PIC32MM0256GPM048-I/M4 - 32-bit 256KB Flash USB MCU | Microchip
N.º da peça: PIC32MM0256GPM048-I/M4 ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $3.85 | $3,85 |
| 10 | $3.55 | $35,50 |
| 100 | $3.12 | $312,00 |
| 500 | $2.78 | $1.390,00 |
| 1.000 | $2.45 | $2.450,00 |
PIC32MM0256GPM048-I/M4 Visão geral
A 32-bit microcontroller (MCU) is an integrated circuit that combines a 32-bit CPU core, non-volatile program memory (Flash), volatile data memory (SRAM), and a rich peripheral set on a single silicon die. Within the broader semiconductor taxonomy, the PIC32MM GPM belongs to the category of low-power embedded microcontrollers, sitting between 8/16-bit MCUs and higher-performance application processors. It is widely used in battery-powered and energy-harvesting designs where MIPS-per-watt and deep-sleep current matter more than raw clock speed.
Key features include 79 CoreMark at 25 MHz, hardware ECC on Flash to detect and correct single-bit errors, microMIPS and MIPS32 dual instruction modes for code-density flexibility, and multiple low-power modes (Sleep, Idle, Deep Sleep). Serial peripherals cover USB 2.0 full-speed device, up to three I2C, three SPI, and three UART interfaces. The device also integrates a 32 kHz low-power internal RC oscillator suitable for RTC operation, plus a programmable 8 MHz Fast RC oscillator with PLL.
Architecturally, the PIC32MM GPM uses a Harvard bus architecture with separate Flash and SRAM paths, supports two-wire ICSP programming/debug (PGEDx/PGECx), and ships with a compact UQFN-48 (6x6 mm) footprint offering 38 general-purpose I/O pins. The integrated USB 2.0 full-speed PHY eliminates the need for an external transceiver for HID, CDC, and other low-speed USB device applications.
Typical applications include IoT sensor nodes, low-power wireless modules, USB human-interface devices (HIDs) such as keyboards and mice, consumer electronics, and small medical and industrial sensor designs requiring multi-year battery life. The combination of USB, ECC Flash, and aggressive sleep currents makes this part well-suited for designs balancing communication, reliability, and energy budget.
When designing with this MCU, ensure the exposed pad (EP) on the UQFN-48 package is soldered to the ground plane for thermal dissipation and signal integrity. For USB applications, route the D+/D- differential pair with 90 ohm impedance and keep the pair matched within 2 mm. Decouple VDD with 0.1 uF and 1 uF ceramics placed within 3 mm of each supply pin.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Alternativas drop-in para PIC32MM0256GPM048-I/M4 — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com PIC32MM0256GPM048-I/M4 (mesmo formato e footprint) — diferindo em ADC, Operating Temperature, Program Memory (Flash), USB, Package.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
PIC32MM0256GPM048T-I/M4
✅ Drop-In✓ Em estoque
$1.78 / unidade
Ver ficha técnica →PIC32MM0064GPM048-I/M4
✅ Drop-In✓ Em estoque
$1.92 / unidade
Ver ficha técnica →PIC32MM0128GPM048-I/M4
✅ Drop-In✓ Em estoque
$2.75 / unidade
Ver ficha técnica →PIC32MM0256GPM048-I/M4 Classificações máximas e características elétricas
| Core Architecture | MIPS32 microAptiv |
| Instruction Set | microMIPS / MIPS32 |
| Maximum CPU Speed | 25 MHz |
| CoreMark Score | 79 (at 25 MHz) |
| Program Memory (Flash) | 256 KB with ECC |
| Data Memory (SRAM) | 32 KB |
| Supply Voltage (VDD) | 2.0 V to 3.6 V |
| USB | USB 2.0 Full-Speed Device |
| ADC | 12-bit, up to 200 ksps, up to 28 channels |
| Timers | 21 |
| Analog Comparators | 3 |
| DMA Channels | 4 |
| I/O Pins | 38 |
| Communication Interfaces | I2C x3, SPI x3, UART x3 |
| Temperatura de operação | -40C to +85C (Industrial) |
| Encapsulamento | 48-pin UQFN (6x6 mm) with exposed pad |
| Tipo de montagem | Surface Mount |
| Status RoHS | Compliant |
Guia de Configuração de Pinos do PIC32MM0256GPM048-I/M4 48-pin uqfn (6x6 mm) with exposed pad
Configuração de pinos para PIC32MM0256GPM048-I/M4 (pacote 48-pin uqfn (6x6 mm) with exposed pad). Este CI digital inclui GPIO, interfaces de comunicação (UART, SPI, I2C) e pinos de alimentação. Consulte o datasheet do fabricante para funções alternativas dos pinos e opções de configuração. Essencial para projeto de sistemas embarcados e layout de PCB.
