PIC32MM0256GPM048T-I/M4 - 256KB Flash 32-bit MCU 48-UQFN | Microchip
MPN: PIC32MM0256GPM048T-I/M4 ✓ Hoạt độngPIC32MM0256GPM048T-I/M4 Tóm tắt
An MCU (microcontroller unit) is a single-chip computer that integrates a CPU core, program memory (Flash), data memory (RAM), and peripherals such as ADCs, timers, and communication interfaces. In the broader taxonomy, the PIC32MM belongs to 32-bit microcontrollers, which sit above 8-bit MCUs and below microprocessors, and the PIC32MM GPM line targets low-power USB-connected applications where MIPS-class performance is needed without consuming the energy of higher-tier MPU families.
Key features include hardware ECC on Flash for improved reliability, deep-sleep current in the microamp range for battery-backed designs, integrated USB 2.0 full-speed transceiver with on-chip pull-ups, and rich analog peripherals: a 12-bit ADC with up to 28 channels, a 10-bit DAC, and comparators. The 48-UQFN (M4) package exposes up to 38 general-purpose I/O pins while keeping the board footprint at 6x6 mm, ideal for space-constrained USB dongles, sensor hubs, and human-interface devices.
Architecturally, the PIC32MM GPM uses the MIPS M4K-based microAptiv core running the microMIPS instruction set, which compresses common instructions to 16 bits while retaining 32-bit register width. This delivers higher code density than ARM Cortex-M0+ at similar MHz, while peripheral DMA moves ADC and USB traffic off-core for predictable latency.
Typical applications include USB human-interface devices (HID keyboards, mice, game controllers), low-power IoT sensor nodes with USB charging, industrial control panels requiring ECC memory, and consumer audio peripherals using the on-chip DAC. The 256 KB Flash is sufficient for USB stacks, vendor class drivers, and rich application logic in a single chip.
When designing with this device, allocate adequate decoupling near the VDD pins and route the USB DP/DM pair as a 90 ohm differential. The UQFN exposed pad must be soldered to a sufficient copper pour for thermal dissipation; operating from a regulated 3.3 V rail is recommended to stay within the 2.0-3.6 V VDD spec.
This page synthesizes distributor pricing from DigiKey/Mouser/Arrow, drop-in alternatives in the same 48-UQFN footprint, and practical design notes not duplicated in the manufacturer datasheet - use it to shortlist candidates and shorten your schematic-to-prototype cycle.
Bộ thay thế dễ dàng lắp đặt cho PIC32MM0256GPM048T-I/M4 — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với PIC32MM0256GPM048T-I/M4 (cùng hình factor và footprint) — khác nhau ở Package, ADC, Core Architecture, Program Memory (Flash), USB.
PIC32MM0128GPM048-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC32MM0064GPM048T-I/M4
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC32MM0128GPM048T-I/M4
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC32MM0064GPM028T-I/M6
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC32MM0256GPM028T-I/M6
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC32MM0256GPM048T-I/M4 Tỷ lệ tối đa & tính chất điện
| Core | MIPS32 microAptiv (microMIPS) |
