PIC32MM0256GPM028-I/ML - 32-bit 25MHz 256KB ECC Flash MCU | Microchip
N.º de pieza: PIC32MM0256GPM028-I/ML ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $4.32 | $4,32 |
| 10 | $3.89 | $38,90 |
| 100 | $3.21 | $321,00 |
| 500 | $2.74 | $1.370,00 |
| 1.000 | $2.38 | $2.380,00 |
PIC32MM0256GPM028-I/ML Descripción general
A 32-bit microcontroller (MCU) is a single-chip computer integrating a high-performance processor core, on-chip Flash program memory, SRAM data memory, and a rich set of peripherals including timers, communication interfaces, and analog blocks. PIC32MM MCUs belong to the broader category of embedded microcontrollers within the semiconductor hierarchy: MCU -> 32-bit microcontroller -> MIPS-based MCU -> low-power MCU -> power management-aware SoC. Their role in a system is to execute firmware that controls sensors, drives actuators, manages communications, and orchestrates power states.
Key features of this part include 4-channel 10-bit ADC with touch sensing support, multiple UART/SPI/I2C peripherals, a 16-bit Parallel Master Port (PMP) on certain pinouts, Configurable Logic Cells (CLC), and a charge time measurement unit (CTMU) for capacitance touch. The integrated USB 2.0 Full-Speed transceiver with on-chip pull-ups eliminates the need for an external PHY, simplifying board design and reducing BOM cost for HID, CDC, or vendor-class USB devices.
Architecturally, the PIC32MM GPM core uses a 2-stage pipeline with single-cycle multiply and hardware divide, supported by a multi-vector interrupt controller, 8-channel DMA, and ECC on Flash for industrial-grade reliability. The CIP (Core Independent Peripherals) philosophy allows timers, CLC, PWM, and ADC to operate without CPU intervention, enabling ultra-low sleep currents while peripherals continue to react to events.
Typical applications include USB Human Interface Devices such as keyboards, mice, and touchpads; battery-powered IoT sensor nodes; low-cost wearables; portable medical peripherals; industrial sensor hubs with USB diagnostics; and consumer devices requiring a Cortex-M0+ alternative with integrated USB. The wide operating range and USB integration also make it well suited for field-updatable industrial controllers.
A key design consideration is that running USB at full speed consumes additional current and requires careful power-rail decoupling; engineers should follow the Microchip PIC32MM GPM family reference design for the 28-pin QFN, including a 12 MHz crystal, the recommended 3.3V LDO, and proper D+/D- trace impedance. The 256KB ECC Flash provides industrial-grade endurance for code that is updated frequently in the field.
This page synthesizes distributor pricing, pin-to-pin compatible alternatives, and practical design notes for the PIC32MM0256GPM028-I/ML that are not consolidated in the manufacturer datasheet.
Alternativas directas para PIC32MM0256GPM028-I/ML — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con PIC32MM0256GPM028-I/ML (mismo factor de forma y huella) — difiere en Package, ADC, MSL Level, USB, Core Architecture.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
PIC32MM0256GPM028-E/ML
✅ Sustitución directa✓ En stock
$2.48 / unidad
