PIC32MX250F128D-50I/TL - 50MHz 32-bit MCU 128KB Flash USB | Microchip
MPN: PIC32MX250F128D-50I/TL ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.2 | $6.20 |
| 10 | $5.58 | $55.80 |
| 100 | $4.96 | $496.00 |
| 500 | $4.47 | $2,235.00 |
| 1,000 | $3.98 | $3,980.00 |
PIC32MX250F128D-50I/TL Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory, data memory, and peripherals. The 32-bit MCU class extends 8/16-bit architectures with wider datapaths (32-bit registers/ALU), higher MHz/DMIPS throughput, and richer peripherals (USB, Ethernet, CAN, PMP). The PIC32MX1XX/2XX family targets cost-sensitive embedded applications that need 32-bit performance with PIC peripheral familiarity.
Key features include 0.5 mA/MHz typical active current, MIPS16e code compression for up to 40% smaller code, single-cycle 32x16 and two-cycle 32x32 multiply-accumulate (MAC), and 1 ns input-capture resolution for high-resolution time measurement. Five 16-bit timers/counters, two I2C and two UART modules, a real-time clock, and an integrated temperature sensor round out the analog and digital peripheral set.
Architecturally, the PIC32MX250F128D uses the Harvard-style MIPS32 M4K core with separate Flash and SRAM buses, dual-banked prefetch to mask Flash latency, and PPS remappable peripherals that let designers assign digital functions to almost any I/O - a significant PCB-layout advantage over fixed-pin MCUs.
Typical applications include USB audio devices, low-cost graphics terminals with PMP, capacitive touch user interfaces, and general-purpose 32-bit embedded control. Industrial sensor hubs, USB HID peripherals, and small HMI panels all fit the device's peripheral mix and Flash/SRAM budget.
When designing with the VTLA (TL) package, expose the bottom thermal pad and stitch vias to the ground plane to dissipate switching power from the USB transceiver. The PIC32MX2XX is pin-compatible with PIC32MX1XX variants; choose higher-density parts when more Flash/RAM is required without PCB rework.
This page synthesizes distributor pricing, drop-in pin-compatible alternatives in the same VTLA-44 footprint, and engineering design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for PIC32MX250F128D-50I/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 PIC32MX250F128D-50I/TL (same form factor and footprint) — differing in ADC, Package, Timers, I/O Pins, Core Architecture.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC32MX250F128DT-50I/TL
✅ Drop-In✓ In Stock
$2.74 / Unit
View Datasheet →PIC32MX250F128CT-50I/TL
✅ Drop-In✓ In Stock
$2.61 / Unit
View Datasheet →PIC32MX250F128C-I/TL
✅ Drop-In✓ In Stock
$3.41 / Unit
View Datasheet →PIC32MX150F128D-50I/TL
✅ Drop-In✓ In Stock
$3.85 / Unit
View Datasheet →PIC32MX230F064D-I/TL
✅ Drop-In✓ In Stock
$1.71 / Unit
View Datasheet →PIC32MX250F128D-50I/TL Maximum Ratings & Electrical Characteristics
| Core | MIPS32 M4K 32-bit RISC |
| Maximum CPU Frequency | 50 MHz |
| Performance | 83 DMIPS |
| Flash Program Memory | 128 KB |
| SRAM | 32 KB |
| Operating Voltage (Vdd) | 2.3 V to 3.6 V |
| Operating Temperature | -40C to +85C (industrial) |
| I/O Pins | 34 |
| Package | 44-pin VTLA (6x6 mm) with exposed pad |
| ADC | 13-channel, 10-bit, up to 1.1 Msps |
| USB | USB 2.0 full-speed device/host/OTG |
