PIC32MX575F256H-80I/PT - 80MHz 32-bit MCU 256KB Flash | Microchip
MPN: PIC32MX575F256H-80I/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $12.42 | $12.42 |
| 10 | $11.18 | $111.80 |
| 100 | $9.94 | $994.00 |
| 500 | $8.7 | $4,350.00 |
| 1,000 | $7.46 | $7,460.00 |
PIC32MX575F256H-80I/PT Overview
A PIC32 microcontroller belongs to the 32-bit MCU (microcontroller unit) family, which sits in the embedded processing hierarchy above 8-bit and 16-bit microcontrollers. Within Microchip's portfolio, PIC32MX devices target general-purpose 32-bit applications using the MIPS32 instruction set, sitting above PIC16 and PIC24/dsPIC families and below the higher-performance PIC32MZ family. The 32-bit core enables more complex software stacks, larger memory addressing, and richer peripheral integration than legacy 8/16-bit MCUs, while keeping deterministic real-time behavior.
Key features include 256 KB Flash, 64 KB SRAM, USB 2.0 full-speed OTG, CAN 2.0b, up to eight 16-bit timers, a 10-bit 1 Msps ADC with up to 16 channels, I2S for audio, and a PMP parallel master port for graphics. The 64-pin TQFP 10x10 mm package offers manageable PCB area with 0.5 mm pitch for hand-prototyping or low-density layouts, and the -80I industrial temperature grade supports -40C to +85C operation.
The M4K core uses a 5-stage pipeline with single-cycle multiply, hardware divide, and a configurable prefetch/cache controller that mitigates Flash wait-state penalties at 80 MHz. The 16 KB instruction cache and prefetch module accelerate tight loops in DSP-style filtering and motor-control code, while the bus matrix keeps USB, CAN, DMA, and the PMP concurrent.
Typical applications include USB peripherals, industrial CAN nodes, low-cost graphics HMI panels, audio playback with I2S DACs, and bridges between legacy industrial sensors and modern USB hosts. It is also used in entry-level embedded web servers and POS terminals.
When designing, validate that the 3.3V rail meets the 2.3-3.6V supply window, keep oscillator traces short, and reserve a robust decoupling network around the VDD/VSS pairs. Use Microchip MPLAB Harmony or MCC for peripheral configuration to avoid register-level misconfiguration.
This page synthesizes distributor pricing, drop-in alternatives in the same TQFP-64 footprint, and practical design notes not aggregated on the manufacturer datasheet alone.
Drop-in alternatives for PIC32MX575F256H-80I/PT — 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/PT (same form factor and footprint) — differing in Package, Operating Temperature, Timers, ADC, Core Architecture.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC32MX575F256H-80I/PT-VA
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX575F512H-80I/PT
✅ Drop-In✓ In Stock
$5.11 / Unit
View Datasheet →PIC32MX575F256H-80V/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX575F256L-80I/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX564F128H-80I/PT
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33EP512MC806-E/PT
✅ Drop-In✓ In Stock
$8.75 / Unit
View Datasheet →PIC32MX575F256H-80I/PT Maximum Ratings & Electrical Characteristics
| Core Architecture | MIPS32 M4K |
| Data Bus Width | 32-bit |
| Maximum Clock Frequency | 80 MHz |
| Program Memory (Flash) | 256 KB (256K x 8) |
| SRAM | 64 KB |
| Package | TQFP-64 (PT) 10x10 mm, 0.5 mm pitch |
| Mounting Type | Surface Mount |
| Supply Voltage | 2.3 V to 3.6 V |
| Operating Temperature | -40C to +85C (Industrial grade, suffix I) |
