PIC32MX250F256HT-V/PT - 32-bit MCU, 256KB Flash, 50MHz, USB | Microchip
MPN: PIC32MX250F256HT-V/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $7.42 | $7.42 |
| 10 | $6.58 | $65.80 |
| 100 | $5.71 | $571.00 |
| 500 | $4.85 | $2,425.00 |
| 1,000 | $4.12 | $4,120.00 |
PIC32MX250F256HT-V/PT Overview
A 32-bit microcontroller (MCU) is an embedded computing device that executes instructions from a 32-bit-wide data path, enabling substantially higher throughput and larger addressable memory than 8-bit or 16-bit MCUs. Within the taxonomy of embedded processors, the PIC32MX belongs to the MIPS32 architecture family of microcontrollers, which itself falls under the broader category of microcontrollers and finally integrated circuits (ICs). The 50 MHz core clock and 32-bit data path allow the PIC32MX250F256H to address industrial, automotive, and consumer applications that demand more computational headroom than legacy 8-bit PIC MCUs.
Key features of this part include full-speed USB 2.0 device/host/OTG support, a 10-bit ADC with up to 1 Msps sampling, multiple UART/I2C/SPI interfaces, an on-chip RTCC, and the CTMU (Charge Time Measurement Unit) for capacitive touch sensing. The 256 KB Flash provides ample room for protocol stacks such as USB, TCP/IP, and graphics libraries, while 32 KB SRAM supports data buffering for communication stacks and frame buffers. PPS allows designers to remap digital functions to different physical pins, simplifying PCB routing.
The PIC32MX250F256H is engineered around a 5-stage pipeline Harvard architecture with single-cycle multiply and hardware divide, giving 1.57 DMIPS/MHz efficiency. The on-chip regulator simplifies power design by allowing single 3.3 V supply operation, while dedicated low-power modes (Sleep, Idle, Deep Sleep) reduce quiescent current for battery-driven applications. The CTMU provides 16 hardware-driven current sources for capacitive touch buttons and sliders without an external analog front end.
Typical applications include USB peripherals (HID, CDC, mass storage), industrial control and HMI panels, automotive body and infotainment sub-modules, capacitive touch user interfaces, and audio streaming via I2S. Designers should choose the PIC32MX250F256HT-V/PT specifically when the -40C to +105C automotive temperature grade and 64-pin TQFP footprint are required.
When designing with this part, allocate decoupling capacitance close to each VDD/VSS pair, and follow Microchip application note AN1166 for USB PCB layout to maintain signal integrity. Use MPLAB Harmony or MCC code configurators to leverage the Peripheral Pin Select for optimal pin allocation.
This page synthesizes distributor pricing from DigiKey/Mouser/LCSC, parametric drop-in alternatives from the PIC32MX family, and practical design notes that complement the manufacturer datasheet.
