5391ABIOM09/04
Features
Module Size: 55 x 72 mm (Smaller than Smart Card)
Microcontroller: Atmel ARM9
-based AT91RM9200
SDRAM: 128 Mbits
Flash: Atmel DataFlash
32 Mbits
Fingerprint Sensor: Atmel FingerChip
AT77C101B-CB02V
Operating Temperature Range: -30
C to +65 C
Operating Voltage: 3.3V 10%
Power Consumption: 200 mA in Typical Conditions
Operating System: Linux
(Kernel 2.4.19)
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
Description
This document describes the specifications of Atmel's AT77SM0101BCB02VKE Fin-
gerChip 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.
The AT77SM0101BCB02VKE provides great flexibility because of its memory capac-
ity and powerful microcontroller loaded with the Linux operating system, and features
many possible interfaces, including Ethernet. The AT77SM0101BCB02VKE biometric
m o d u l e r e q u i r e s t h e p u r c h a s e o f t h e E v a l u a t i o n / D e v e l o p m e n t K i t
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
FingerChip
Biometric
Module
AT77SM0101BCB02VKE
2
AT77SM0101BCB02VKE
5391ABIOM09/04
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 finger-
print 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
Motherboard
Connectors
AT91RM9200
SDRAM
16 MB
Flash
4 MB
AT77C101B-CB02V
Control
8 Bits
Linear
Regulator
GPIOS Interfaces
3.3V
3.3V
1.8V
32-bit
Data Bus
SPI
3
AT77SM0101BCB02VKE
5391ABIOM09/04
Technical
Description
Atmel's FingerChip biometric module includes the AT77C101B-CB02V FingerChip sen-
sor (8-bit parallel interface) connected through a flex cable to the module itself.
Module Size and Length
of Flex
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
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.
Description of
Motherboard Interface
Figure 4. Motherboard Interface
55 mm
72 mm
50 mm
9.85 mm
26.6 mm
49
50
49
50
1
2
1
2
4
AT77SM0101BCB02VKE
5391ABIOM09/04
Note:
Pins 11, 12 and 14: do not use when the AT77C101B is connected to the module.
Table 1. J1 Pin Description
Pin
Description
Pin
Description
1
GND
2
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
5
AT77SM0101BCB02VKE
5391ABIOM09/04
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
Table 2. J2 Pin Description
Pin
Description
Pin
Description
1
GND
2
3V3
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
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