PIC32MX150F256H-50I/MR - 32-bit 50MHz 256KB Flash MCU | Microchip
MPN: PIC32MX150F256H-50I/MR ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $5.62 | $5.62 |
| 10 | $5.18 | $51.80 |
| 100 | $4.55 | $455.00 |
| 500 | $4.02 | $2,010.00 |
| 1,000 | $3.5 | $3,500.00 |
| 3,000 | $3.05 | $9,150.00 |
PIC32MX150F256H-50I/MR Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program and data memory, peripherals, and I/O on one silicon die. The PIC32MX family sits in the broader taxonomy as: 32-bit microcontroller -> RISC MCU -> embedded controller -> semiconductor IC. Within Microchip's portfolio, the PIC32MX1xx/2xx/5xx series represents the mid-range 32-bit tier, optimized for cost-sensitive applications that still require USB, CAN, or graphics peripherals. Compared with 8-bit PIC16/PIC18 MCUs, the PIC32MX offers five to ten times the processing throughput and large memory footprints, while remaining more power-efficient and easier to use than high-end Cortex-M4 devices.
Key differentiating features of this part include Peripheral Pin Select (PPS) for flexible signal routing, a Parallel Master Port (PMP) with dual buffers for graphics interfaces, three I2S/SPI modules for codec connectivity, a 10-bit 1 Msps ADC with up to 28 channels, a 16-bit Parallel Master Port, and an integrated mTouch capacitive-touch sensing peripheral via CTMU. The PPS feature in particular allows remapping of digital peripheral functions to alternate pins, simplifying PCB layout and BOM consolidation.
Architecturally, the device combines a Harvard-style bus with unified 32-bit instruction and data paths, hardware multiply/divide, single-cycle MAC operations, a 5-stage pipeline, and tightly-coupled prefetch cache for Flash. The 64-pin QFN package exposes 53 digital I/O, USB 2.0 full-speed OTG, two I2C, two UART, four SPI, and two I2S interfaces, plus PMP and a 10-bit ADC, providing extensive connectivity for mixed-signal embedded designs.
Typical applications include USB audio peripherals with codec interfacing, industrial control HMI panels using PMP graphics, consumer appliances with capacitive-touch interfaces, low-cost motor control, sensor aggregation nodes with USB diagnostics, and educational/development platforms where the PICkit 3 or ICD 3 toolchain is already in place.
When designing with the PIC32MX150F256H-50I/MR, note the -50 speed grade limits operation to 50 MHz (versus 70 MHz on -70 variants). Decoupling requires 100 nF on every VDD/AVDD pair plus a bulk 4.7 uF; the exposed thermal pad must be soldered to a continuous ground plane for thermal dissipation and reduced ground inductance.
This page synthesizes XAIPART distributor pricing, same-brand drop-in alternatives sourced from the PIC32MX1xx/2xx family, and practical PCB/design notes not found in the standalone manufacturer datasheet.
Drop-in alternatives for PIC32MX150F256H-50I/MR — 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 PIC32MX150F256H-50I/MR (same form factor and footprint) — differing in Package, ADC, Parallel Master Port (PMP), SPI Modules, Operating Temperature.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC32MX250F256H-50I/MR
✅ Drop-In✓ In Stock
$3.05 / Unit
View Datasheet →PIC32MX170F256H-50I/MR
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX130F256H-50I/MR
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX150F256H-50I/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX150F128H-50I/MR
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX230F256H-50I/MR
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX150F256H-50I/MR Maximum Ratings & Electrical Characteristics
| Core Architecture | MIPS32 M4K (32-bit RISC) |
| Maximum CPU Frequency | 50 MHz |
| DMIPS Performance | 83 DMIPS |
| Program Flash Memory | 256 KB (256K x 8) |
| SRAM | 32 KB |
| Operating Voltage Range | 2.3 V to 3.6 V |
