PIC32MX250F128C-V/TL - 32-bit 40MHz 128KB Flash MCU | Microchip
MPN: PIC32MX250F128C-V/TL ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $5.42 | $5.42 |
| 10 | $4.89 | $48.90 |
| 100 | $4.21 | $421.00 |
| 500 | $3.74 | $1,870.00 |
| 1,000 | $3.29 | $3,290.00 |
PIC32MX250F128C-V/TL Overview
A 32-bit PIC microcontroller is a microcontroller built around a 32-bit data path and a RISC instruction set architecture, offering significantly higher throughput than 8-bit or 16-bit predecessors. The PIC32MX family sits in the hierarchy: 32-bit MCU -> MIPS M4K core -> PIC32MX series -> general-purpose + USB sub-family. It targets applications needing DSP-class arithmetic, larger memory maps, and high-bandwidth peripherals such as USB 2.0 Full-Speed, I2S audio, and PMP graphics interfaces. Compared to 8-bit PIC16/PIC18 parts, PIC32MX250F128C executes roughly 5-10x faster per MHz and supports C-compiled code with much larger addressable Flash and SRAM blocks.
Key features include a MIPS32 M4K core at 40 MHz (50 MHz maximum on selected variants) with 1.56 DMIPS/MHz throughput, 128 KB Flash (128K x 8) and 32 KB SRAM, 19 general-purpose I/O pins, on-chip USB 2.0 Full-Speed device, multiple I2S/SPI/I2C/UART peripherals, five 16-bit timers, a 10-bit ADC with up to 13 channels, a Parallel Master Port (PMP) for graphics, and Peripheral Pin Select (PPS) for flexible pin mapping. AEC-Q100 qualification makes the V-temperature variant suitable for automotive ECUs and body controllers.
Architecture-wise, the M4K core fetches fixed-length 32-bit instructions and provides a hardware multiplier, zero-overhead loops, and a shadow register set for real-time interrupt latency. PPS allows remapping of most digital peripherals to nearly any I/O pin, simplifying PCB layout and enabling reuse across product variants.
Typical applications include USB peripherals (HID, CDC, MSD class devices), audio interfaces with I2S codecs, low-cost graphics terminals, capacitive touch HMI panels, automotive body controllers, and industrial sensors with USB diagnostics. The AEC-Q100 rating extends suitability to infotainment accessory controllers and OBD-II dongles.
When designing with this part, ensure the VTLA exposed pad is soldered to a sufficient copper pour (minimum 25 mm^2, recommended >100 mm^2) for thermal dissipation - the small package dissipates more heat than its size suggests at high CPU load. Decouple VDD/VBUS with 100 nF ceramic capacitors within 2 mm of each supply pin, and route the USB DP/DM traces as a 90 ohm differential pair.
This page synthesizes distributor pricing, drop-in alternatives from the PIC32MX family, and practical design notes not collected in the manufacturer datasheet.
Drop-in alternatives for PIC32MX250F128C-V/TL — 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 PIC32MX250F128C-V/TL (same form factor and footprint) — differing in ADC, Core Architecture, Package, Timers, USB.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC32MX250F128C-I/TL
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3.41 / Unit
View Datasheet →PIC32MX250F128CT-I/TL
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$4.05 / Unit
View Datasheet →PIC32MX250F128C-50I/TL
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3.85 / Unit
View Datasheet →PIC32MX150F128C-V/TL
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3.5 / Unit
View Datasheet →PIC32MX230F064C-V/TL
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$2.05 / Unit
View Datasheet →PIC32MX250F128C-V/TL Maximum Ratings & Electrical Characteristics