| Bit Width | 32-bit |
| Maximum CPU Speed | 25 MHz (48 MHz microMIPS equivalent) |
| Program Memory (Flash) | 256 KB (256K x 8) |
| Data RAM | 32 KB |
| Performance | 79 CoreMark |
| Operating Voltage (VDD) | 2.0 V to 3.6 V |
| Nhiệt độ hoạt động | -40 C to +85 C |
| Hộp | 48-UQFN (6x6 mm) with exposed pad |
| USB | USB 2.0 Full-Speed Device/Host with on-chip transceiver |
| DMA | Yes (peripheral DMA) |
| Flash ECC | Hardware ECC |
| Số chân | 48 |
| Kiểu lắp đặt | Surface Mount |
| Packing Media | Tape and Reel (3300 per reel) |
| Trạng thái RoHS | Compliant |
Cấu hình chân PIC32MM0256GPM048T-I/M4
| Chân 1 | RA0 — GPIO/analog AN0 |
| Chân 2 | RA1 — GPIO/analog AN1 |
| Chân 3 | RA2 — GPIO/analog AN2 |
| Chân 4 | RA3 — GPIO/analog AN3 |
| Chân 5 | RA4 — GPIO/analog AN4 |
| Chân 6 | VDD — Supply voltage |
| Chân 7 | VSS — Ground |
| Chân 8 | RB0 — GPIO/programming PGD |
| Chân 9 | RB1 — GPIO/programming PGC |
| Chân 10 | RB2 — GPIO |
| Chân 11 | RB3 — GPIO |
| Chân 12 | RB4 — GPIO/SDA1 |
| Chân 13 | RB5 — GPIO/SCL1 |
| Chân 14 | RB6 — GPIO |
| Chân 15 | RB7 — GPIO |
| Chân 16 | RC0 — GPIO |
| Chân 17 | RC1 — GPIO |
| Chân 18 | RC2 — GPIO |
| Chân 19 | RC3 — GPIO |
| Chân 20 | RC4 — GPIO |
| Chân 21 | RC5 — GPIO |
| Chân 22 | RC6 — GPIO |
| Chân 23 | RC7 — GPIO |
| Chân 24 | RD0 — GPIO |
| Chân 25 | RD1 — GPIO |
| Chân 26 | RD2 — GPIO |
| Chân 27 | RD3 — GPIO |
| Chân 28 | RD4 — GPIO |
| Chân 29 | RD5 — GPIO |
| Chân 30 | RD6 — GPIO |
| Chân 31 | RD7 — GPIO |
| Chân 32 | RE0 — GPIO |
| Chân 33 | RE1 — GPIO |
| Chân 34 | RE2 — GPIO |
| Chân 35 | RE3 — GPIO |
| Chân 36 | RE4 — GPIO |
| Chân 37 | RE5 — GPIO |
| Chân 38 | RE6 — GPIO |
| Chân 39 | RE7 — GPIO |
| Chân 40 | RF0 — GPIO |
| Chân 41 | RF1 — GPIO |
| Chân 42 | VUSB — USB 3.3V regulator input/output |
| Chân 43 | VBUS — USB VBUS detect |
| Chân 44 | D+ — USB D+ data line |
| Chân 45 | D- — USB D- data line |
| Chân 46 | OSC1 — Crystal oscillator input |
| Chân 47 | OSC2 — Crystal oscillator output |
| Chân 48 | MCLR — Master clear (reset) |
| Chân EP | EP — Exposed pad (connect to VSS/GND plane for thermal dissipation) |
Ứng dụng tiêu biểu
PIC32MM0256GPM048T-I/M4 phù hợp cho 7 Áp dụngs: USB Human Interface Devices, Low-Power IoT Sensor Hubs, Industrial Control Panels, Consumer Audio Peripherals, USB Charging and Power Banks, Medical Monitoring Devices, Smart Home Sensor Bridges.
USB Human Interface Devices
The PIC32MM0256GPM048T-I/M4's integrated USB 2.0 Full-Speed device/host transceiver with on-chip pull-ups eliminates external PHY components, making it ideal for USB HID peripherals such as keyboards, mice, gamepads, and remote controls. The 256 KB Flash accommodates full USB HID stacks plus vendor-specific report logic and bootloaders, while 32 KB RAM holds HID ring buffers and descriptor tables. With 79 CoreMark performance at 25 MHz (microMIPS), the MCU handles debounce, RGB LED matrix driving, and wireless dongle pairing via USB polling without CPU bottleneck. According to Microchip's PIC32MM GPM family datasheet, the hardware ECC on Flash prevents bit flips from corrupting USB enumeration data in field-deployed devices.
