PIC32MX250F128CT-V/TL - 32-bit MCU 128KB Flash 40MHz | Microchip
MPN: PIC32MX250F128CT-V/TL ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.95 | $4.95 |
| 10 | $4.42 | $44.20 |
| 100 | $3.95 | $395.00 |
| 500 | $3.55 | $1,775.00 |
| 1,000 | $3.18 | $3,180.00 |
PIC32MX250F128CT-V/TL Overview
A PIC32MX microcontroller is a 32-bit RISC MCU from Microchip's PIC32 family, built on the MIPS32 M4K core. It sits within the broader taxonomy of: 32-bit microcontroller -> microcontroller unit (MCU) -> embedded processor -> semiconductor. PIC32MX devices are commonly used when designers outgrow 8-bit PIC microcontrollers but want to retain the MPLAB X IDE and Harmony ecosystem, offering deterministic interrupt latency and 83 DMIPS performance.
Key features of the PIC32MX250F128CT-V/TL include five 16-bit timers, a 16-channel 10-bit ADC, two I2S/SPI modules for codec interfacing, Peripheral Pin Select (PPS), a Charge Time Measurement Unit (CTMU) for capacitive touch, and four DMA channels. Internal RC oscillator and multiple low-power modes (Idle, Sleep) reduce active current to 0.5 mA/MHz.
The architecture combines a single-cycle MIPS32 M4K core with separate PLLs for the CPU and USB clock domains, enabling a 48 MHz USB reference while the core runs at 40 MHz. Hardware DMA and PPS decouple peripheral routing from fixed pin assignments, allowing designers to remap UART/SPI/I2C signals on the fly.
Typical applications include USB audio peripherals (USB headphones, USB speakers), graphics interfaces via PMP, capacitive touch human-machine interfaces (HMIs), automotive body and infotainment ECUs, and industrial sensor hubs. The AEC-Q100 grade extends use into under-the-hood and cabin electronics where temperature ranges of -40C to +125C are required.
When designing with this device, use MPLAB X IDE with the XC32 compiler and configure PPS before assigning peripheral signals to physical pins. Provide a 12 MHz or 48 MHz crystal for USB-accurate full-speed operation, and tie the exposed pad (EP) to a solid ground copper pour to meet the 31 C/W theta-JA thermal target.
This page consolidates AEC-Q100 automotive grade information, VQFN-36 footprint VTLA package dimensions, drop-in alternatives, and pricing benchmarks that streamline procurement decisions for engineers sourcing 32-bit microcontrollers with USB and PMP.
Drop-in alternatives for PIC32MX250F128CT-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 PIC32MX250F128CT-V/TL (same form factor and footprint) — differing in ADC, Package, USB, Core Architecture, Timers.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC32MX250F128CT-I/TL
✅ Drop-In✓ In Stock
$4.05 / Unit
View Datasheet →PIC32MX250F128C-I/TL
✅ Drop-In✓ In Stock
$3.41 / Unit
View Datasheet →PIC32MX250F128C-50I/TL
✅ Drop-In✓ In Stock
$3.85 / Unit
View Datasheet →PIC32MX150F128CT-V/TL
✅ Drop-In✓ In Stock
$3.05 / Unit
View Datasheet →PIC32MX150F128CT-I/TL
✅ Drop-In✓ In Stock
$2.41 / Unit
View Datasheet →PIC32MX150F128C-V/TL
✅ Drop-In✓ In Stock
$3.5 / Unit
View Datasheet →PIC32MX250F128CT-V/TL Maximum Ratings & Electrical Characteristics
| Core Processor | MIPS32 M4K |
| Core Size | 32-bit single-core |
| Maximum Clock Speed | 40 MHz |
