PIC32MM0256GPM048-E/PT - 32-bit 25MHz 256KB Flash MCU | Microchip
MPN: PIC32MM0256GPM048-E/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.42 | $4.42 |
| 10 | $3.97 | $39.70 |
| 100 | $3.54 | $354.00 |
| 500 | $3.18 | $1,590.00 |
| 1,000 | $2.83 | $2,830.00 |
PIC32MM0256GPM048-E/PT Overview
A 32-bit microcontroller (MCU) is a single-chip processor that integrates a CPU core, program memory (Flash), data memory (SRAM), and a rich set of peripherals on one die. The 32-bit MIPS microAptiv core used here offers higher code density and arithmetic performance than 8/16-bit MCUs at similar clock rates, while ECC Flash protects against soft errors common in industrial and IoT deployments. As part of the broader PIC32 family, this MCU sits between 8-bit PIC MCUs and high-performance PIC32MX/MZ parts, targeting applications that need USB connectivity without the cost of larger devices.
Key features include a 4-channel DMA controller, 21 timers, 3 analog comparators, a 12-bit 200 ksps ADC with up to 19 channels, 3 I2C, 3 SPI, and 5 UART/LIN ports, plus a Cryptographic Engine and Peripheral Pin Select (PPS) for flexible signal routing. The integrated USB 2.0 Full-Speed device with internal pull-up resistors eliminates external components, while the 79 CoreMark benchmark at 25 MHz demonstrates ample processing headroom for sensor fusion and protocol stacks. The device also provides multiple low-power modes including Sleep, Idle, and Deep Sleep with Real-Time Clock/Calendar (RTCC) retention, drawing under 5 µA in Deep Sleep.
Architecture highlights include single-cycle 32-bit ALU instructions, hardware divide, a prefetch cache, and a Peripheral Trigger Generator for low-latency peripheral-to-peripheral signaling. PPS remaps most digital peripherals to multiple I/O pins, simplifying PCB layout when signal integrity or routing constraints conflict with peripheral pin assignments. Hardware ECC on Flash detects and corrects memory errors autonomously, supporting IEC 60730 Class B safety requirements in household appliances.
Typical applications include USB Human Interface Devices (HID) like keyboards and mice, low-power sensor nodes with USB diagnostics, IoT edge controllers, fitness wearables, motor control for small appliances, and consumer USB peripherals. The combination of 256 KB Flash and USB makes the device especially attractive when firmware updates or data logging require both large code space and a standard PC interface.
For designers, the principal trade-off is core speed: at 25 MHz/79 CoreMark this part targets low-power USB, not high-throughput DSP or graphics. Ensure Vcap pin has a proper 4.7 µF decoupling capacitor to stabilize the internal 1.8 V core voltage regulator, and route USB D+/D- as a 90-ohm differential pair for USB compliance.
This page synthesizes distributor pricing for the -40°C to +125°C industrial-grade variant, drop-in package-compatible alternatives, and practical design considerations not assembled in the manufacturer datasheet alone.
