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

5391A–BIOM–09/04

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

2

AT77SM0101BCB02VKE

5391A–BIOM–09/04

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

2

1

2

1

50

49

50

49

5391A–BIOM–09/04

3

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.

4

AT77SM0101BCB02VKE

5391A–BIOM–09/04

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

5391A–BIOM–09/04

5

Board’s Main Components

ARM9-based AT91RM9200 Microcontroller

Memory The AT77SM0101BCB02VKE biometric module features:

AT77C101B-CB02V Sensor The sensor has the following characteristics:

The AT91RM9200 microcontroller features the following:

• 200 MIPS capability

• 16 KB data cache

• 16 KB instruction cache

• 16 KB SRAM

• ROM boot

•Ethernet MAC

• USB 2.0 full-speed host and device

• USART, DMA, TWI, SPI, SSC, MCI

The ARM9 operates at 200 MHz on the module.

• 128 Mbits (16 Mbytes) of SDRAM on a 32-bit parallel data bus interface operating at
66 MHz

• 32 Mbits (4 Mbytes) of Atmel DataFlash on an SPI bus operating at 10 MHz

• A sensitive layer over a 0.8 µm CMOS array

• An image zone of 0.4 × 14 mm, equalling 0.02 in. × 0.55 in.

• An image array of 8 × 280, equalling 2240 pixels

• A pixel pitch of 50 µm × 50 µm, equalling 500 dots-per-inch resolution

• A pixel clock of up to 2 MHz with a capacity of up to 1780 frames per second

• A die size of 1.7 × 17.3 mm

• An operating voltage range of 3V to 5.5V

• A natural protection from electrostatic discharge (ESD) up to 16 kV of air discharge.
Use of metal casing or metalized plastic in the final application is strongly
recommended

• A power consumption of 20 mW at 3.3V, 1 MHz, 25°C

• An operating temperature range of -40°C to +85°C

• A strong resistance to abrasion with the capability to withstand over 1 million finger
sweeps

• A sweep speed ranging from 2 cm/s to 20 cm/s

• A low power consumption of 6 mA typical in acquisition mode and 10 µA in standby
mode

6

AT77SM0101BCB02VKE

5391A–BIOM–09/04

Storage Capacity

Figure 5. RAM Memory Mapping

AT77SM0101BCB02VKE

16 MB RAM

Used by Ramdisk

6 MB

Figure 6. DataFlash Memory Mapping

16 kB

Compressed

Kernel

700 kB

Kernel

1.5 MB

AT77SM0101BCB02VKE Compressed Ramdisk < 2 MB

Used by Kernel

Code

4 MB 4.5 MB

4 MB DataFlash

Compressed Ramdisk

3 MB

Free

Templates

300 kB

Biometric Performances The device’s biometric performances are characterized by the following:

• An image size of 500 × 400

• 256 levels of grey

• A finger swiping speed from 2 to 15 cm/s

• An FRR under 3% at an FAR 10

• An authentication time of under 10 ms

• A biometric template size of 384 bytes

• An authentication algorithm size of 420 kbytes

• An identification time of under 1 second for 50 templates

-4

rate using an IKENDI® algorithm

Storage

Database

Software

Operating System Driver Modules

5391A–BIOM–09/04

The biometric module comes preloaded with the Linux operating system (kernel 2.4.19
rmk 7). The kernel includes:

• Ramdisk support

• A serial port driver supporting DBGU and up to four UARTs

• An SPI driver

• Ethernet layers 10/100 Mbits (compatible with MII protocol)

• Watchdog support

Further information can be retrieved at http://www.arm.linux.org.uk.

7

Two drivers are provided as modules that can be loaded or unloaded during runtime.
These are:

• The FingerChip driver: FingerChip_mod.o, version 2.0 enabling on-the-fly
reconstruction of images

• A GPIOs driver: Leds_mod.o, version 2.0, used to drive switches, LEDS etc.

Environmental Specifications

Operating Conditions

Absolute Maximum Ratings*

Power Supply Voltage (VCC) ................................-0.3V to 4.6V

Storage Temperature (T

) ............................. -40° C to +85° C

stg

*NOTICE: Stresses beyond those listed under “Absolute

Maximum Ratings” may cause permanent dam­age to the device. This is a stress rating only and
functional operation of the device at these or any
other conditions beyond those indicated in the
operational sections of this specification is not
implied. Exposure to absolute maximum rating
conditions for extended periods may affect
device reliability.