| Program Memory Type | FLASH |
| Program Memory Size | 128 KB (128K x 8) |
| RAM Size | 32 KB (32K x 8) |
| Supply Voltage (Vcc/Vdd) | 2.3 V to 3.6 V |
| Number of I/O | 19 (some sources list 23) |
| Package / Case | 36-VTLA Exposed Pad (5x5 mm) |
| Connectivity | I2C, IrDA, LINbus, PMP, SPI, UART/USART, USB OTG |
| Peripherals | Brown-out Detect/Reset, DMA, I2S, POR, PWM, WDT |
| ADC | 10-bit, up to 16 channels |
| Data Converters | A/D 16x10b |
| Oscillator Type | Internal |
| Operating Temperature | -40C to +125C (Automotive, AEC-Q100 Grade 3 - V suffix) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| AEC-Q100 Qualification | Qualified (V operating temperature range) |
| Packaging | Tape & Reel (TR) |
| DMA Channels | 4 |
| Timers | 5 x 16-bit |
PIC32MX250F128CT-V/TL Pin Configuration
| Pin 1 | VSS — Ground reference |
| Pin 2 | RD0/PMD0 — I/O / Parallel Master Port data 0 |
| Pin 3 | RD1/PMD1 — I/O / Parallel Master Port data 1 |
| Pin 4 | RD2/PMD2 — I/O / Parallel Master Port data 2 |
| Pin 5 | RD3/PMD3 — I/O / Parallel Master Port data 3 |
| Pin 6 | RD4/PMD4 — I/O / Parallel Master Port data 4 |
| Pin 7 | RD5/PMD5 — I/O / Parallel Master Port data 5 |
| Pin 8 | RD6/PMD6 — I/O / Parallel Master Port data 6 |
| Pin 9 | RD7/PMD7 — I/O / Parallel Master Port data 7 |
| Pin 10 | RB0/PGED1 — I/O / Programming Data pin 1 |
| Pin 11 | RB1/PGEC1 — I/O / Programming Clock pin 1 |
| Pin 12 | RB2 — I/O |
| Pin 13 | RB3 — I/O |
| Pin 14 | VBUS — USB VBUS detect |
| Pin 15 | VUSB — USB 3.3V regulator output |
| Pin 16 | D- — USB data minus |
| Pin 17 | D+ — USB data plus |
| Pin 18 | RC1 — I/O |
| Pin 19 | RC2 — I/O |
| Pin 20 | RC3 — I/O |
| Pin 21 | RC4 — I/O |
| Pin 22 | OSC1/RC12 — Crystal oscillator input |
| Pin 23 | OSC2/RC15 — Crystal oscillator output |
| Pin 24 | VDD — Positive supply voltage |
| Pin 25 | RB4 — I/O |
| Pin 26 | RB5 — I/O |
| Pin 27 | RB6 — I/O |
| Pin 28 | RB7 — I/O |
| Pin 29 | RA0 — I/O |
| Pin 30 | RA1 — I/O |
| Pin 31 | RA2 — I/O |
| Pin 32 | RA3 — I/O |
| Pin 33 | RA4 — I/O |
| Pin 34 | RA5 — I/O |
| Pin 35 | VSS — Ground reference |
| Pin 36 | EP — Exposed thermal pad - must be soldered to ground pour |
Typical Applications
PIC32MX250F128CT-V/TL is suitable for 6 applications: USB Audio Peripherals (USB Headphones / Speakers), Capacitive Touch HMI Panels, Automotive Infotainment Body ECUs, Graphics Display Controllers (PMP Interface), Industrial Sensor Hubs, USB Human Interface Devices (HID Keyboards / Mice / Gamepads).
USB Audio Peripherals (USB Headphones / Speakers)
The PIC32MX250F128CT-V/TL's integrated USB 2.0 Full-Speed OTG controller, two I2S interfaces, and dedicated USB clock PLL make it a strong fit for USB headphone, USB speaker, and USB microphone designs. With 128 KB Flash and 32 KB RAM, the MCU can store USB audio class descriptors, I2S codec configuration, and real-time audio sample buffers without external memory. The PMP peripheral is not required here, freeing I/O for additional audio control buttons. AEC-Q100 Grade 3 qualification allows automotive in-cabin USB audio docking modules. Typical implementation uses a 12 MHz crystal and the internal 96 MHz PLL to drive USB at 48 MHz while the core runs at 40 MHz.
