tillitis-key/doc/system_description/fpga.md

# The TKey FPGA

## Introduction
The TKey

![The Application FPGA block diagram](../images/application_fpga_block_diagram.png)


### Top level


### Cores

#### Clock and reset


#### CPU
PicoRV32.


#### FW ROM


#### FW RAM


#### Application RAM


#### Timer


#### UART


#### TRNG


#### TK1