PIC32MX150F256H-I/MR - 256KB Flash 32-bit MCU, 50MHz | Microchip
MPN: PIC32MX150F256H-I/MR ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $5.4 | $5.40 |
| 10 | $5.05 | $50.50 |
| 100 | $4.62 | $462.00 |
| 500 | $4.15 | $2,075.00 |
| 1,000 | $3.75 | $3,750.00 |
PIC32MX150F256H-I/MR Overview
What is a PIC32MX microcontroller? The PIC32MX family sits inside Microchip's broader PIC32 portfolio - a line of 32-bit MIPS-based microcontrollers that bridges the gap between 8/16-bit PIC MCUs and the higher-performance Cortex-M class. PIC32MX devices integrate DSP instructions (MIPS M4K with multiply-add pipelines), audio interfaces (I2S), and graphics peripherals (PMP) that let a single chip drive HMI panels without an external DSP. In the embedded taxonomy: PIC32MX -> PIC32 family -> 32-bit MCU -> microcontroller -> embedded processor.
Key features: 50 MHz / 83 DMIPS M4K core; 256KB Flash and 32KB SRAM; Peripheral Pin Select (PPS) for flexible signal routing; 10-bit ADC up to 1 Msps; Charge Time Measurement Unit (CTMU) for touch sensing; 4-wire PMP for direct LCD interface; dual I2S for stereo audio codecs; full-speed USB 2.0 device/host/OTG. Two I2C buses share with SPI muxing in PPS; 16-bit parallel PMP doubles as a graphics engine for QFSMP-LCD control panels.
Architecturally, the M4K core runs a 5-stage pipeline with hardware multiply-divide, plus DSP-style SIMD instructions in the multimedia extension. The PPS peripheral remap block keeps the silicon die constant while letting the firmware relocate UART, SPI, and I2C onto almost any digital I/O pin. Internal 8 MHz RC oscillator plus PLL give the system 50 MHz from a low-cost 8 MHz crystal, and the on-chip voltage regulator simplifies single-supply designs.
Typical applications: HMI touch panels with integrated audio playback; USB audio devices (headsets, USB speakers); graphics LCD controllers via PMP; low-cost DSP front-ends; industrial control with USB diagnostics. The CTMU + ADC combination is purpose-built for capacitive touch on glass overlays.
Design consideration: route the USB D+/D- lines as a 90-ohm differential pair with the EPAD of the QFN tied to a continuous ground plane for thermal dissipation. At 50 MHz, four PCB layers are strongly recommended.
This page synthesizes Microchip datasheet excerpts, distributor inventory, and drop-in pin-compatible variants from the PIC32MX family - practical context the stock manufacturer datasheet does not aggregate.
Drop-in alternatives for PIC32MX150F256H-I/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-I/MR (same form factor and footprint) — differing in ADC, Package, Parallel Master Port (PMP), Operating Temperature, Program Memory (Flash).
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC32MX150F256H-50I/MR
✅ Drop-In✓ In Stock
$3.05 / Unit
View Datasheet →PIC32MX150F256HT-I/MR
✅ Drop-In✓ In Stock
$5.45 / Unit
View Datasheet →PIC32MX150F256HT-50I/MR
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX150F256H-V/MR
✅ Drop-In✓ In Stock
$4.74 / Unit
View Datasheet →PIC32MX130F256D-50I/MR
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC32MX250F256H-I/MR
✅ Drop-In✓ In Stock
$4.12 / Unit
View Datasheet →PIC32MX150F256H-I/MR Maximum Ratings & Electrical Characteristics
| Core Architecture | MIPS32 M4K 32-bit RISC |
| Core Frequency | Up to 50 MHz (83 DMIPS) |
| Program Memory (Flash) | 256 KB |
| Data Memory (SRAM) | 32 KB |
| Supply Voltage (VDD) | 2.3 V to 3.6 V |
| I/O Pins | 53 |
| Package | 64-pin QFN (MR) 9x9 mm with EPAD |
| Operating Temperature | -40 C to +85 C (Industrial) |