Recommended
Capacitive Touch HMI Panels
The PIC32MX250F128CT-V/TL's on-chip Charge Time Measurement Unit (CTMU) and Peripheral Pin Select (PPS) allow designers to assign 19 general-purpose I/O pins as capacitive-touch channels without external touch controllers, reducing BOM cost in HMI panels. The 32 KB SRAM buffers raw touch scanning and debounce state, while 128 KB Flash holds the touch UI firmware and graphics descriptors. The 10-bit ADC with up to 16 channels can be used for backlight dimming or proximity sensing. AEC-Q100 qualification makes this part suitable for automotive dashboard touch buttons and rear-seat entertainment HMIs. The 36-VTLA 5x5 mm footprint supports compact panel designs behind glass.
Recommended
Automotive Infotainment Body ECUs
The PIC32MX250F128CT-V/TL's AEC-Q100 Grade 3 certification and -40C to +125C operating temperature range support under-dashboard and cabin body ECU applications including HVAC controls, lighting modules, and seat control interfaces. The integrated LINbus peripheral connects to automotive body networks without external transceivers, while IrDA enables diagnostic IR interfaces. The 32 KB SRAM and 128 KB Flash accommodate CAN/LIN stacks and J1939 protocol layers. The small 36-VTLA 5x5 mm package fits tight module enclosures. Designers should verify PPAP documentation with the supplier.
Recommended
Graphics Display Controllers (PMP Interface)
The PIC32MX250F128CT-V/TL integrates a Parallel Master Port (PMP) capable of driving small TFT LCDs in 8-bit or 16-bit modes, supporting 8080/6800 protocols. Combined with the DMA controller and 32 KB SRAM, the MCU can refresh 320x240 QVGA graphics panels at sufficient frame rates without external graphics controllers. 128 KB Flash stores graphics fonts and simple UI assets. The PPS peripheral allows flexible assignment of display data and control lines. Automotive AEC-Q100 qualification extends use to gauge clusters and rear-seat entertainment displays. Real-world designs pair this MCU with 1.5-inch to 3.5-inch small TFTs in industrial HMIs.
Recommended
Industrial Sensor Hubs
The PIC32MX250F128CT-V/TL's 10-bit ADC with up to 16 channels, two I2C, two SPI, and UART interfaces make it well-suited as a multi-sensor hub aggregating temperature, pressure, and motion sensor data in industrial control cabinets. The 32 KB SRAM buffers sensor fusion calculations while the 128 KB Flash holds the application code and calibration tables. The AEC-Q100 temperature grade is overkill for indoor industrial use but offers thermal margin in outdoor or factory-floor environments. The 4-channel DMA offloads repetitive SPI/I2C transfers from the core, keeping the CPU available for control loops. The 36-VTLA package fits compact DIN-rail modules.
Recommended
USB Human Interface Devices (HID Keyboards / Mice / Gamepads)
The PIC32MX250F128CT-V/TL's USB OTG Full-Speed controller, combined with the on-chip DMA and 32 KB SRAM, can support USB HID class devices such as keyboards, mice, and game controllers. The 128 KB Flash accommodates HID descriptor tables, key-mapping firmware, and consumer-control commands. The AEC-Q100 qualification extends to automotive head-unit controller interfaces. The exposed-pad VTLA package simplifies single-sided PCB construction for low-cost consumer peripherals. PPS allows designers to assign SPI scan-matrix signals flexibly across the 19 GPIO pins.