Nenhum dado detalhado de pinagem disponível para PIC32MM0256GPM048-I/M4.
Consulte a ficha técnica para a configuração completa dos pinos.
Aplicações típicas
PIC32MM0256GPM048-I/M4 é adequado para 6 aplicaçãos: USB HID Devices (Keyboard, Mouse, Gamepad), IoT Sensor Nodes (Battery-Powered), Industrial Sensor Interfaces, Consumer Appliances and White Goods, Portable Medical Monitors, Low-Power Wireless Modules (HID/COM Class).
USB HID Devices (Keyboard, Mouse, Gamepad)
The PIC32MM0256GPM048-I/M4 is purpose-built for USB human-interface devices, integrating a USB 2.0 full-speed device PHY that eliminates external transceiver chips and reduces BOM cost. Its 256 KB Flash and 32 KB SRAM comfortably fit USB HID class descriptors, debounce logic, and firmware update payloads for keyboards, mice, and gamepads. The 25 MHz MIPS32 microAptiv core delivers 79 CoreMark, more than sufficient for HID polling rates of up to 1000 Hz. Combined with Sleep and Idle modes that drop to microamp currents, battery-powered wireless HID peripherals can achieve multi-year battery life while running USB polling. Design tip: route the D+/D- lines as a 90 ohm differential pair and place the 48 MHz USB clock crystal within 5 mm of the CLKIN pin.
Recomendado
IoT Sensor Nodes (Battery-Powered)
Battery-powered IoT sensor nodes benefit from the PIC32MM0256GPM048-I/M4's microamp-range Deep Sleep current, integrated 12-bit ADC, and 32 kHz low-power oscillator for RTC-based wake. The 256 KB Flash holds protocol stacks such as LoRaWAN, Thread, or BLE HCI firmware, while 32 KB SRAM buffers sensor samples and radio transactions. The 38 GPIO pins support multiple sensors, LEDs, and I2C/SPI peripherals without a port expander. Compared with discrete ADC + sleep timer designs, the integrated peripherals shrink the BOM and PCB size, enabling coin-cell powered multi-year deployments. Design tip: enable only the peripherals required for each wake cycle and use the DMA controller to offload sensor sampling without waking the CPU.
Recomendado
Industrial Sensor Interfaces
The PIC32MM0256GPM048-I/M4's 12-bit 200 ksps ADC with up to 28 input channels handles multi-signal industrial sensor aggregation such as temperature, pressure, and 4-20 mA loop monitoring. Hardware ECC on Flash detects and corrects single-bit errors in noisy industrial environments, improving MTBF and reducing field failures. The 2.0 V to 3.6 V supply range and -40C to +85C industrial operating temperature make it rugged enough for factory floor deployment. The 21 timers and 4-channel DMA efficiently manage multi-rate sensor sampling without CPU intervention, freeing the core for protocol handling and diagnostics.
Recomendado
Consumer Appliances and White Goods
Consumer white goods such as dishwashers, washing machines, and coffee makers benefit from the PIC32MM0256GPM048-I/M4's combination of USB connectivity for firmware updates, multiple communication interfaces (I2C, SPI, UART) for display and sensor integration, and abundant Flash for state-machine and touch UI firmware. The 38 GPIO pins directly drive segment LCDs, buttons, relays, and indicator LEDs without external I/O expanders. The low BOM cost of integrated USB plus ECC Flash enables manufacturers to add value-added features without raising bill-of-material cost. Design tip: use the microMIPS instruction mode to reduce firmware footprint by up to 30 percent, leaving more Flash headroom for OTA updates.