| Core Architecture | MIPS32 M4K RISC |
| Data Bus Width | 32-bit |
| Maximum CPU Speed | 40 MHz |
| Program Memory (Flash) | 128 KB (128K x 8) |
| RAM Size | 32 KB (32K x 8) |
| General Purpose I/O | 19 |
| Supply Voltage | 2.3 V to 3.6 V (2.5 V / 3.3 V nominal) |
| Package / Case | 36-VTLA (5x5 mm) with Exposed Pad |
| Operating Temperature Range | -40C to +105C (V grade) |
| Mounting Type | Surface Mount |
| Packaging | Tube (TL) |
| USB Interface | USB 2.0 Full-Speed Device |
| ADC | 10-bit, up to 13 channels |
| Timers | 5 x 16-bit |
| AEC-Q100 Qualification | Yes (automotive) |
| Peripheral Pin Select (PPS) | Yes |
PIC32MX250F128C-V/TL Pin Configuration
| Pin 1 | RA0 — General purpose I/O / analog input AN0 |
| Pin 2 | RA1 — General purpose I/O / analog input AN1 |
| Pin 3 | RA2 — General purpose I/O / analog input AN2 |
| Pin 4 | RA3 — General purpose I/O / analog input AN3 |
| Pin 5 | RA4 — General purpose I/O / analog input AN4 |
| Pin 6 | VDD — Positive supply voltage (2.3V to 3.6V) |
| Pin 7 | VSS — Ground reference |
| Pin 8 | RA5 — General purpose I/O / analog input AN5 |
| Pin 9 | RA6 — General purpose I/O / analog input AN6 |
| Pin 10 | RA7 — General purpose I/O / analog input AN7 |
| Pin 11 | RB0 — General purpose I/O / PGED1 programming |
| Pin 12 | RB1 — General purpose I/O / PGEC1 programming |
| Pin 13 | RB2 — General purpose I/O / USB VBUS detect |
| Pin 14 | RB3 — General purpose I/O / USB D- |
| Pin 15 | RB4 — General purpose I/O / USB D+ |
| Pin 16 | VBUS — USB VBUS sense input |
| Pin 17 | RB5 — General purpose I/O |
| Pin 18 | RB6 — General purpose I/O |
| Pin 19 | RB7 — General purpose I/O |
| Pin 20 | RB8 — General purpose I/O |
| Pin 21 | RB9 — General purpose I/O |
| Pin 22 | RB10 — General purpose I/O |
| Pin 23 | RB11 — General purpose I/O |
| Pin 24 | RC0 — General purpose I/O |
| Pin 25 | RC1 — General purpose I/O |
| Pin 26 | RC2 — General purpose I/O |
| Pin 27 | RC3 — General purpose I/O |
| Pin 28 | RC4 — General purpose I/O |
| Pin 29 | RC5 — General purpose I/O |
| Pin 30 | RC6 — General purpose I/O |
| Pin 31 | RC7 — General purpose I/O |
| Pin 32 | RC8 — General purpose I/O |
| Pin 33 | RC9 — General purpose I/O |
| Pin 34 | VSS — Ground reference |
| Pin 35 | VDD — Positive supply voltage |
| Pin 36 | EP — Exposed thermal pad - MUST be soldered to ground plane |
Typical Applications
PIC32MX250F128C-V/TL is suitable for 7 applications: USB HID Peripherals, Automotive Body Control Modules, I2S Audio Streaming Devices, Low-Cost Graphics HMI Panels, Capacitive Touch Sensor Panels, Industrial USB Diagnostic Dongles, Sensor Hubs and Data Loggers.
USB HID Peripherals
The PIC32MX250F128C-V/TL is well suited for USB Human Interface Devices such as custom keyboards, mice, game controllers, and industrial input panels. Its on-chip USB 2.0 Full-Speed device controller eliminates the need for an external USB PHY, saving BOM cost and PCB area in the 5x5 mm VTLA footprint. With 128 KB Flash and 32 KB SRAM, designers can host full USB stacks (Microchip Harmony or MPLAB USB Framework) plus HID report processing. The MIPS32 M4K core at 40 MHz comfortably handles 1 ms polling at full-speed USB (12 Mbps) with substantial CPU margin for matrix-scanning debounce and LED animation. PPS allows USB DP/DM to be routed to the dedicated package pins without remapping, while remaining GPIOs serve scan matrix and LED PWM. AEC-Q100 qualification allows USB HID accessories such as steering-wheel buttons or center-console knobs to use this part directly.
