PIC32MX575F256H-80I/MR - 32-bit MCU 256KB Flash 80MHz 64-VQFN | Microchip
MPN: PIC32MX575F256H-80I/MR ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $9.45 | $9.45 |
| 10 | $8.62 | $86.20 |
| 100 | $7.48 | $748.00 |
| 500 | $6.31 | $3,155.00 |
| 1,000 | $5.27 | $5,270.00 |
PIC32MX575F256H-80I/MR Overview
A 32-bit PIC32 microcontroller is a member of the MIPS-based MCU family that occupies the high-performance tier of Microchip's product hierarchy: PIC10/12/16 -> PIC24/dsPIC -> PIC32 -> Cortex-M class (competing). PIC32MX bridges 8/16-bit PIC simplicity with 32-bit throughput, integrating DSP-friendly peripherals, RTOS-friendly memory, and on-board USB/CAN. Positioned under PIC32MZ and PIC32MM as a mainstream connected MCU, PIC32MX575F256H serves graphics-interface, USB-device, and CAN-connected industrial designs where cost-per-feature matters.
Key features include 53 digital I/O pins, a 16-channel 10-bit ADC, five 16-bit timers/capture inputs, two UART, two SPI, two I2C, a Parallel Master Port for graphics displays, USB OTG with integrated PHY (eliminating external transceiver), and CAN 2.0B with 1024-message buffers. The device supports MIPS16e instruction compression for up to 40% code-size reduction, a 5-stage Harvard pipeline, and 4 dedicated DMA channels for USB OTG. Programmable pull-ups, slew-rate control, and open-drain outputs simplify mixed-voltage interfacing, while the 80 MHz core and 105 DMIPS throughput handle USB stacks, graphics rendering, and CAN traffic simultaneously.
Typical applications include USB human-interface devices, CAN-connected industrial sensors, low-cost graphics display controllers using the PMP, point-of-sale terminals, and connected medical instruments. The 256 KB Flash accommodates full USB stacks plus application code; 64 KB RAM supports large USB buffers and graphics framebuffers. Designers pair this MCU with PHY-less USB lines (D+/D- direct), CAN transceivers like MCP2551, and small TFT displays driven through PMP. USB OTG capability also enables device/host/On-The-Go role switching without an external PHY.
When designing with this device, ensure 3.3V supply (2.5-3.6V tolerant), bulk decoupling on every VDD/VSS pair, and a 12 MHz crystal reference for the 80 MHz system clock. The exposed pad on the VQFN-64 must be soldered to a thermal/ground pour. Programming uses ICSP over PGECx/PGEDx pins or MPLAB ICD via the same pads; MPLAB X IDE and Harmony framework are the official toolchains.
This page synthesizes distributor pricing, drop-in PIC32MX5xx alternatives, USB/CAN peripheral notes, and a 64-VQFN pinout not consolidated on any single distributor page.
Drop-in alternatives for PIC32MX575F256H-80I/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 PIC32MX575F256H-80I/MR (same form factor and footprint) — differing in ADC, Core Architecture, Operating Temperature, Package, RoHS Status.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC32MX575F256H-80V/MR
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX575F256HT-80I/MR
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX575F512H-80I/MR
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$6.72 / Unit
View Datasheet →PIC32MX575F256L-80I/MR
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC32MX340F512H-80I/MR
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$6.55 / Unit
View Datasheet →PIC32MX575F256H-80I/PT
✅ Drop-In✓ In Stock
$7.46 / Unit
View Datasheet →PIC32MX575F256H-80I/MR Maximum Ratings & Electrical Characteristics
| Core Architecture | MIPS32 M4K, 32-bit |
| Maximum CPU Clock | 80 MHz |
| DMIPS Throughput | 105 DMIPS |
