ATSAM4CMP-DB [Microchip]

The SAM4CM series is a seamless extension of Atmel's SAM4, SAM4CP and SAM4C family of microcontrollers and solutions for smart grid security and communications applications. These metrology-enabled devices offer an unprecedented level of integration and flexibility with dual 32-bit ARM® Cortex®-M4 RISC processors running at a maximum speed of 120MHz each, up to 2 Mbytes of embedded Flash, 304 Kbytes of SRAM and on-chip cache. The unique dual ARM Cortex-M4 architecture supports implementation of signal processing, application and communications firmware in independent partitions, and offers the ability to extend program and data memory via parallel external bus interface (EBI) to ensure scalability of the design to meet future requirements. The peripheral set includes metrology-specific precision voltage reference, up to seven (7) simultaneously sampled Sigma-Delta ADC subsystems supporting three (3) voltage and four (4) current measurement channels (polyphase versions only), an extensive set of embedded cryptographic features, anti-tamper, Floating Point Unit (FPU), four USARTs, two UARTs, two TWIs, four SPIs, three 16-bit PWMs, two 3-channel general-purpose 16-bit timers, 6-channel 10-bit ADC, battery-backed RTC with <1 µA consumption and a 38 x 6 segmented LCD controller.