ATSAM4CMP32-DB [Microchip]

The SAM4CM series features dual 32-bit ARM Cortex-M4 RISC processors running at 120MHz each, up to 2 Mbytes of embedded Flash, 304 Kbytes of SRAM, and on-chip cache. It supports independent partitions for signal processing, application, and communications firmware via a dual-core architecture. The peripheral set includes metrology-specific precision voltage reference, up to seven Sigma-Delta ADC subsystems, cryptographic features (AES, TRNG, RSA, ECC), anti-tamper, FPU, multiple interfaces (USARTs, UARTs, TWIs, SPIs), PWMs, timers, ADC, RTC, and an LCD controller. A dedicated Cortex-M4F core manages metrology functions for distinct separation from application/communication functions.