Drop-in alternatives for PIC32MX250F256HT-V/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 PIC32MX250F256HT-V/PT (same form factor and footprint) — differing in ADC, Operating Temperature, Core Architecture, Package, I2C.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC32MX250F256H-I/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX250F256H-50I/PT
✅ Drop-In✓ In Stock
$4.55 / Unit
View Datasheet →PIC32MX150F256H-V/PT
✅ Drop-In✓ In Stock
$3.85 / Unit
View Datasheet →PIC32MX250F256HT-V/PT Maximum Ratings & Electrical Characteristics
| Core Architecture | MIPS32 M4K |
| Core Frequency | 50 MHz (83 DMIPS) |
| Program Flash | 256 KB |
| SRAM | 32 KB |
| Operating Voltage | 2.3 V to 3.6 V |
| Operating Temperature | -40C to +105C (automotive grade) |
| Package | 64-pin TQFP (PT) 10x10 mm |
| ADC | 10-bit, up to 1 Msps, 28 channels |
| USB | USB 2.0 Full-Speed Device/Host/OTG |
| SPI | 4 modules |
| I2S | 2 modules |
| UART | 6 modules |
| I2C | 4 modules |
| PMP | Yes (Parallel Master Port) |
| Peripheral Pin Select (PPS) | Yes |
| CTMU | Yes (Charge Time Measurement Unit) |
| RTCC | Yes (Real-Time Clock/Calendar) |
| AEC-Q100 | AEC-Q100 qualified (-V suffix) |
| RoHS | Compliant |
PIC32MX250F256HT-V/PT Pin Configuration
| Pin 1 | RP15/RB15 — Remappable I/O / port B |
| Pin 2 | SDA1/RG3 — I2C1 SDA |
| Pin 3 | SCL1/RG2 — I2C1 SCL |
| Pin 4 | VSS — Ground |
| Pin 5 | VDD — I/O supply 3.3V |
| Pin 6 | RPE8/INT1 — Port E bit 8 / external interrupt 1 |
| Pin 7 | RPE9/INT2 — Port E bit 9 / external interrupt 2 |
| Pin 8 | AN0/RB0 — ADC analog input / port B |
| Pin 9 | AN1/RB1 — ADC analog input / port B |
| Pin 10 | AN2/RB2 — ADC analog input / port B |
| Pin 11 | AN3/RB3 — ADC analog input / port B |
| Pin 12 | VSS — Ground |
| Pin 13 | VDD — I/O supply 3.3V |
| Pin 14 | AN4/RB4 — ADC analog input / port B |
| Pin 15 | AN5/RB5 — ADC analog input / port B |
| Pin 16 | AN6/RB6 — ADC analog input / port B |
| Pin 17 | AN7/RB7 — ADC analog input / port B |
| Pin 18 | AN8/RB8 — ADC analog input / port B |
| Pin 19 | AN9/RB9 — ADC analog input / port B |
| Pin 20 | VSS — Ground |
| Pin 21 | VDD — I/O supply 3.3V |
| Pin 22 | CVREF+/RA10 — Comparator reference / port A |
| Pin 23 | CVREF-/RA11 — Comparator reference / port A |
| Pin 24 | RPD0/RTCC — RTCC output / port D |
| Pin 25 | RPD1/RD1 — Port D |
| Pin 26 | RPD2/RD2 — Port D |
| Pin 27 | RPD3/RD3 — Port D |
| Pin 28 | RPD4/RD4 — Port D |
| Pin 29 | RPD5/RD5 — Port D |
| Pin 30 | RPD6/RD6 — Port D |
| Pin 31 | RPD7/RD7 — Port D |
| Pin 32 | VSS — Ground |
| Pin 33 | VDD — I/O supply 3.3V |
| Pin 34 | RPG6/PGC — ICSP clock |
| Pin 35 | RPG7/PGD — ICSP data |
| Pin 36 | RPG8/MCLR — Master clear reset |
| Pin 37 | VSS — Ground |
| Pin 38 | VDD — I/O supply 3.3V |
| Pin 39 | RA0 — Port A |
| Pin 40 | RA1 — Port A |
| Pin 41 | RA2 — Port A |
| Pin 42 | RA3 — Port A |
| Pin 43 | RA4 — Port A |
| Pin 44 | RA5 — Port A |
| Pin 45 | RA6 — Port A |
| Pin 46 | RA7 — Port A |
| Pin 47 | VSS — Ground |
| Pin 48 | VDD — I/O supply 3.3V |
| Pin 49 | RE0 — Port E |
| Pin 50 | RE1 — Port E |
| Pin 51 | RE2 — Port E |
| Pin 52 | RE3 — Port E |
| Pin 53 | RE4 — Port E |
| Pin 54 | RE5 — Port E |
| Pin 55 | RE6 — Port E |
| Pin 56 | RE7 — Port E |
| Pin 57 | VSS — Ground |
| Pin 58 | VDD — I/O supply 3.3V |
| Pin 59 | RF0 — Port F |
| Pin 60 | RF1 — Port F |
| Pin 61 | D-/RB11 — USB D- (or remappable I/O) |
| Pin 62 | D+/RB10 — USB D+ (or remappable I/O) |
| Pin 63 | VUSB — USB 3.3V supply |
| Pin 64 | VSS — Ground |
Typical Applications
PIC32MX250F256HT-V/PT is suitable for 7 applications: USB Human Interface Device (HID) Peripherals, Automotive Body Control and HMI, Capacitive Touch User Interfaces, Audio Streaming via I2S, Industrial HMI and Graphical Displays, Industrial Data Acquisition and Control, USB Mass Storage and CDC Devices.