Recommended
Recommended Products Summary
Engineering reference data for PIC32MX250F128CT-V/TL — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC32MX250F128CT-I/TL | PIC32MX250F128C-I/TL | PIC32MX250F128C-50I/TL | PIC32MX150F128CT-V/TL | PIC32MX150F128CT-I/TL | PIC32MX150F128C-V/TL |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 36-VTLA Exposed Pad (5x5) | 36-VTLA Exposed Pad (5x5) - same | 36-VTLA Exposed Pad (5x5) - same | 36-VTLA Exposed Pad (5x5) - same | 36-VTLA Exposed Pad (5x5) - same | 36-VTLA Exposed Pad (5x5) - same | 36-VTLA Exposed Pad (5x5) - same |
| Core Processor | MIPS32 M4K | MIPS32 M4K | MIPS32 M4K | MIPS32 M4K | MIPS32 M4K | MIPS32 M4K | MIPS32 M4K |
| Max Clock Speed | 40 MHz | 40 MHz | 40 MHz | 50 MHz | 40 MHz | 40 MHz | 40 MHz |
| Flash Memory | 128 KB | 128 KB | 128 KB | 128 KB | 128 KB | 128 KB | 128 KB |
| RAM Size | 32 KB | 32 KB | 32 KB | 32 KB | 32 KB | 32 KB | 32 KB |
| Operating Temperature | -40C to +125C (Automotive V) | -40C to +85C (Industrial I) | -40C to +85C (Industrial I) | -40C to +85C (Industrial I) | -40C to +125C (Automotive V) | -40C to +85C (Industrial I) | -40C to +125C (Automotive V) |
| USB OTG | Yes (USB 2.0 FS) | Yes (USB 2.0 FS) | Yes (USB 2.0 FS) | Yes (USB 2.0 FS) | No (PIC32MX150 family) | No (PIC32MX150 family) | No (PIC32MX150 family) |
| AEC-Q100 Qualified | Yes | No (industrial) | No (industrial) | No (industrial) | Yes | No (industrial) | Yes |
| Supply Voltage | 2.3 V to 3.6 V | 2.3 V to 3.6 V | 2.3 V to 3.6 V | 2.3 V to 3.6 V | 2.3 V to 3.6 V | 2.3 V to 3.6 V | 2.3 V to 3.6 V |
Key Differentiators
- Automotive Grade 3 AEC-Q100 with -40C to +125C V temperature range (vs PIC32MX250F128CT-I/TL)
- Integrated USB 2.0 Full-Speed OTG with dedicated USB PLL (vs PIC32MX150F128CT-V/TL)
- Compact 36-VTLA 5x5 mm with 19 GPIO via Peripheral Pin Select (vs PIC32MX230F128H-V/PT (64-pin TQFP))
Design Notes
The 36-VTLA package has an exposed thermal pad (EP) that MUST be soldered to a grounded copper pour of at least 25 mm^2 (per Microchip AN-207) to achieve the datasheet's 31 C/W theta-JA. Failing to connect EP to ground can cause thermal runaway in the automotive +125C operating range. Place the EP pour on the top layer directly beneath the IC and stitch it to internal ground with at least 9 thermal vias (0.3 mm hole, 0.6 mm pad). Place a 10 uF bulk + 0.1 uF high-frequency bypass pair within 3 mm of each VDD pin.
For USB full-speed operation at 12 Mbps, the PIC32MX250F128CT-V/TL requires an accurate 48 MHz USB clock derived from a 12 MHz or 48 MHz fundamental-mode crystal (typically 20 ppm tolerance). Using the internal RC oscillator for USB may fail USB-IF compliance tests due to frequency drift. PPS configuration must be completed before the first peripheral use; calling PPSUnlock/RPMap APIs without unlocking PPS at DEVCFG2 can cause silent peripheral failures. Avoid using D+ and D- as general-purpose I/O since they share special USB functions.
Route the USB D+ and D- traces as a 90-ohm differential pair with length matching within 2 mm and keep them over an unbroken ground reference plane. Avoid crossing power plane splits beneath the USB traces. Place the VBUS sense voltage divider within 5 mm of the VBUS pin. Crystal traces (OSC1/OSC2) should be kept under 5 mm total length with a grounded guard ring to prevent injection of harmonic noise into the USB PLL. The exposed pad and VSS pins should connect to the same ground plane without inductive choke.
Estimated: At 40 MHz active current of 0.5 mA/MHz at 3.3 V, the PIC32MX250F128CT-V/TL dissipates approximately 66 mW. Even in the +125C automotive ambient, junction temperature rise over ambient is approximately 2.0 C with the EP properly soldered to a 25 mm^2 ground pour (theta-JA = 31 C/W). This provides adequate thermal margin for AEC-Q100 Grade 3. In USB-suspend mode, current drops below 1.5 mA total for the device, allowing battery-backed designs to meet standby targets.
Compliance Information
AEC-Q100 Grade 3 qualified per the V temperature suffix. RoHS and REACH compliance per Microchip product declaration. Halogen-free status not explicitly stated in retrieved datasheet excerpts.
