PIC32MX150F128D-50I/ML - 50MHz 32-bit MCU 128KB Flash | Microchip
MPN: PIC32MX150F128D-50I/ML ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.62 | $4.62 |
| 10 | $4.2 | $42.00 |
| 100 | $3.78 | $378.00 |
| 500 | $3.42 | $1,710.00 |
| 1,000 | $3.05 | $3,050.00 |
PIC32MX150F128D-50I/ML Overview
A 32-bit microcontroller (MCU) is a programmable processor that integrates a CPU core, memory, and peripherals on a single silicon die; PIC32MX1XX/2XX devices use the MIPS32 M4K core, placing them in the broader taxonomy of 32-bit microcontrollers -> microcontrollers -> embedded processors -> semiconductors. PIC32MX parts are widely adopted for cost-sensitive 32-bit designs where ARM Cortex-M parts are over-specified.
Key features include two I2S/SPI modules for codec and serial audio, Peripheral Pin Select (PPS) for flexible signal routing, a Parallel Master Port (PMP) for graphics and external memory interfaces, a Charge Time Measurement Unit (CTMU) supporting mTouch capacitive touch sensing with 1 ns resolution, on-chip temperature measurement, and USB 2.0 full-speed device/host/OTG. The part operates from 2.5 V or 3.3 V with less than 0.5 mA/MHz active current consumption, suiting portable and USB-powered designs.
Architecturally, the M4K core offers single-cycle hardware multiply/divide and a 5-stage pipeline, providing deterministic interrupt latency. The 128 KB Flash and 32 KB SRAM are accessible through the unified 32-bit bus, while the PMP module can address up to 16 MB of external memory in master mode - useful for graphics and audio buffer extensions.
Typical applications include USB audio devices (headsets, dongles, MIDI controllers), capacitive touch user interfaces (mTouch sliders and buttons), low-cost graphics HMI with PMP-connected TFT panels, industrial control front-ends with USB connectivity, and portable consumer electronics requiring 32-bit math without ARM licensing overhead.
When designing with this device, plan I/O carefully: PPS lets remap most digital peripherals to alternate pins, but analog and oscillator pins are fixed. Use the exposed pad (EP) of the QFN-44 package as the primary thermal and ground return path - it must be soldered to a continuous copper pour for rated performance.
This page synthesizes DigiKey distributor pricing, Microchip family drop-in alternatives from the same PIC32MX1XX/2XX series, and practical design notes - information beyond the manufacturer datasheet cover sheet.
Drop-in alternatives for PIC32MX150F128D-50I/ML — 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 PIC32MX150F128D-50I/ML (same form factor and footprint) — differing in Package, ADC, I/O Pins, Operating Temperature Range, Maximum CPU Speed.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC32MX150F128DT-50I/ML
✅ Drop-In✓ In Stock
$2.69 / Unit
View Datasheet →PIC32MX150F128D-50I/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX150F128B-I/ML
✅ Drop-In✓ In Stock
$3.3 / Unit
View Datasheet →PIC32MX130F256D-50I/ML
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX170F256D-50I/ML
✅ Drop-In✓ In Stock
$2.74 / Unit
View Datasheet →PIC32MX150F128C-50I/TL
✅ Drop-In✓ In Stock
$2.5 / Unit
View Datasheet →PIC32MX150F128D-50I/ML Maximum Ratings & Electrical Characteristics
| Core | MIPS32 M4K 32-bit RISC |
| Maximum CPU Speed | 50 MHz |
| Program Flash Memory | 128 KB |
| SRAM | 32 KB |
| Operating Voltage | 2.5 V or 3.3 V |
| Package | 44-pin QFN (ML) 8x8 mm with exposed pad |