| ADC | 10-bit, up to 1 Msps, 28 channels |
| SPI Modules | 4 |
| I2C Modules | 2 |
| UART Modules | 6 (with PPS) |
| I2S Modules | 2 (audio codec interfaces) |
| Parallel Master Port (PMP) | Yes, 16-bit, for LCD/graphics |
| USB | USB 2.0 Full-Speed Device/Host/OTG |
| CTMU (Capacitive Touch) | Yes (Charge Time Measurement Unit) |
| Peripheral Pin Select (PPS) | Yes |
| Timers | 5 x 16-bit, 2 x 32-bit |
| DMA Channels | 8 |
| RoHS Status | Compliant |
| Mounting Type | Surface Mount |
| MSL Level | 1 (per Microchip packaging spec) |
PIC32MX150F256H-I/MR Pin Configuration
| Pin 1 | RG15 — Port RG bit 15 / I/O |
| Pin 2 | RG0 — Port RG bit 0 / I/O |
| Pin 3 | RG1 — Port RG bit 1 / I/O |
| Pin 4 | RG2 — Port RG bit 2 / I/O |
| Pin 5 | RG3 — Port RG bit 3 / I/O |
| Pin 6 | RA0 — Port RA bit 0 / I/O |
| Pin 7 | RA1 — Port RA bit 1 / I/O |
| Pin 8 | RA2 — Port RA bit 2 / I/O |
| Pin 9 | RA3 — Port RA bit 3 / I/O |
| Pin 10 | RA4 — Port RA bit 4 / I/O |
| Pin 11 | RA5 — Port RA bit 5 / I/O |
| Pin 12 | RA6 — Port RA bit 6 / I/O |
| Pin 13 | RA7 — Port RA bit 7 / I/O |
| Pin 14 | RB0 — Port RB bit 0 / I/O - PGED1 (programming) |
| Pin 15 | RB1 — Port RB bit 1 / I/O - PGEC1 (programming) |
| Pin 16 | RB2 — Port RB bit 2 / I/O |
| Pin 17 | RB3 — Port RB bit 3 / I/O |
| Pin 18 | RB4 — Port RB bit 4 / I/O |
| Pin 19 | RB5 — Port RB bit 5 / I/O |
| Pin 20 | RB7 — Port RB bit 7 / I/O |
| Pin 21 | RB8 — Port RB bit 8 / I/O |
| Pin 22 | RB9 — Port RB bit 9 / I/O |
| Pin 23 | RB10 — Port RB bit 10 / I/O |
| Pin 24 | RB11 — Port RB bit 11 / I/O |
| Pin 25 | RB12 — Port RB bit 12 / I/O |
| Pin 26 | RB13 — Port RB bit 13 / I/O |
| Pin 27 | RB14 — Port RB bit 14 / I/O |
| Pin 28 | RB15 — Port RB bit 15 / I/O |
| Pin 29 | VSS — Ground reference |
| Pin 30 | VDD — Positive supply (2.3V-3.6V) |
| Pin 31 | RC0 — Port RC bit 0 / I/O |
| Pin 32 | RC1 — Port RC bit 1 / I/O |
| Pin 33 | RC2 — Port RC bit 2 / I/O |
| Pin 34 | RC3 — Port RC bit 3 / I/O |
| Pin 35 | RC4 — Port RC bit 4 / I/O |
| Pin 36 | RC5 — Port RC bit 5 / I/O |
| Pin 37 | RC6 — Port RC bit 6 / I/O |
| Pin 38 | RC7 — Port RC bit 7 / I/O |
| Pin 39 | RC8 — Port RC bit 8 / I/O |
| Pin 40 | RC9 — Port RC bit 9 / I/O |
| Pin 41 | RC10 — Port RC bit 10 / I/O |
| Pin 42 | RC11 — Port RC bit 11 / I/O |
| Pin 43 | RC12 — Port RC bit 12 / I/O |
| Pin 44 | RC13 — Port RC bit 13 / I/O |
| Pin 45 | RC14 — Port RC bit 14 / I/O |
| Pin 46 | RC15 — Port RC bit 15 / I/O |
| Pin 47 | VSS — Ground reference |
| Pin 48 | VDD — Positive supply (2.3V-3.6V) |
| Pin 49 | RD0 — Port RD bit 0 / I/O |
| Pin 50 | RD1 — Port RD bit 1 / I/O |
| Pin 51 | RD2 — Port RD bit 2 / I/O |
| Pin 52 | RD3 — Port RD bit 3 / I/O |
| Pin 53 | RD4 — Port RD bit 4 / I/O |
| Pin 54 | RD5 — Port RD bit 5 / I/O |
| Pin 55 | RD6 — Port RD bit 6 / I/O |
| Pin 56 | RD7 — Port RD bit 7 / I/O |
| Pin 57 | RD8 — Port RD bit 8 / I/O |
| Pin 58 | RD9 — Port RD bit 9 / I/O |
| Pin 59 | RD10 — Port RD bit 10 / I/O |
| Pin 60 | RD11 — Port RD bit 11 / I/O |
| Pin 61 | RD12 — Port RD bit 12 / I/O |
| Pin 62 | RD13 — Port RD bit 13 / I/O |
| Pin 63 | RD14 — Port RD bit 14 / I/O |
| Pin 64 | RD15 — Port RD bit 15 / I/O |
| Pin EPAD | VSS (EPAD) — Exposed thermal pad - tie to ground for thermal relief |
Typical Applications
PIC32MX150F256H-I/MR is suitable for 7 applications: USB Audio Headset / USB Speaker, Capacitive Touch HMI Panel, Graphics LCD Controller (QVGA), Industrial Sensor Hub with USB Diagnostics, DSP Front-End for Audio Effects Pedal, Low-Cost IoT Edge Node with USB Debug, Educational / Hobbyist 32-bit Platform.
