PIC32MM0256GPM028-E/M6
PIC32MM0256GPM028-E/M6 - 25MHz 32-bit MCU w/256KB Flash | Microchip
The Microchip PIC32MM0256GPM028-E/M6 is an eXtreme low-power 32-bit microcontroller from the PIC32MM GPM family, built on the MIPS32 microAptiv core, integrating 256KB of ECC-protected Flash and 32KB of SRAM in a compact 28-pin UQFN (4x4 mm) package. It operates at up to 25 MHz and delivers 79 CoreMark performance, while consuming only a few microamps in deep sleep modes, making it ideal for USB-equipped battery-powered and energy-harvesting applications.
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash), data memory (SRAM), and a rich set of peripherals. The 32-bit MCU class extends 8/16-bit devices with higher compute throughput, larger addressable memory, richer DSP support, and modern peripherals such as USB, CAN, and capacitive touch sensing. PIC32MM GPM sits within Microchip's PIC32 portfolio as the lowest-power, most cost-effective branch, hierarchically: 32-bit MCU -> ARM/MIPS architecture -> PIC32 family -> PIC32MM GPM sub-family.
Key features include a USB 2.0 Full-Speed Device/Host/OTG controller, 4-channel DMA, Configurable Logic Cell (CLC), 12-bit ADC, 10-bit DAC, multiple PWM/SCCP/MCCP timers, RTCC, I2C, SPI, UART, and 21 general-purpose I/O pins. Hardware ECC on Flash and RAM provides enhanced reliability for safety-conscious designs, while a 4-wire programming/debug interface (PGDx/PGECx) enables MPLAB X IDE and ICD support.
The device uses Microchip's proprietary microMIPS ISA option to balance code density and throughput, with the MIPS32 microAptiv core providing deterministic interrupt latency. Internal LDO and a flexible 2.0V-3.6V supply range support single-cell Li-ion or 3.3V regulated rails, with multiple low-power modes (Sleep, Deep Sleep, Deep Sleep with RTCC) achieving deep-sleep currents in the low microamp range.
Typical applications include consumer USB HID devices such as mice and game controllers, IoT sensor nodes, low-power wearables, smart home peripherals, battery-powered medical monitors, and industrial HMI panels. The combination of USB, large memory, and ultra-low sleep current is uniquely suited to tethered or intermittently connected products.
When designing with this device, place the 4x4 UQFN land pattern with proper thermal vias under the exposed pad, route the USB DP/DM pair as a 90-ohm differential with controlled impedance, and follow Microchip's MPLAB Harmony framework for peripheral drivers. Note the -E/M6 suffix denotes the -40C to +125C extended temperature grade and UQFN-28 package; -I/M6 (industrial -40C to +85C) is also available for less demanding environments.
This page synthesizes distributor pricing, drop-in same-package alternatives within the PIC32MM GPM family, and practical low-power design guidance not consolidated on the manufacturer datasheet.
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