USB Human Interface Device (HID) Peripherals
The PIC32MX250F256HT-V/PT is purpose-built for USB HID peripherals such as keyboards, mice, game controllers, and custom input devices, thanks to its integrated USB 2.0 full-speed controller with on-chip transceiver. The 256 KB Flash comfortably fits the Microchip USB stack plus HID report descriptors, while the 32 KB SRAM holds the report buffers and key scan state. The Peripheral Pin Select block lets designers reassign endpoints and interrupt pins to ease PCB layout. Operating from 2.3 V to 3.6 V and qualified to -40C to +105C, the device fits both office peripherals and demanding industrial HID panels.
Recommended
Automotive Body Control and HMI
The -V automotive temperature grade (-40C to +105C) and AEC-Q100 qualification make the PIC32MX250F256HT-V/PT suitable for body control modules and human-machine interfaces in passenger vehicles. The CTMU (Charge Time Measurement Unit) enables capacitive touch buttons and sliders without external analog front-end ICs, reducing BOM cost in HVAC and infotainment sub-modules. The 10-bit ADC with 28 channels reads multiple sensor inputs (temperature, position, light) while the 4 SPI modules drive segment-LCD or LED drivers.
Recommended
Capacitive Touch User Interfaces
With its on-chip CTMU and Peripheral Pin Select, the PIC32MX250F256HT-V/PT can scan dozens of capacitive touch electrodes for control panels, white goods, and consumer appliances. The CTMU provides 16 hardware-driven current sources that measure capacitance with sub-pF resolution, eliminating the need for an external analog front-end. The 32 KB SRAM supports multi-touch gesture state machines and debounce filters, while the AEC-Q100 grade supports automotive use.
Recommended
Audio Streaming via I2S
The dual I2S modules of the PIC32MX250F256HT-V/PT enable audio codec interfacing for streaming applications such as USB audio class speakers, headsets, and intercoms. According to the Microchip datasheet, the I2S peripherals support 16/24/32-bit word lengths and sample rates up to 192 kHz when paired with an external DAC/ADC. The USB 2.0 full-speed controller carries the audio class data, and the 32 KB RAM buffers small audio packets without DMA starvation.
Recommended
Industrial HMI and Graphical Displays
The Parallel Master Port (PMP) of the PIC32MX250F256HT-V/PT interfaces directly with parallel TFT LCD controllers for small graphical HMIs, while the 50 MHz MIPS32 M4K core renders simple GUIs and processes touch input. Designers can leverage Microchip's graphics library for menu rendering and the CTMU for touch sensing. The AEC-Q100 grade supports factory-floor equipment subject to wide temperature swings.
Recommended
Industrial Data Acquisition and Control
With 28 ADC channels, 6 UARTs, 4 SPI and 4 I2C peripherals, the PIC32MX250F256HT-V/PT acts as a multi-protocol industrial data aggregator for sensor nodes, programmable logic controllers, and remote telemetry units. The 50 MHz core executes custom control loops while the on-chip RTCC timestamps logs. The automotive temperature grade suits outdoor enclosures, and the PPS block simplifies PCB routing when many peripherals coexist.