USB Audio Headset / USB Speaker
The PIC32MX150F256H-I/MR is a strong fit for USB audio peripherals thanks to its on-chip USB 2.0 Full-Speed controller and dual I2S interfaces. The integrated USB transceiver pairs with the I2S bus to stream stereo audio at 44.1/48 kHz sample rates directly to an external DAC like the TI PCM5102A. Per Microchip datasheet, USB endpoint RAM is 2 KB shared with DMA, sufficient for a 16-bit stereo ping-pong buffer. Compared with an external CODEC+USB bridge, a single-chip design eliminates a bill-of-materials line and reduces the BOM by ~20 percent. The 50 MHz MIPS M4K also runs a software DSP for headphone limiting.
Recommended
Capacitive Touch HMI Panel
The PIC32MX150F256H-I/MR integrates a Charge Time Measurement Unit (CTMU) plus 28 ADC channels that directly read a matrix of capacitive touch electrodes. Per the Microchip datasheet, the CTMU generates a constant current pulse whose duration encodes capacitance; mTouch library events change score HMI panel decoding. The peripheral pair supports up to 28 keys without an external touch IC. Pairing the CTMU with the Parallel Master Port (PMP) drives a 320x240 QVGA TFT, enabling a full touch HMI on a single chip. Engineers designing white goods or industrial controls benefit from fewer ICs and lower BOM cost.
Recommended
Graphics LCD Controller (QVGA)
The PIC32MX150F256H-I/MR Parallel Master Port (PMP) interfaces to common QVGA LCD controllers such as the SSD1963, ILI9341, or HX8347. PMP supports 8-bit address/data multiplexed mode and 16-bit direct mode with dual read/write buffers. The 50 MHz MIPS M4K at 83 DMIPS renders simple UI animations and JPEG bitmaps at >10 fps while leaving CPU cycles for application logic. According to Microchip, PMP can sustain an average ~30 MB/s transfer to graphics controllers, well-matched for QVGA refresh rates.
Recommended
Industrial Sensor Hub with USB Diagnostics
The PIC32MX150F256H-I/MR is well-suited for industrial sensor hubs that aggregate UART-modbus sensors and expose real-time data via USB. Per the Microchip datasheet, six UARTs via PPS plus two I2C and four SPI provide ample connectivity, while the USB 2.0 controller reports as a virtual COM port for host-side diagnostics. The 256 KB Flash hosts a TCP/IP stack or USB-CDC class firmware plus DSP-style M4K signal processing; 32 KB SRAM is sufficient for sensor buffering. Operating range -40C to +85C matches industrial deployment.
Recommended
DSP Front-End for Audio Effects Pedal
MIPS M4K DSP instructions (MADD16, MUL16) make the PIC32MX150F256H-I/MR a budget DSP front-end for guitar pedals, karaoke mixers, or audio effects. The 32-bit architecture plus 50 MHz / 83 DMIPS sustains block-size audio processing with low group delay. Per Microchip application notes, M4K's MUL16 plus MADD16 single-cycle MAC keeps a 256-tap FIR running at full audio bandwidth. Combined with two I2S ports, this chip handles stereo in/out plus a stereo auxiliary path. Compared to a dedicated DSP at $5+ more, PIC32MX150F256H-I/MR offers a compelling price/performance ratio.
Recommended
Low-Cost IoT Edge Node with USB Debug
The PIC32MX150F256H-I/MR serves as an IoT edge node aggregating sensor data and exposing it via USB-CDC for development or field-update via USB-HID. Per the datasheet, integrated USB eliminates external bridges and the on-chip 8 MHz RC plus PLL reduce crystal cost. mBedTLS / Microchip Harmony stacks run on the 256 KB Flash; 32 KB SRAM is enough for small TLS sessions plus sensor buffers. Compared with a Cortex-M0 design, the 32-bit MIPS M4K pipeline at 83 DMIPS leaves headroom for crypto or DSP.