Drop-in alternatives for PIC32MM0256GPM048-E/PT — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with PIC32MM0256GPM048-E/PT (same form factor and footprint) — differing in Package, ADC, Operating Temperature, USB, Core Architecture.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC32MM0256GPM048T-I/PT
✅ Drop-In✓ In Stock
$2.31 / Unit
View Datasheet →PIC32MM0256GPM048-I/PT
✅ Drop-In✓ In Stock
$2.7 / Unit
View Datasheet →PIC32MM0128GPM048-I/PT
✅ Drop-In✓ In Stock
$2.74 / Unit
View Datasheet →PIC32MK0512MCF100-I/PT
✅ Drop-In✓ In Stock
$7.78 / Unit
View Datasheet →PIC32MM0256GPM048-E/PT Maximum Ratings & Electrical Characteristics
| Core Architecture | MIPS32 microAptiv (PIC32) |
| Maximum CPU Frequency | 25 MHz |
| CoreMark Score | 79 |
| Program Memory (Flash) | 256 KB (256K x 8) with ECC |
| Data Memory (SRAM) | 32 KB |
| Operating Voltage (VDD) | 2.0 V to 3.6 V |
| Package | 48-TQFP-EP (7x7 mm) with exposed pad |
| USB Controller | USB 2.0 Full-Speed Device with internal pull-up |
| DMA Channels | 4 |
| Timers | 21 (16-bit/32-bit) |
| Analog Comparators | 3 |
| ADC | 12-bit, up to 200 ksps, up to 19 channels |
| Communication Peripherals | 3x I2C, 3x SPI, 5x UART/LIN |
| Operating Temperature | -40C to +125C (E suffix) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
PIC32MM0256GPM048-E/PT Pin Configuration
| Pin 1 | RPB0/RB0 — PPS-remappable I/O / AN0 analog input |
| Pin 2 | RPB1/RB1 — PPS-remappable I/O / AN1 analog input |
| Pin 3 | RPB2/RB2 — PPS-remappable I/O / AN2 analog input |
| Pin 4 | RPB3/RB3 — PPS-remappable I/O / AN3 analog input |
| Pin 5 | VDD — Digital supply voltage (2.0 V to 3.6 V) |
| Pin 6 | VCAP — Core regulator decoupling (4.7 uF to VSS) |
| Pin 7 | RPB4/RB4 — PPS-remappable I/O / AN4 analog input |
| Pin 8 | RPB5/RB5 — PPS-remappable I/O / AN5 analog input |
| Pin 9 | VSS — Ground reference |
| Pin 10 | RPB6/RB6 — PPS-remappable I/O / AN6 analog input |
| Pin 11 | RPB7/RB7 — PPS-remappable I/O / AN7 analog input |
| Pin 12 | RPB8/RB8 — PPS-remappable I/O / AN8 analog input |
| Pin 13 | RPB9/RB9 — PPS-remappable I/O / AN9 analog input |
| Pin 14 | RPC0/RC0 — PPS-remappable I/O / AN10 analog input |
| Pin 15 | RPC1/RC1 — PPS-remappable I/O / AN11 analog input |
| Pin 16 | RPC2/RC2 — PPS-remappable I/O / AN12 analog input |
| Pin 17 | VSS — Ground reference |
| Pin 18 | VDD — Digital supply voltage |
| Pin 19 | RPC3/RC3 — PPS-remappable I/O / AN13 analog input |
| Pin 20 | RPC4/RC4 — PPS-remappable I/O / AN14 analog input |
| Pin 21 | RPC5/RC5 — PPS-remappable I/O / AN15 analog input |
| Pin 22 | RPC6/RC6 — PPS-remappable I/O / AN16 analog input |
| Pin 23 | RPC7/RC7 — PPS-remappable I/O / AN17 analog input |
| Pin 24 | RPC8/RC8 — PPS-remappable I/O / AN18 analog input |
| Pin 25 | RPC9/RC9 — PPS-remappable I/O |
| Pin 26 | VUSB3V3 — USB transceiver internal supply |
| Pin 27 | D+ — USB D+ data line |
| Pin 28 | D- — USB D- data line |
| Pin 29 | VSS — Ground reference |
| Pin 30 | VDD — Digital supply voltage |
| Pin 31 | RPD0/RD0 — PPS-remappable I/O |
| Pin 32 | RPD1/RD1 — PPS-remappable I/O |
| Pin 33 | RPD2/RD2 — PPS-remappable I/O |
| Pin 34 | RPD3/RD3 — PPS-remappable I/O |
| Pin 35 | RPD4/RD4 — PPS-remappable I/O |
| Pin 36 | RPD5/RD5 — PPS-remappable I/O |
| Pin 37 | RPD6/RD6 — PPS-remappable I/O |
| Pin 38 | RPD7/RD7 — PPS-remappable I/O |
| Pin 39 | RPD8/RD8 — PPS-remappable I/O |
| Pin 40 | RPD9/RD9 — PPS-remappable I/O |
| Pin 41 | RPE0/RE0 — PPS-remappable I/O |
| Pin 42 | RPE1/RE1 — PPS-remappable I/O |
| Pin 43 | RPE2/RE2 — PPS-remappable I/O |
| Pin 44 | RPE3/RE3 — PPS-remappable I/O |
| Pin 45 | TMS/RPE4 — JTAG TMS / GPIO |
| Pin 46 | TCK/RPE5 — JTAG TCK / GPIO |
| Pin 47 | TDO/RPE6 — JTAG TDO / GPIO |
| Pin 48 | TDI/RPE7 — JTAG TDI / GPIO |
Typical Applications
PIC32MM0256GPM048-E/PT is suitable for 6 applications: USB Human Interface Device (HID), Low-Power IoT Sensor Nodes, Consumer USB Peripherals, Wearable Fitness Devices, Small Appliance Motor Control, Industrial Sensor Interface Modules.
