PIC32MX250F128D-V/PT - 32-bit MCU, 128KB Flash, USB, TQFP-44 | Microchip
MPN: PIC32MX250F128D-V/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.8 | $6.80 |
| 10 | $6.12 | $61.20 |
| 100 | $5.44 | $544.00 |
| 500 | $4.89 | $2,445.00 |
| 1,000 | $4.35 | $4,350.00 |
PIC32MX250F128D-V/PT Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory (Flash), volatile working memory (SRAM), and a rich set of programmable peripherals onto a single die. The PIC32MX2xx family sits in Microchip's PIC32 hierarchy (PIC32 -> 32-bit MIPS MCU -> PIC32MX1XX/2XX sub-family), targeting low-power USB-enabled connected embedded designs at 0.5 mA/MHz running current and supporting mTouch capacitive touch sensing with 1 ns Input Capture time-stamp resolution.
Key features include a MIPS32 M4K core delivering up to 83 DMIPS, a 10-bit ADC with up to 1 Msps, five 16-bit and two 32-bit timers, RTCC with calendar mode, an integrated temperature sensor, and supply voltage range of 2.3 V to 3.6 V. The PIC32MX250F128D-V/PT also includes mTouch capacitive touch hardware support, JTAG boundary scan, and a Parallel Master Port that enables direct connection to graphics LCDs and external memory buses.
The architecture combines the MIPS M4K Harvard pipeline with Microchip's peripheral integration philosophy, giving developers deterministic interrupt latency, hardware PMP for bus-mastered graphics, and a programmable Peripheral Pin Select block that allows most digital peripherals to be remapped onto almost any digital I/O pin. USB 2.0 full-speed OTG is provided on-chip, eliminating the need for an external PHY in many low-speed USB designs and shortening USB-certified firmware development cycles.
Typical applications include USB audio class devices, mTouch capacitive touch user interfaces with on-screen graphics, low-cost embedded web servers, industrial control panels, and consumer electronics with LCD displays and USB connectivity. The wide operating temperature range and integrated analog make it well-suited for mixed-signal embedded products in industrial environments.
When designing with this device, allocate sufficient PCB area for the USB DP/DM trace impedance (90 ohm differential) and place the decoupling capacitors as close to the VDDCORE pin as possible. Ensure the firmware enables the proper PLL configuration for 40 MHz operation, and consider using the MPLAB Harmony framework to shorten audio and USB stack integration time.
This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes that are not aggregated on the Microchip datasheet alone, helping procurement engineers shorten the qualification cycle.
Drop-in alternatives for PIC32MX250F128D-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 PIC32MX250F128D-V/PT (same form factor and footprint) — differing in ADC, Package, Timers, Operating Temperature, Mounting Type.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC32MX250F128D-I/PT
✅ Drop-In✓ In Stock
$4.1 / Unit
View Datasheet →PIC32MX250F128D-50I/PT
✅ Drop-In✓ In Stock
$2.6 / Unit
View Datasheet →PIC32MX230F128D-V/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX170F256D-V/PT
✅ Drop-In✓ In Stock
$3.78 / Unit
View Datasheet →PIC32MX230F256D-50I/PT
✅ Drop-In✓ In Stock
$4.15 / Unit
View Datasheet →PIC32MX154F128D-V/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX250F128D-V/PT Maximum Ratings & Electrical Characteristics
| Core Architecture | MIPS32 M4K |
| Maximum CPU Speed | 40 MHz (50 MHz / 83 DMIPS family cap) |
| Program Memory (Flash) | 128 KB |
| Data Memory (SRAM) | 32 KB |
| Supply Voltage (VDD) | 2.3 V to 3.6 V |
| I/O Pins | 34 |
| Package | 44-pin TQFP (PT), 10x10 mm, 0.8 mm pitch |
| USB | USB 2.0 full-speed device / host / OTG |
| SPI / I2S Modules | 2 |
| I2C Modules | 2 |
| UART Modules | 2 |
| ADC | 10-bit, up to 1 Msps |
| Timers | Five 16-bit and two 32-bit |
| Operating Temperature Range | -40C to +105C (V grade) |
| RoHS Status | Compliant |
| Mounting Type | Surface Mount (TQFP) |
PIC32MX250F128D-V/PT Pin Configuration
