PIC32MM0256GPM048-E/PT - 32-bit 25MHz 256KB Flash MCU | Microchip
MPN： PIC32MM0256GPM048-E/PT ✓ 啟用中PIC32MM0256GPM048-E/PT 概覽
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.
直接替換替代品，適用於 PIC32MM0256GPM048-E/PT — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： PIC32MM0256GPM048-E/PT （相同外形與佔位） — 差異在於 Package, ADC, Operating Temperature, USB, Core Architecture.
PIC32MM0256GPM048T-I/PT
✅ 直接替換聯絡詢價
查看資料表 →PIC32MM0256GPM048-I/PT
✅ 直接替換聯絡詢價
查看資料表 →PIC32MM0128GPM048-I/PT
✅ 直接替換聯絡詢價
查看資料表 →PIC32MK0512MCF100-I/PT
✅ 直接替換聯絡詢價
查看資料表 →PIC32MM0256GPM048-E/PT 最大額定值與電氣特性
| 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 |
| 封裝 | 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 |
| 工作溫度 | -40C to +125C (E suffix) |
| 安裝類型 | Surface Mount |
| RoHS 狀態 | Compliant |
PIC32MM0256GPM048-E/PT 腳位配置
| 腳位 1 | RPB0/RB0 — PPS-remappable I/O / AN0 analog input |
| 腳位 2 | RPB1/RB1 — PPS-remappable I/O / AN1 analog input |
| 腳位 3 | RPB2/RB2 — PPS-remappable I/O / AN2 analog input |
| 腳位 4 | RPB3/RB3 — PPS-remappable I/O / AN3 analog input |
| 腳位 5 | VDD — Digital supply voltage (2.0 V to 3.6 V) |
| 腳位 6 | VCAP — Core regulator decoupling (4.7 uF to VSS) |
| 腳位 7 | RPB4/RB4 — PPS-remappable I/O / AN4 analog input |
| 腳位 8 | RPB5/RB5 — PPS-remappable I/O / AN5 analog input |
| 腳位 9 | VSS — Ground reference |
| 腳位 10 | RPB6/RB6 — PPS-remappable I/O / AN6 analog input |
| 腳位 11 | RPB7/RB7 — PPS-remappable I/O / AN7 analog input |
| 腳位 12 | RPB8/RB8 — PPS-remappable I/O / AN8 analog input |
| 腳位 13 | RPB9/RB9 — PPS-remappable I/O / AN9 analog input |
| 腳位 14 | RPC0/RC0 — PPS-remappable I/O / AN10 analog input |
| 腳位 15 | RPC1/RC1 — PPS-remappable I/O / AN11 analog input |
| 腳位 16 | RPC2/RC2 — PPS-remappable I/O / AN12 analog input |
| 腳位 17 | VSS — Ground reference |
| 腳位 18 | VDD — Digital supply voltage |
| 腳位 19 | RPC3/RC3 — PPS-remappable I/O / AN13 analog input |
| 腳位 20 | RPC4/RC4 — PPS-remappable I/O / AN14 analog input |
| 腳位 21 | RPC5/RC5 — PPS-remappable I/O / AN15 analog input |
| 腳位 22 | RPC6/RC6 — PPS-remappable I/O / AN16 analog input |
| 腳位 23 | RPC7/RC7 — PPS-remappable I/O / AN17 analog input |
| 腳位 24 | RPC8/RC8 — PPS-remappable I/O / AN18 analog input |
| 腳位 25 | RPC9/RC9 — PPS-remappable I/O |
| 腳位 26 | VUSB3V3 — USB transceiver internal supply |
| 腳位 27 | D+ — USB D+ data line |
| 腳位 28 | D- — USB D- data line |
| 腳位 29 | VSS — Ground reference |
| 腳位 30 | VDD — Digital supply voltage |
| 腳位 31 | RPD0/RD0 — PPS-remappable I/O |
| 腳位 32 | RPD1/RD1 — PPS-remappable I/O |
| 腳位 33 | RPD2/RD2 — PPS-remappable I/O |
| 腳位 34 | RPD3/RD3 — PPS-remappable I/O |
| 腳位 35 | RPD4/RD4 — PPS-remappable I/O |
| 腳位 36 | RPD5/RD5 — PPS-remappable I/O |
| 腳位 37 | RPD6/RD6 — PPS-remappable I/O |
| 腳位 38 | RPD7/RD7 — PPS-remappable I/O |
| 腳位 39 | RPD8/RD8 — PPS-remappable I/O |
| 腳位 40 | RPD9/RD9 — PPS-remappable I/O |
| 腳位 41 | RPE0/RE0 — PPS-remappable I/O |
| 腳位 42 | RPE1/RE1 — PPS-remappable I/O |
| 腳位 43 | RPE2/RE2 — PPS-remappable I/O |
| 腳位 44 | RPE3/RE3 — PPS-remappable I/O |
| 腳位 45 | TMS/RPE4 — JTAG TMS / GPIO |
| 腳位 46 | TCK/RPE5 — JTAG TCK / GPIO |
| 腳位 47 | TDO/RPE6 — JTAG TDO / GPIO |
| 腳位 48 | TDI/RPE7 — JTAG TDI / GPIO |
典型應用
PIC32MM0256GPM048-E/PT 適用於 6 應用s: 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.
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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.
推薦
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.
推薦
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.
推薦
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.
推薦
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.
推薦
推薦產品摘要
工程參考資料，適用於 PIC32MM0256GPM048-E/PT — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | 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) |
主要差異化特點
- 256 KB ECC Flash vs 128 KB non-ECC on smaller PIC32MM GPM parts (對比PIC32MM0128GPM048-I/PT)
- Extended -40C to +125C operating range vs -40C to +85C industrial (對比PIC32MM0256GPM048T-I/PT)
- Integrated USB 2.0 Full-Speed with internal pull-up (對比PIC32MM0016GPL020-E/SS)
設計說明
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.
合規資訊
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.