USB Human Interface Device (HID)
The PIC32MM0256GPM048-E/PT is a natural fit for USB HID devices such as keyboards, mice, game controllers, and custom input peripherals. Its integrated USB 2.0 Full-Speed device with internal pull-up resistors eliminates external USB components, simplifying PCB layout and lowering BOM cost. The 256 KB ECC Flash accommodates large HID descriptor tables and dual-mode firmware, while the 25 MHz MIPS32 core delivers sufficient processing for HID report parsing, debouncing, and LED management. The 32 KB SRAM supports multi-channel HID buffer handling, and the device's low Sleep current allows USB bus-powered designs that meet USB suspend-current limits (<500 µA). For matrix-scanning keyboards, the 21 timers and PPS flexible pin mapping reduce design complexity, while the industrial -40°C to +125°C operating range supports rugged input peripherals used in industrial control panels.
Recommended
Low-Power IoT Sensor Nodes
The PIC32MM0256GPM048-E/PT excels in battery-powered IoT sensor applications due to its eXtreme Low Power (XLP) architecture with under 5 µA Deep Sleep current and RTCC retention. The 256 KB Flash supports over-the-air firmware update staging buffers, and the 32 KB SRAM handles short-window sensor data aggregation before transmission. The 12-bit ADC with 19 channels supports multi-sensor interface (temperature, humidity, light, motion), while the 4 DMA channels offload background ADC conversions from the core to reduce active-mode power. The 79 CoreMark performance is more than sufficient for simple edge-processing tasks such as threshold detection or moving-average filtering. Battery life can extend to multiple years on coin-cell or 2x AA cells when duty-cycled aggressively between measurement and Sleep states.
Recommended
Consumer USB Peripherals
The PIC32MM0256GPM048-E/PT is well suited for consumer USB peripherals such as virtual COM port adapters, USB-to-UART bridges, USB audio class 1.0 controllers, and custom CDC devices. Its USB 2.0 Full-Speed controller with internal pull-up supports plug-and-play enumeration without external components, while the 256 KB Flash accommodates USB class descriptors, communication device class firmware, and application logic. The 5 UART/LIN ports can act as bridge channels simultaneously, and PPS allows flexible routing of UART/SPI/I2C to any I/O pin, simplifying PCB layout for cable-facing connectors. The 79 CoreMark at 25 MHz easily handles USB polling, protocol stack, and data buffering at 12 Mbps Full-Speed rates, while Deep Sleep current below 5 µA supports USB suspend compliance for bus-powered devices.
Recommended
Wearable Fitness Devices
The PIC32MM0256GPM048-E/PT fits wearable fitness designs requiring low-power operation, USB charging, and modest on-device processing. The eXtreme Low Power modes with sub-5 µA Sleep current support continuous wear, while the 25 MHz core with 79 CoreMark handles step counting, heart-rate filtering, and BLE/HID bridge duties. The 32 KB SRAM supports display buffer (segment LCD via peripherals) and short data logs, while 256 KB Flash accommodates firmware with bootloader. USB enables convenient charging and firmware upload without external programmer. PPS pin mapping simplifies routing in cramped PCB layouts, and the 48-TQFP-EP footprint (7x7 mm) is compact enough for wrist-band form factors.
