PIC32MX575F256HT-80I/PT - 80MHz 32-bit MCU 256KB Flash USB/CAN | Microchip
MPN: PIC32MX575F256HT-80I/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $7.65 | $7.65 |
| 10 | $6.89 | $68.90 |
| 100 | $6.14 | $614.00 |
| 500 | $5.48 | $2,740.00 |
| 1,000 | $4.89 | $4,890.00 |
PIC32MX575F256HT-80I/PT Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash), working memory (RAM), and programmable I/O peripherals onto one die. The PIC32 family extends the legacy PIC architecture to a 32-bit MIPS32 M4K core, delivering MIPS-class performance (~1.5 DMIPS/MHz) while preserving the familiar PIC toolchain (MPLAB X IDE, Harmony, XC32 compiler). Within the broader taxonomy, a PIC32 MCU is a microcontroller -> embedded processor -> semiconductor -> integrated circuit.
Key features include 256 KB Flash with self-programming support, 64 KB SRAM, 53 digital I/O pins, 5 timers, 6 SPI/I2S, 6 UART, 3 I2C, a parallel master port (PMP) for graphics, and DMA for low-CPU-overhead data movement. The integrated USB 2.0 full-speed transceiver, CAN 2.0B controller, and 10-bit 1 MSPS ADC simplify designs that previously required multiple companion chips.
Architecturally, the device uses a 5-stage pipeline MIPS32 M4K core, a multi-vector interrupt controller, and a peripheral bus that supports direct memory access between peripherals and SRAM. This combination allows deterministic interrupt latency even with USB and CAN traffic active - a key requirement for industrial fieldbus nodes and consumer USB peripherals. The F variant suffix denotes the 256 KB Flash density tier within the PIC32MX5xx/6xx/7xx family.
Typical applications include USB peripherals (HID, CDC, MSD, audio class), CAN-based industrial nodes, graphics HMI with the PMP bus, sensor aggregation, and consumer audio devices. The wide peripheral set also makes the device suitable for retrofitting older 16-bit PIC24/PIC32 designs where USB or CAN is needed without going to a Cortex-M part.
When designing with this device, plan for a 3.3V single supply (2.3V to 3.6V tolerant) and provision decoupling per the family datasheet. The two ICSP/ICD pins (PGECx, PGEDx) must be routed with short traces and pull-ups to enable in-circuit programming and MPLAB debugger operation.
This page synthesizes distributor pricing, drop-in same-package alternatives, and design notes not found in a single manufacturer datasheet, giving procurement and firmware engineers a single-source reference.
Drop-in alternatives for PIC32MX575F256HT-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 PIC32MX575F256HT-80I/PT (same form factor and footprint) — differing in ADC, Package, Operating Temperature, Timers, RoHS Status.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC32MX575F256H-80I/PT
✅ Drop-In✓ In Stock
$7.46 / Unit
View Datasheet →PIC32MX575F256HT-80V/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX575F256H-80V/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX695F512H-80I/PT
✅ Drop-In✓ In Stock
$7.1 / Unit
View Datasheet →PIC32MX695F512HT-80I/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX575F256L-80I/PT
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC32MX575F256HT-80I/PT Maximum Ratings & Electrical Characteristics
| Core Architecture | MIPS32 M4K |
| Bit Width | 32-bit |
| Maximum CPU Clock | 80 MHz |
| Flash Program Memory | 256 KB (256K x 8) |
| SRAM | 64 KB |
| Operating Voltage Range | 2.3 V to 3.6 V |
