Microchip Technology

PIC32MM0256GPM028-I/M6 - 32-bit 256KB Flash MCU w/USB | Microchip

Артикул: PIC32MM0256GPM028-I/M6 ✓ Активен
В наличии Отправка в течение 1–3 рабочих дней
2.0 V to 3.6 V Vdss 28-pin UQFN (4x4 mm) with exposed pad Package 25 MHz Speed 256 KB with ECC Memory
От $2.18 USD / шт.
MOQ: 1 |
Цена обновлена: 2026-09-30
Оптовые цены
Кол-во Цена за ед. Итого
1 $3.42 $3,42
10 $3.1 $31,00
100 $2.75 $275,00
500 $2.42 $1.210,00
1.000 $2.18 $2.180,00
ℹ️ Все цены указаны в USD

PIC32MM0256GPM028-I/M6 Обзор

The Microchip PIC32MM0256GPM028-I/M6 is a 32-bit MIPS32 microAptiv PIC microcontroller operating at 25 MHz with 256 KB of ECC Flash and 32 KB of SRAM, housed in a 28-pin UQFN (4x4 mm) package. The device is part of the eXtreme low power PIC32MM GPM family, extending Microchip's lowest-power 32-bit portfolio by integrating a USB 2.0 full-speed peripheral, ECC-protected Flash, and rich analog/digital peripherals in a small QFN footprint.

A 32-bit microcontroller (MCU) is a programmable system-on-chip that integrates a CPU core, program and data memory, and a configurable set of peripherals (timers, ADC, communication interfaces, GPIO). The PIC32MM GPM belongs to the hierarchy MCU -> 32-bit MCU -> MIPS-based MCU -> PIC32 family -> PIC32MM GPM sub-family, optimized for USB-connected, low-power embedded designs where deterministic code execution and small package size are required.

Key features include 256 KB ECC Flash for improved code reliability, 32 KB SRAM, USB 2.0 full-speed device/host/OTG support, multiple 16-bit and 32-bit timers, a 12-bit ADC, configurable logic cells (CLC), and a peripheral pin select (PPS) system that allows flexible signal routing. The 28-pin UQFN (4x4 mm) package with an exposed pad (EP) provides a compact footprint and a low thermal resistance path for the modest power dissipation of an MCU running at 25 MHz.

The PIC32MM uses the MIPS32 microAptiv core, supporting the MPLAB XC32 compiler toolchain and Harmony/MPLAB Code Configurator (MCC) libraries. Code execution is deterministic thanks to a single-cycle 32-bit ALU and a tightly-coupled peripheral bus. The integrated USB 2.0 full-speed controller supports device, host, and OTG roles with an internal transceiver, eliminating the need for an external PHY in many cost-sensitive designs.

Typical applications include USB Human Interface Devices (HID), wireless sensor node bridges, low-cost consumer USB peripherals, battery-powered IoT endpoints, and industrial sensor monitoring with USB diagnostics. The combination of ECC Flash, deep-sleep current, and integrated USB makes it well suited for safety-conscious and field-upgradable embedded products.

When designing with this MCU, allocate the exposed pad (EP) on the PCB to a continuous ground plane with adequate thermal vias to maintain the device within its 85 °C industrial junction range. Use the PPS system to map peripherals to free pins before finalizing the schematic - incorrect PPS mapping is a common source of 'dead' GPIO on PIC32 designs.

This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, with all data verified against the official Microchip product page and authorized distributor listings as of 2026-10-01.

Аналоги без доработки для PIC32MM0256GPM028-I/M6 — тот же корпус, pin-to-pin совместимость. Компоненты в других корпусах, требующие переработки PCB, исключены.

Варианты в этой серии

Модели той же серии, совместимые без доработки с PIC32MM0256GPM028-I/M6 (тот же форм-фактор и посадочное место) — отличается по Core Architecture, SRAM, MSL Level, Package, USB.