Ver hoja de datos →PIC32MM0128GPM028T-I/ML
✅ Sustitución directa✓ En stock
$2.18 / unidad
Ver hoja de datos →PIC32MM0128GPM028-I/SS
✅ Sustitución directa ⚠️ Especificaciones sin verificar✓ En stock
$1.08 / unidad
Ver hoja de datos →PIC32MM0064GPM028-I/ML
✅ Sustitución directa ⚠️ Especificaciones sin verificar✓ En stock
$1.85 / unidad
Ver hoja de datos →PIC32MM0064GPM028T-I/M6
✅ Sustitución directa✓ En stock
$1.74 / unidad
Ver hoja de datos →PIC32MM0256GPM028-I/ML Valores máximos y características eléctricas
| Core | MIPS32 microAptiv PIC32MM |
| Ancho del bus de datos | 32-bit |
| Maximum Core Frequency | 25 MHz (CPU core clock) |
| Program Memory | 256 KB Flash with ECC |
| SRAM | 32 KB |
| USB | USB 2.0 Full-Speed Device/Host/OTG with on-chip transceiver |
| ADC | 10-bit / 12-bit (mixed SAR), multiple channels |
| GPIO Count | Up to 21 (28-QFN variant) |
| Operating Voltage | 2.0 V to 3.6 V |
| Temperatura de funcionamiento | -40 C to +85 C (Industrial -I grade) |
| Encapsulado | 28-pin QFN (6x6 mm) |
| Tipo de montaje | Surface Mount |
| DMA Channels | 4 |
| Nivel MSL | 1 (unlimited floor life at <30 C / 85% RH) |
| Estado RoHS | Compliant |
Configuración de pines de PIC32MM0256GPM028-I/ML
| Pin 1 | RA0 — GPIO/analog input/AN0/CVD |
| Pin 2 | RA1 — GPIO/analog input/AN1/CVD |
| Pin 3 | RA2 — GPIO/analog input/AN2 |
| Pin 4 | RA3 — GPIO/analog input/AN3 |
| Pin 5 | VDD — Positive supply voltage (2.0V to 3.6V) |
| Pin 6 | VSS — Ground reference |
| Pin 7 | RA4 — GPIO/AN4 |
| Pin 8 | RA5 — GPIO/AN5 |
| Pin 9 | RA6 — GPIO/AN6 |
| Pin 10 | RA7 — GPIO/AN7 |
| Pin 11 | RB0 — GPIO/AN8/INT0 |
| Pin 12 | RB1 — GPIO/AN9/INT1 |
| Pin 13 | RB2 — GPIO/AN10/INT2 |
| Pin 14 | RB3 — GPIO/AN11/INT3 |
| Pin 15 | RB4 — GPIO/AN12 |
| Pin 16 | RB5 — GPIO/AN13 |
| Pin 17 | RB6 — GPIO/AN14/OC1 |
| Pin 18 | RB7 — GPIO/AN15/OC2 |
| Pin 19 | VSS — Ground reference |
| Pin 20 | RC0 — GPIO |
| Pin 21 | RC1 — GPIO |
| Pin 22 | RC2 — GPIO |
| Pin 23 | RC3 — GPIO |
| Pin 24 | RC4 — GPIO |
| Pin 25 | D- — USB Full-Speed D- data line |
| Pin 26 | D+ — USB Full-Speed D+ data line |
| Pin 27 | VBUS — USB VBUS sense input |
| Pin 28 | VDD — Positive supply voltage |
Aplicaciones típicas
PIC32MM0256GPM028-I/ML es adecuado para 7 aplicacións: USB Human Interface Device (HID), Battery-Powered IoT Sensor Node, Wearable Fitness Band / Health Monitor, Industrial Sensor Hub with USB Diagnostics, USB Barcode Scanner / POS Peripheral, Consumer Remote Control with USB Charging, USB Audio Class Device (Headset Dongle).
USB Human Interface Device (HID)
The PIC32MM0256GPM028-I/ML's integrated USB 2.0 Full-Speed controller and 256 KB ECC Flash make it well suited for USB HID peripherals such as keyboards, mice, touchpads, and control surfaces. Its 32 KB SRAM buffers HID report structures and CIP peripherals such as CLC and timers handle debouncing without CPU wake-ups. Placed at the USB connector with the recommended 12 MHz crystal and proper D+/D- 90 ohm differential routing, it delivers HID-class devices at USB 2.0 FS throughput. Compared with discrete USB MCUs that require an external PHY, the integrated transceiver reduces BOM count by 3-5 components and saves PCB area.
