8.12.6.1 Memory Mapping

The SECUMOD embeds 5 Kbytes of SECURAM split in two parts: the lower 4 Kbytes are erased in case of intrusion (BUSRAM4KB) while the upper 1 Kbyte is never erased (BUSRAM1KB). A 256-bit register bank is available as an additional memory and is totally erased in case of intrusion (BUREG256b).

All memories support 8-bit, 16-bit and 32-bit access sizes.

To optimize power consumption, the transfers between the processor and these memories are slower than for other memories in the device.