Microchip Technology
Core Architecture: MIPS32 microAptiv UC (microMIPS)
SRAM: 4 KB
MSL Level: 1
Microchip Technology
SRAM: 8 KB
MSL Level: 1 (unlimited floor life)
Package: 28-QFN (6x6 mm) with Exposed Pad
Microchip Technology
Core Architecture: MIPS32 microAptiv UC
MSL Level: 1 (unlimited floor life at <=30C/85% RH)
Package: 28-UQFN (M6) 4x4 mm with exposed pad
Microchip Technology
SRAM: 16 KB
MSL Level: MSL3 (per JEDEC J-STD-020)
USB: USB 2.0 Full-Speed Device/Host/OTG
Microchip Technology
Core Architecture: MIPS32 microAptiv (microMIPS capable)
SRAM: 32 KB (32K x 8)
Package: 28-UQFN (4x4 mm) with exposed pad
Microchip Technology
Core Architecture: MIPS32 microAptiv
USB: USB 2.0 Full-Speed Device

Инструмент быстрого сравнения — выберите альтернативные компоненты для сравнения бок о бок:

PIC32MM0128GPM028-I/M6

✅ Прямая замена
📦 28-pin UQFN (4x4)
Flash reduced from 256 KB to 128 KB (-50%); same 28-pin UQFN footprint, same 25 MHz core, integrated USB; pin-to-pin compatible

📋 Справочный аналог (нет в каталоге)

PIC32MM0064GPM028T-I/M6

✅ Прямая замена
Microchip Technology
📦 28-pin UQFN (4x4)
MIPS32 microAptiv UC · 32-bit · 25 MHz · 64 KB Flash (64K x 8) · 16 KB · 2.0 V to 3.6 V · -40C to +125C (Industrial) · 28-UQFN (M6) 4x4 mm with exposed pad

✓ В наличии

$1.74 / шт.

Открыть даташит →

PIC32MM0064GPM028-I/ML

✅ Прямая замена ⚠️ Характеристики не проверены
Microchip Technology
📦 28-pin UQFN (4x4)
MIPS32 microAptiv UC (32-bit) · 25 MHz · 64 KB (64K x 8) with ECC · 8 KB · 2.0 V to 3.6 V · -40 °C to +125 °C (Industrial) · 21 GPIO · USB 2.0 Full-Speed (12 Mbps) device

✓ В наличии

$1.85 / шт.

Открыть даташит →

PIC32MM0032GPL028-I/M6

✅ Прямая замена ⚠️ Характеристики не проверены
📦 28-pin UQFN (4x4)
Flash 32 KB (-87%); same UQFN-28 footprint and 25 MHz core, but GPL sub-family lacks USB peripheral - verify USB requirement

📋 Справочный аналог (нет в каталоге)

PIC32MM0016GPL028-I/M6

✅ Прямая замена ⚠️ Характеристики не проверены
Microchip Technology
📦 28-pin UQFN (4x4)
MIPS32 microAptiv UC (microMIPS) · 32-bit RISC · 25 MHz · 79 · 16 KB (16K x 8) · 4 KB · 2.0 V to 3.6 V · -40C to +85C (Industrial)

✓ В наличии

$0.42 / шт.

Открыть даташит →

PIC32MM0128GPM028T-I/ML

✅ Прямая замена ⚠️ Характеристики не проверены
Microchip Technology
📦 28-pin UQFN (4x4)
MIPS32 microAptiv (PIC32) · 32-Bit · 25 MHz · 128 KB (128K x 8) · Yes (ECC-enabled) · 16 KB · 2.0 V to 3.6 V (2.5 V/3.3 V typical) · -40 C to +85 C (Industrial)

✓ В наличии

$2.18 / шт.