| ADC | 10-bit, up to 16 channels, 1 Msps |
| Package | 64-pin QFN (MR) 9x9 mm with EP |
| GPIO Count | 53 |
| USB Interface | USB 2.0 Full-Speed OTG |
| I2S Modules | 2 |
| SPI Modules | 3 (also configurable as I2S) |
| UART Modules | 2 |
| I2C Modules | 2 |
| Parallel Master Port (PMP) | Yes, with dual buffers for graphics |
| mTouch Capacitive Sensing | Yes (CTMU peripheral) |
| Peripheral Pin Select (PPS) | Yes |
| Operating Temperature | -40C to +85C (Industrial) |
| RoHS Status | Compliant |
| Mounting Type | Surface Mount |
PIC32MX150F256H-50I/MR Pin Configuration
| Pin 1 | RB0 — Port B bit 0 / PGED1 (programming data) |
| Pin 2 | RB1 — Port B bit 1 / PGEC1 (programming clock) |
| Pin 3 | RB2 — Port B bit 2 |
| Pin 4 | RB3 — Port B bit 3 |
| Pin 5 | RB4 — Port B bit 4 |
| Pin 6 | RB5 — Port B bit 5 |
| Pin 7 | RB6 — Port B bit 6 |
| Pin 8 | RB7 — Port B bit 7 |
| Pin 9 | RB8 — Port B bit 8 |
| Pin 10 | RB9 — Port B bit 9 |
| Pin 11 | RB10 — Port B bit 10 |
| Pin 12 | RB11 — Port B bit 11 |
| Pin 13 | RB12 — Port B bit 12 |
| Pin 14 | RB13 — Port B bit 13 |
| Pin 15 | RB14 — Port B bit 14 |
| Pin 16 | RB15 — Port B bit 15 |
| Pin 17 | VDD — Digital supply voltage (3.3V) |
| Pin 18 | RC12 — Port C bit 12 |
| Pin 19 | RC13 — Port C bit 13 |
| Pin 20 | RC14 — Port C bit 14 |
| Pin 21 | RC15 — Port C bit 15 |
| Pin 22 | VSS — Digital ground |
| Pin 23 | RD0 — Port D bit 0 |
| Pin 24 | RD1 — Port D bit 1 |
| Pin 25 | RD2 — Port D bit 2 |
| Pin 26 | RD3 — Port D bit 3 |
| Pin 27 | RD4 — Port D bit 4 |
| Pin 28 | RD5 — Port D bit 5 |
| Pin 29 | RD6 — Port D bit 6 |
| Pin 30 | RD7 — Port D bit 7 |
| Pin 31 | VSS — Digital ground |
| Pin 32 | RC0 — Port C bit 0 |
| Pin 33 | RC1 — Port C bit 1 |
| Pin 34 | RC2 — Port C bit 2 |
| Pin 35 | RD8 — Port D bit 8 |
| Pin 36 | RD9 — Port D bit 9 |
| Pin 37 | RD10 — Port D bit 10 |
| Pin 38 | RD11 — Port D bit 11 |
| Pin 39 | RD12 — Port D bit 12 |
| Pin 40 | RD13 — Port D bit 13 |
| Pin 41 | RD14 — Port D bit 14 |
| Pin 42 | RD15 — Port D bit 15 |
| Pin 43 | VSS — Digital ground |
| Pin 44 | RC3 — Port C bit 3 |
| Pin 45 | RC4 — Port C bit 4 |
| Pin 46 | RC5 — Port C bit 5 |
| Pin 47 | RC6 — Port C bit 6 |
| Pin 48 | RC7 — Port C bit 7 |
| Pin 49 | RC8 — Port C bit 8 |
| Pin 50 | RC9 — Port C bit 9 |
| Pin 51 | VUSB — USB internal transceiver supply (3.3V) |
| Pin 52 | VBUS — USB VBUS sense input |
| Pin 53 | D+ — USB D+ data line |
| Pin 54 | D- — USB D- data line |
| Pin 55 | VSS — USB ground |
| Pin 56 | RA0 — Port A bit 0 |
| Pin 57 | RA1 — Port A bit 1 |
| Pin 58 | RA2 — Port A bit 2 |
| Pin 59 | RA3 — Port A bit 3 |
| Pin 60 | RA4 — Port A bit 4 |
| Pin 61 | RA5 — Port A bit 5 |
| Pin 62 | RA6 — Port A bit 6 |
| Pin 63 | RA7 — Port A bit 7 |
| Pin 64 | RA8 — Port A bit 8 |
Typical Applications
PIC32MX150F256H-50I/MR is suitable for 6 applications: USB Audio Peripherals, Industrial HMI Panels with PMP Graphics, Consumer Appliances with Capacitive Touch, USB Sensor Aggregation Nodes, Low-Cost BLDC Motor Control, Educational Development Platforms.
USB Audio Peripherals
The PIC32MX150F256H-50I/MR is well-suited for USB audio peripherals such as USB speakers, USB headphones, and audio interfaces, leveraging the integrated USB 2.0 Full-Speed OTG controller and two I2S interfaces for direct codec connectivity. The 50 MHz MIPS32 M4K core delivers sufficient headroom for 48 kHz / 24-bit audio streaming with software mixing or sample-rate conversion. The 256 KB Flash accommodates USB audio class 1.0/2.0 stacks plus codec drivers, while 32 KB SRAM provides buffering for USB isochronous transfers. Compared to a Cortex-M0 implementation, the PIC32MX's two I2S ports enable simultaneous input/output for full-duplex audio paths. Designers should use the Microchip MLA USB Audio device stack and a 12 MHz crystal to derive the USB 48 MHz clock via the PLL.
