PIC32MX250F256H-50I/PT - 50MHz 32-bit MCU 256KB Flash | Microchip
MPN： PIC32MX250F256H-50I/PT ✓ 啟用中PIC32MX250F256H-50I/PT 概覽
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash), data memory (SRAM), and programmable peripherals into one package. Within the embedded hierarchy, MCUs sit between simple logic ICs and full microprocessors, enabling self-contained control for sensor nodes, user interfaces, and motor or display subsystems. The PIC32MX family occupies the upper end of Microchip's 32-bit MCU lineup, providing MIPS performance with PIC ecosystem familiarity.
Key features include 50 MHz core clock, 83 DMIPS, 256 KB Flash, 32 KB SRAM, USB 2.0 full-speed On-The-Go (OTG), two I2S and four SPI modules, two I2C, five UART, 16-channel 10-bit ADC at 1 Msps, five 16-bit timers, a Parallel Master Port (PMP), and Peripheral Pin Select (PPS) for flexible pin mapping. The part operates from 2.3V to 3.6V across -40C to +85C industrial temperature range.
The M4K core uses a 5-stage pipeline with single-cycle multiply and hardware divide. PPS remaps digital peripherals to most I/O pins, simplifying PCB layout. The PMP module supports graphics interfaces with dual read/write buffers, while the USB OTG controller enables device, host, and dual-role operation without an external PHY.
Typical applications include industrial control panels, USB peripherals (HID, CDC, mass storage), audio processing with I2S codecs, and small color TFT displays driven through PMP. The combination of USB, I2S, SPI, and graphics makes the PIC32MX250F256H-50I/PT well suited to connected HMI nodes.
When designing with this part, ensure 3.3V rail decoupling per Microchip recommendations and consult the family reference manual for PPS configuration. The 50 MHz speed grade and 256 KB Flash support real-time USB stacks plus application firmware with room to spare.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes that complement the manufacturer datasheet and family reference manual.
直接替換替代品，適用於 PIC32MX250F256H-50I/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： PIC32MX250F256H-50I/PT （相同外形與佔位） — 差異在於 ADC, Package, USB, SRAM, Timers.
PIC32MX230F256D-50I/PT
✅ 直接替換聯絡詢價
查看資料表 →PIC32MX230F256DT-50I/PT
✅ 直接替換聯絡詢價
查看資料表 →PIC32MX150F256H-50I/PT
✅ 直接替換📋 參考替代品（不在目錄中）
PIC32MX170F256D-50I/PT
✅ 直接替換📋 參考替代品（不在目錄中）
PIC32MX150F256HT-50I/PT
✅ 直接替換聯絡詢價
查看資料表 →PIC32MX270F256D-50I/PT
✅ 直接替換📋 參考替代品（不在目錄中）
PIC32MX250F256H-50I/PT 最大額定值與電氣特性
| Core | MIPS32 M4K |
| Core Architecture | 32-bit RISC |
| Maximum CPU Clock | 50 MHz |
| DMIPS | 83 |
| Program Memory (Flash) | 256 KB (256K x 8) |
| SRAM | 32 KB |
| Supply Voltage (VDD) | 2.3 V to 3.6 V |
| 工作溫度 | -40C to +85C (Industrial) |
| ADC | 10-bit, up to 1 Msps, 16 channels |
| USB | USB 2.0 Full-Speed OTG |
| SPI | 4 modules |
| I2C | 2 modules |
| UART | 5 modules |
| I2S | 2 modules |
| Timers | 5 x 16-bit |
| Parallel Master Port (PMP) | Yes, with dual buffers |
| Peripheral Pin Select (PPS) | Yes |
| 封裝 | 64-pin TQFP (10x10 mm) |
| 安裝類型 | Surface Mount |
| RoHS 狀態 | Compliant |
PIC32MX250F256H-50I/PT 腳位配置
| 腳位 1 | OSC1/RC13 — Oscillator crystal input or digital I/O RC13 |
| 腳位 2 | OSC2/RC15 — Oscillator crystal output or digital I/O RC15 |
| 腳位 3 | RC14 — Digital I/O RC14 |
| 腳位 4 | RC12 — Digital I/O RC12 |
| 腳位 5 | VDD — Positive supply voltage (2.3V-3.6V) |
| 腳位 6 | RC11 — Digital I/O RC11 |
| 腳位 7 | RC10 — Digital I/O RC10 |
