDD1 14 Flash Memory CLK GND 10K RST 17 4 100nF 10uF 0R ams Datasheet [v1-00] 2016-Nov-25
AS7263 − Package Drawings & Markings Package Drawings & Markings Figure 35: Package Drawing LGA RoHS Green Note(s): 1.
AS7263 − PCB Pad Layout PCB Pad Layout Suggested PCB pad layout guidelines for the LGA device are shown. Figure 36: Recommended PCB Pad Layout Unit: mm 0.30 1.10 0.65 4.60 1 4.
AS7263 − Mechanical Data Mechanical Data Figure 37: Tape & Reel Information Note(s): 1. Each reel contains 2000 parts. 2. Measured from centreline of sprocket hole to centreline of pocket. 3. Cumulative tolerance of 10 sprocket holes is ±0.20. 4. Other material available. 5. All dimensions in millimeters unless otherwise stated.
AS7263 − Storage & Soldering Information Storage & Soldering Information Soldering Information The module has been tested and has demonstrated an ability to be reflow soldered to a PCB substrate. The solder reflow profile describes the expected maximum heat exposure of components during the solder reflow process of product on a PCB. Temperature is measured on top of component. The components should be limited to a maximum of three passes through this solder reflow profile.
AS7263 − Storage & Soldering Information Manufacturing Process Considerations The AS7263 package is compatible with standard reflow no-clean and cleaning processes including aqueous, solvent or ultrasonic techniques. However, as an open-aperture device, precautions must be taken to avoid particulate or solvent contamination as a result of any manufacturing processes, including pick and place, reflow, cleaning, integration assembly and/or testing. Temporary covering of the aperture is allowed.
AS7263 − Storage & Soldering Information Floor Life The module has been assigned a moisture sensitivity level of MSL 3.
AS7263 − Ordering & Contact Information Ordering & Contact Information Figure 40: Ordering Information (1) (2) Ordering Code Package Marking Description Delivery Form Delivery Quantity AS7263-BLGT 20-pin LGA AS7263 6-Channel NIR Spectral_ID Device with Electronic Shutter & Smart Interface Tape & Reel 2000 pcs/reel Note(s): 1. Required companion serial flash memory (must be ams verified) is ordered from the flash memory supplier (e.g. AT25SF041-SSHD-B from Adesto Technologies) 2.
AS7263 − RoHS Compliant & ams Green Statement RoHS Compliant & ams Green Statement RoHS: The term RoHS compliant means that ams AG products fully comply with current RoHS directives. Our semiconductor products do not contain any chemicals for all 6 substance categories, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, RoHS compliant products are suitable for use in specified lead-free processes.
AS7263 − Copyrights & Disclaimer Copyrights & Disclaimer Copyright ams AG, Tobelbader Strasse 30, 8141 Premstaetten, Austria-Europe. Trademarks Registered. All rights reserved. The material herein may not be reproduced, adapted, merged, translated, stored, or used without the prior written consent of the copyright owner. Devices sold by ams AG are covered by the warranty and patent indemnification provisions appearing in its General Terms of Trade.
AS7263 − Document Status Document Status Document Status Product Preview Preliminary Datasheet Datasheet Datasheet (discontinued) Page 42 Document Feedback Product Status Definition Pre-Development Information in this datasheet is based on product ideas in the planning phase of development.
AS7263 − Revision Information Revision Information Changes from 0-90 (2016-Nov-04) to current revision 1-00 (2016-Nov-25) Page Initial production version for release Completely revised version Note(s): 1. Page and figure numbers for the previous version may differ from page and figure numbers in the current revision. 2. Correction of typographical errors is not explicitly mentioned.
AS7263 − Content Guide Content Guide Page 44 Document Feedback 1 1 2 2 General Description Key Benefits & Features Applications Block Diagram 3 5 6 Pin Assignment Absolute Maximum Ratings Electrical Characteristics 8 11 Timing Characteristics Optical Characteristics 12 Typical Operating Characteristics 13 13 14 15 16 16 16 16 17 17 17 18 20 21 22 27 28 28 28 28 28 29 Detailed Description 6-Channel NIR Spectral_ID Detector Data Conversion Description RC Oscillator Temperature Sensor Reset Indicat
AS7263 − Content Guide 40 41 42 43 ams Datasheet [v1-00] 2016-Nov-25 RoHS Compliant & ams Green Statement Copyrights & Disclaimer Document Status Revision Information Page 45 Document Feedback
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