Recommended
Industrial HMI Panels with PMP Graphics
The PIC32MX150F256H-50I/MR's Parallel Master Port (PMP) with dual read/write buffers makes it a strong fit for industrial HMI panels driving small TFT LCDs in 8-bit or 16-bit parallel mode. The 50 MHz system clock and DMA engine keep the frame buffer refreshed at up to QVGA (320x240) without CPU intervention. PPS allows flexible routing of the PMP data, control, and address signals to any available GPIO, simplifying PCB layout when the LCD connector position is fixed. The 256 KB Flash stores full-color bitmaps and Chinese font tables commonly required in industrial operator interfaces, while 32 KB SRAM supports a small frame buffer. A typical implementation pairs the MCU with a 2.4-inch or 3.5-inch TFT using the ILI9341 controller.
Recommended
Consumer Appliances with Capacitive Touch
The integrated CTMU (Charge Time Measurement Unit) and mTouch firmware library allow the PIC32MX150F256H-50I/MR to implement up to 16 capacitive-touch buttons or sliders without external touch ICs. This is ideal for kitchen appliances, washing-machine control panels, and HVAC thermostats where mechanical switches are replaced with sealed glass touch surfaces. The 50 MHz core runs the touch-scanning algorithm with adaptive thresholding in under 200 us per cycle, leaving ample MIPS for the user-interface state machine. The 256 KB Flash holds both the touch library and the appliance control firmware, while the 10-bit ADC supports temperature or humidity sensing for closed-loop control. Industrial -40C to +85C temperature range ensures reliability in harsh appliance environments.
Recommended
USB Sensor Aggregation Nodes
The PIC32MX150F256H-50I/MR is ideal for USB sensor aggregation nodes that read multiple I2C/SPI sensors and present a composite HID or CDC device to a host PC. The two I2C, four SPI (with two configurable as I2S), and two UART peripherals support up to 10 external sensors simultaneously. USB 2.0 Full-Speed bandwidth (12 Mbps) easily handles aggregated sensor streams at typical sampling rates of 1 kHz. The 32 KB SRAM buffers incoming samples during USB frame assembly, preventing dropouts. Firmware updates over USB using the Microchip HID bootloader allow field upgrades without opening the enclosure. Typical use cases include environmental monitoring stations, multi-axis IMU loggers, and laboratory data-acquisition front ends.
Recommended
Low-Cost BLDC Motor Control
The PIC32MX150F256H-50I/MR's 50 MHz core, 10-bit 1 Msps ADC, and PWM/OC peripherals can drive sensorless or sensored BLDC motors up to approximately 200 W with external FET drivers. The ADC samples back-EMF zero-crossings or phase currents at 50 kHz with deterministic interrupt latency, supporting field-oriented control (FOC) firmware implementations. PPS routes the PWM outputs and ADC trigger signals to convenient pins, simplifying 3-phase inverter PCB layout. The 256 KB Flash holds FOC lookup tables (sine, Park/Clarke transforms) plus application state machines, while 32 KB SRAM supports the observer and controller loops. This combination is well-suited to small fans, pumps, e-bike hub motors, and appliance compressor drives.
Recommended
Educational Development Platforms
The PIC32MX150F256H-50I/MR is a common MCU choice for university embedded-systems courses and hobbyist development boards thanks to the free MPLAB X IDE, MPLAB Harmony 3 framework, and low-cost PICkit 3 / ICD 4 debug probes. The 50 MHz MIPS32 M4K core gives students exposure to a real 32-bit RISC architecture with cache, prefetch, and pipeline concepts, while the rich peripheral set (USB, PMP, ADC, I2S, mTouch) allows a single board to teach multiple topics. The 256 KB Flash and 32 KB SRAM are sufficient for student projects ranging from USB mouse to audio spectrum analyzers. Starter code and reference designs are widely available from Microchip's academic program, and the same MR-64 QFN package is used on popular Curiosity and Explorer development boards.