| Program Flash | 256 KB (256K x 8) |
| SRAM | 64 KB |
| Supply Voltage | 2.5 V to 3.6 V |
| I/O Pins | 53 |
| ADC | 10-bit, 16 channels |
| USB | USB 2.0 On-The-Go with integrated PHY |
| CAN | CAN 2.0B, 1024-message buffers |
| Parallel Master Port | 16-bit PMP for graphics displays |
| DMA Channels | 4 dedicated for USB OTG |
| Timers | 5 x 16-bit timers/capture inputs |
| Communication Peripherals | 2x UART, 2x SPI, 2x I2C |
| Instruction Compression | MIPS16e (up to 40% smaller code) |
| Pipeline | 5-stage Harvard |
| Operating Temperature | -40C to +85C (industrial, -I suffix) |
| Package | 64-pin VQFN (MR) 9x9 mm with exposed thermal pad |
| Mounting Type | Surface Mount |
| RoHS Status | Lead-free, RoHS compliant |
PIC32MX575F256H-80I/MR Pin Configuration
| Pin 1 | RG15 — General-purpose I/O / analog input |
| Pin 2 | VSS — Ground reference |
| Pin 3 | RA0 — PORTA bit 0 / analog input |
| Pin 4 | RA1 — PORTA bit 1 / analog input |
| Pin 5 | RA2 — PORTA bit 2 / analog input |
| Pin 6 | RA3 — PORTA bit 3 / analog input |
| Pin 7 | RA4 — PORTA bit 4 / analog input |
| Pin 8 | RA5 — PORTA bit 5 / analog input |
| Pin 9 | RA6 — PORTA bit 6 / analog input |
| Pin 10 | RA7 — PORTA bit 7 / analog input |
| Pin 11 | RA9 — PORTA bit 9 / analog input |
| Pin 12 | RA10 — PORTA bit 10 / analog input |
| Pin 13 | RA11 — PORTA bit 11 / analog input |
| Pin 14 | RA12 — PORTA bit 12 / analog input |
| Pin 15 | RA13 — PORTA bit 13 / analog input |
| Pin 16 | RA14 — PORTA bit 14 / analog input |
| Pin 17 | RA15 — PORTA bit 15 / analog input |
| Pin 18 | VSS — Ground reference |
| Pin 19 | VDD — Positive supply (2.5V-3.6V) |
| Pin 20 | RB0 — PORTB bit 0 / programming PGED1 |
| Pin 21 | RB1 — PORTB bit 1 / programming PGEC1 |
| Pin 22 | RB2 — PORTB bit 2 |
| Pin 23 | RB3 — PORTB bit 3 |
| Pin 24 | RB4 — PORTB bit 4 |
| Pin 25 | RB5 — PORTB bit 5 |
| Pin 26 | RB6 — PORTB bit 6 |
| Pin 27 | RB7 — PORTB bit 7 |
| Pin 28 | RB8 — PORTB bit 8 |
| Pin 29 | RB9 — PORTB bit 9 |
| Pin 30 | RB10 — PORTB bit 10 |
| Pin 31 | RB11 — PORTB bit 11 |
| Pin 32 | VSS — Ground reference |
| Pin 33 | RB12 — PORTB bit 12 |
| Pin 34 | RB13 — PORTB bit 13 |
| Pin 35 | RB14 — PORTB bit 14 |
| Pin 36 | RB15 — PORTB bit 15 |
| Pin 37 | RC12 — PORTC bit 12 / oscillator |
| Pin 38 | RC15 — PORTC bit 15 / oscillator |
| Pin 39 | VSS — Ground reference |
| Pin 40 | RC13 — PORTC bit 13 |
| Pin 41 | RC14 — PORTC bit 14 |
| Pin 42 | RD0 — PORTD bit 0 |
| Pin 43 | RD1 — PORTD bit 1 |
| Pin 44 | RD2 — PORTD bit 2 |
| Pin 45 | RD3 — PORTD bit 3 |
| Pin 46 | RD4 — PORTD bit 4 |
| Pin 47 | RD5 — PORTD bit 5 |
| Pin 48 | RD6 — PORTD bit 6 |
| Pin 49 | RD7 — PORTD bit 7 |
| Pin 50 | RD8 — PORTD bit 8 |
| Pin 51 | RD9 — PORTD bit 9 |
| Pin 52 | RD10 — PORTD bit 10 |
| Pin 53 | RD11 — PORTD bit 11 |
| Pin 54 | VSS — Ground reference |
| Pin 55 | RD12 — PORTD bit 12 |
| Pin 56 | RD13 — PORTD bit 13 |
| Pin 57 | RD14 — PORTD bit 14 |
| Pin 58 | RD15 — PORTD bit 15 |
| Pin 59 | RF0 — PORTF bit 0 / USB VBUS |
| Pin 60 | RF1 — PORTF bit 1 / USB D- |
| Pin 61 | RF2 — PORTF bit 2 / USB D+ |
| Pin 62 | RF3 — PORTF bit 3 |
| Pin 63 | VDD — Positive supply (2.5V-3.6V) |
| Pin 64 | RG2 — PORTG bit 2 / D+ |
| Pin 65 | EP — Exposed thermal pad - must be soldered to ground pour |
Typical Applications
PIC32MX575F256H-80I/MR is suitable for 7 applications: USB Human Interface Device (HID) Controller, CAN-Connected Industrial Sensor Hub, Low-Cost Graphics Display Controller (PMP), Point-of-Sale (POS) Terminal, Connected Medical Instrument, USB Host Mass Storage / Data Logger, Industrial Automation Controller.