| Pin 1 | RPB7/USBID/RB7 — Remappable I/O / USB ID (pin 1 marker) |
| Pin 2 | VDD — Supply voltage |
| Pin 3 | RPB8/USBVBUS/RB8 — Remappable I/O / USB VBUS sense |
| Pin 4 | VSS — Ground |
| Pin 5 | RPC6/PMA1/RC6 — Remappable I/O / PMP address 1 |
| Pin 6 | RPC7/PMA0/RC7 — Remappable I/O / PMP address 0 |
| Pin 7 | RPC8/PMA2/RC8 — Remappable I/O / PMP address 2 |
| Pin 8 | RPC9/REFO/RC9 — Remappable I/O / reference oscillator output |
| Pin 9 | VSS — Ground |
| Pin 10 | VDD — Supply voltage |
| Pin 11 | RPC10/PMCS1/PMA3/RC10 — Remappable I/O / PMP chip select 1 |
| Pin 12 | RPG6/SCK2/PMA4/RG6 — Remappable I/O / SPI2 clock |
| Pin 13 | RPG7/SDA2/PMA5/RG7 — Remappable I/O / I2C2 data |
| Pin 14 | RPG8/SCL2/PMA6/RG8 — Remappable I/O / I2C2 clock |
| Pin 15 | RPG9/PMA7/RG9 — Remappable I/O / PMP address 7 |
| Pin 16 | VSS — Ground |
| Pin 17 | VDD — Supply voltage |
| Pin 18 | RPF0/PMD0/RF0 — Remappable I/O / PMP data 0 |
| Pin 19 | RPF1/PMD1/RF1 — Remappable I/O / PMP data 1 |
| Pin 20 | RPF2/PMD2/RF2 — Remappable I/O / PMP data 2 |
| Pin 21 | RPF3/PMD3/RF3 — Remappable I/O / PMP data 3 |
| Pin 22 | RPF4/PMD4/RF4 — Remappable I/O / PMP data 4 |
| Pin 23 | RPF5/PMD5/RF5 — Remappable I/O / PMP data 5 |
| Pin 24 | RPF6/PMD6/RF6 — Remappable I/O / PMP data 6 |
| Pin 25 | RPF7/PMD7/RF7 — Remappable I/O / PMP data 7 |
| Pin 26 | RPF8/PMD8/RF8 — Remappable I/O / PMP data 8 |
| Pin 27 | VSS — Ground |
| Pin 28 | VDD — Supply voltage |
| Pin 29 | OSC1/CLKI/RA12 — Crystal oscillator input / clock input |
| Pin 30 | OSC2/CLKO/RA13 — Crystal oscillator output / clock output |
| Pin 31 | SOSCI/RPC13/RC13 — Secondary oscillator input |
| Pin 32 | SOSCO/RPC14/RC14 — Secondary oscillator output |
| Pin 33 | VCAP/VDDCORE — Core voltage decoupling cap |
| Pin 34 | RPB5/RB5 — Remappable I/O |
| Pin 35 | RPB4/RB4 — Remappable I/O |
| Pin 36 | RPB3/RB3 — Remappable I/O |
| Pin 37 | RPB2/CTED1/RB2 — Remappable I/O / CTMU |
| Pin 38 | RPB1/CTED0/RB1 — Remappable I/O / CTMU |
| Pin 39 | RPB0/PGED1/RB0 — Remappable I/O / programming data |
| Pin 40 | RPB6/PGEC1/RB6 — Remappable I/O / programming clock |
| Pin 41 | RPB9/USBDP/RB9 — Remappable I/O / USB D+ |
| Pin 42 | RPB10/USBDM/RB10 — Remappable I/O / USB D- |
| Pin 43 | RPB11/RB11 — Remappable I/O |
| Pin 44 | RPB12/RB12 — Remappable I/O |
Typical Applications
PIC32MX250F128D-V/PT is suitable for 6 applications: USB Audio Device (Headset / Microphone), Capacitive Touch HMI Panel (mTouch), Embedded Web Server / IoT Gateway, Industrial Control Panel with Graphics LCD, USB Barcode Scanner / HID Device, Portable Data Logger with USB Mass Storage.
USB Audio Device (Headset / Microphone)
The PIC32MX250F128D-V/PT's USB 2.0 full-speed OTG and dual I2S modules make it ideal for USB headset and microphone designs. The on-chip 10-bit ADC plus external audio codec support delivers 8 kHz to 48 kHz sample rates while the 128 KB Flash accommodates USB audio class firmware plus DSP routines. Its 0.5 mA/MHz active current keeps battery drain low, and the 32 KB SRAM buffers stereo 16-bit audio at 48 ksps without dropouts.
Recommended
Capacitive Touch HMI Panel (mTouch)
With CTMU hardware, 1 ns Input Capture resolution, and up to 34 I/O pins, the PIC32MX250F128D-V/PT supports up to 28 mTouch electrodes for buttons, sliders, and proximity sensors. The mTouch library and Microchip's noise-robust firmware reference designs enable designs that pass IEC 61000-4-6 conducted immunity. Combined with PMP-driven LCD graphics, this part delivers a complete touch-and-display HMI in a single TQFP-44 footprint.
Recommended
Embedded Web Server / IoT Gateway
The PIC32MX250F128D-V/PT integrates USB device/host with Ethernet-ready peripherals via SPI (for ENC28J60 or W5500), making it well suited to low-cost IPv4 web servers and IoT gateways. Its 128 KB Flash stores the Microchip Harmony TCP/IP stack plus a custom web UI, while 32 KB SRAM holds HTTP buffers and socket descriptors. The MIPS M4K core executes the network stack efficiently at 40 MHz.
