Rainbow Electronics AT77SM0101BCB02VKE - Manual (Page 7)

7
AT77SM0101BCB02VKE
5391A–BIOM–09/04
Storage Capacity
Figure 5. RAM Memory Mapping
Figure 6. DataFlash Memory Mapping
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 -4 rate using an IKENDI ® algorithm
• 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
Software
Operating System
Driver Modules
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.
Used by Ramdisk
Kernel
Code
Used by Kernel Free
6 MB 1.5 MB 4 MB 4.5 MB
16 MB RAM
Compressed
Kernel
Compressed Ramdisk
AT77SM0101BCB02VKE Compressed Ramdisk < 2 MB
700 kB 3 MB 300 kB
4 MB DataFlash
16 kB
Templates Database
Storage