| I2S/SPI Modules | 2 |
| UART Modules | 2 |
| I2C Modules | 2 |
| Timers | Five 16-bit |
| Peripheral Pin Select (PPS) | Yes |
| Parallel Master Port (PMP) | Yes |
| mTouch Capacitive Touch | Yes |
| Active Current | 0.5 mA/MHz typical |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| Supply Format | Tube |
PIC32MX250F128D-50I/TL Pin Configuration
| Pin 1 | RPB5/PMD5/RB5 — I/O port B bit 5; PPS-mappable; PMP data line 5 |
| Pin 2 | VSS — Ground reference |
| Pin 3 | RPC6/RC6 — I/O port C bit 6; PPS-mappable |
| Pin 4 | RPC7/RC7 — I/O port C bit 7; PPS-mappable |
| Pin 5 | RPC8/RC8 — I/O port C bit 8; PPS-mappable |
| Pin 6 | RPC9/RC9 — I/O port C bit 9; PPS-mappable |
| Pin 7 | VSS — Ground reference |
| Pin 8 | RPB6/PMD6/RB6 — I/O port B bit 6; PPS-mappable; PMP data line 6 |
| Pin 9 | RPB7/PMD7/RB7 — I/O port B bit 7; PPS-mappable; PMP data line 7 |
| Pin 10 | VDD — Positive supply voltage (2.3-3.6 V) |
| Pin 11 | RPB8/RB8 — I/O port B bit 8; PPS-mappable |
| Pin 12 | RPB9/RB9 — I/O port B bit 9; PPS-mappable |
| Pin 13 | RPB10/RB10 — I/O port B bit 10; PPS-mappable |
| Pin 14 | RPB11/RB11 — I/O port B bit 11; PPS-mappable |
| Pin 15 | VSS — Ground reference |
| Pin 16 | RPB12/RB12 — I/O port B bit 12; PPS-mappable |
| Pin 17 | RPB13/RB13 — I/O port B bit 13; PPS-mappable |
| Pin 18 | RPB14/RB14 — I/O port B bit 14; PPS-mappable |
| Pin 19 | RPB15/RB15 — I/O port B bit 15; PPS-mappable |
| Pin 20 | VDD — Positive supply voltage (2.3-3.6 V) |
| Pin 21 | AVDD — Analog positive supply |
| Pin 22 | AVSS — Analog ground reference |
| Pin 23 | AN0/C1IND/RPB0/VREF+/CVREF+/PMA6/RB0 — Analog input 0; comparator input; VREF+; PMA6 |
| Pin 24 | AN1/C1INC/RPB1/VREF-/CVREF-/PMA7/RB1 — Analog input 1; comparator input; VREF-; PMA7 |
| Pin 25 | AN2/C2IND/RPB2/SDA2/PMA8/RB2 — Analog input 2; I2C2 SDA; PMA8 |
| Pin 26 | AN3/C2INC/RPB3/SCL2/PMA9/RB3 — Analog input 3; I2C2 SCL; PMA9 |
| Pin 27 | AN4/C1INA/RPB4/PMA10/RB4 — Analog input 4; PMA10 |
| Pin 28 | AN5/C1INB/RPA0/PMA11/RA0 — Analog input 5; PMA11 |
| Pin 29 | AN6/RPA1/RA1 — Analog input 6 |
| Pin 30 | AN7/RPA2/RA2 — Analog input 7 |
| Pin 31 | AN8/RPA3/RA3 — Analog input 8 |
| Pin 32 | AN9/RPA4/RA4 — Analog input 9 |
| Pin 33 | AN10/CVREF/RPA5/RA5 — Analog input 10; CVREF output |
| Pin 34 | AN11/RPA8/RA8 — Analog input 11 |
| Pin 35 | AN12/RPA9/RA9 — Analog input 12 |
| Pin 36 | VSS — Ground reference |
| Pin 37 | OSC1/CLKI/RC12 — Crystal oscillator input or external clock input |
| Pin 38 | OSC2/CLKO/RC15 — Crystal oscillator output or clock output |
| Pin 39 | D-/RG3/RG3 — USB D- line; PPS-mappable |
| Pin 40 | D+/RG2/RG2 — USB D+ line; PPS-mappable |
| Pin 41 | VBUS — USB VBUS detect input (5 V tolerant) |
| Pin 42 | RPF4/SDA1/RF4 — I2C1 SDA; PPS-mappable |
| Pin 43 | RPF5/SCL1/RF5 — I2C1 SCL; PPS-mappable |
| Pin 44 | RPF6/RF6 — PPS-mappable I/O port F bit 6 |
Typical Applications
PIC32MX250F128D-50I/TL is suitable for 7 applications: USB Audio Device (Headset / DAC Interface), Capacitive Touch User Interface (mTouch), Low-Cost Graphics HMI Terminal (PMP), USB HID Peripheral (Keyboard / Mouse / Gamepad), Industrial Sensor Hub / Data Logger, General-Purpose 32-bit Embedded Control, IoT Edge Node with USB Connectivity.