| Active Current Consumption | < 0.5 mA/MHz |
| Operating Temperature Range | -40C to +85C (Industrial -I grade) |
| USB | USB 2.0 Full-Speed Device/Host/OTG |
| I2S/SPI Modules | 2 |
| Peripheral Pin Select (PPS) | Yes |
| Parallel Master Port (PMP) | Yes |
| CTMU (Charge Time Measurement Unit) | Yes (1 ns resolution) |
| mTouch Capacitive Touch Support | Yes |
| On-chip Temperature Sensor | Yes |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
PIC32MX150F128D-50I/ML Pin Configuration
| Pin 1 | RPB0/AN0/ULPWU — GPIO RB0 / Analog input 0 / Ultra-low-power wake-up |
| Pin 2 | RPB1/AN1/C1INC/C2INC — GPIO RB1 / Analog input 1 / Comparator 1/2 increment input |
| Pin 3 | RPB2/AN2/C1IND/C2IND — GPIO RB2 / Analog input 2 / Comparator 1/2 decrement input |
| Pin 4 | RPB3/AN3/C2INA — GPIO RB3 / Analog input 3 / Comparator 2 input A |
| Pin 5 | VREF+/CVREF+/AN4/RPB4 — Voltage reference + / Comparator voltage reference + / Analog input 4 / GPIO RB4 |
| Pin 6 | VREF-/CVREF-/AN5/RB5 — Voltage reference - / Comparator voltage reference - / Analog input 5 / GPIO RB5 |
| Pin 7 | AN6/RPB6/RPC0 — Analog input 6 / GPIO RB6 / GPIO RC0 |
| Pin 8 | AN7/RPB7/RPC1 — Analog input 7 / GPIO RB7 / GPIO RC1 |
| Pin 9 | AN8/RPB8/RPC2 — Analog input 8 / GPIO RB8 / GPIO RC2 |
| Pin 10 | AN9/RPB9/RPC3 — Analog input 9 / GPIO RB9 / GPIO RC3 |
| Pin 11 | TMS/RPA0 — JTAG TMS / GPIO RA0 |
| Pin 12 | TCK/RPA1 — JTAG TCK / GPIO RA1 |
| Pin 13 | TDI/RPA2 — JTAG TDI / GPIO RA2 |
| Pin 14 | TDO/RPA3 — JTAG TDO / GPIO RA3 |
| Pin 15 | TRST/RPA4 — JTAG TRST / GPIO RA4 |
| Pin 16 | VBUS — USB VBUS sense input |
| Pin 17 | VDD — Positive supply voltage (2.5 V or 3.3 V) |
| Pin 18 | D+ — USB D+ data line |
| Pin 19 | D- — USB D- data line |
| Pin 20 | VSS — Ground reference |
| Pin 21 | RPC4/PMA0 — GPIO RC4 / PMP Address bit 0 |
| Pin 22 | RPC5/PMA1 — GPIO RC5 / PMP Address bit 1 |
| Pin 23 | RPC6/PMA2 — GPIO RC6 / PMP Address bit 2 |
| Pin 24 | RPC7/PMA3 — GPIO RC7 / PMP Address bit 3 |
| Pin 25 | RPC8/PMA4 — GPIO RC8 / PMP Address bit 4 |
| Pin 26 | RPC9/PMA5 — GPIO RC9 / PMP Address bit 5 |
| Pin 27 | VSS — Ground reference |
| Pin 28 | OSC1/CLKI/RC12 — Crystal oscillator input 1 / External clock input / GPIO RC12 |
| Pin 29 | OSC2/CLKO/RC15 — Crystal oscillator output 2 / External clock output / GPIO RC15 |
| Pin 30 | RPD0/PMD0 — GPIO RD0 / PMP Data bit 0 |
| Pin 31 | RPD1/PMD1 — GPIO RD1 / PMP Data bit 1 |
| Pin 32 | RPD2/PMD2 — GPIO RD2 / PMP Data bit 2 |
| Pin 33 | RPD3/PMD3 — GPIO RD3 / PMP Data bit 3 |
| Pin 34 | RPD4/PMD4 — GPIO RD4 / PMP Data bit 4 |
| Pin 35 | RPD5/PMD5 — GPIO RD5 / PMP Data bit 5 |
| Pin 36 | RPD6/PMD6 — GPIO RD6 / PMP Data bit 6 |
| Pin 37 | RPD7/PMD7 — GPIO RD7 / PMP Data bit 7 |
| Pin 38 | RPD8/PMD8 — GPIO RD8 / PMP Data bit 8 |
| Pin 39 | RPD9/PMD9 — GPIO RD9 / PMP Data bit 9 |
| Pin 40 | RPD10/PMD10 — GPIO RD10 / PMP Data bit 10 |
| Pin 41 | RPD11/PMD11 — GPIO RD11 / PMP Data bit 11 |
| Pin 42 | RPD12/PMD12 — GPIO RD12 / PMP Data bit 12 |
| Pin 43 | RPD13/PMD13 — GPIO RD13 / PMP Data bit 13 |
| Pin 44 | RPD14/PMD14 — GPIO RD14 / PMP Data bit 14 |
Typical Applications
PIC32MX150F128D-50I/ML is suitable for 7 applications: USB Audio Headsets and Dongles, Capacitive Touch User Interfaces (mTouch), Low-Cost Graphics HMI with TFT Panels, USB Industrial Control Front-Ends, MIDI Controllers and USB-MIDI Devices, Portable Consumer Electronics with USB Charging, USB HID Peripherals (Keyboards, Mice, Custom Input Devices).