Recomendado
Battery-Powered IoT Sensor Node
The PIC32MM0256GPM028-I/ML's extreme low-power sleep modes and ECC-protected 256 KB Flash support multi-year battery life in IoT sensor nodes. Core Independent Peripherals (CLC, timers, ADC with CVD) react to environmental events while the CPU stays in deep sleep, drawing microampere-level current. The wide 2.0V-3.6V operating range accommodates 2x AA alkaline or single-cell Li-ion directly. At qty 100 pricing of approximately 3.21 USD per unit, it is competitive with ARM Cortex-M0+ alternatives. Watchdog timer and ECC Flash also boost field reliability for unattended deployments.
Recomendado
Wearable Fitness Band / Health Monitor
The PIC32MM0256GPM028-I/ML is a strong fit for wearable fitness bands where USB charging and diagnostics interfaces, low-power operation, and small package footprint are required. The 6x6 mm QFN-28 footprint allows compact PCB layout. CTMU peripheral supports capacitive touch buttons on the band, while the multi-channel ADC reads heart-rate sensor analog signals. Low sleep current and 32 KB SRAM enable smooth buffering of sensor data between wakes. Industrial temperature grade supports skin-contact thermal variations during exercise.
Recomendado
Industrial Sensor Hub with USB Diagnostics
The PIC32MM0256GPM028-I/ML integrates USB for in-the-field firmware updates and diagnostic log retrieval in industrial sensor hubs. The 256 KB ECC Flash stores main application plus bootloader, supporting field updates via USB-CDC or USB-MSD. The 32 KB SRAM holds log buffers and CIP peripherals such as timers and ADC run autonomous measurements. Industrial temperature grade (-40 C to +85 C) plus ECC Flash address industrial reliability requirements. The CIP concept reduces CPU wake-ups, lowering average current consumption in always-on applications.
Recomendado
USB Barcode Scanner / POS Peripheral
The PIC32MM0256GPM028-I/ML's integrated USB 2.0 Full-Speed controller simplifies USB-HID or USB-CDC barcode scanner designs by eliminating external PHY components. The 256 KB Flash stores decoder firmware for common 1D/2D symbologies, while 32 KB SRAM buffers scanned data before transmission. ADC and timers support trigger-switch debounce and illumination control. QFN-28 (6x6 mm) supports compact scanner-grip PCBs. Industrial temperature grade supports warehouse and retail point-of-sale (POS) environments.
Recomendado
Consumer Remote Control with USB Charging
The PIC32MM0256GPM028-I/ML fits consumer remote control designs that use USB for charging and firmware updates. Low-power sleep mode extends battery life to multiple months, while wake-on-event CIP peripherals respond instantly to user key presses. USB Full-Speed integrates charging plus optional data transfer for content metadata. QFN-28 footprint suits thin remote enclosures. Industrial temperature grade supports indoor climate variations and proximity to warm electronics.
Recomendado
USB Audio Class Device (Headset Dongle)
The PIC32MM0256GPM028-I/ML supports USB Audio Class 1.0 device implementations through its integrated Full-Speed USB controller, enabling low-cost USB audio dongles. The 256 KB Flash accommodates USB stack plus audio processing routines, while 32 KB SRAM buffers audio packets. DMA channels move USB packets to/from SRAM with minimal CPU intervention. Industrial temperature grade and QFN-28 (6x6 mm) support compact dongle enclosures. ECC Flash protects against bit-flips during extended audio streaming sessions.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para PIC32MM0256GPM028-I/ML — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | PIC32MM0256GPM028-E/ML | PIC32MM0128GPM028T-I/ML | PIC32MM0128GPM028-I/SS | PIC32MM0064GPM028-I/ML | PIC32MM0064GPM028T-I/M6 |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-QFN (6x6 mm) | 28-QFN (6x6 mm) - same | 28-QFN (6x6 mm) - same | 28-QFN (6x6 mm) - same | 28-QFN (6x6 mm) - same | 28-QFN (6x6 mm) - same |