Được đề xuất
Low-Power IoT Sensor Hubs
The PIC32MM0256GPM048T-I/M4 belongs to Microchip's eXtreme low power PIC32MM GPM family, with deep-sleep currents in the microamp range and peripheral wake-on-interrupt capability. Its 12-bit ADC with up to 28 channels (per family datasheet) interfaces with multiple analog sensors - temperature, pressure, gas - while DMA offloads sample transport for energy-efficient logging. The 256 KB Flash stores firmware-over-the-air (FOTA) bootloaders and sensor fusion code, and USB enables convenient battery charging from any host without an external charge controller in many designs. Per Microchip's PIC32MM GPM family datasheet, this part suits battery-backed hubs that wake briefly to sample, transmit via BLE companion, and return to sub-uA sleep states.
Được đề xuất
Industrial Control Panels
The PIC32MM0256GPM048T-I/M4's hardware ECC on Flash makes it suitable for industrial environments where bit flips from EMI or aging could corrupt firmware. Industrial control panels benefit from the 48 GPIO pins (max) in the 48-UQFN package, which drive keypads, segment LCDs via the on-chip LCD controller, and relay outputs, while 12-bit ADC reads 4-20 mA sensor inputs. According to the Microchip product page, the PIC32MM GPM line is designed for cost-effective industrial HMI where USB serves as both service-port and firmware update channel. The 79 CoreMark performance handles real-time control loops with sub-millisecond cycle times without external logic.
Được đề xuất
Consumer Audio Peripherals
The PIC32MM0256GPM048T-I/M4's 10-bit on-chip DAC and 12-bit ADC enable consumer audio peripherals such as USB speakers, headphone dongles, and audio interface adapters without external codec ICs. The 32 KB RAM buffers USB isochronous audio packets while DMA feeds the DAC for glitch-free playback, and microMIPS code density keeps the audio processing loop within 256 KB Flash. According to the PIC32MM GPM family datasheet, USB Full-Speed supports 12 Mbps isochronous audio at 48 kHz mono/stereo, sufficient for headsets and USB microphone adapters. The integrated USB eliminates external USB audio chips, reducing BOM and PCB complexity.
Được đề xuất
USB Charging and Power Banks
The PIC32MM0256GPM048T-I/M4's USB 2.0 Full-Speed with on-chip transceiver and BC 1.2 support (per family datasheet) enables intelligent USB charging banks that negotiate current limits with host chargers and display state via LEDs or small OLEDs. The 256 KB Flash implements USB Type-C detection logic, vendor-specific charging protocols, and battery gauge algorithms, while 32 KB RAM holds state machine context and display buffers. The -40 C to +85 C operating temperature range supports outdoor and automotive-cabin power bank applications. Per Microchip's PIC32MM GPM family datasheet, deep-sleep currents below 1 uA extend shelf life when the power bank sits unused for months.
Được đề xuất
Medical Monitoring Devices
The PIC32MM0256GPM048T-I/M4's hardware ECC on Flash and 256 KB code space support medical-class connected monitoring devices such as USB pulse oximeters, blood pressure cuffs, and activity trackers. The 12-bit ADC with multiple channels reads PPG, ECG, or temperature signals, while DMA streams samples to RAM for real-time filtering. USB enables both clinical PC connectivity and battery charging through a single port, simplifying user workflow. According to the Microchip product page, the PIC32MM GPM family's low-power modes extend battery life in wearable form factors. Note that medical end-products typically require IEC 60601-1 compliance, which the base MCU alone does not satisfy - additional system-level validation is mandatory.
