Atmel’s AT91SAM7FP105 is a low pincount FingerChip processor based on the 32-bit ARM RISC processor. It features a on-chip biometric engine performing enrollment verification and identification, an internal record cache of up to 25 records and a

Schematics for JTAG(for arm CPUS) over USB

微软官方USB HID OVER I2C文档，详细介绍了HID OVER I2C