| Digital I/O Pins | 53 |
| Package | 64-TQFP (10x10 mm) |
| Mounting Type | Surface Mount |
| USB | USB 2.0 Full-Speed Device/Host/OTG |
| CAN | CAN 2.0B |
| ADC | 10-bit, 16 channels |
| Timers | 5 |
| UART | 6 |
| SPI | 3 (also configurable as I2S) |
| I2C | 4 |
| Operating Temperature Range | -40C to +85C (Industrial, -I suffix) |
| RoHS Status | Compliant |
| Lead-Free | Yes |
PIC32MX575F256HT-80I/PT Pin Configuration
| Pin 1 | RP15/RD8 — Remappable I/O / PORTD bit 8 |
| Pin 2 | SDA1/RA4 — I2C1 SDA / PORTA bit 4 |
| Pin 3 | SCL1/RA5 — I2C1 SCL / PORTA bit 5 |
| Pin 4 | VSS — Ground reference |
| Pin 5 | VDD — Positive supply (2.3V to 3.6V) |
| Pin 6 | PGED1/AN0/CN2/RB0 — ICSP data / analog input 0 / PORTB bit 0 |
| Pin 7 | PGEC1/AN1/CN3/RB1 — ICSP clock / analog input 1 / PORTB bit 1 |
| Pin 8 | AN2/CN4/RB2 — Analog input 2 / PORTB bit 2 |
| Pin 9 | AN3/CN5/RB3 — Analog input 3 / PORTB bit 3 |
| Pin 10 | AN4/CN6/RB4 — Analog input 4 / PORTB bit 4 |
| Pin 11 | VSS — Ground reference |
| Pin 12 | OSC1/RC12 — Crystal oscillator input / PORTC bit 12 |
| Pin 13 | OSC2/RC15 — Crystal oscillator output / PORTC bit 15 |
| Pin 14 | VSS — Ground reference |
| Pin 15 | VDD — Positive supply (2.3V to 3.6V) |
| Pin 16 | PGED2/RB5 — Alternate ICSP data / PORTB bit 5 |
| Pin 17 | PGEC2/RB6 — Alternate ICSP clock / PORTB bit 6 |
| Pin 18 | AN5/CN7/RB7 — Analog input 5 / PORTB bit 7 |
| Pin 19 | AN6/OC2/RB8 — Analog input 6 / Output Compare 2 / PORTB bit 8 |
| Pin 20 | AN7/OC3/RB9 — Analog input 7 / Output Compare 3 / PORTB bit 9 |
| Pin 21 | AN8/OC4/RB10 — Analog input 8 / Output Compare 4 / PORTB bit 10 |
| Pin 22 | AN9/OC5/RB11 — Analog input 9 / Output Compare 5 / PORTB bit 11 |
| Pin 23 | VSS — Ground reference |
| Pin 24 | VDD — Positive supply (2.3V to 3.6V) |
| Pin 25 | CVREF+/AN10/RB12 — Comparator Vref+ / analog input 10 / PORTB bit 12 |
| Pin 26 | CVREF-/AN11/RB13 — Comparator Vref- / analog input 11 / PORTB bit 13 |
| Pin 27 | AN12/RB14 — Analog input 12 / PORTB bit 14 |
| Pin 28 | AN13/RB15 — Analog input 13 / PORTB bit 15 |
| Pin 29 | TMS/RA0 — JTAG TMS / PORTA bit 0 |
| Pin 30 | TCK/RA1 — JTAG TCK / PORTA bit 1 |
| Pin 31 | TDI/RA2 — JTAG TDI / PORTA bit 2 |
| Pin 32 | TDO/RA3 — JTAG TDO / PORTA bit 3 |
| Pin 33 | SDA2/RA6 — I2C2 SDA / PORTA bit 6 |
| Pin 34 | SCL2/RA7 — I2C2 SCL / PORTA bit 7 |
| Pin 35 | VSS — Ground reference |
| Pin 36 | VDD — Positive supply (2.3V to 3.6V) |
| Pin 37 | D+/RG2 — USB D+ / PORTG bit 2 |
| Pin 38 | D-/RG3 — USB D- / PORTG bit 3 |
| Pin 39 | VBUS/RG1 — USB VBUS sense / PORTG bit 1 |
| Pin 40 | VUSB3V3/RG0 — USB internal transceiver supply / PORTG bit 0 |
| Pin 41 | RF6/RC1 — Remappable I/O / PORTC bit 1 |
| Pin 42 | RF7/RC2 — Remappable I/O / PORTC bit 2 |
| Pin 43 | RF8/RC3 — Remappable I/O / PORTC bit 3 |
| Pin 44 | RF9/RC4 — Remappable I/O / PORTC bit 4 |
| Pin 45 | U1RTS/RF4/RC5 — UART1 RTS / remappable I/O / PORTC bit 5 |
| Pin 46 | U1RX/RF2/RC6 — UART1 RX / remappable I/O / PORTC bit 6 |
| Pin 47 | U1TX/RF3/RC7 — UART1 TX / remappable I/O / PORTC bit 7 |
| Pin 48 | U1CTS/RF5/RC8 — UART1 CTS / remappable I/O / PORTC bit 8 |
| Pin 49 | VSS — Ground reference |
| Pin 50 | VDD — Positive supply (2.3V to 3.6V) |
| Pin 51 | RF13/RC9 — Remappable I/O / PORTC bit 9 |
| Pin 52 | RF12/RC10 — Remappable I/O / PORTC bit 10 |
| Pin 53 | SDO1/RE5 — SPI1 data out / PORTE bit 5 |