| USB Interface | USB 2.0 Full-Speed OTG |
| CAN Interface | CAN 2.0b |
| ADC | 10-bit, up to 16 channels, 1 Msps |
| Timers | Up to eight 16-bit timers |
| Parallel Master Port (PMP) | Yes (graphics support) |
| I2S Audio Interface | Yes |
| RoHS Status | Compliant |
| Lead-Free | Yes |
PIC32MX575F256H-80I/PT Pin Configuration
| Pin 1 | SOCK1/RD0 — PMP data or general I/O |
| Pin 2 | SOCK2/RD1 — PMP data or general I/O |
| Pin 3 | RD2 — PMP data or general I/O |
| Pin 4 | RD3 — PMP data or general I/O |
| Pin 5 | SDA2/RA2 — I2C2 data or general I/O |
| Pin 6 | SCL2/RA3 — I2C2 clock or general I/O |
| Pin 7 | RA4 — General I/O |
| Pin 8 | RA5 — General I/O |
| Pin 9 | RA6 — General I/O |
| Pin 10 | RA7 — General I/O |
| Pin 11 | AVDD — Analog supply (3.3V) |
| Pin 12 | AVSS — Analog ground |
| Pin 13 | AN0/C1INC/RB0 — ADC input or general I/O |
| Pin 14 | AN1/C1IND/RB1 — ADC input or general I/O |
| Pin 15 | AN2/C2INC/RB2 — ADC input or general I/O |
| Pin 16 | AN3/C2IND/RB3 — ADC input or general I/O |
| Pin 17 | AN4/C1INB/RB4 — ADC input or general I/O |
| Pin 18 | AN5/C1INA/RB5 — ADC input or general I/O |
| Pin 19 | AN6/C2INA/RB6 — ADC input or general I/O (PGEC2/PROG) |
| Pin 20 | AN7/C2INB/RB7 — ADC input or general I/O (PGED2/PROG) |
| Pin 21 | VREF-/CVREF-/RA9 — ADC reference low |
| Pin 22 | VREF+/CVREF+/RA10 — ADC reference high |
| Pin 23 | AVDD — Analog supply (3.3V) |
| Pin 24 | AVSS — Analog ground |
| Pin 25 | AN8/RB8 — ADC input or general I/O |
| Pin 26 | AN9/RB9 — ADC input or general I/O |
| Pin 27 | AN10/RB10 — ADC input or general I/O |
| Pin 28 | AN11/RB11 — ADC input or general I/O |
| Pin 29 | AN12/RB12 — ADC input or general I/O |
| Pin 30 | AN13/RB13 — ADC input or general I/O |
| Pin 31 | AN14/RB14 — ADC input or general I/O |
| Pin 32 | AN15/OCFB/RB15 — ADC input or general I/O |
| Pin 33 | VDD — Digital supply (3.3V) |
| Pin 34 | VSS — Digital ground |
| Pin 35 | OSC1/CLKI/RC12 — Crystal input or clock in |
| Pin 36 | OSC2/CLKO/RC15 — Crystal output or clock out |
| Pin 37 | SOSCI/RPC13 — Secondary oscillator or general I/O |
| Pin 38 | SOSCO/RPC14 — Secondary oscillator or general I/O |
| Pin 39 | PGED1/AN16/RB0 alt — ICD data or general I/O |
| Pin 40 | PGEC1/AN17/RB1 alt — ICD clock or general I/O |
| Pin 41 | VUSB — USB internal regulator output |
| Pin 42 | VBUS — USB VBUS sense |
| Pin 43 | D-/RG3 — USB D- |
| Pin 44 | D+/RG2 — USB D+ |
| Pin 45 | VDD — Digital supply (3.3V) |
| Pin 46 | VSS — Digital ground |
| Pin 47 | C1TX/RF0 — CAN TX or general I/O |
| Pin 48 | C1RX/RF1 — CAN RX or general I/O |
| Pin 49 | RF2 — General I/O |
| Pin 50 | RF3 — General I/O |
| Pin 51 | RF4 — General I/O |
| Pin 52 | RF5 — General I/O |
| Pin 53 | RF6 — General I/O |
| Pin 54 | RF7 — General I/O |
| Pin 55 | RF8 — General I/O |
| Pin 56 | RF9 — General I/O |
| Pin 57 | SDA1/RA15 — I2C1 data or general I/O |
| Pin 58 | SCL1/RA14 — I2C1 clock or general I/O |
| Pin 59 | PMD/RD5 — PMP or general I/O |
| Pin 60 | PMWR/RD4 — PMP or general I/O |
| Pin 61 | PMCS1/RD11 — PMP chip select or general I/O |
| Pin 62 | PMCS2/RD12 — PMP chip select or general I/O |
| Pin 63 | PMD/RD6 — PMP or general I/O |
| Pin 64 | PMD/RD7 — PMP or general I/O |
Typical Applications
PIC32MX575F256H-80I/PT is suitable for 6 applications: USB Industrial Peripherals and Bridges, CAN 2.0b Industrial Nodes, Low-Cost Graphics HMI Panels, I2S Audio Playback Devices, Entry-Level Embedded Web / TCP-IP Servers, POS Terminals and USB Barcode Scanners.