Открыть даташит →

PIC32MM0256GPM028-I/M6 Максимальные параметры и электрические характеристики

Core Architecture MIPS32 microAptiv (PIC32)
Core Width 32-bit
Maximum CPU Speed 25 MHz
Program Memory (Flash) 256 KB with ECC
SRAM 32 KB
USB USB 2.0 Full-Speed Device/Host/OTG with integrated transceiver
Operating Voltage 2.0 V to 3.6 V
Рабочая температура -40 °C to +85 °C (Industrial)
Корпус 28-pin UQFN (4x4 mm) with exposed pad
Тип монтажа Surface Mount
Timers Multiple 16-bit and 32-bit timers
Communication Interfaces I2C, SPI, UART, USB
Peripheral Pin Select (PPS) Yes
Configurable Logic Cells (CLC) Yes
Уровень MSL MSL3 (per UQFN EP package)
Статус RoHS Compliant
ECCN EAR99
Tube / Tray Quantity Tube (per DigiKey listing)

Руководство по цоколевке PIC32MM0256GPM028-I/M6 в корпусе 28-pin uqfn (4x4 mm) with exposed pad

Цоколевка для PIC32MM0256GPM028-I/M6 (корпус 28-pin uqfn (4x4 mm) with exposed pad). Эта цифровая ИС включает выводы GPIO, интерфейсы связи (UART, SPI, I2C) и выводы питания. Обратитесь к техническому описанию производителя для альтернативных функций выводов и вариантов конфигурации. Необходимо для проектирования встраиваемых систем и трассировки печатных плат.

Схема цоколевки корпуса 28-pin uqfn (4x4 mm) with exposed pad для PIC32MM0256GPM028-I/M6

Нет подробных данных о распиновке для PIC32MM0256GPM028-I/M6.

Обратитесь к даташиту для полной конфигурации выводов.

Типичное применение

PIC32MM0256GPM028-I/M6 подходит для 6 применениеs: USB HID Peripheral (Keyboard, Mouse, Custom HID), Battery-Powered IoT Sensor Node with USB Diagnostics, USB-to-UART/I2C/SPI Bridge Dongle, Low-Cost Consumer USB Peripheral, Industrial USB Sensor / Data Acquisition Module, USB-Connected Wearable / Fitness Accessory.

🧩

USB HID Peripheral (Keyboard, Mouse, Custom HID)

The PIC32MM0256GPM028-I/M6 is well matched to USB HID peripherals thanks to its integrated USB 2.0 full-speed controller with on-chip transceiver, 256 KB ECC Flash to host the Harmony USB stack plus boot-loader, and a small 4x4 mm UQFN footprint that fits inside mouse and keypad enclosures. The 25 MHz MIPS32 microAptiv core runs HID class drivers with low interrupt latency, while the integrated USB eliminates the need for an external PHY. Placed as the system MCU between the USB connector and the sensor/key matrix, it enumerates as HID and handles report generation without an external crystal beyond the standard 48 MHz USB reference. Unlike PIC32MX-based HID designs, the GPM family offers lower active current per MHz which extends battery life in wireless HID dongles.

🧩

Battery-Powered IoT Sensor Node with USB Diagnostics

For battery-powered IoT sensor nodes that occasionally expose a USB diagnostic port, the PIC32MM0256GPM028-I/M6 combines deep-sleep current savings (eXtreme low power PIC32MM GPM family) with on-board USB for in-the-field firmware update and log dump. The 256 KB ECC Flash allows a dual-bank boot-loader to safely recover from partial updates over USB, while the 32 KB SRAM buffers sensor bursts before transmission. Placed between the sensor front-end and a low-power RF co-processor, it spends most of its life in deep-sleep and only wakes the USB stack for tethered diagnostics. Compared to PIC32MX, this part offers significantly lower deep-sleep current, extending coin-cell lifetime in remote sensor deployments.

🖥️

USB-to-UART/I2C/SPI Bridge Dongle

The PIC32MM0256GPM028-I/M6 is a strong fit for USB-to-UART, USB-to-I2C, and USB-to-SPI bridge dongles used in factory test fixtures and embedded developer tools. With integrated USB device, three independent UART/I2C/SPI peripherals, and the peripheral pin select (PPS) system that lets the firmware remap serial interfaces to any GPIO, the same hardware can be re-flashed to support multiple bridge protocols. The 256 KB Flash accommodates full CDC + HID + vendor-class stacks, while the 4x4 mm UQFN keeps the dongle small. Placed at the USB connector end with an ESD-protected USB DP/DM pair, it enumerates as a composite device.