| Pin 54 | SDI1/RE6 — SPI1 data in / PORTE bit 6 |
| Pin 55 | SCK1/RE7 — SPI1 clock / PORTE bit 7 |
| Pin 56 | SS1/RE8 — SPI1 slave select / PORTE bit 8 |
| Pin 57 | SDA3/RE9 — I2C3 SDA / PORTE bit 9 |
| Pin 58 | SCL3/RE10 — I2C3 SCL / PORTE bit 10 |
| Pin 59 | RD0 — PORTD bit 0 |
| Pin 60 | RD1 — PORTD bit 1 |
| Pin 61 | RD2 — PORTD bit 2 |
| Pin 62 | RD3 — PORTD bit 3 |
| Pin 63 | RD4 — PORTD bit 4 |
| Pin 64 | RD5 — PORTD bit 5 |
Typical Applications
PIC32MX575F256HT-80I/PT is suitable for 6 applications: USB HID / CDC Peripheral, CAN-based Industrial Sensor Node, Graphics HMI with Parallel Master Port, USB Audio Class Device, Building Automation / Smart Home Gateway, Consumer Data Logger with USB Mass Storage.
USB HID / CDC Peripheral
The PIC32MX575F256HT-80I/PT is well suited to USB Human Interface Device and Communication Device Class peripherals because it integrates a USB 2.0 Full-Speed transceiver and protocol engine that requires no external PHY. With 80 MHz MIPS32 M4K performance and 64 KB SRAM, the device easily handles HID report generation, CDC-ACM echo buffers, and bootloader code at qty 1 unit price ~USD 7.65. Place 0.1uF decoupling at each VDD pin and route the USB DP/DM pair as a 90 ohm differential per the family datasheet. The on-chip USB controller eliminates a typical USD 1-2 external PHY IC from the BOM.
Recommended
CAN-based Industrial Sensor Node
The PIC32MX575F256HT-80I/PT's integrated CAN 2.0B controller and industrial -40C to +85C temperature range fit sensor aggregation nodes on industrial CAN fieldbuses. The 10-bit 1 MSPS ADC with 16 channels can sample multiple analog sensors in parallel, while the CAN controller handles bus arbitration at up to 1 Mbps. Use an external MCP2551 or MCP2562 CAN transceiver between the MCU and the bus. The 64 KB SRAM is large enough to buffer CAN frames during transient bus congestion without dropping messages.
Recommended
Graphics HMI with Parallel Master Port
The PIC32MX575F256HT-80I/PT's parallel master port (PMP) allows it to drive small TFT LCDs and OLED displays directly, enabling low-cost HMI panels without an external graphics controller. At 80 MHz the M4K core can refresh QVGA panels at 30+ fps with simple widget libraries. The 256 KB Flash fits menu structures, fonts, and bitmap assets for typical appliance or instrumentation front panels. Add a 10k pull-up on PMP enable lines and follow the IBIS model for signal integrity.
Recommended
USB Audio Class Device
The PIC32MX575F256HT-80I/PT can implement USB Audio Class 1.0 devices (headsets, speakers, microphones) by combining the integrated USB Full-Speed engine with the I2S peripheral and DMA channels. The 64 KB SRAM buffers USB audio packets at 48 kHz stereo with minimal CPU overhead, while the MIPS32 M4K core handles audio sample routing. Use an external 24-bit audio codec such as the AK4554 or PCM1774 via I2S for the analog interface.
Recommended
Building Automation / Smart Home Gateway
The PIC32MX575F256HT-80I/PT can act as a low-cost bridge between a USB host (e.g., a Wi-Fi module) and a CAN or RS-485 fieldbus used in building automation. The 6 UARTs, 4 I2C, and 3 SPI/I2S channels give plenty of serial connectivity for sensor hubs and HVAC controllers. Industrial temperature rating allows installation in unconditioned electrical rooms. The 256 KB Flash fits BACnet or Modbus stacks plus a custom application.