Recommended
Industrial Control Panel with Graphics LCD
The PIC32MX250F128D-V/PT's Parallel Master Port (PMP) directly drives small TFT/STN graphics LCDs without an external controller IC, saving BOM cost. With 34 GPIO, 5x 16-bit timers, and 2x 32-bit timers, it handles quadrature encoder inputs and PWM outputs concurrently. The V temperature grade (-40C to +105C) supports factory-floor environments above industrial -40C to +85C.
Recommended
USB Barcode Scanner / HID Device
The PIC32MX250F128D-V/PT's USB full-speed HID class support enables drop-in barcode scanner designs that enumerate as a USB keyboard. With 128 KB Flash, the firmware can include 1D/2D decode libraries plus vendor-specific extensions. The 40 MHz core decodes typical 2D barcode patterns in under 50 ms, while the 32 KB SRAM holds image frames from the CMOS sensor over UART or SPI.
Recommended
Portable Data Logger with USB Mass Storage
The PIC32MX250F128D-V/PT's USB device + PMP + 32 KB SRAM combination supports portable data loggers that present as USB mass storage when connected to a host PC. Use the RTCC for timestamped logging, the 10-bit ADC for analog sensor inputs, and external SPI Flash for bulk storage. The low 0.5 mA/MHz active current extends battery life in field deployments.
Recommended
Recommended Products Summary
Engineering reference data for PIC32MX250F128D-V/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC32MX250F128D-I/PT | PIC32MX250F128D-50I/PT | PIC32MX230F128D-V/PT | PIC32MX170F256D-V/PT | PIC32MX230F256D-50I/PT | PIC32MX154F128D-V/PT |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | TQFP-44 (10x10 mm) | TQFP-44 (same) | TQFP-44 (same) | TQFP-44 (same) | TQFP-44 (same) | TQFP-44 (same) | TQFP-44 (same) |
| Maximum CPU Speed | 40 MHz | 40 MHz | 50 MHz | 40 MHz | 50 MHz | 50 MHz | 40 MHz |
| Flash Memory | 128 KB | 128 KB | 128 KB | 128 KB | 256 KB | 256 KB | 128 KB |
| SRAM | 32 KB | 32 KB | 32 KB | 16 KB | 32 KB | 32 KB | 32 KB |
| USB | USB 2.0 FS OTG | USB 2.0 FS OTG | USB 2.0 FS OTG | USB 2.0 FS OTG | USB 2.0 FS OTG | USB 2.0 FS OTG | No USB |
| Operating Temperature | -40C to +105C (V grade) | -40C to +85C (I grade) | -40C to +85C (I grade) | -40C to +105C (V grade) | -40C to +105C (V grade) | -40C to +85C (I grade) | -40C to +105C (V grade) |
| I/O Pins | 34 | 34 | 34 | 34 | 34 | 34 | 34 |
Key Differentiators
- Wide operating temperature range (V grade) (vs PIC32MX250F128D-I/PT)
- Same TQFP-44 footprint with higher performance (vs PIC32MX250F128D-50I/PT)
- More SRAM than 230-family alternative (vs PIC32MX230F128D-V/PT)
Design Notes
Route the USB DP (pin 41) and DM (pin 42) lines as a 90-ohm differential pair with matched length, keeping traces short and isolated from digital switching signals. Place the USB ESD protection array within 5 mm of the connector. According to Microchip's USB design guidelines, add a 15 kohm pull-down on the USBID pin (pin 1) for proper OTG role detection.
Place a 10 uF ceramic decoupling capacitor and a 100 nF ceramic capacitor as close as possible to each VDD/VSS pair (pins 2/4, 10/9, 17/16, 28/27, plus 44/8 power pair). The VCAP/VDDCORE pin (pin 33) requires a single 10 uF low-ESR ceramic capacitor placed within 1 mm of the pin to stabilize the internal 1.8V regulator that powers the MIPS core.
When migrating firmware from PIC32MX250F128D-I/PT (40 MHz) to PIC32MX250F128D-50I/PT (50 MHz), verify the PLL configuration register and instruction timing loops. Peripheral clocks derived from PBCLK must be reconfigured to avoid baud-rate errors on UART and SPI. Always re-run USB stack compliance validation when changing CPU speed, as the 48 MHz USB clock derivation is dependent on PLL stability.
Estimated: At 40 MHz with all peripherals active at 3.3V, the PIC32MX250F128D-V/PT draws approximately 20 mA, dissipating around 66 mW of power. With the TQFP-44 thermal resistance of approximately 50 C/W (typical 4-layer JEDEC JESD51 test board), the junction temperature rise above ambient is roughly 3.3C - well within the 105C V-grade limit and generally requiring no thermal management beyond standard PCB copper pour.
Compliance Information
RoHS and REACH compliant per Microchip product page. AEC-Q100 not applicable - this part targets industrial/consumer markets; choose PIC32MX250F128D-I/PT variants with automotive screening where required. Halogen-free status not explicitly stated in provided data.