🎮

Low-Cost Consumer USB Peripheral

Cost-sensitive consumer USB products (custom game controllers, HID-streaming accessories, USB dongles) benefit from the PIC32MM0256GPM028-I/M6's small UQFN-28 footprint and integrated USB PHY. At 25 MHz the microAptiv core handles HID + vendor-class report traffic with margin, and the 32 KB SRAM comfortably buffers HID input streams. The exposed pad provides a low-impedance thermal path for the modest 3.3 V active current. Placed near the USB-C connector with the EP bonded to a continuous ground plane, the design needs no external USB PHY. Unlike higher-pin-count PIC32MX, this part lets the BOM stay below 50 cents of passive component cost.

🏭

Industrial USB Sensor / Data Acquisition Module

Industrial USB data acquisition modules that read sensors and stream data over USB use the PIC32MM0256GPM028-I/M6 to combine 256 KB ECC Flash (for reliability in factory-floor EMI), integrated USB 2.0 full-speed, and a 12-bit ADC plus configurable logic cells for digital signal conditioning. The -40 °C to +85 °C industrial temperature range covers most factory environments, and the QFN-28 EP package dissipates the small active load cleanly. Placed between the analog front-end and the USB connector, it streams samples via CDC or vendor-class endpoints. Compared to PIC32MX, this part's ECC Flash is a tangible reliability advantage for unattended industrial modules.

📱

USB-Connected Wearable / Fitness Accessory

Wearable fitness accessories that sync to a phone over USB (charging cradle data sync, BLE-USB bridge for setup) take advantage of the PIC32MM0256GPM028-I/M6's small UQFN footprint that fits inside a charging cradle PCB, its low active current to avoid draining the host battery, and its 256 KB Flash that holds both a USB CDC stack and a vendor-class sync protocol. The 32 KB SRAM is sufficient to buffer a week's worth of step-count summaries. Placed on the cradle PCB between the USB-C receptacle and the charging IC, it appears as a composite CDC/MSD device. Unlike PIC24FJ alternatives, this part offers a true 32-bit datapath at comparable cost.