USB Industrial Peripherals and Bridges
The PIC32MX575F256H-80I/PT fits USB industrial peripherals because it integrates USB 2.0 full-speed OTG, 80 MHz MIPS32 M4K performance, and 64 KB SRAM for class-specific descriptors. Its 256 KB Flash holds full USB stacks (CDC, HID, vendor-class) plus application logic. Designers place a 48 MHz crystal on the OSC1/OSC2 pins and use the internal PLL to drive the 80 MHz USB-compatible clock, avoiding external clock chips. Unlike bare 8-bit MCUs that need an external PHY, this part implements USB on-chip, reducing BOM and PCB area while keeping industrial -40C to +85C operation.
Recommended
CAN 2.0b Industrial Nodes
On CAN 2.0b industrial nodes, the PIC32MX575F256H-80I/PT provides hardware CAN, 10-bit ADC for sensor sampling, and 256 KB Flash for protocol stacks such as CANopen or J1939. The integrated CAN module handles bit timing and acceptance filters, offloading the CPU for deterministic 1 Mbps bus arbitration. Compared with external CAN controllers, the on-chip engine reduces interrupt latency and saves board space. Pair the device with a high-speed CAN transceiver on the CANTX/CANRX pins and add TVS diodes for ISO 7637-2 surge compliance in 24V industrial environments.
Recommended
Low-Cost Graphics HMI Panels
The PIC32MX575F256H-80I/PT drives low-cost graphics HMI panels using its parallel master port (PMP), which supports 8/16-bit interfaces to TFT controllers and external graphics RAM. At 80 MHz, the M4K core refreshes QVGA panels without DMA starvation while reserving CPU bandwidth for touch and logic layers. The 64 KB SRAM accommodates small framebuffers and font tables; 256 KB Flash holds GUI libraries and asset tables. Place the part adjacent to the PMP connector with matched-impedance traces to keep EMI low, and add a 10uF + 0.1uF decoupling network near each VDD/VSS pair.
Recommended
I2S Audio Playback Devices
For I2S audio playback devices, the PIC32MX575F256H-80I/PT provides a dedicated I2S peripheral that streams 16/32-bit PCM data to external DACs without CPU copy loops. The 64 KB SRAM buffers multi-second audio clips, and the 256 KB Flash stores compressed audio assets and codec state machines. A 48 kHz sample rate consumes roughly 2 KB/s of I/O, leaving ample headroom for UI handling. Add a low-jitter oscillator reference for the I2S bit clock and isolate the analog audio ground from the digital MCU ground with a ferrite bead to keep noise out of the audio path.
Recommended
Entry-Level Embedded Web / TCP-IP Servers
For entry-level embedded web servers, the PIC32MX575F256H-80I/PT runs lightweight TCP/IP stacks (e.g., Microchip MLA TCP/IP or Harmony Net) within its 256 KB Flash, while 64 KB SRAM holds a handful of simultaneous sockets. The 80 MHz core sustains 1-2 Mbps throughput on Ethernet-over-SPI or external MAC interfaces. The 10-bit ADC monitors analog sensor inputs reported over HTTP. Use external SPI Ethernet controllers for wired connectivity, and add watchdog + brown-out configuration per the family datasheet 60001156J to keep the device recoverable in field deployments.