Recommended Conditions of Use

Parameter Symbol Comments Min Typ Max Unit

Positive supply voltage V

Operating temperature range T

CC

amb

3.3V ±10% 3 3.3 3.6 V

Telecom: “T grade” -30° C to +65° C°C

Sensor Resistance

Min Value Standard Method

ESD

Air discharge on die surface (Zap gun), sensor included in casing ±16 kV NF EN 6100-4-2

Mechanical Abrasion

Number of cycles without lubricant
[a multiplication by a factor of 20 should be applied for correlation with a real finger]

Chemical Resistance

Cleaning agents, acid, grease, alcohol, diluted acetone 4 hours Internal method

Note: Resistance characteristics are given for the sensor only.

200,000 MIL E 12397B

Electrical Characteristics

Parameter Symbol Comments Min Typ Max Unit

Current on V

8

CC

AT77SM0101BCB02VKE

I

CC

3.3V ±10% 200 300 mA

5391A–BIOM–09/04

AT77SM0101BCB02VKE

Module Integration

Mechanics The size of the board and the flex cable make integrating the standalone module into the

final product simple and convenient. In addition, the module can be fixed to the main
board or the casing using three screws.

Fingerprint Sensor Atmel recommends fixing the sensor by inserting it into the casing’s groove. Care should

be given to ensuring that:

• The casing provides sufficient aeration

• The board is implemented vertically with the flex connector outputs oriented
downwards

• The sensor is protected from direct exposure to rain when used outdoors

Connection of the Module Board to the Motherboard

The standalone module board measures 55 mm by 72 mm. It has three screw holes for
easy fixing to the motherboard or casing of the final system. Connection to the mother­board is achieved through two connectors each comprising 2 x 25 pins, which are
located on the sides of the module board. The height of the components under the mod­ule must not exceed 5 mm.

Figure 7. Module Board Mechanical Data

72 mm

Component Side

ATMEL

55 mm

3 mm

5.5 mm

4.5 mm

56.00

56.00

11.6 mm

Solder Side

2

1

49

50

1

2

49 50

J1J2

5391A–BIOM–09/04

42.11

12.90

8.00

8.00

9

Electrical Integration The motherboard must at least provide power supplies and the required components in

order to implement the desired interfaces. Atmel recommends using a linear power sup­ply of 3.3V to power the standalone module.

An example of a possible implementation is given in the Development Kit documenta­tion (this kit can be ordered through your local Atmel distributor). Reading this
documentation is strongly recommended to proceed with accurate programming of the
board application.

10

AT77SM0101BCB02VKE

5391A–BIOM–09/04

Evaluation and Development Kit

Figure 8. AT77SM0101BCB02VEK

AT77SM0101BCB02VKE

AT77SM0101BCB02VEK Content

Authentication Software and SDK

This kit includes:

• A demo kit board with an integrated biometric module

• A power supply with adapters for international power outlets

• A crossed Ethernet cable

• A serial cable

• A "Quick Start" guide

• A CD-ROM comprising all the necessary tools and documentation

The Development Kit includes a complete software SDK for easy access to the Finger­Chip’s hardware (image capture). This SDK also allows the user to control the bio­engine (authentication software) and manage the database through high-level functions.

The authentication software is directly preloaded onto the module. The SDK also
includes a communication protocol to control the module from a PC.

5391A–BIOM–09/04

11

Stack Schematics

Figure 9. Stack Schematics

Module Board

Embedded Application

Atmel SDK

FingerChip Lib

FingerChip Driver

AT77C101B

Fingerprint Sensor

The fingerprint acquisition channel runs through Atmel's SDK

Enrollment, verification and identification through the bio-engine but controlled
by Atmel's SDK

Database manipulation is achieved through Atmel's SDK or directly through
the bio-engine

Generic communication with the outside world is controlled via GPIOs,
the Ethernet or USB port or serial link for which drivers are available and
directly accessible from the application layer

Static drivers

Bio-engine Lib

DB Lib

GPIOs

Driver

Ethernet

Layers

USB

Driver

J1 and J2

Extension Connectors

Serial
Driver

12

Dynamic drivers

AT77SM0101BCB02VKE

5391A–BIOM–09/04

Packaging Mechanical Data

Figure 10. Product Reference AT77C101B-CB02V

All dimensions in mm

AT77SM0101BCB02VKE

5.9 max

FLEX OUTPUT

1.5 MAX

BB Section

0.2 min

1.9 ± 0.4

2.9 ± 0.5

9.85 ± 0.3

4.1 ± 0.2

0.83 ± 0.11

(x 3)

-0.23

+0.15

1.5

B

5.2 max

-0.01

+0.07

1.66

8.9 ± 0.5

8.8 ± 0.2

1.25 ± 0.5

26.6 ± 0.3

14.35

+0.04

-0.01

+0.33

0.75

-0.25

2.39 ± 0.5

+0.08

R0.75

-0.12

FLEX OUTPUT

(x 3)

0.8 MAX

4.1 ± 0.5

B

6.3 ± 0.1

1.78 ± 0.5 (x 2)

5391A–BIOM–09/04

13

Ordering Information The standalone module is available in Europe through Atmel distributors.