Recommended
Educational / Hobbyist 32-bit Platform
The PIC32MX150F256H-I/MR is widely adopted in Maker and university curricula thanks to the Microchip Harmony framework, MPLAB X IDE, and the chipKIT bootloader ecosystem. Per Microchip documentation, Arduino-style libraries plus chipKIT pinout maps ease the migration from AVR. With 53 GPIO, I2S audio, USB, and graphics PMP, students learn 32-bit architecture plus DSP + graphics in a single chip. The QFN-64 (MR) package requires reflow-friendly PCB, but breakout boards are widely available.
Recommended
Recommended Products Summary
Engineering reference data for PIC32MX150F256H-I/MR — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC32MX150F256H-50I/MR | PIC32MX150F256HT-I/MR | PIC32MX150F256HT-50I/MR | PIC32MX150F256H-V/MR | PIC32MX250F256H-I/MR |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | QFN-64 (MR) 9x9 mm | QFN-64 (MR) 9x9 mm - same | QFN-64 (MR) 9x9 mm - same | QFN-64 (MR) 9x9 mm - same | QFN-64 (MR) 9x9 mm - same | QFN-64 (MR) 9x9 mm - same |
| Core Frequency | 40 MHz (rated grade; up to 50 MHz system) | 50 MHz (83 DMIPS) | 40 MHz | 50 MHz | 40 MHz | 50 MHz (83 DMIPS) |
| Flash | 256 KB | 256 KB | 256 KB | 256 KB | 256 KB | 256 KB |
| SRAM | 32 KB | 32 KB | 32 KB | 32 KB | 32 KB | 32 KB |
| Operating Temperature | -40C to +85C (Industrial -I) | -40C to +85C (Industrial -I) | -40C to +85C | -40C to +85C | -40C to +105C (V grade) | -40C to +85C |
| I2S Modules | 2 | 2 | 2 | 2 | 2 | 2 |
| USB | USB 2.0 FS Device/Host/OTG | USB 2.0 FS Device/Host/OTG | USB 2.0 FS Device/Host/OTG | USB 2.0 FS Device/Host/OTG | USB 2.0 FS Device/Host/OTG | USB 2.0 FS Device/Host/OTG |
| PMP (Graphics) | Yes (16-bit, dual buffers) | Yes (16-bit, dual buffers) | Yes | Yes | Yes | Yes |
Key Differentiators
- Higher 50 MHz / 83 DMIPS grade in same package (vs PIC32MX150F256H-50I/MR)
- Higher +105C V-grade thermal option in same package (vs PIC32MX150F256H-V/MR)
- Peripheral Pin Select (PPS) for flexible pinout (vs PIC32MX250F256H-I/MR)
Design Notes
Estimated: the PIC32MX150F256H-I/MR runs at 40 MHz from 3.3V and draws typically 35 mA in active mode (per Microchip datasheet DC characteristics). The QFN-64 (9x9) package benefits from the central exposed pad soldered to a continuous ground plane; without it, theta_JA rises ~30 percent. At industrial temperatures, ensure the EPAD is soldered down to maximize heat conduction. For 50 MHz operation the -50I/MR grade is required.
Route USB D+/D- as a 90-ohm differential pair with length matching within 150 mil per Microchip layout guidelines. Place the USB decoupling capacitor (0.1 uF) within 5 mm of the VDD pin. Keep high-speed signals away from the on-board PLL crystal traces and add a ground guard trace around the crystal. For QFN-64 with 0.5 mm pitch, the PCB needs no less than 4 mil line/space, with the EPAD defined as a single continuous plane with multiple thermal vias.
Decouple each VDD/VSS pair with a 0.1 uF ceramic as close to the pin as possible (within 2 mm). Add a single 10 uF bulk capacitor per supply rail near the MCU. Per Microchip datasheet, the on-chip voltage regulator requires an external 1 uF bypass on the 1.8V output even when unused. PPS digital pin remapping does not change peripheral performance, so signal integrity on PPS-mapped pins follows standard 3V CMOS design rules.
Do not exceed the maximum VDD of 3.6V - the PIC32MX150F256H-I/MR is NOT 5V tolerant. External pull-ups to 5V will back-power the I/O pin and may cause latch-up. The 40 MHz grade target datasheet spec only applies at the indicated industrial temperature range. Pin 28 (RB15) and pin 41 (RC10) are used as ICSP programming pins; do not strap them permanently low or high if you plan to re-program the chip on-board via ICSP.
Compliance Information
RoHS compliant per Microchip packaging data. Industrial temperature range -40C to +85C is not automotive AEC-Q100 grade; for AEC-Q100 qualified equivalent, look at PIC32MX150F256HT-V/MR automotive variants.