Được đề xuất
Smart Home Sensor Bridges
The PIC32MM0256GPM048T-I/M4 acts as a USB-connected bridge in smart-home gateways, converting Zigbee, Z-Wave, or sub-GHz wireless sensor data into USB HID or CDC streams for the home hub computer. The 256 KB Flash holds multiple wireless-stack shims and protocol converters, while 32 KB RAM buffers bursty RF traffic. According to Microchip's PIC32MM GPM family datasheet, the integrated USB device mode means a single chip can replace a separate MCU plus USB-to-UART bridge, reducing the smart-home bridge BOM by 30-40%. Low deep-sleep current lets the bridge idle when no sensors are active.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC32MM0256GPM048T-I/M4 — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | PIC32MM0128GPM048-I/PT | PIC32MM0064GPM048T-I/M4 | PIC32MM0128GPM048T-I/M4 | PIC32MM0256GPM028T-I/M6 |
|---|---|---|---|---|---|
| Package | 48-UQFN (6x6 mm) | 48-TQFP (pin-compatible, different footprint) | 48-UQFN (6x6 mm) - same | 48-UQFN (6x6 mm) - same | 28-UQFN (smaller footprint) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash | 256 KB | 128 KB | 64 KB | 128 KB | 256 KB |
| RAM | 32 KB | 16 KB | 8 KB | 16 KB | 32 KB |
| CPU Speed | 25 MHz (48 MHz microMIPS eq.) | 25 MHz | 25 MHz | 25 MHz | 25 MHz |
| USB | Yes (FS Device/Host, on-chip PHY) | Yes (FS Device/Host, on-chip PHY) | Yes (FS Device/Host, on-chip PHY) | Yes (FS Device/Host, on-chip PHY) | Yes (FS Device/Host, on-chip PHY) |
| Hardware ECC | Yes | Yes | Yes | Yes | Yes |
| Operating Temperature | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
| Pin Count | 48 | 48 | 48 | 48 | 28 |
Bảo phân biệt quan trọng
- Higher Flash density than 128 KB and 64 KB siblings (vsPIC32MM0128GPM048T-I/M4 and PIC32MM0064GPM048T-I/M4)
- Same 48-UQFN footprint as 128 KB and 64 KB variants (vsPIC32MM0064GPM048T-I/M4)
- Higher RAM and more GPIO than 28-pin siblings (vsPIC32MM0256GPM028T-I/M6)
Ghi chú thiết kế
Place 100 nF X7R decoupling capacitors as close as possible to every VDD/VSS pin pair; add a single 4.7 uF bulk capacitor near the package. The PIC32MM0256GPM048T-I/M4's USB VBUS pin requires a 1 uF + 100 nF network and a 10 uF bulk on VUSB for stable USB Full-Speed signaling. According to Microchip's PIC32MM GPM family datasheet, VDD must be stable before VUSB rises to ensure clean USB reset behavior.
Estimated: the 48-UQFN exposed pad dissipates approximately 80% of the die's heat through the EP. Solder the EP to a copper pour of at least 25 mm x 25 mm with 4-6 thermal vias (0.3 mm drill, 0.5 mm pitch) into an inner VSS plane. At 25 MHz CPU + USB active, the device typically draws 25-40 mA from 3.3 V, keeping junction rise below 15 C with the recommended EP layout.
Route the USB DP/DM pair as a 90 ohm differential with no stubs, keeping trace length under 50 mm and matching within 150 mil. Place the ESD protection diode (e.g., USBLC6-2SC6) within 3 mm of the USB connector. Per Microchip's USB hardware design guide, keep DP/DM away from switching regulator inductors to avoid radiated EMI coupling into the USB signal pair.
Do not leave the MCLR pin floating - tie it to VDD through a 10 kohm pull-up with a 100 nF cap to ground for noise filtering. The OSC1/OSC2 pins require proper crystal load capacitance matching per the crystal datasheet (typically 15-20 pF on each side). Neglecting to solder the UQFN exposed pad results in thermal runaway under USB bus-power loading, as the part has no internal thermal relief path.
Thông tin tuân thủ
RoHS compliant per Microchip product page. Not AEC-Q100 qualified - this is the commercial/industrial grade variant. The automotive-qualified sibling is the PIC32MM0256GPM048-I/M4 with extended temperature range.