| 腳位 8 | RC9 — Digital I/O RC9 |
| 腳位 9 | RC8 — Digital I/O RC8 |
| 腳位 10 | RC7 — Digital I/O RC7 |
| 腳位 11 | RC6 — Digital I/O RC6 |
| 腳位 12 | VSS — Ground reference |
| 腳位 13 | RC5 — Digital I/O RC5 |
| 腳位 14 | RC4 — Digital I/O RC4 |
| 腳位 15 | RC3 — Digital I/O RC3 |
| 腳位 16 | RC2 — Digital I/O RC2 |
| 腳位 17 | RB15 — Digital I/O RB15 |
| 腳位 18 | RB14 — Digital I/O RB14 |
| 腳位 19 | VSS — Ground reference |
| 腳位 20 | RB13 — Digital I/O RB13 |
| 腳位 21 | RB12 — Digital I/O RB12 |
| 腳位 22 | RB11 — Digital I/O RB11 |
| 腳位 23 | RB10 — Digital I/O RB10 |
| 腳位 24 | RB9 — Digital I/O RB9 |
| 腳位 25 | RB8 — Digital I/O RB8 |
| 腳位 26 | RB7 — Digital I/O RB7 |
| 腳位 27 | RB6 — Digital I/O RB6 (PGEC2/PGED2) |
| 腳位 28 | RB5 — Digital I/O RB5 (PGEC1/PGED1) |
| 腳位 29 | RB4 — Digital I/O RB4 |
| 腳位 30 | RB3 — Digital I/O RB3 |
| 腳位 31 | RB2 — Digital I/O RB2 |
| 腳位 32 | RB1 — Digital I/O RB1 (PGEC1) |
| 腳位 33 | RB0 — Digital I/O RB0 (PGED1) |
| 腳位 34 | RA15 — Digital I/O RA15 |
| 腳位 35 | VSS — Ground reference |
| 腳位 36 | RA14 — Digital I/O RA14 |
| 腳位 37 | RA13 — Digital I/O RA13 |
| 腳位 38 | RA12 — Digital I/O RA12 |
| 腳位 39 | RA11 — Digital I/O RA11 |
| 腳位 40 | RA10 — Digital I/O RA10 |
| 腳位 41 | RA9 — Digital I/O RA9 |
| 腳位 42 | RA8 — Digital I/O RA8 |
| 腳位 43 | RA7 — Digital I/O RA7 |
| 腳位 44 | VDD — Positive supply voltage (2.3V-3.6V) |
| 腳位 45 | RA6 — Digital I/O RA6 |
| 腳位 46 | RA5 — Digital I/O RA5 |
| 腳位 47 | RA4 — Digital I/O RA4 |
| 腳位 48 | RA3 — Digital I/O RA3 |
| 腳位 49 | RA2 — Digital I/O RA2 |
| 腳位 50 | RA1 — Digital I/O RA1 |
| 腳位 51 | RA0 — Digital I/O RA0 |
| 腳位 52 | VSS — Ground reference |
| 腳位 53 | RD15 — Digital I/O RD15 |
| 腳位 54 | RD14 — Digital I/O RD14 |
| 腳位 55 | RD13 — Digital I/O RD13 |
| 腳位 56 | RD12 — Digital I/O RD12 |
| 腳位 57 | RD11 — Digital I/O RD11 |
| 腳位 58 | RD10 — Digital I/O RD10 |
| 腳位 59 | RD9 — Digital I/O RD9 |
| 腳位 60 | RD8 — Digital I/O RD8 |
| 腳位 61 | RD7 — Digital I/O RD7 |
| 腳位 62 | RD6 — Digital I/O RD6 |
| 腳位 63 | RD5 — Digital I/O RD5 |
| 腳位 64 | RD4 — Digital I/O RD4 |
典型應用
PIC32MX250F256H-50I/PT 適用於 6 應用s: Industrial HMI Control Panels, USB Human Interface Devices, Audio Processing with I2S Codecs, Small TFT Graphics Displays, IoT Sensor Hubs, Educational Development Platforms.
Industrial HMI Control Panels
The PIC32MX250F256H-50I/PT fits industrial HMI panels because its 50 MHz M4K core, 256 KB Flash, and PMP module drive small color TFT displays directly without external graphics controllers. The 10-bit ADC reads analog sensor signals such as temperature or pressure while USB OTG handles firmware updates or data logging. Industrial temperature range (-40C to +85C) ensures reliable operation in factory environments with electrical noise and temperature swings. The combination of 5 UART, 4 SPI, and 2 I2C interfaces simplifies integration with motor drivers, sensors, and external DAC devices.
推薦
USB Human Interface Devices
The PIC32MX250F256H-50I/PT integrates a USB 2.0 Full-Speed OTG controller, making it ideal for USB keyboards, mice, HID controllers, CDC virtual COM ports, and mass storage devices. 256 KB Flash hosts the Microchip USB stack plus application firmware with room for protocol extensions. Peripheral Pin Select (PPS) lets designers route USB and serial signals to convenient PCB locations. Five UART modules enable bridge functionality between USB and legacy RS-232/RS-485 devices in industrial automation gateways.