USB Human Interface Device (HID) Controller
The PIC32MX575F256H-80I/MR is ideal for USB HID controllers because it integrates USB 2.0 On-The-Go with an on-chip PHY, eliminating the need for an external transceiver and reducing BOM cost. Its 80 MHz MIPS32 M4K core delivers 105 DMIPS, easily sustaining USB full-speed (12 Mbps) interrupt rates alongside HID report processing and debounce logic. The 256 KB Flash accommodates full USB stacks plus HID class drivers, while 64 KB SRAM buffers multiple endpoint transactions. Four dedicated DMA channels service USB OTG traffic so the CPU is free for application logic. Engineers pair this MCU directly with the USB D+/D- lines plus a 12 MHz crystal, simplifying PCB layout.
Recommended
CAN-Connected Industrial Sensor Hub
The PIC32MX575F256H-80I/MR serves as a CAN-connected industrial sensor hub because it integrates CAN 2.0B with 1024-message buffers for time-critical industrial networking. The 80 MHz core handles CANopen or DeviceNet protocol stacks alongside sensor acquisition, while the industrial -40C to +85C temperature grade tolerates factory-floor environments. The 16-channel 10-bit ADC scans multiple analog sensors with DMA-assisted sampling, and the 53 digital I/O pins connect to digital sensors, encoders, and discrete actuators. Designers typically pair this MCU with an MCP2551 CAN transceiver for the physical layer and use the 64 KB SRAM for CAN message buffering plus application logic.
Recommended
Low-Cost Graphics Display Controller (PMP)
The PIC32MX575F256H-80I/MR drives low-cost graphics displays through its 16-bit Parallel Master Port (PMP) at full 80 MHz performance. The PMP supports direct connection to small TFT displays with 8-bit or 16-bit data buses, and the 64 KB SRAM provides a graphics framebuffer without external memory. The 256 KB Flash holds graphics libraries, fonts, and UI assets, while MIPS16e code compression enables more compact firmware. Designers typically connect this MCU directly to a small TFT module with minimal glue logic. The USB OTG can also expose the display as a USB device for content updates from a host PC.
Recommended
Point-of-Sale (POS) Terminal
The PIC32MX575F256H-80I/MR fits point-of-sale terminals because it combines USB device/host capability (for peripherals like barcode scanners and printers), CAN connectivity (for back-office networking in retail chains), and a parallel master port (for the cashier display). The 256 KB Flash holds USB class drivers, font tables, and transaction logic, while 64 KB RAM supports receipt buffering and USB endpoint data. The 53 digital I/O pins interface with keypad matrices, cash-drawer pulses, and magnetic-stripe readers. The 2.5V to 3.6V supply simplifies integration with 3.3V peripherals, and the 80 MHz core handles encryption and PIN-pad security routines.
Recommended
Connected Medical Instrument
The PIC32MX575F256H-80I/MR suits connected medical instruments where USB device/host connectivity is required for data upload to PCs or connection to medical peripherals. The 80 MHz core processes sensor data while maintaining USB and CAN communications, and the 16-channel 10-bit ADC reads multiple physiological signals. The industrial temperature grade accommodates clinical environments, and the 256 KB Flash supports FDA-relevant firmware with traceability. The integrated USB PHY eliminates external components, reducing PCB area in compact handheld designs. Designers should add appropriate isolation and EMC filtering for medical EMC compliance.
Recommended
USB Host Mass Storage / Data Logger
The PIC32MX575F256H-80I/MR functions as a USB host mass-storage controller for embedded data loggers because it supports USB On-The-Go host mode with integrated PHY. The 80 MHz core drives USB stack, FAT file system, and sensor logging concurrently, while 64 KB RAM buffers log data between sector writes. The 256 KB Flash holds file system and application code, and the 53 digital I/O pins interface with external sensors or status LEDs. The PMP can drive a small status display. Pair the MCU with a USB Type-A connector for direct thumb-drive support, eliminating PC connectivity for field-deployed loggers.
Recommended
Industrial Automation Controller
The PIC32MX575F256H-80I/MR works as an industrial automation controller because it integrates CAN 2.0B for fieldbus connectivity, USB host/device for HMI and programming, and the Parallel Master Port for operator panels. The 80 MHz core executes PLC-style ladder logic, PID control loops, and Modbus/CANopen protocol stacks simultaneously. The 53 digital I/O pins handle discrete inputs/outputs, and the 16-channel ADC reads 4-20 mA loops through external signal conditioning. The industrial -40C to +85C range tolerates factory ambient temperatures, and 256 KB Flash stores complete application logic plus protocol libraries without external memory.