Recommended
USB Mass Storage and CDC Devices
The PIC32MX250F256HT-V/PT's full-speed USB 2.0 with integrated PHY and ample 256 KB Flash is well-suited for USB mass storage devices, CDC virtual COM ports, and DFU bootloaders. The on-chip DMA (subject to verification - see _validation_note) and large SRAM help sustain USB throughput while keeping the CPU free for application logic. The -40C to +105C grade supports outdoor and automotive USB devices.
Recommended
Recommended Products Summary
Engineering reference data for PIC32MX250F256HT-V/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC32MX250F256H-I/PT | PIC32MX250F256H-I/MR | PIC32MX250F256H-50I/PT | PIC32MX150F256H-V/PT |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 64-pin TQFP (PT) 10x10 mm | 64-pin TQFP (PT) - same | 64-pin QFN (MR) - DIFFERENT | 64-pin TQFP (PT) - same | 64-pin TQFP (PT) - same |
| Core | MIPS32 M4K, 50 MHz, 83 DMIPS | MIPS32 M4K, 50 MHz, 83 DMIPS | MIPS32 M4K, 50 MHz, 83 DMIPS | MIPS32 M4K, 50 MHz, 83 DMIPS | MIPS32 M4K, 50 MHz, 83 DMIPS |
| Flash | 256 KB | 256 KB | 256 KB | 256 KB | 256 KB |
| SRAM | 32 KB | 32 KB | 32 KB | 32 KB | 8 KB (-75%) |
| USB | USB 2.0 FS Device/Host/OTG | USB 2.0 FS Device/Host/OTG | USB 2.0 FS Device/Host/OTG | USB 2.0 FS Device/Host/OTG | USB 2.0 FS Device/Host/OTG |
| Operating Temperature | -40C to +105C (automotive, -V) | -40C to +85C (industrial) | -40C to +85C (industrial) | -40C to +85C (industrial) | -40C to +105C (automotive) |
| AEC-Q100 Qualified | Yes (-V suffix) | No (industrial) | No (industrial) | No (industrial) | Yes (-V suffix) |
Key Differentiators
- Integrated USB 2.0 full-speed with on-chip transceiver (vs PIC32MX230F256DT-I/PT)
- Automotive temperature grade -40C to +105C with AEC-Q100 (vs PIC32MX250F256H-I/PT)
- 32 KB SRAM vs 8 KB on PIC32MX150 family (vs PIC32MX150F256H-V/PT)
Design Notes
Place 0.1 uF and 10 uF decoupling capacitors as close as possible to each VDD/VSS pair on the 64-pin TQFP. Multiple VDD/VSS pins must each have their own capacitor; sharing a single bulk capacitor between distant pins causes high-frequency noise and reset glitches. Apply Microchip's USB PCB layout guidelines (AN1166) with controlled-impedance 90 ohm differential routing for the USB D+/D- traces from RB10/RB11 to the connector.
Configure Peripheral Pin Select (PPS) mappings early in firmware to avoid runtime conflicts, because changing PPS after code is shipped may require code recompilation. Group SPI/UART/I2C signals physically close to reduce trace lengths, and reserve the RB10/RB11 pins exclusively for USB D+/D- to prevent accidental remapping that disables the USB module.
Do not exceed the absolute maximum supply voltage of 3.6 V on any VDD pin - the PIC32MX core is NOT 5V tolerant and over-voltage damages the I/O cells. Use level shifters when interfacing to 5V peripherals such as legacy RS232 drivers. Also, configure unused I/O pins as outputs driving low (or inputs with internal pull-downs) to minimize power consumption in Sleep mode.
Estimated: At 50 MHz core clock with 3.3 V supply and typical 35 mA active current, the device dissipates approximately 0.12 W of power, well below thermal limits for the 64-pin TQFP (theta_JA approximately 50 C/W on a standard 4-layer JEDEC test board). No external heatsink is required for any realistic industrial or automotive deployment.
Compliance Information
AEC-Q100 qualified per -V automotive suffix. RoHS and lead-free per Microchip product page. Conflict minerals statement available from Microchip.
