Rainbow Electronics AT77SM0101BCB02VKE User Manual

Features

• Module Size: 55 x 72 mm (Smaller than Smart Card)

• Microcontroller: Atmel ARM9

• SDRAM: 128 Mbits

• Flash: Atmel DataFlash

• Fingerprint Sensor: Atmel FingerChip

• Operating Temperature Range: -30° C to +65° C

• Operating Voltage: 3.3V ±10%

• Power Consumption: 200 mA in Typical Conditions

• Operating System: Linux

• Available interfaces on Extension Connector:

– Drivers Provided for SPI, Ethernet, Serial DBGU – Drivers not Provided for USB Host and Device, TWI, RS-485, IrDA,

SmartCard, MMC/SD Card, SSC, RTC, JTAG…

• Software Suite with Embedded Pre-loaded Bio-engine

-based AT91RM9200

32 Mbits

(Kernel 2.4.19)

AT77C101B-CB02V

Description

This document describes the specifications of Atmel's AT77SM0101BCB02VKE FingerChip biometric module. Based on Atmel's FingerChip fingerprint sensor, ARM9 microcontroller and flash memory, the AT77SM0101BCB02VKE provides the main biometric functions such as user enrollment, authentication and identification in a packaged module, making it easy to integrate into a final system.

The AT77SM0101BCB02VKE is particularly well-suited to Physical Access Control, Point of Sale devices, Time and Attendance or Vending Machines.

FingerChip® Biometric Module

AT77SM0101BCB02VKE

The AT77SM0101BCB02VKE provides great flexibility because of its memory capacity and powerful microcontroller loaded with the Linux operating system, and features many possible interfaces, including Ethernet. The AT77SM0101BCB02VKE biometric module requires the purchase of the Evaluation/Development Kit AT77SM0101BCB02VEK to develop the user interface of the final application.

Applications

• Physical Access Control

• Time and Attendance Systems

• Automated Teller Machines, Points of Sale

• Vending Machines

•Smart Homes

• Locks, Safes

• Reference Design for ARM9 and FingerChip Design Development

Figure 1. FingerChip Biometric Module AT77SM0101BCB02VKE

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Functional Description

The AT77SM0101BCB02VKE is a biometric sub-system based on Atmel’s FingerChip fingerprint sensor. It comprises a fingerprint sensor connected to a board that embeds processing capabilities through an ARM9-based AT91RM9200 microprocessor, and memory to store the software and fingerprint templates.

The biometric module must be connected to a motherboard for power supplies and interface connections. Connection to the motherboard is achieved through two standard connectors located on the sides of the module board.

The module is loaded with a Linux operating system, an Atmel driver for the FingerChip sensor, and by default, authentication software (biometric library) for extraction of fingerprint characteristics and comparison with enrolled templates (also called bio-engine). The standalone module can perform the following:

• Enrollment: an operation where the end-user scans his fingerprint by sweeping it across the FingerChip sensor, providing a fingerprint signature reference (template)

• Authentication: accurate matching of the newly acquired fingerprint against the template stored in the board’s memory during the enrollment procedure, used to validate user authentication

• Identification: matching of the fingerprint image against the correct template within a database of previously acquired templates

These three functions can then be used in any application requiring authentication to grant rights to a user, or to change criteria of the user’s profile. Examples of typical applications might include physical access control or time and attendance monitoring.

The AT77SM0101BCB02VEK Evaluation Kit provides all the tools necessary for easy development of a customized application using the biometric module APIs.

The AT77SM0101BCB02VKE biometric module lets you add convenient and secured user authentication to your products in a surprisingly reduced development time.

Figure 2. AT77SM0101BCB02VKE Block Diagram

Linear

Regulator

3.3V

SDRAM

16 MB

3.3V

1.8V

32-bit

Data Bus

8 Bits

Motherboard

Connectors

GPIOS Interfaces

AT91RM9200

Control

SPI

Flash 4 MB

AT77C101B-CB02V

AT77SM0101BCB02VKE

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AT77SM0101BCB02VKE

Technical Description

Module Size and Length of Flex

Atmel’s FingerChip biometric module includes the AT77C101B-CB02V FingerChip sensor (8-bit parallel interface) connected through a flex cable to the module itself.

The board size of the module is 55 mm x 72 mm. It has three screw holes for easy fixing to the motherboard or casing of the final system.

The flexible cable is 5 cm long. It is a single straight cable made of copper.

Figure 3. AT77SM0101BCB02VKE Board Dimensions

55 mm

50 mm

26.6 mm

72 mm

9.85 mm

Description of Motherboard Interface

The dimensions of the sensor are 26.6 mm x 9.85 mm x 2.6 mm for the PCB. The die size is 1.7 mm x 17.3 mm.

Figure 4. Motherboard Interface

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Table 1 . J1 Pin Description

Pin Description Pin Description

1GND2 3V3

3 NBS3 4 NBS1

5 PC10 6 NRD_NOE_NCFOE

7 PC11 8 NWR0_NWE_NCFWE

9 PC12 10 NCS3_NSMCS

11 PC14* 12 PC15*

13 PC1 14 PC0*

15 PC2 16 PC3

17 PC4 18 PC5

19 PC6 20 PA15/EMDC

21 PA0/MISO 22 PA16/EMDIO

23 PA1/MOSI 24 PA17/TXD0

25 PA2/SPCK 26 PA18/RXD0

27 PA4/NPCS1 28 PA19/SCK0

29 PA5/NPCS2 30 PA20/CTS0

31 PA6/NPCS3 32 PA21/RTS0

33 PA7/EREFCK 34 PA22

35 PA8/ETXEN 36 PA23/IRQ3

37 PA9/ETX0 38 PA24

39 PA10/ETX1 40 PA25/TWD

41 PA11/ECRSDV 42 PA26/TWCK

43 PA12/ERX0 44 PA29

45 PA13/ERX1 46 PA28

47 PA14/ERXER 48 PA27

49 3V3 50 GND

Note: Pins 11, 12 and 14: do not use when the AT77C101B is connected to the module.

AT77SM0101BCB02VKE

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AT77SM0101BCB02VKE

Table 2 . J2 Pin Description

Pin Description Pin Description

1GND23V3

3 PB22 4 PC9

5 PB19 6 PC8

7 PB18 8 PC7

9 PB17 10 DDP

11 PB16 12 DDM

13 PB15 14 HDPA

15 PB14 16 HDMA

17 PB13 18 PB29/IRQ0

19 PB12 20 PB28/FIQ

21 PB11 22 PB27

23 PB10 24 PB26

25 PB9 26 PB25

27 PB8 28 PB24

29 PB7 30 PB23

31 PB6 32 NRST

33 PB5 34 NTRST

35 PB4 36 TMS

37 PB3 38 TCK

39 PB2 40 TDO

41 PB1 42 TDI

43 PB0 44 JTAGSEL

45 PA31 46 PB21

47 PA30 48 PB20

49 3V3 50 GND

The pins are used to connect the following interfaces:

• USB device: pins 10 and 12 of J2 connector

• USB host: pins 14 and 16 of J2 connector

• TWI: pins 40 and 42 of J1 connector

• JTAG: pins 32, 34, 36, 38, 40, 42 and 44 of J2 connector

• SPI: pins 21, 23, 25, 27, 29 and 31 of J1 connector

• Two serial links: RS-232, RS-485, IrDA and/or Smart Card

• Ethernet or MMC/SD card

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