USB Audio Headsets and Dongles
The PIC32MX150F128D-50I/ML is well-suited to USB audio peripherals thanks to its on-chip USB 2.0 Full-Speed Device/Host/OTG controller with integrated transceiver and 3.3 V regulator. The two I2S/SPI modules connect directly to external audio codecs such as the Microchip LAN/WLAN audio bridge ICs or third-party codecs like the SGTL5000, while the 50 MHz MIPS M4K core handles USB isochronous transfers and audio buffering without overrun. The 32 KB SRAM is sufficient for typical 16-bit/48 kHz stereo streams with headroom for mixing. Total BOM stays low because no external USB PHY is required.
Recommended
Capacitive Touch User Interfaces (mTouch)
The on-chip CTMU provides 1 ns time measurement resolution, allowing the PIC32MX150F128D-50I/ML to implement Microchip's mTouch capacitive touch library for buttons, sliders, and proximity sensors without external touch ICs. Peripheral Pin Select (PPS) lets the designer remap touch channels to virtually any GPIO, simplifying PCB layout for irregular panel shapes. The 50 MHz core runs the touch scan loop and on-chip temperature compensation in real time, suiting appliance front panels, industrial HMIs, and consumer electronics. PPS also lets the same firmware support multiple board revisions without code changes.
Recommended
Low-Cost Graphics HMI with TFT Panels
The PIC32MX150F128D-50I/ML includes a Parallel Master Port (PMP) that interfaces directly to 8/16-bit TFT LCD panels and external memory, enabling cost-effective graphical HMIs without an external graphics controller. The 50 MHz core drives QVGA (320x240) panels at 30+ FPS using Microchip's MLA graphics library, while 32 KB SRAM holds the active framebuffer for small panels. Combined with mTouch and USB, the same chip powers appliance, instrument, and industrial-control front panels. Lower BOM cost versus ARM Cortex-M parts with equivalent peripherals is the key advantage.
Recommended
USB Industrial Control Front-Ends
Industrial sensor hubs and USB-connected controllers benefit from the PIC32MX150F128D-50I/ML's combination of USB 2.0 Full-Speed, multiple UART/I2C/SPI peripherals, 10-bit ADC (per family datasheet), and industrial -40C to +85C operating range. The 50 MHz MIPS M4K core processes sensor data, runs control loops, and maintains the USB link concurrently. CTMU supports high-resolution timing for pulse-counting flow meters or optical encoders. The QFN-44 package with exposed pad provides robust thermal and EMI performance in factory environments.
Recommended
MIDI Controllers and USB-MIDI Devices
USB MIDI class-compliant devices such as foot controllers, pad controllers, and keyboard controllers are a strong fit for the PIC32MX150F128D-50I/ML thanks to its USB 2.0 Full-Speed and ample GPIO exposed through PPS. The 50 MHz core handles USB-MIDI message parsing at full bandwidth, while the 128 KB Flash stores complex sysex profiles and firmware updates. CTMU enables capacitive velocity-sensitive pads and sliders. The industrial temperature grade allows use in stage and touring equipment without derating.
Recommended
Portable Consumer Electronics with USB Charging
The PIC32MX150F128D-50I/ML's sub-0.5 mA/MHz active current consumption, plus full USB 2.0 device support, makes it a fit for portable consumer devices such as fitness trackers, smart pens, and handheld instruments that charge over USB. The 2.5 V / 3.3 V core voltage matches single-cell Li-ion / Li-polymer chemistries via a low-dropout regulator. mTouch sensing and on-chip temperature measurement support user interface and battery safety features. The compact QFN-44 8x8 mm footprint suits thin-form-factor enclosures.
Recommended
USB HID Peripherals (Keyboards, Mice, Custom Input Devices)
The PIC32MX150F128D-50I/ML's USB 2.0 Full-Speed device capability, CTMU-based capacitive sensing, and PPS flexibility enable custom USB HID peripherals such as programmable keyboards, ergonomic mice, and bespoke input panels. The 50 MHz MIPS M4K core supports advanced firmware features such as macro recording and per-key RGB control without external logic. mTouch reduces part count for capacitive scroll wheels and gesture pads. Industrial temperature grade supports gaming peripheral, KVM, and professional tool markets.