USB Audio Device (Headset / DAC Interface)
The PIC32MX250F128D-50I/TL fits USB audio designs because it integrates a USB 2.0 full-speed OTG transceiver and two I2S/SPI modules that directly interface to external audio CODECs like the SGTL5000. The 50 MHz MIPS32 M4K core runs USB 1.1 full-speed audio class drivers with adequate headroom at 83 DMIPS, while the 128 KB Flash holds descriptors and DSP code; 32 KB SRAM buffers USB isochronous packets without dropouts. The PPS remap feature keeps I2S bit-clock and word-clock on convenient GPIO pins, simplifying PCB routing.
Recommended
Capacitive Touch User Interface (mTouch)
The PIC32MX250F128D-50I/TL supports Microchip's mTouch capacitive touch library through its Charge Time Measurement Unit (CTMU) and 13-channel 10-bit ADC, enabling button, slider, and proximity sensing with no external touch IC. The 50 MHz core samples touch electrodes at 1 Msps while running the USB stack concurrently, and 128 KB Flash fits full mTouch firmware with room for application code. PPS reassigns CTMU channels to nearly any GPIO, reducing PCB constraints on overlay layout.
Recommended
Low-Cost Graphics HMI Terminal (PMP)
The PIC32MX250F128D-50I/TL drives small parallel-port TFT displays via its Parallel Master Port (PMP), supporting 8-bit data buses to QVGA panels with address latches. The 50 MHz CPU refreshes 320x240 panels at 30+ fps, while 128 KB Flash stores bitmaps and the USB stack for tethered or self-hosted HMI terminals. The VTLA-44 (6x6 mm) footprint suits small industrial panel-mount designs where display data lines are routed to adjacent connectors.
Recommended
USB HID Peripheral (Keyboard / Mouse / Gamepad)
The PIC32MX250F128D-50I/TL is a strong fit for USB HID devices because its USB 2.0 full-speed OTG controller plus 50 MHz MIPS32 M4K core runs HID class drivers with abundant MIPS for scanning matrices and processing HID reports. 128 KB Flash holds custom HID descriptors and macro layers; the VTLA-44 (6x6 mm) package fits inside compact keyboard PCBs with USB-C connectors. PPS remaps UART/I2C peripherals, freeing GPIO for switch matrices and RGB LED PWM channels.
Recommended
Industrial Sensor Hub / Data Logger
The PIC32MX250F128D-50I/TL serves as an industrial sensor hub because its 13-channel 10-bit ADC, two I2C, two UART, and two SPI ports handle multi-sensor arrays concurrently. The 50 MHz core aggregates sensor data at 100 Hz sample rates while storing logs to external SPI Flash via PPS-mapped SPI; 32 KB SRAM buffers raw sensor frames before transmission. The -40C to +85C industrial temperature range meets factory-floor requirements and 128 KB Flash fits protocol stacks like Modbus RTU.
Recommended
General-Purpose 32-bit Embedded Control
The PIC32MX250F128D-50I/TL replaces 8/16-bit PIC MCUs in designs that need 32-bit performance without jumping to ARM Cortex-M, because the MIPS32 M4K core runs at 50 MHz / 83 DMIPS and inherits the PIC ecosystem (MPLAB X, Harmony, ICD programming). 128 KB Flash and 32 KB SRAM suit motor-control loops, multi-protocol bridges, and battery-powered instruments; 0.5 mA/MHz active current and sub-50 uA sleep current balance performance vs efficiency. PPS remaps peripherals, simplifying PCB routing in mixed-signal boards.