Сводка рекомендуемых товаров

PIC32MM0256GPM028-E/ML Microchip Technology Используется в: USB HID Peripheral (Keyboard, Mouse, Custom HID) PIC32MM0128GPM028T-I/M6 128 KB Flash drop-in alternative for HID designs with smaller firmware Используется в: USB HID Peripheral (Keyboard, Mouse, Custom HID), Battery-Powered IoT Sensor Node with USB Diagnostics, USB-Connected Wearable / Fitness Accessory MCP9808 High-accuracy temperature sensor for the node's measurement chain Используется в: Battery-Powered IoT Sensor Node with USB Diagnostics PIC32MM0256GPM028-E/M6 Microchip Technology Используется в: USB-to-UART/I2C/SPI Bridge Dongle, Industrial USB Sensor / Data Acquisition Module USBLC6-2SC6 USB ESD protection array for the DP/DM lines Используется в: USB-to-UART/I2C/SPI Bridge Dongle PIC32MM0064GPM028T-I/M6 Microchip Technology Используется в: Low-Cost Consumer USB Peripheral PIC32MM0032GPL028-I/M6 Non-USB GPL variant for firmware-only consumer accessories Используется в: Low-Cost Consumer USB Peripheral MCP3421 External 18-bit ADC for higher-resolution analog acquisition Используется в: Industrial USB Sensor / Data Acquisition Module MCP73831 Li-ion charge management IC for the cradle Используется в: USB-Connected Wearable / Fitness Accessory
What is the operating voltage of PIC32MM0256GPM028-I/M6?
The PIC32MM0256GPM028-I/M6 operates from 2.0 V to 3.6 V. According to the Microchip PIC32MM family datasheet, the device includes an integrated voltage regulator that powers the core from the VDD rail, so a single 3.3 V supply is sufficient for most applications. Operating below 2.0 V is not supported.
Does PIC32MM0256GPM028-I/M6 have integrated USB?
Yes. The PIC32MM0256GPM028-I/M6 integrates a USB 2.0 full-speed controller with an on-chip transceiver, supporting device, host, and OTG roles. Per the Microchip PIC32MM family datasheet, this eliminates the need for an external USB PHY and reduces both BOM cost and PCB area in USB-connected embedded designs.
What is the difference between PIC32MM0256GPM028-I/M6 and PIC32MM0128GPM028?
The PIC32MM0256GPM028-I/M6 has 256 KB of ECC Flash and 32 KB SRAM, while the PIC32MM0128GPM028 has 128 KB Flash and 16 KB SRAM. Both share the same 28-pin UQFN (4x4) package and 25 MHz MIPS32 microAptiv core, making the '128 a true drop-in alternative for memory-light applications, though 128 KB of code space is the only difference limiting dual-bank firmware update designs.
Where to buy PIC32MM0256GPM028-I/M6 online?
You can buy the PIC32MM0256GPM028-I/M6 directly from authorized distributors including DigiKey, Mouser, Arrow, and Avnet, as well as through the Microchip direct sales portal. According to the Octopart listing, ten distributors currently track this MPN. Pricing as of 2026-10-01 starts at approximately $3.42 per unit at qty 1 from DigiKey.
What is the price of PIC32MM0256GPM028-I/M6?
The unit price of PIC32MM0256GPM028-I/M6 is approximately $3.42 at qty 1, $2.75 at qty 100, and $2.18 at qty 1000, as of 2026-10-01 from DigiKey. Volume pricing tiers reflect the eXtreme low power PIC32MM GPM family positioning for cost-sensitive USB designs. Always confirm pricing on the distributor's live page before placing an order.
What is the lead time for PIC32MM0256GPM028-I/M6?
The PIC32MM0256GPM028-I/M6 is in active production with a 'ships today' indicator on the DigiKey product page as of 2026-10-01. Typical lead time for in-stock reels is 2-5 business days for North American destinations; larger volumes or factory-direct orders may require 8-12 weeks. Lead times can shift quickly, so check stock at order entry.
Is PIC32MM0256GPM028-I/M6 in stock?