Recommended
Recommended Products Summary
Engineering reference data for PIC32MX150F128D-50I/ML — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC32MX150F128DT-50I/ML | PIC32MX150F128D-50I/PT | PIC32MX150F128B-I/ML | PIC32MX130F256D-50I/ML | PIC32MX170F256D-50I/ML |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-QFN (ML) 8x8 mm | 44-QFN (ML) 8x8 mm - same | 44-TQFP (PT) 10x10 mm - same pin count | 44-QFN (ML) 8x8 mm - same | 44-QFN (ML) 8x8 mm - same | 44-QFN (ML) 8x8 mm - same |
| Maximum CPU Speed | 50 MHz | 50 MHz | 50 MHz | 40 MHz | 50 MHz | 50 MHz |
| Program Flash Memory | 128 KB | 128 KB | 128 KB | 128 KB | 256 KB | 256 KB |
| SRAM | 32 KB | 32 KB | 32 KB | 32 KB | 64 KB | 64 KB |
| USB 2.0 FS | Yes (Device/Host/OTG) | Yes (Device/Host/OTG) | Yes (Device/Host/OTG) | No | Yes (Device/Host/OTG) | Yes (Device/Host/OTG) |
| Peripheral Pin Select (PPS) | Yes | Yes | Yes | Yes | Yes | Yes |
| Parallel Master Port (PMP) | Yes | Yes | Yes | Yes | Yes | Yes |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
| Lifecycle Status | Active | Active | Active | Active | Active | Active |
Key Differentiators
- On-chip USB 2.0 Full-Speed transceiver with integrated 3.3 V regulator (vs PIC32MX150F128B-I/ML)
- Tape-and-reel packaging variant for automated production (vs PIC32MX150F128D-50I/ML (this part, tube))
- Higher memory upgrade in identical QFN-44 footprint (vs PIC32MX170F256D-50I/ML)
- Peripheral Pin Select (PPS) flexibility (vs Fixed-pin PIC microcontrollers)
Design Notes
The 44-pin QFN package with exposed pad dissipates primarily through its underside thermal pad. Solder the EP to a continuous copper pour (minimum 1 square inch on the top layer with thermal vias to inner ground planes) to keep junction temperature within the -40C to +85C industrial range. Estimated: at 50 MHz full CPU load with peripherals active, typical core current is 25 mA at 3.3 V (0.083 W) - well within the package's thermal envelope - but adding USB and CTMU scan loops can push total consumption higher.
Decouple VDD with a 100 nF ceramic capacitor placed within 3 mm of each VDD pin and a bulk 10 uF tantalum or ceramic close to the highest-current VDD pin. Place the USB D+/D- traces as a 90-ohm differential pair (per USB 2.0 spec) with length matching within 2 mm. Keep the 12 MHz crystal traces short and symmetric, and provide a guard ring around the crystal traces tied to ground to reduce EMI.
PPS reassigns most digital peripherals to alternate pins but does NOT work on analog, oscillator, or fixed-function pins (e.g., VBUS, D+, D-, OSC1, OSC2). Always consult the PIC32MX1XX/2XX family pinout table before PCB layout. JTAG pins are multiplexed with GPIO and are disabled by default - if JTAG is not used, configure the pins as GPIO with appropriate pull-downs to avoid floating inputs.
Route the Parallel Master Port (PMP) data and address traces with controlled impedance (50 ohm single-ended) and length-match within 5 mm for reliable operation at full PMP bus speeds. Keep analog input traces (AN0-AN9) short and away from switching signals. Use a separate analog ground island for ADC reference and analog supply pins, stitched to the main ground at a single point near the QFN exposed pad.
USB 2.0 Full-Speed signal integrity requires 90-ohm differential impedance on D+/D-, with a common-mode choke or ferrite bead recommended near the USB connector for EMI. Match trace lengths to within 150 mil (about 4 mm) per the USB 2.0 specification. The internal USB transceiver pulls D+/D- to 3.3 V through internal resistors - external 15 kohm pull-downs on D+ and D- are NOT required for bus-powered devices, per the Microchip datasheet.
Compliance Information
RoHS compliant per Microchip product page. Industrial -40C to +85C operating range but not AEC-Q100 qualified - not recommended for automotive under-the-hood use. Lead-free matte-tin finish per Microchip datasheet. Halogen-free status not explicitly stated in verified data.