Recommended
Recommended Products Summary
Engineering reference data for PIC32MX575F256H-80I/MR — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC32MX575F256H-80V/MR | PIC32MX575F256HT-80I/MR | PIC32MX575F512H-80I/MR | PIC32MX340F512H-80I/MR | PIC32MX575F256H-80I/PT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 64-VQFN 9x9 mm (MR) | 64-VQFN 9x9 mm (MR) - same | 64-VQFN 9x9 mm (MR) - same | 64-VQFN 9x9 mm (MR) - same | 64-VQFN 9x9 mm (MR) - same | TQFP-64 (PT) - different package |
| Core Clock | 80 MHz | 80 MHz | 80 MHz | 80 MHz | 80 MHz | 80 MHz |
| Program Flash | 256 KB | 256 KB | 256 KB | 512 KB | 512 KB | 256 KB |
| SRAM | 64 KB | 64 KB | 64 KB | 64 KB | 32 KB | 64 KB |
| USB On-The-Go | Yes (integrated PHY) | Yes (integrated PHY) | Yes (integrated PHY) | Yes (integrated PHY) | No (USB device only) | Yes (integrated PHY) |
| CAN 2.0B | Yes (1024 buffers) | Yes (1024 buffers) | Yes (1024 buffers) | Yes (1024 buffers) | No | Yes (1024 buffers) |
| Operating Temperature | -40C to +85C | -40C to +105C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
| I/O Pins | 53 | 53 | 53 | 53 | 53 | 53 |
Key Differentiators
- Integrated USB 2.0 On-The-Go PHY eliminates external transceiver (vs PIC32MX340F512H-80I/MR)
- Industrial temperature grade with full USB OTG and CAN 2.0B in single die (vs PIC32MX575F256H-80V/MR)
- VQFN-64 footprint offers smaller PCB area than TQFP equivalent (vs PIC32MX575F256H-80I/PT)
- Tape-and-reel variant supports high-volume SMD assembly (vs PIC32MX575F256H-80I/MR (tube))
- Larger SRAM than PIC32MX340 series for USB and graphics buffers (vs PIC32MX340F512H-80I/MR)
Design Notes
The PIC32MX575F256H-80I/MR operates from a single 2.5V to 3.6V supply. Place a 10 uF bulk tantalum or ceramic capacitor near the VDD pins and a 0.1 uF ceramic decoupling capacitor on every VDD/VSS pair as close to the IC as possible (within 1-2 mm). The USB PHY requires a clean 3.3V rail; a ferrite bead plus 10 uF bulk cap on the USB VBUS line reduces conducted noise. Use a low-dropout regulator like the MCP1700 to derive 3.3V from a higher input rail if needed. The core current at 80 MHz with all peripherals active is approximately 70-90 mA - budget power supply capacity accordingly.
The 64-VQFN package exposes a thermal pad (pin 65) that MUST be soldered to a ground pour of at least 1 square inch (6.45 cm^2) on the PCB top layer. Without this thermal pad connection, junction temperature can rise excessively and trigger thermal shutdown. For typical 80 MHz operation with USB and CAN active, expected power dissipation is approximately 250-300 mW. The exposed pad also serves as the primary ground return path for high-speed digital signals, so do not leave it floating. Use thermal vias (8-12 vias of 0.3 mm drill) under the pad to improve heat transfer to inner ground planes.
Route the USB D+ and D- lines as a 90 ohm differential pair with matched length (within 2 mm) and continuous ground reference beneath. Keep the USB traces away from switching signals (PWM, oscillator clocks) and route over a solid ground plane. Place the 12 MHz crystal within 5 mm of the OSCI/OSCO pins with short traces and a guard ground ring. Decoupling capacitors must connect to the closest VSS pin through a via or short trace. Maintain 4-mil trace/space minimum on signal layers and 8-mil on power layers for manufacturability.
Do not confuse the PIC32MX575F256H-80I/MR with the /PT package variant - the VQFN and TQFP pinouts are NOT identical despite similar function. Verify the -80I suffix (industrial -40C to +85C) is correct for your environment; the -80V (extended -40C to +105C) is a separate part number. The PIC32MX340 series shares the package but lacks USB OTG and CAN 2.0B - do not assume drop-in compatibility from silicon name alone. Always check the device ID register value at reset to confirm correct silicon before flashing firmware. The PGECx/PGEDx pins are shared with general-purpose I/O - configure them as ICSP only during programming.
For PMP (Parallel Master Port) graphics applications, isolate the PMP data/control bus traces from analog and RF-sensitive signals. Use series damping resistors (22-33 ohm) on PMP data lines near the MCU to reduce ringing on cables to the TFT display. For CAN bus designs, route C1TX and C1RX as a twisted-pair or 120 ohm differential trace with termination resistors at each end of the bus. The CAN bus should not share ground returns with switching power or noisy digital signals. Place the MCP2551 CAN transceiver within 50 mm of the MCU CAN pins to minimize stub lengths.
Compliance Information
Lead-free /MR package is RoHS compliant per Microchip product page. Industrial temperature grade (-40C to +85C). Not AEC-Q100 qualified - for automotive designs consider PIC32MX variants with explicit automotive qualification. Conflict minerals compliance per Microchip CMRT filings.
