PIC32MX250F256H-50I/PT - 50MHz 32-bit MCU 256KB Flash | Microchip
MPN: PIC32MX250F256H-50I/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $7.11 | $7.11 |
| 10 | $6.43 | $64.30 |
| 100 | $5.62 | $562.00 |
| 500 | $5.05 | $2,525.00 |
| 1,000 | $4.55 | $4,550.00 |
PIC32MX250F256H-50I/PT Overview
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.
Drop-in alternatives for PIC32MX250F256H-50I/PT — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with PIC32MX250F256H-50I/PT (same form factor and footprint) — differing in ADC, Package, USB, SRAM, Timers.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC32MX230F256D-50I/PT
✅ Drop-In✓ In Stock
$4.15 / Unit
View Datasheet →PIC32MX230F256DT-50I/PT
✅ Drop-In✓ In Stock
$4.41 / Unit
View Datasheet →PIC32MX150F256H-50I/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX170F256D-50I/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX150F256HT-50I/PT
✅ Drop-In✓ In Stock
$3.55 / Unit
View Datasheet →PIC32MX270F256D-50I/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX250F256H-50I/PT Maximum Ratings & Electrical Characteristics
| 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 |
| Operating Temperature | -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 |
| Package | 64-pin TQFP (10x10 mm) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
PIC32MX250F256H-50I/PT Pin Configuration
| Pin 1 | OSC1/RC13 — Oscillator crystal input or digital I/O RC13 |
| Pin 2 | OSC2/RC15 — Oscillator crystal output or digital I/O RC15 |
| Pin 3 | RC14 — Digital I/O RC14 |
| Pin 4 | RC12 — Digital I/O RC12 |
| Pin 5 | VDD — Positive supply voltage (2.3V-3.6V) |
| Pin 6 | RC11 — Digital I/O RC11 |
| Pin 7 | RC10 — Digital I/O RC10 |
| Pin 8 | RC9 — Digital I/O RC9 |
| Pin 9 | RC8 — Digital I/O RC8 |
| Pin 10 | RC7 — Digital I/O RC7 |
| Pin 11 | RC6 — Digital I/O RC6 |
| Pin 12 | VSS — Ground reference |
| Pin 13 | RC5 — Digital I/O RC5 |
| Pin 14 | RC4 — Digital I/O RC4 |
| Pin 15 | RC3 — Digital I/O RC3 |
| Pin 16 | RC2 — Digital I/O RC2 |
| Pin 17 | RB15 — Digital I/O RB15 |
| Pin 18 | RB14 — Digital I/O RB14 |
| Pin 19 | VSS — Ground reference |
| Pin 20 | RB13 — Digital I/O RB13 |
| Pin 21 | RB12 — Digital I/O RB12 |
| Pin 22 | RB11 — Digital I/O RB11 |
| Pin 23 | RB10 — Digital I/O RB10 |
| Pin 24 | RB9 — Digital I/O RB9 |
| Pin 25 | RB8 — Digital I/O RB8 |
| Pin 26 | RB7 — Digital I/O RB7 |
| Pin 27 | RB6 — Digital I/O RB6 (PGEC2/PGED2) |
| Pin 28 | RB5 — Digital I/O RB5 (PGEC1/PGED1) |
| Pin 29 | RB4 — Digital I/O RB4 |
| Pin 30 | RB3 — Digital I/O RB3 |
| Pin 31 | RB2 — Digital I/O RB2 |
| Pin 32 | RB1 — Digital I/O RB1 (PGEC1) |
| Pin 33 | RB0 — Digital I/O RB0 (PGED1) |
| Pin 34 | RA15 — Digital I/O RA15 |
| Pin 35 | VSS — Ground reference |
| Pin 36 | RA14 — Digital I/O RA14 |
| Pin 37 | RA13 — Digital I/O RA13 |
| Pin 38 | RA12 — Digital I/O RA12 |
| Pin 39 | RA11 — Digital I/O RA11 |
| Pin 40 | RA10 — Digital I/O RA10 |
| Pin 41 | RA9 — Digital I/O RA9 |
| Pin 42 | RA8 — Digital I/O RA8 |
| Pin 43 | RA7 — Digital I/O RA7 |
| Pin 44 | VDD — Positive supply voltage (2.3V-3.6V) |
| Pin 45 | RA6 — Digital I/O RA6 |
| Pin 46 | RA5 — Digital I/O RA5 |
| Pin 47 | RA4 — Digital I/O RA4 |
| Pin 48 | RA3 — Digital I/O RA3 |
| Pin 49 | RA2 — Digital I/O RA2 |
| Pin 50 | RA1 — Digital I/O RA1 |
| Pin 51 | RA0 — Digital I/O RA0 |
| Pin 52 | VSS — Ground reference |
| Pin 53 | RD15 — Digital I/O RD15 |
| Pin 54 | RD14 — Digital I/O RD14 |
| Pin 55 | RD13 — Digital I/O RD13 |
| Pin 56 | RD12 — Digital I/O RD12 |
| Pin 57 | RD11 — Digital I/O RD11 |
| Pin 58 | RD10 — Digital I/O RD10 |
| Pin 59 | RD9 — Digital I/O RD9 |
| Pin 60 | RD8 — Digital I/O RD8 |
| Pin 61 | RD7 — Digital I/O RD7 |
| Pin 62 | RD6 — Digital I/O RD6 |
| Pin 63 | RD5 — Digital I/O RD5 |
| Pin 64 | RD4 — Digital I/O RD4 |
Typical Applications
PIC32MX250F256H-50I/PT is suitable for 6 applications: 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.
Recommended
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.
Recommended
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.
Recommended
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.
Recommended
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.
Recommended
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.
Recommended
Recommended Products Summary
Engineering reference data for PIC32MX250F256H-50I/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | 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 |
Key Differentiators
- Mature MPLAB Harmony ecosystem with proven USB stack (vs PIC32MX270F256D-50I/PT)
- PPS flexibility simplifies PCB routing (vs PIC32MX170F256D-50I/PT)
- PMP module drives small TFTs without external controller (vs PIC32MX150F256H-50I/PT)
Design Notes
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.
Compliance Information
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.