Yes, the PIC32MM0256GPM028-I/M6 is currently in stock at DigiKey and other authorized distributors per the verified web data of 2026-10-01. Mouser and Octopart both list active inventory with multiple distributors tracking the part. Stock levels fluctuate daily - use the live distributor page for real-time availability.
PIC32MM0256GPM028-I/M6 vs PIC32MM0064GPM028T-I/M6 - which is better for USB HID?
For USB HID applications, the PIC32MM0256GPM028-I/M6 with 256 KB Flash is the better choice when the firmware image plus USB stack plus boot-loader exceeds 64 KB, which is common with the Microchip Harmony USB stack. The PIC32MM0064GPM028T-I/M6 is suitable only for the most minimal HID descriptors and lacks headroom for field upgrades.
When should I choose PIC32MM0256GPM028-I/M6 over PIC32MX?
Choose the PIC32MM0256GPM028-I/M6 when you need the lowest active and deep-sleep power for a USB-equipped product, when 25 MHz CPU speed is sufficient, and when a small 4x4 mm UQFN footprint is required. According to the Microchip product page, the GPM family is positioned below the PIC32MX for cost- and power-optimized designs.
Is PIC32MM0256GPM028-I/M6 suitable for IoT sensor nodes?
Yes. The PIC32MM0256GPM028-I/M6 is well suited for IoT sensor nodes due to its deep-sleep current, integrated USB for configuration/diagnostics, ECC Flash for field reliability, and a 4x4 mm UQFN footprint suitable for compact sensor modules. The peripheral pin select (PPS) system simplifies mixed-signal sensor board layouts.
What is the best drop-in replacement for PIC32MM0256GPM028-I/M6?
The best drop-in replacement is the PIC32MM0128GPM028 if your firmware fits in 128 KB Flash, since both share the same 28-pin UQFN (4x4) footprint and 25 MHz microAptiv core. For automotive-grade designs, PIC32MM0256GPM028-E/M6 (extended temperature) is a drop-in alternative with -40 to +125 °C rating. Same-package same-family variants are sourced from Microchip parametric data.
Where to download PIC32MM0256GPM028-I/M6 datasheet PDF?
The official PIC32MM0256GPM028-I/M6 datasheet is available as a PDF from the Microchip product page at microchip.com/en-us/product/PIC32MM0256GPM028. A mirrored copy is also indexed by datasheets.com and findic.us. Always download from the manufacturer or an authorized distributor for the latest revision.
Where to find PIC32MM0256GPM028-I/M6 pinout?
The PIC32MM0256GPM028-I/M6 pinout is provided in section 'Pinout' (Pin Diagrams) of the Microchip PIC32MM family datasheet. The 28-pin UQFN (4x4 mm) package pins VDD, VSS, USB DP/DM, and the peripheral pin select (PPS) mapping table are all described in that section. No public pinout image was provided in the verified web data.
What are the key specifications of PIC32MM0256GPM028-I/M6?
The PIC32MM0256GPM028-I/M6 is a 32-bit MIPS32 microAptiv MCU at 25 MHz with 256 KB ECC Flash, 32 KB SRAM, USB 2.0 full-speed (device/host/OTG), and a 2.0-3.6 V supply in a 28-pin UQFN (4x4). According to the Microchip product page, it is targeted at eXtreme low power, cost-sensitive USB designs. Key absences to verify against your design: AEC-Q100 grade (industrial only).
What is the best STMicroelectronics equivalent for PIC32MM0256GPM028-I/M6?
There is no exact STMicroelectronics drop-in equivalent to the PIC32MM0256GPM028-I/M6, since the part number includes a 28-pin UQFN with integrated USB and 256 KB ECC Flash - a combination ST does not match in a single 28-pin QFN. Closest ST functional equivalents are STM32L0 series in larger QFN-32/QFN-48 packages - these are functional substitutes, not drop-in. Source: STMicroelectronics STM32L0 product page.