Recomendado
Portable Medical Monitors
Portable medical devices such as pulse oximeters, glucose meters, and digital thermometers benefit from the PIC32MM0256GPM048-I/M4's low sleep current, integrated ADC for analog sensor readout, and USB for charging/data transfer. The hardware ECC Flash ensures data-log integrity for clinical records stored locally on the device. The 32 KB SRAM buffers patient measurement streams without external memory, reducing PCB size and BOM cost. With its compact UQFN-48 (6x6 mm) footprint, the device fits inside thin handheld enclosures while leaving room for battery, display, and sensor front-end.
Recomendado
Low-Power Wireless Modules (HID/COM Class)
Wireless modules supporting HID over GATT, CDC over USB, or proprietary 2.4 GHz protocols leverage the PIC32MM0256GPM048-I/M4's low-power sleep modes, USB FS for dongle integration, and 256 KB Flash for protocol stacks. The 32 KB SRAM buffers radio events and handles USB enumeration concurrently. The 21 timers provide the timing precision required for BLE or proprietary TDMA protocols, and the 4-channel DMA offloads radio packet handling from the CPU. Pairing this MCU with an external radio (such as a sub-GHz or 2.4 GHz transceiver) produces a compact, low-power wireless module suitable for HID dongles, remote controls, and asset trackers.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para PIC32MM0256GPM048-I/M4 — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | PIC32MM0256GPM048T-I/M4 | PIC32MM0064GPM048-I/M4 | PIC32MM0128GPM048-I/M4 | PIC32MM0256GPM028-I/M4 |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 48-UQFN (6x6 mm) | 48-UQFN (6x6 mm) | 48-UQFN (6x6 mm) | 48-UQFN (6x6 mm) | 28-pin QFN/SOIC (different footprint) |
| Flash Memory | 256 KB (ECC) | 256 KB (ECC) | 64 KB (ECC) | 128 KB (ECC) | 256 KB (ECC) |
| SRAM | 32 KB | 32 KB | 8 KB | 16 KB | 32 KB |
| CPU Speed | 25 MHz | 25 MHz | 25 MHz | 25 MHz | 25 MHz |
| USB | USB 2.0 FS Device | USB 2.0 FS Device | USB 2.0 FS Device | USB 2.0 FS Device | USB 2.0 FS Device |
| I/O Pins | 38 | 38 | 38 | 38 | 21 |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
Principais diferenciais
- Highest Flash density in the PIC32MM GPM UQFN-48 family (vs PIC32MM0064GPM048-I/M4)
- Same UQFN-48 package footprint as the 0064/0128 variants for cost-down migration (vs PIC32MM0064GPM048-I/M4)
- Maximum I/O count in the PIC32MM GPM line at 48 pins (vs PIC32MM0256GPM028-I/M4)
Notas de projeto
The PIC32MM0256GPM048-I/M4 in UQFN-48 (6x6 mm) dissipates up to approximately 200 mA peak during full CPU+USB activity, which can self-heat at low airflow. Solder the exposed pad (EP) to a continuous ground plane with at least 8 thermal vias (0.3 mm drill, 1.0 mm pitch) to a copper pour on the opposite layer. For battery-powered applications where the part mostly sleeps, thermal management is rarely a concern; for always-active USB applications, allow at least 100 mm^2 of copper area.
For USB 2.0 full-speed compliance, route D+ and D- as a 90 ohm differential pair with matched length within 2 mm. Use 0.5 mm wide differential traces on a 0.2 mm dielectric (FR-4), and avoid splits or routing near noisy signal paths. Place the 48 MHz crystal within 5 mm of the CLKIN/CLKOUT pins, with a grounded guard ring around the crystal traces. Decouple each VDD pin with 0.1 uF and 1 uF ceramics within 3 mm of the pin.
Avoid forgetting to configure the unused I/O pins as analog or output-low to minimize sleep current leakage; floating inputs can draw microamps each and inflate deep sleep current significantly. Do not exceed 3.6 V on any I/O pin, even transiently, or the I/O ESD diodes will inject current into VDD. When using the USB module, ensure the internal pull-up on D+ is enabled before enumeration, or USB 2.0 FS devices will not be detected by the host. Use the low-power 32 kHz internal RC oscillator for RTC rather than an external crystal if crystal pins are reassigned to GPIO.
Informações de conformidade
RoHS and REACH compliant per Microchip product page. Industrial operating temperature range (-40C to +85C). Not AEC-Q100 qualified - choose the PIC32 A-grade or automotive-qualified PIC32MX variants for automotive applications.