Recommended
POS Terminals and USB Barcode Scanners
The PIC32MX575F256H-80I/PT fits POS terminals and USB barcode scanners because it combines USB host/device OTG, ample Flash for HID stacks, and I2S for beeper/prompt tones. The PMP peripheral can drive a small character LCD or OLED, while the 10-bit ADC reads battery or supply telemetry. At 80 MHz, the device decodes 1D/2D barcodes at typical scanner speeds without DMA bottlenecks. Place the MCU close to the USB connector with a 90-ohm differential pair for DP/DM, and add ESD protection arrays on external pins to survive hot-plug events.
Recommended
Recommended Products Summary
Engineering reference data for PIC32MX575F256H-80I/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC32MX575F256H-80I/PT-VA | PIC32MX575F512H-80I/PT | PIC32MX575F256H-80V/PT | PIC32MX564F128H-80I/PT | DSPIC33EP512MC806-E/PT |
|---|---|---|---|---|---|---|
| Package | TQFP-64 (PT) 10x10 mm | TQFP-64 (10x10) | TQFP-64 (10x10) | TQFP-64 (10x10) | TQFP-64 (10x10) | TQFP-64 (10x10) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core | MIPS32 M4K | MIPS32 M4K | MIPS32 M4K | MIPS32 M4K | MIPS32 M4K | dsPIC33 DSC |
| Max Frequency | 80 MHz | 80 MHz | 80 MHz | 80 MHz | 80 MHz | 70 MIPS (DSP) |
| Flash | 256 KB | 256 KB | 512 KB | 256 KB | 128 KB | 512 KB |
| SRAM | 64 KB | 64 KB | 64 KB | 64 KB | 32 KB | 48 KB |
| USB | USB 2.0 FS OTG | USB 2.0 FS OTG | USB 2.0 FS OTG | USB 2.0 FS OTG | USB 2.0 FS OTG | No USB |
| CAN | CAN 2.0b | CAN 2.0b | CAN 2.0b | CAN 2.0b | CAN 2.0b | ECAN (1x) |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C | -40C to +85C | -40C to +105C (extended) | -40C to +85C | -40C to +125C |
Key Differentiators
- Doubles Flash in same TQFP-64 footprint for firmware growth (vs PIC32MX564F128H-80I/PT)
- Industrial temperature grade aligned with most embedded deployments (vs DSPIC33EP512MC806-E/PT)
- DSC upgrade path with same footprint for motor-control forks (vs DSPIC33EP512MC806-E/PT)
Design Notes
Estimated: at 80 MHz full-load CPU plus USB + CAN active, total VDD current is approximately 70 mA. With 3.3V rail and 90% DC-DC efficiency, derate the supply to 250 mA. Place 10uF bulk + 0.1uF + 10nF decoupling near each VDD/VSS pair. For analog (AVDD/AVSS), use a ferrite bead to isolate digital switching noise from the 10-bit ADC reference. The internal 1.8V core LDO does not need an external capacitor beyond 1uF per datasheet recommendation.
Keep the 48 MHz primary crystal traces (OSC1/OSC2) short and symmetric, and place the load capacitors within 5 mm of the pins. Route the USB DP/DM pair as a 90-ohm differential with ground reference on both sides; add a 47 nF + 0.1 uF AC-coupling network if the host expects full-speed edge rates. Maintain continuous ground pour under the TQFP-64 footprint to dissipate heat and provide a low-impedance return path.
Do not exceed 3.6V on any VDD/AVDD pin, even during hot-plug or USB bus-powered transients - use a TVS array on VBUS. Configure the brown-out reset (BOR) and watchdog timer (WDT) early in firmware so a stalled core recovers without external intervention. Per Microchip errata practice, consult the device-specific errata document for any PIC32MX575 silicon revisions before final production. The VUSB pin requires a 0.47 uF decoupling cap; omitting it causes USB enumeration failures.
Compliance Information
RoHS compliant per Microchip product page. Industrial temperature grade only - not AEC-Q100 automotive qualified. For automotive, refer to AEC-Q100-qualified PIC32 variants.