Recommended
Automotive Body Control Modules
The PIC32MX250F128C-V/TL's AEC-Q100 grade and -40C to +105C operating range make it a strong fit for automotive body controllers handling lighting, mirror adjustment, seat memory, and accessory switching. Its 5x5 mm VTLA package fits behind dashboard switch panels and inside door modules where space is constrained. The 19 GPIOs drive multiple LED drivers, FET pre-drivers, and LIN-bus transceivers, while PPS reassigns UART and PWM peripherals to suit each variant. 128 KB Flash hosts AUTOSAR-free proprietary stacks plus bootloader, and 32 KB SRAM buffers diagnostic CAN/LIN traffic via external transceiver. Designers should use the automotive temperature V-grade part - not the I-grade sibling - and follow the Microchip AN1078 EMI/ESD layout guide for CISPR 25 compliance.
Recommended
I2S Audio Streaming Devices
The PIC32MX250F128C-V/TL drives low-cost I2S audio peripherals such as DACs, ADCs, and codec chips for sound cards, USB audio adapters, and Bluetooth audio receiver dongles. Its dual I2S/SPITM modules support simultaneous transmit and receive paths, enabling full-duplex audio capture and playback at 48 kHz / 96 kHz sample rates. The MIPS32 M4K core plus DMA channels move audio samples between I2S peripherals and SRAM with negligible CPU load, freeing cycles for sample-rate conversion or DSP effects. The 5x5 mm VTLA footprint plus 128 KB Flash accommodates the full USB Audio class 1.0 stack plus a small audio-processing library. Designers typically pair this MCU with an external 24-bit codec and a low-jitter crystal to meet USB audio jitter tolerance.
Recommended
Low-Cost Graphics HMI Panels
The PIC32MX250F128C-V/TL drives small TFT LCD panels for low-cost human-machine interfaces such as appliance control boards, point-of-sale terminals, and industrial sensor readouts. Its Parallel Master Port (PMP) interface supports 8-bit or 16-bit data bus widths for direct TFT connection, while the MIPS32 M4K core at 40 MHz refreshes QVGA (320x240) panels at acceptable frame rates for menu UIs. Peripheral Pin Select (PPS) lets designers remap PMP data, control, and address lines around PCB constraints, critical when routing a 16-bit bus to a small 5x5 mm VTLA footprint. 128 KB Flash stores multiple bitmap screens, fonts, and a lightweight GUI library, while 32 KB SRAM holds active framebuffers for partial updates.
Recommended
Capacitive Touch Sensor Panels
The PIC32MX250F128C-V/TL runs Microchip's mTouch inductive and capacitive touch firmware with the on-chip CTMU peripheral to implement up to 13 touch channels without an external touch controller IC. The MIPS32 M4K core processes charge-timing measurements and debounce filtering in firmware, while the 5x5 mm VTLA package fits behind small touch pads and slider panels for appliances and entry-level industrial controls. PPS lets designers reassign CTMU charge and discharge pins to any GPIO, simplifying PCB layout. 128 KB Flash holds Microchip Harmony touch libraries plus custom UI state machines. AEC-Q100 grade enables capacitive touch buttons on automotive HVAC panels and steering-wheel controls.
Recommended
Industrial USB Diagnostic Dongles
The PIC32MX250F128C-V/TL is a strong fit for industrial diagnostic dongles that expose USB CDC, HID, or vendor-specific interfaces to host PCs for field-service tools. Its USB 2.0 Full-Speed device port plus 19 GPIOs allow connection to SPI sensors, UART-to-RS485 transceivers, or I2C peripherals in a single-chip implementation. The 40 MHz MIPS32 M4K core sustains USB polling and protocol parsing, while 128 KB Flash stores device firmware plus bootloader for field-upgrade support. The 5x5 mm VTLA package keeps the dongle small enough to fit into a sealed plastic enclosure, and the AEC-Q100 grade allows the same part to be reused in automotive diagnostic tools rated to 105C. Drop-in compatibility with the I/TL industrial variant lets designers qualify one PCB for both automotive and industrial SKU lines.
Recommended
Sensor Hubs and Data Loggers
The PIC32MX250F128C-V/TL serves as a low-power sensor hub that aggregates I2C and SPI sensor data, performs on-chip signal conditioning, and streams results over USB or UART to a host processor. Five 16-bit timers drive precise sensor-sampling intervals, while the 10-bit ADC with up to 13 channels supports analog sensors alongside digital ones. The MIPS32 M4K core at 40 MHz computes moving averages, FFTs, or Kalman filters in firmware for sensor fusion. 128 KB Flash stores configuration profiles and DSP libraries, and 32 KB SRAM buffers time-series sensor frames before host upload. The 5x5 mm VTLA package suits compact wearable sensor pods, while deep-sleep current under 1 uA extends battery life in intermittent-logging applications.
