What is this device?
It is a nanoMODUL-164 SBC (Single Board Computer). The pictures are so similar I would bet money that this is the same part, not just a similar product.


  The nanoMODUL-164 brings Infineon 16-bit power and CAN connectivity to a very minimal form factor (47 x 38 mm). Based on the Infineon C164CI controller, the board delivers instruction cycles in 100ns, enabling speedy data throughput. The on-chip 8-channel A/D converter with 10-bit resolution, Full 2.0B CAN interface and all other controller signals extend to 1.27mm pitch pin headers aligning the board's edges. The standard memory configuration boasts 256KB of both SRAM and Flash memory.


Listed on Infineon's 3rd party Starter/Evaluation/Application Kits/Boards list

Produced by Phytec, Legacy Device, but full documentation available

Found it by googling "C164CI SBC"

Enjoy.