Two references are available for the module:

• AT77SM0101BCB02VKE (includes IKENDI bio-engine license)

• AT77SM0101BCB02VBS (includes Bioscrypt Inc. bio-engine license)

The Development Kit (reference AT77SM0101BCB02VEK) is also available in Europe
through Atmel’s distributors.

Naming Convention

Figure 11. Naming Convention

FingerChip Biometric Module Family

Atmel prefix

FingerChip Sensor Type

Package

CB02: Chip On Board (COB)

with connector

AT77SM0

101B

CB02

xx

V

Bio-engine/Evaluation Kit:
KE: IKENDI Bio-engine
BS: Bioscrypt Bio-engine
EK: Evaluation Kit

Sensor temperature range

o

V: -40

C to +85o C

14

AT77SM0101BCB02VKE

5391A–BIOM–09/04

Atmel Corporation Atmel Operations

2325 Orchard Parkway
San Jose, CA 95131, USA
Tel: [phone]
Fax: [phone]

Regional Headquarters

Europe

Atmel Sarl
Route des Arsenaux 41
Case Postale 80
CH-1705 Fribourg
Switzerland
Tel: [phone]
Fax: [phone]

Asia

Room 1219
Chinachem Golden Plaza
77 Mody Road Tsimshatsui
East Kowloon
Hong Kong
Tel: [phone]
Fax: [phone]

Japan

9F, Tonetsu Shinkawa Bldg.
1-24-8 Shinkawa
Chuo-ku, Tokyo 104-0033
Japan
Tel: [phone]
Fax: [phone]

Memory

2325 Orchard Parkway
San Jose, CA 95131, USA
Tel: [phone]
Fax: [phone]

Microcontrollers

2325 Orchard Parkway
San Jose, CA 95131, USA
Tel: [phone]
Fax: [phone]

La Chantrerie
BP 70602
44306 Nantes Cedex 3, France
Tel: [phone]
Fax: [phone]

ASIC/ASSP/Smart Cards

Zone Industrielle
13106 Rousset Cedex, France
Tel: [phone]
Fax: [phone]

1150 East Cheyenne Mtn. Blvd.
Colorado Springs, CO 80906, USA
Tel: [phone]
Fax: [phone]

Scottish Enterprise Technology Park
Maxwell Building
East Kilbride G75 0QR, Scotland
Tel: [phone]
Fax: [phone]

RF/Automotive

Theresienstrasse 2
Postfach 3535
74025 Heilbronn, Germany
Tel: [phone]
Fax: [phone]

1150 East Cheyenne Mtn. Blvd.
Colorado Springs, CO 80906, USA
Tel: [phone]
Fax: [phone]

Biometrics/Imaging/Hi-Rel MPU/
High Speed Converters/RF Datacom

Avenue de Rochepleine
BP 123
38521 Saint-Egreve Cedex, France
Tel: [phone]
Fax: [phone]

Literature Requests

www.atmel.com/literature

Disclaimer: Atmel Corporation makes no warranty for the use of its products, other than those expressly contained in the Company’s standard
warranty which is detailed in Atmel’s Terms and Conditions located on the Company’s web site. The Company assumes no responsibility for any
errors which may appear in this document, reserves the right to change devices or specifications detailed herein at any time without notice, and
does not make any commitment to update the information contained herein. No licenses to patents or other intellectual property of Atmel are
granted by the Company in connection with the sale of Atmel products, expressly or by implication. Atmel’s products are not authorized for use
as critical components in life support devices or systems.

© Atmel Corporation 2004. All rights reserved. Atmel® and combinations thereof, DataFlash® and FingerChip® are the registered trademarks
of Atmel Corporation or its subsidiaries. ARM
Linus Torvalds. Bioscrypt
terms and product names may be the trademarks of others.

®

is the registered trademark of Bioscrypt Inc. IKENDI® is the registered trademark of IKENDI Software AG. Other

®

and ARM9® are the registered trademarks of ARM Ltd. Linux® is the registered trademark of

Printed on recycled paper.

5391A–BIOM–09/04