Recommended
Recommended Products Summary
Engineering reference data for PIC32MX150F256H-50I/MR — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC32MX250F256H-50I/MR | PIC32MX170F256H-50I/MR | PIC32MX130F256H-50I/MR | PIC32MX150F256H-50I/PT | PIC32MX150F128H-50I/MR | PIC32MX230F256H-50I/MR |
|---|---|---|---|---|---|---|---|
| Package | 64-pin QFN (MR) 9x9 mm | 64-pin QFN (MR) 9x9 mm - same | 64-pin QFN (MR) 9x9 mm - same | 64-pin QFN (MR) 9x9 mm - same | 64-pin TQFP (PT) - same die, different package | 64-pin QFN (MR) 9x9 mm - same | 64-pin QFN (MR) 9x9 mm - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| CPU Frequency | 50 MHz | 50 MHz | 50 MHz | 50 MHz | 50 MHz | 50 MHz | 50 MHz |
| Flash Memory | 256 KB | 256 KB | 256 KB | 256 KB | 256 KB | 128 KB | 256 KB |
| SRAM | 32 KB | 32 KB | 32 KB | 32 KB | 32 KB | 32 KB | 32 KB |
| USB 2.0 OTG | Yes | Yes | Yes | No | Yes | Yes | Yes |
| PMP (Parallel Master Port) | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| I2S Modules | 2 | 2 | 2 | 0 | 2 | 2 | 2 |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
Key Differentiators
- Integrated USB 2.0 Full-Speed OTG with on-chip transceiver (vs PIC32MX130F256H-50I/MR)
- Higher Flash density (256 KB) over the lower-cost family (vs PIC32MX150F128H-50I/MR)
- Two dedicated I2S audio interfaces plus 4 SPI/I2S-configurable modules (vs PIC32MX130F256H-50I/MR)
- Same 64-pin QFN (MR) footprint across PIC32MX1xx/2xx families for design reuse (vs PIC32MK0512MCJ048-I/7MX)
Design Notes
Decoupling requires 100 nF X7R ceramic capacitors placed within 3 mm of every VDD/AVDD pin pair, plus a single 4.7 uF bulk capacitor adjacent to the supply pins. The PIC32MX core draws brief current spikes on each clock edge, and inadequate decoupling causes voltage rail droop that can trigger spurious brown-out resets. For USB applications, also place a 100 nF on VUSB (pin 51). Do not share decoupling capacitors between VDD and AVDD; analog supply noise couples directly into the 10-bit ADC, degrading conversion accuracy.
The 64-pin QFN (MR) package exposes a center thermal pad (EP) on the bottom of the IC that MUST be soldered to a continuous ground plane for both thermal dissipation and low-inductance ground reference. The exposed pad also serves as the primary electrical ground connection; failing to solder it results in erratic behavior. Estimated: at 50 MHz full-activity with USB active, the device dissipates approximately 0.3 W; the package's theta-JA of ~28 C/W yields a junction temperature rise of ~8 C above ambient, well within the 125 C maximum.
Use Peripheral Pin Select (PPS) to remap digital peripherals to convenient GPIO pins, but always lock PPS assignments early in the design cycle and avoid changing them across firmware revisions. Provide a 12 MHz fundamental-mode crystal or oscillator on the OSC1/OSC2 pins (typically RA8 and RA7 on the MR package) for USB applications requiring 48 MHz USB clock derivation. For non-USB designs, the internal 8 MHz RC oscillator with PLL may suffice. Route USB D+/D- as a 90-ohm differential pair with matched length and an explicit ground reference plane, keeping total length under 50 mm to meet USB 2.0 Full-Speed signal-integrity specifications.
Do not confuse the -50 speed grade (50 MHz max) with the -70 grade (70 MHz max) - both are valid PIC32MX150F256H variants but operate at different maximum frequencies. The industrial temperature range (-40C to +85C) is denoted by the 'I' suffix in the part number; the 'MR' suffix denotes the 64-pin QFN package. When migrating firmware between PIC32MX1xx/2xx sub-families, verify that the PPS mapping registers (RPA0R through RPG9R for output, INTxR through INPUT_PINx for input) match the new device's pin assignments.
For PMP graphics interfaces driving TFT LCDs over 8-bit or 16-bit parallel buses, keep data, address, and control traces under 50 mm total length and add 22-33 ohm series termination at the MCU end if the cable/connector extends beyond the PCB. Match the PMP write strobe (PMWR) and read strobe (PMRD) trace lengths to within 5 mm of the data bus. Route the PMP signals on the opposite side of the PCB from switching power converters or USB data lines to minimize crosstalk. Add a 100 nF bypass on each VDD pin and consider ferrite beads on analog supply rails if the ADC is used concurrently with PMP at high frame rates.
Compliance Information
RoHS compliant per Microchip product page. Lead-free / halogen-free package per Microchip environmental compliance documentation. Not AEC-Q100 qualified - for automotive applications consider PIC32MX150F256H-50I/MR with extended qualification or migrate to AEC-Q100 PIC32MX family variants.