Recommended
IoT Edge Node with USB Connectivity
The PIC32MX250F128D-50I/TL fits USB-attached IoT edge nodes because its USB 2.0 full-speed OTG interface handles CDC/HID/MSD class devices while two I2C buses connect to sensors and two UARTs bridge to wireless modules like Bluetooth HCI adapters. The 50 MHz MIPS32 M4K core executes TLS-style stacks (wolfSSL) at usable throughput, and 128 KB Flash stores certificate bundles; 32 KB SRAM supports concurrent TLS handshakes. The VTLA-44 (6x6 mm) package suits compact edge devices with USB-C connectors.
Recommended
Recommended Products Summary
Engineering reference data for PIC32MX250F128D-50I/TL — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC32MX250F128DT-50I/TL | PIC32MX250F128CT-50I/TL | PIC32MX250F128C-I/TL | PIC32MX150F128D-50I/TL | PIC32MX230F064D-I/TL |
|---|---|---|---|---|---|---|
| Package | 44-pin VTLA (6x6 mm) | 44-pin VTLA (6x6 mm) - same | 44-pin VTLA (6x6 mm) - same | 44-pin VTLA (6x6 mm) - same | 44-pin VTLA (6x6 mm) - same | 44-pin VTLA (6x6 mm) - same |
| Brand | Microchip Technology | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same |
| Maximum CPU Frequency | 50 MHz | 50 MHz | 50 MHz | 40 MHz | 50 MHz | 40 MHz |
| Flash Program Memory | 128 KB | 128 KB | 128 KB | 128 KB | 128 KB | 64 KB (-50%) |
| SRAM | 32 KB | 32 KB | 32 KB | 32 KB | 32 KB | 16 KB (-50%) |
| USB 2.0 OTG | Yes | Yes | Yes | Yes | No | Yes |
| Parallel Master Port (PMP) | Yes | Yes | Yes | Yes | No | Yes |
| I2S/SPI Modules | 2 | 2 | 2 | 2 | 0 | 2 |
| Operating 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 |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
Key Differentiators
- Tape-and-reel supply option in identical silicon (vs PIC32MX250F128DT-50I/TL)
- Lower-cost pin-compatible variant with reduced clock speed (vs PIC32MX250F128C-I/TL)
- Pin-compatible PIC32MX150 family variant without USB (vs PIC32MX150F128D-50I/TL)
- Lower-memory pin-compatible PIC32MX230 option (vs PIC32MX230F064D-I/TL)
Design Notes
Place a 10 uF bulk tantalum or ceramic capacitor plus a 0.1 uF ceramic decoupling capacitor on each VDD pin and a separate pair on AVdd. The PIC32MX1XX/2XX family datasheet (DS60001168L) requires Vdd and AVdd tied to the same supply unless the analog section uses a separate filtered rail. USB designs must derive a clean 48 MHz clock with total jitter below 1 ns for full-speed compliance.
The VTLA-44 (TL) package exposes a center thermal pad that must be soldered to a ground copper pour with multiple thermal vias to limit junction temperature. At 50 MHz full CPU load (typical 0.5 mA/MHz active current), power dissipation is approximately 90 mW - well within the VTLA thermal envelope, but USB full-speed transmission bursts add 50 mA on the VBUS rail. Stencil apertures for the thermal pad should be split into multiple openings per IPC-7527 to reduce voiding.
Route the USB D+ and D- differential pair as a 90 ohm impedance-matched pair with length matching to within 150 mil, and add 27-33 ohm series resistors plus a TVS array like USBLC6-2SC6 near the connector. The VTLA-44 (6x6 mm) package places the USB pins on pins 39-41 - keep the trace stubs to the USB transceiver under 2 mm to meet signal-integrity requirements.
Do not skip configuration of the Peripheral Pin Select (PPS) registers before using remappable peripherals - PPS defaults disable most digital functions on pins. Per the PIC32MX1XX/2XX datasheet, all I2C, UART, SPI, and timer peripherals require explicit PPS unlock sequence (unlock = 0x55 + 0xAA sequence, then register write) before they will operate. Failing to perform this sequence is the most common firmware bring-up mistake.
Compliance Information
RoHS3 compliant per Microchip product page. Not AEC-Q100 qualified - use automotive-grade PIC32 variants for vehicle applications. Tube packaging; tape-and-reel variant available as PIC32MX250F128DT-50I/TL.