Recommended
Recommended Products Summary
Engineering reference data for PIC32MX250F128C-V/TL — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC32MX250F128C-I/TL | PIC32MX250F128CT-I/TL | PIC32MX250F128C-50I/TL | PIC32MX150F128C-V/TL | PIC32MX230F064C-V/TL |
|---|---|---|---|---|---|---|
| Package | 36-VTLA (5x5) | 36-VTLA (5x5) - same | 36-VTLA (5x5) - same | 36-VTLA (5x5) - same | 36-VTLA (5x5) - same | 36-VTLA (5x5) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| CPU Speed | 40 MHz | 40 MHz - same | 40 MHz - same | 50 MHz (+25%) | 40 MHz - same | 40 MHz - same |
| Flash Memory | 128 KB | 128 KB - same | 128 KB - same | 128 KB - same | 128 KB - same | 64 KB (-50%) |
| SRAM | 32 KB | 32 KB - same | 32 KB - same | 32 KB - same | 32 KB - same | 16 KB (-50%) |
| USB 2.0 FS Device | Yes | Yes | Yes | Yes | No | Yes |
| Temperature Grade | -40C to +105C (V, automotive) | -40C to +85C (I, industrial) | -40C to +85C (I, industrial) | -40C to +85C (I, industrial) | -40C to +105C (V, automotive) | -40C to +105C (V, automotive) |
| AEC-Q100 Qualification | Yes | No | No | No | Yes | Yes |
| Packaging | Tube (TL) | Tube (TL) | Tape & Reel (TR) | Tube (TL) | Tube (TL) | Tube (TL) |
Key Differentiators
- AEC-Q100 qualified with 105C temperature rating (vs PIC32MX250F128C-I/TL)
- Includes USB 2.0 Full-Speed on-chip transceiver (vs PIC32MX150F128C-V/TL)
- Full 128 KB Flash at automotive temperature grade (vs PIC32MX230F064C-V/TL)
Design Notes
Estimated: The 5x5 mm VTLA package dissipates heat primarily through the exposed thermal pad (pin 36). At 40 MHz CPU load drawing ~20 mA from 3.3V, dissipation is approximately 66 mW - well within the package's 35 C/W theta_JA. However, when the USB transceiver is active at full-speed with VBUS connected, total current can rise to 50 mA and the junction temperature should be calculated as T_J = T_A + (P_D x theta_JA). Solder the exposed pad to a continuous ground copper pour of at least 100 mm^2 to keep thermal resistance low; failure to do so will raise theta_JA above 60 C/W and risk AEC-Q100 thermal margin violations above 85C ambient.
Route the USB DP/DM traces as a 90-ohm differential pair with continuous ground reference on the layer immediately below. Keep DP/DM trace length under 50 mm and avoid vias; place the VBUS sense resistor within 5 mm of the VBUS pin. Decouple each VDD pin with a 100 nF ceramic capacitor placed within 2 mm of the pin, and add a bulk 4.7 uF capacitor on the main 3.3V rail. Place the 8 MHz primary oscillator crystal within 5 mm of the OSCI/OSCO pins and guard it with a ground ring; this layout is critical for USB Full-Speed certification.
Do not float the exposed thermal pad on the VTLA package - it MUST be soldered to the PCB ground plane for mechanical, thermal, and electrical reasons. Floating the pad raises theta_JA above spec and may cause the device to overheat during USB enumeration. When migrating code from the I-grade to V-grade variant, verify that the brown-out reset (BOR) and watchdog timer settings remain valid across the wider -40C to +105C range; some low-voltage BOR thresholds require re-tuning for automotive temperature margins. Finally, ensure the VBUS pin is correctly sensed - connecting VBUS directly to VDD bypasses USB host-detection logic and may cause non-compliance with USB 2.0 spec section 7.2.1.
Compliance Information
AEC-Q100 qualified per Microchip automotive grade catalog. RoHS and REACH compliant per Microchip material declaration. Lead-free and halogen-free per Microchip green-compliance datasheet addendum.