Recommended
Consumer Data Logger with USB Mass Storage
The PIC32MX575F256HT-80I/PT can implement a USB Mass Storage device by combining the integrated USB controller with an external SD card or SPI Flash over SPI. The DMA channels move sectors between the SD card and the USB endpoint buffer without CPU intervention. The 64 KB SRAM holds at least one 512-byte sector plus USB protocol overhead. Industrial temperature grade allows use in outdoor sports, automotive data loggers, and instrumentation.
Recommended
Recommended Products Summary
Engineering reference data for PIC32MX575F256HT-80I/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC32MX575F256H-80I/PT | PIC32MX575F256HT-80V/PT | PIC32MX695F512H-80I/PT | PIC32MX575F256L-80I/PT |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 64-TQFP (10x10) | 64-TQFP (10x10) - same | 64-TQFP (10x10) - same | 64-TQFP (10x10) - same | 64-TQFP (10x10) - same |
| Flash Memory | 256 KB | 256 KB | 256 KB | 512 KB | 256 KB |
| SRAM | 64 KB | 64 KB | 64 KB | 128 KB | 64 KB |
| Maximum CPU Clock | 80 MHz | 80 MHz | 80 MHz | 80 MHz | 80 MHz |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C | -40C to +105C (Automotive) | -40C to +85C | -40C to +85C |
| 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 |
| CAN | CAN 2.0B | CAN 2.0B | CAN 2.0B | CAN 2.0B | CAN 2.0B |
| ADC | 10-bit, 16 channels | 10-bit, 16 channels | 10-bit, 16 channels | 10-bit, 16 channels | 10-bit, 16 channels |
Key Differentiators
- Same-die tray-packaged sibling available as drop-in (vs PIC32MX575F256H-80I/PT)
- Automotive-grade temperature option in the same package (vs PIC32MX575F256HT-80V/PT)
- Double Flash and SRAM upgrade on same footprint (vs PIC32MX695F512H-80I/PT)
Design Notes
The PIC32MX575F256HT-80I/PT operates from a single 2.3V to 3.6V supply. Place one 0.1uF decoupling capacitor as close as possible to each VDD pin (5 VDD pins on the 64-TQFP) and one 10uF bulk capacitor near the package. Add a ferrite bead or LC filter on VUSB3V3 (pin 40) when the USB transceiver is active, and a 0.1uF + 4.7uF pair on the same pin. The VBUS pin (pin 39) typically needs a divider to 3.3V for sensing; see the family datasheet for the recommended USB bus-power circuit.
At 80 MHz the PIC32MX575F256HT-80I/PT typically dissipates roughly 60-90 mW depending on peripheral activation. With a theta_JA around 50-60 C/W on a 64-TQFP 4-layer board, junction rise above ambient is approximately 5C, well within the 85C industrial ceiling. For automotive -V grades (-40C to +105C) the same thermal budget applies but with reduced ambient margin. Avoid placing the MCU next to a switching regulator's inductor to keep switching noise off the analog rails.
Route the 12 MHz primary oscillator traces (OSC1/OSC2, pins 12 and 13) as short as possible, guard them with a ground pour, and place the load capacitors within 2 mm of the IC. The USB D+/D- pair (pins 37/38) must be routed as a 90 ohm differential with no stubs and matched length to within 150 mil. Reserve PGED1/PGEC1 (pins 6/7) and optionally PGED2/PGEC2 (pins 16/17) for the MPLAB ICSP header; both pairs must have accessible test points on prototype builds.
Do not leave any VDD pin floating - all five VDD pins (5, 15, 24, 36, 50) must be connected even if a pin's I/O group is unused. The TMS/TCK/TDI/TDO pins (29-32) must not be repurposed without disabling JTAG in the configuration bits, otherwise boundary-scan tools will fight the application. Always set the correct DEVCFG bits for the oscillator mode and disable the JTAG port in production firmware for additional code security.
Keep analog inputs AN0-AN13 grouped near a quiet analog ground island, and route digital returns to the main ground plane outside the analog area. The CVREF+ and CVREF- pins (25/26) benefit from a small RC filter when used as a comparator reference. Place the SD card or external SPI Flash connector within 50 mm of the SPI1 cluster (pins 53-56) to keep the SPI bus below 25 MHz with sharp edges.
Compliance Information
RoHS and lead-free confirmed per Microchip product page; AEC-Q100 qualification not applicable to -I industrial variant - choose -80V/PT suffix for automotive grade.