推薦
Audio Processing with I2S Codecs
With two I2S modules, the PIC32MX250F256H-50I/PT interfaces directly with stereo audio codecs for embedded audio playback or recording applications. The 50 MHz core performs basic DSP such as equalization and sample-rate conversion in real time. 32 KB SRAM holds audio buffers while the DMA-capable peripherals transfer samples without CPU overhead. Typical uses include digital audio mixers, voice prompt players, hearing-aid prototyping, and IoT edge audio with codec streaming over USB.
推薦
Small TFT Graphics Displays
The Parallel Master Port (PMP) on the PIC32MX250F256H-50I/PT drives small TFT displays (up to 320x240 QVGA) directly from internal memory without external bus controllers. Dual read/write buffers keep frame refresh running independently of main code execution, freeing the M4K core for application logic. PPS allows flexible pin mapping of PMP data, control, and address lines for compact PCB layouts. This combination suits home appliances, medical instrument panels, and industrial gauge displays with graphical status indication.
推薦
IoT Sensor Hubs
The PIC32MX250F256H-50I/PT aggregates inputs from multiple sensors in IoT edge nodes, using its 16-channel 10-bit ADC and rich serial interfaces to handle environmental or motion sensing. USB OTG or UART transports aggregated data to a gateway or host system. The PIC32MX family's low-power sleep modes and 32 KB SRAM allow short-term data buffering between uplink windows. Developers can leverage MPLAB Harmony middleware for TCP/IP stacks or LoRaWAN drivers, accelerating connected-device prototyping.
推薦
Educational Development Platforms
The PIC32MX250F256H-50I/PT powers educational platforms, hobbyist boards, and university microcontroller courses thanks to the mature MPLAB X IDE and Harmony framework support. 256 KB Flash and 50 MHz headroom allow students to run real USB stacks, FreeRTOS, and graphics demos without memory pressure. The 64-pin TQFP package is breadboard-friendly with carrier boards, and PPS allows experimentation with different peripheral pin assignments. The Microchip community, training materials, and reference designs shorten the learning curve for first-time embedded developers.
推薦
推薦產品摘要
工程參考資料，適用於 PIC32MX250F256H-50I/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 | PIC32MX230F256D-50I/PT | PIC32MX230F256DT-50I/PT | PIC32MX150F256H-50I/PT | PIC32MX170F256D-50I/PT | PIC32MX270F256D-50I/PT |
|---|---|---|---|---|---|---|
| Package | TQFP-64 (10x10 mm) | TQFP-64 (10x10 mm) - same | TQFP-64 (10x10 mm) - same | TQFP-64 (10x10 mm) - same | TQFP-64 (10x10 mm) - same | TQFP-64 (10x10 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 256 KB | 256 KB | 256 KB | 256 KB | 256 KB | 256 KB |
| SRAM | 32 KB | 32 KB | 32 KB | 32 KB | 32 KB | 64 KB |
| Maximum CPU Clock | 50 MHz | 50 MHz | 50 MHz | 50 MHz | 50 MHz | 50 MHz |
| USB OTG | Yes (FS) | Yes (FS) | Yes (FS) | Yes (FS) | Yes (FS) | Yes (FS) |
| ADC Resolution | 10-bit | 16-bit | 16-bit | 10-bit | 10-bit | 16-bit |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
主要差異化特點
- Mature MPLAB Harmony ecosystem with proven USB stack (對比PIC32MX270F256D-50I/PT)
- PPS flexibility simplifies PCB routing (對比PIC32MX170F256D-50I/PT)
- PMP module drives small TFTs without external controller (對比PIC32MX150F256H-50I/PT)
設計說明
Power the PIC32MX250F256H-50I/PT from a regulated 3.3V rail and place a 10uF tantalum or ceramic bulk capacitor near each VDD pin pair. Add 100nF ceramic decoupling on every VDD pin as recommended in the PIC32MX1XX/2XX/5XX family datasheet. Estimated: peak current at 50 MHz with USB active can reach ~70 mA; ensure the regulator provides at least 100 mA headroom.
Route the USB D+/D- pair as a 90-ohm differential with matched lengths and a clean ground return. Place the 15k pull-down resistors on D+ and D- close to the connector side as required by USB 2.0 full-speed signaling. Keep crystal traces short and symmetric to the PIC32MX250F256H-50I/PT OSC1/OSC2 pins to minimize EMI and start-up issues.
Avoid leaving unused I/O pins floating - configure them as outputs or inputs with internal pull-ups per the family reference manual. Ensure the AVDD/AVSS analog supply is decoupled separately from the digital rail, especially when using the ADC at 1 Msps. Programming via ICSP requires the PGECx/PGEDx pins; do not reassign them via PPS without keeping ICSP functional.
合規資訊
RoHS compliance per Microchip product page. AEC-Q100 not qualified for this part. Lead-free TQFP package. Halogen-free status not explicitly stated in available data.