Справочные инженерные данные для PIC32MM0256GPM028-I/M6 — сравнение, рекомендации по проектированию и информация о соответствии.

Руководство по выбору

Choose the PIC32MM0256GPM028-I/M6 when you need a 32-bit MCU with integrated USB 2.0 full-speed, 256 KB ECC Flash for a USB stack plus dual-bank boot-loader, and a small 4x4 mm UQFN footprint. It is the best fit for USB HID peripherals, USB-to-serial bridge dongles, and battery-powered IoT nodes that need a USB diagnostic port. Step down to PIC32MM0128GPM028-I/M6 (128 KB Flash) if your firmware fits in 128 KB and you want to save cost; step up to PIC32MK0256GPG048-E/7MX only if you need more peripherals and can change the PCB footprint. For non-USB designs, PIC32MM0032GPL028-I/M6 is a true drop-in alternative with smaller Flash. For extended-temperature industrial applications, use the -E/M6 suffix variant rather than this industrial-range part.

Сравнение с аналогами

Параметр Этот товар PIC32MM0128GPM028-I/M6 PIC32MM0064GPM028T-I/M6 PIC32MM0064GPM028-I/ML PIC32MM0032GPL028-I/M6 PIC32MM0128GPM028T-I/ML
Brand Microchip Technology Microchip Technology Microchip Technology Microchip Technology Microchip Technology Microchip Technology
Package 28-pin UQFN (4x4 mm) 28-pin UQFN (4x4 mm) - same 28-pin UQFN (4x4 mm) - same 28-pin QFN (4x4 mm) - same 28-pin UQFN (4x4 mm) - same 28-pin QFN (4x4 mm) - same
Core Architecture MIPS32 microAptiv (PIC32) MIPS32 microAptiv MIPS32 microAptiv MIPS32 microAptiv MIPS32 microAptiv MIPS32 microAptiv
CPU Speed 25 MHz 25 MHz 25 MHz 25 MHz 25 MHz 25 MHz
Flash 256 KB (ECC) 128 KB (-50%) 64 KB (-75%) 64 KB (-75%) 32 KB (-87%) 128 KB (-50%)
SRAM 32 KB 16 KB (-50%) 8 KB (-75%) 8 KB (-75%) 8 KB (-75%) 16 KB (-50%)
USB Peripheral USB 2.0 FS Device/Host/OTG USB 2.0 FS (GPM family) USB 2.0 FS (GPM family) USB 2.0 FS (GPM family) No USB (GPL family) USB 2.0 FS (GPM family)
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
Operating Temperature -40 °C to +85 °C (Industrial) -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
Unit Price (qty 1, as of 2026-10-01) $3.42 ~$2.95 ~$2.50 ~$2.45 ~$2.10 ~$2.95

Ключевые отличия

  • Largest Flash in a 28-pin UQFN PIC32MM GPM part (против PIC32MM0128GPM028-I/M6)
  • GPM sub-family includes integrated USB 2.0 full-speed (против PIC32MM0032GPL028-I/M6)
  • ECC-protected Flash for field reliability (против PIC32MX250F128B)

Заметки по проектированию

The 28-pin UQFN (4x4 mm) package dissipates the modest 3.3 V active power of a 25 MHz MCU comfortably, but the exposed pad (EP) must be soldered to a continuous ground plane with at least 4 thermal vias to keep theta_JA within the industrial temperature range. Estimated: with EP soldered to a 1 square inch copper pour on a 2-layer FR4 board, theta_JA is approximately 35 °C/W; without the EP land pattern, theta_JA exceeds 80 °C/W and the device may enter thermal shutdown under sustained full-core load.

Route the USB DP/DM traces as a 90-ohm differential pair with matched length (±150 mil) directly from the MCU pins to the USB connector. Place the ESD protection array (such as USBLC6-2SC6) within 3 mm of the connector, and add a 47 nF X7R bypass capacitor on each of VDD and VUSB. Decoupling capacitors should be placed as close as possible to the MCU power pins, with a 0.1 µF and a 1 µF X7R in parallel for high-frequency noise suppression.

Do not skip configuration of the Peripheral Pin Select (PPS) registers in code - the UART, SPI, and I2C peripherals do not have fixed GPIO assignments on PIC32MM, and a missing PPS unlock sequence will leave peripherals silent. Use the MPLAB Code Configurator (MCC) to generate the PPS mapping to avoid manual errors. Also note that the PIC32MM0256GPM028-I/M6 is the industrial temperature variant (-40 to +85 °C); use the -E/M6 suffix for extended temperature designs.

Use a 12 MHz or 24 MHz crystal with appropriate load capacitors as the USB clock source - the USB peripheral requires a precise 48 MHz reference, and an inaccurate crystal will cause USB enumeration failures or intermittent disconnects. The PLL multiplier settings in the device configuration bits must match the chosen crystal. Estimated: load capacitance mismatch greater than 2 pF can pull the USB clock by more than 50 ppm, exceeding the USB 2.0 full-speed accuracy budget.

Информация о соответствии

RoHS
Compliant
REACH
Compliant
AEC-Q100
Not Applicable
Без свинца
Yes
Без галогенов
[Data Needed]
Конфликтные минералы
Compliant

RoHS compliant per Microchip product page and distributor listings. EAR99 export classification. Not AEC-Q100 qualified - this is an industrial-temperature MCU (-40 to +85 °C), not an automotive-grade part.

Данные проверены: 2026-10-01 — данные проверены и курируются командой компонентной инженерии XAIPART

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