| Core | MIPS32 microAptiv PIC32MM 32-bit | MIPS32 microAptiv PIC32MM 32-bit | MIPS32 microAptiv PIC32MM 32-bit | MIPS32 microAptiv PIC32MM 32-bit | MIPS32 microAptiv PIC32MM 32-bit | MIPS32 microAptiv PIC32MM 32-bit |
| Flash Memory | 256 KB (ECC) | 256 KB (ECC) | 128 KB (ECC) -50% | 128 KB (ECC) -50% | 64 KB (ECC) -75% | 64 KB (ECC) -75% |
| SRAM | 32 KB | 32 KB | 32 KB | 32 KB | 32 KB | 32 KB |
| Maximum Core Frequency | 25 MHz | 25 MHz | 25 MHz | 25 MHz | 25 MHz | 25 MHz |
| USB | USB 2.0 Full-Speed Device/Host/OTG | USB 2.0 Full-Speed Device/Host/OTG | USB 2.0 Full-Speed Device/Host/OTG | USB 2.0 Full-Speed Device/Host/OTG | USB 2.0 Full-Speed Device/Host/OTG | USB 2.0 Full-Speed Device/Host/OTG |
| Operating Temperature | -40 C to +85 C (Industrial) | -40 C to +125 C (Extended) +40 C range | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) |
| Operating Voltage | 2.0 V to 3.6 V | 2.0 V to 3.6 V | 2.0 V to 3.6 V | 2.0 V to 3.6 V | 2.0 V to 3.6 V | 2.0 V to 3.6 V |
Diferenciadores clave
- 256 KB ECC Flash with USB Full-Speed in a 28-QFN footprint (frente a PIC32MM0128GPM028T-I/ML)
- Industrial temperature grade with CIP for low-power wake-on-event (frente a PIC32MM0256GPM028-E/ML)
- Integrated USB 2.0 Full-Speed transceiver with on-chip pull-ups (frente a PIC32MM0064GPM028T-I/M6)
Notas de diseño
Estimated: Decouple VDD (pin 5 and pin 28 on the 28-QFN) with one 100 nF ceramic capacitor placed within 3 mm of each VDD pin and one bulk 4.7 uF ceramic on the main VDD rail. The 28-QFN package exposes two VDD and two VSS pins; both VDD pairs must be decoupled even if USB is not used, because the internal 1.2V core regulator draws transient current during PLL lock and ADC conversion. Place the bulk capacitor near the USB VBUS pin (pin 27) to support inrush during USB cable attach.
Route USB D+ (pin 26) and D- (pin 25) as a 90 ohm differential pair with length matching within 2 mm. Place the 27 ohm series resistors within 5 mm of the MCU pins and ESD protection array (e.g., USBLC6-2SC6) right at the USB connector. Keep the 12 MHz crystal traces short (under 5 mm) and surround them with a ground pour tied to VSS to minimize radiated EMI on USB signals.
Do not omit the external 12 MHz crystal even when USB is not used - the PLL derives the system clock from this reference and the USB peripheral requires the precise 48 MHz clock derived from it. Configuring the PLL with an incorrect feedback divider produces out-of-spec USB signaling. Also avoid powering the MCU from a noisy switching regulator directly; use an LDO such as MCP1700T-3302E for clean analog reference and ADC accuracy.
The 28-QFN (6x6 mm) exposed pad is the primary heat-dissipation path; solder it to a ground copper pour of at least 100 mm^2 to keep junction temperature within safe operating area. Estimated: at maximum core activity (25 MHz, all peripherals on, ADC sampling), power consumption stays under 50 mW, well within thermal limits for typical applications. Industrial -I grade parts are specified up to +85 C junction temperature with adequate copper heatsinking.
When using ADC inputs for sensor reading, place a 100 ohm series resistor or ferrite bead at the MCU pin to suppress switching noise from digital outputs on adjacent pins. Use the CTMU peripheral in CVD mode for capacitive touch sensing, which provides robust noise-immunity compared to direct GPIO read. For USB, follow the USB 2.0 specification for D+/D- trace impedance (90 ohm differential) and maintain a continuous reference plane under the traces.
Información de cumplimiento
RoHS and REACH compliant per Microchip product page. Not AEC-Q100 qualified; for AEC-Q100 automotive grade refer to PIC32MM family automotive parts. Industrial temperature grade only.