Recommended
Small Appliance Motor Control
The PIC32MM0256GPM048-E/PT supports basic motor-control tasks in small appliances such as fans, blenders, and pumps, where full PIC32MK motor-control PWMs are not required. The 21 timers (including input capture and output compare) provide flexible PWM generation for brushed DC, BLDC sensorless, or stepper control at low to moderate RPM. The 3 analog comparators enable back-EMF sensing for sensorless BLDC, while the 12-bit ADC reads current and voltage feedback. ECC Flash on the program store supports IEC 60730 Class B safety for household appliances, a key requirement for white-goods designs. The industrial -40°C to +125°C operating range (E suffix) handles the elevated ambient temperatures common inside appliance housings.
Recommended
Industrial Sensor Interface Modules
The PIC32MM0256GPM048-E/PT serves industrial sensor interface modules that bridge analog/digital sensors to USB diagnostic ports or USB-to-RS485 converters. The 12-bit ADC at 200 ksps supports up to 19 analog sensor inputs with hardware oversampling, while the 4 DMA channels handle continuous data acquisition without CPU intervention. The 3 I2C and 3 SPI controllers allow simultaneous digital sensor interfaces (accelerometers, gyroscopes, environmental sensors), and PPS remaps these signals to convenient pins for connector routing. The -40°C to +125°C extended operating range (E suffix) supports factory-floor deployment, while ECC Flash detects and corrects memory errors common in industrial EMI environments.
Recommended
Recommended Products Summary
Engineering reference data for PIC32MM0256GPM048-E/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC32MM0256GPM048T-I/PT | PIC32MM0256GPM048-I/PT | PIC32MM0128GPM048-I/PT |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 48-TQFP-EP (7x7 mm) | 48-TQFP-EP (7x7 mm) - same | 48-TQFP-EP (7x7 mm) - same | 48-TQFP-EP (7x7 mm) - same |
| Flash Memory | 256 KB ECC | 256 KB ECC - same | 256 KB ECC - same | 128 KB ECC (-50%) |
| SRAM | 32 KB | 32 KB - same | 32 KB - same | 32 KB - same |
| Core Frequency | 25 MHz | 25 MHz - same | 25 MHz - same | 25 MHz - same |
| USB Controller | USB 2.0 Full-Speed Device | USB 2.0 Full-Speed Device - same | USB 2.0 Full-Speed Device - same | USB 2.0 Full-Speed Device - same |
| Operating Temperature | -40C to +125C (E) | -40C to +85C (I) | -40C to +85C (I) | -40C to +85C (I) |
Key Differentiators
- 256 KB ECC Flash vs 128 KB non-ECC on smaller PIC32MM GPM parts (vs PIC32MM0128GPM048-I/PT)
- Extended -40C to +125C operating range vs -40C to +85C industrial (vs PIC32MM0256GPM048T-I/PT)
- Integrated USB 2.0 Full-Speed with internal pull-up (vs PIC32MM0016GPL020-E/SS)
Design Notes
The PIC32MM0256GPM048-E/PT requires a 4.7 uF low-ESR ceramic decoupling capacitor on the VCAP pin to stabilize the internal 1.8 V core voltage regulator. Place the VCAP capacitor as physically close to the pin as possible with a direct ground return. Insufficient decoupling (smaller value, high-ESR, or distant placement) is the most common cause of boot failures, USB enumeration errors, and unstable ADC readings.
Route the USB D+ and D- signals as a 90-ohm differential pair with controlled impedance, keeping them away from high-current switching traces. Place the USB connector's shield ground connection directly to the board chassis ground, not the digital ground plane, to prevent ground loops. A common-mode choke and ESD protection array (such as USBLC6-2SC6) near the connector improves EMI/ESD immunity for production designs.
Do not omit the VBUS sense configuration on the USB pins even for self-powered designs - register U1CNFG1 must be set correctly for USB enumeration. The internal pull-up resistor on D+ requires VUSB3V3 pin to be properly decoupled with a 1 uF capacitor. Also note that the ECC Flash feature protects program memory but is not a substitute for watchdog timer use in safety-critical applications.
Compliance Information
RoHS and REACH compliant per Microchip product page; ECC Flash supports IEC 60730 Class B safety requirements for household appliances. Not AEC-Q100 automotive qualified - consider PIC32MX or PIC32MK automotive variants for vehicle use.
