mole99 / leosoc-gfmpw-1

A simple dual-core SoC with true random number generators as payload.

leosoc-gfmpw-1

A simple dual-core SoC with true random number generators as payload.

• Two RV32I cores running in parallel
  • 32 word direct-mapped instruction cache for each core
• 4kB of shared memory
• SPI flash controller
• 2 UARTs
• 1 GPIO controller (24 I/Os)
• 15 different TRNGs

It uses the foundry provided 512x8 SRAM macros.

True Random Number Generators

#ring oscillators	#inverters per oscillator	macro width and height
1	3	70
1	5	70
1	7	70
2	3	75
2	5	75
2	7	75
8	3	80
8	5	85
8	7	90
32	3	130
32	5	135
32	7	140
128	3	230
128	5	240
128	7	250

Memory Map

• 0x00000000 RAM
• 0x02000000 Flash
• 0x03000000 UART0
• 0x04000000 UART1
• 0x05000000 GPIO0
• 0x06000000 TRNG0
• 0x0F000000 Blinky