Description

The Microchip PIC32CXMTSH series is a family of system-on-chip (SoC) solutions for residential single and dual-phase metering applications, offering up to class 0.2 metrology accuracy, 3000:1 dynamic range for specific meter configurations within the industrial temperature range, and compliance with ANSI C12.20-2002 and IEC 62053-22 standards.

These metrology-enabled microcontrollers offer an unprecedented level of integration and flexibility around dual 32-bit Arm® Cortex®-M4F RISC processors to allow integration of the application layer, communications layers and metrology functions in a single device.

With the Application core running at a maximum speed of 200 MHz, and up to 240 MHz for the Metrology core, the devices embed up to 2 Mbytes of embedded Flash, up to 560 Kbytes of SRAM and 16 Kb of Instruction and 8 Kb of Data Cache or Tightly Coupled Memory (TCM) on-chip.

A QSPI interface with eXecute-in-Place (XiP) coupled with on-the-fly AES128 encryption bridge futureproofs the devices and ensures platform scalability in case of memory extension needs or changing system requirements.

The PIC32CXMTSH series has been designed to meet the requirements of international metering standards, with a distinct separation between application or communication and metrology functions. Each core features an embedded Memory Protection Unit (MPU) and a high-speed bus matrix, ensuring protection of the legally relevant code from both core and peripherals access.

A Secure Boot and secure key storage coupled with advanced cryptographic/Hash hardware accelerators, such as ECC, RSA, AES128/256, and SHA256/512, support the different encryption and authentication protocols.

The peripheral set includes metrology-specific precision voltage reference and up to five simultaneously sampled Delta-Sigma ADC subsystems, supporting two voltages, two currents, and one temperature sensor measurement.

The series also features a segmented LCD controller, anti-tampers, Floating Point Unit (FPU), MPU, FLEXCOM peripherals supporting I²C, SPI, UART/USART interfaces, three PWMs for pulse output functions, 12-channel general-purpose 32-bit timers, 12-bit ADC, analog comparators and a battery backed-up RTC running as low as 1 μA.

The PIC32CXMTSH family of devices are available in an EP-TQFP128 pin-exposed package.

See the table Configuration Summary for device configuration versus packages.