PIC32MX675F512LT-80I/PF - 32-bit MCU 80MHz 512KB Flash TQFP-100 | Microchip
MPN: PIC32MX675F512LT-80I/PF ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $9.2 | $9.20 |
| 10 | $8.15 | $81.50 |
| 100 | $7.3 | $730.00 |
| 500 | $6.65 | $3,325.00 |
| 1,000 | $6.05 | $6,050.00 |
PIC32MX675F512LT-80I/PF Overview
What is a PIC32MX microcontroller? The PIC32MX family is Microchip's MIPS-based line of 32-bit microcontrollers, sitting above the 16-bit PIC24/dsPIC and below the Cortex-M class in computational throughput. PIC32MX devices combine a Harvard architecture with single-cycle flash access, a rich peripheral set, and are programmed using MPLAB X IDE with MPLAB XC32 compilers. The 'MX5/6/7' sub-family specifically targets connected-embedded applications by integrating Ethernet MAC and USB on-chip.
Key features of the PIC32MX675F512LT-80I/PF include 53 general-purpose I/O pins, two I2C, two SPI, and four UART interfaces, a 16-channel 10-bit ADC at 1 Msps, five 16-bit timers/counters, and a parallel master port for external bus expansion. The on-chip Ethernet MAC requires an external PHY (such as the LAN8720A or DP83848) to complete an MII/RM10 interface, while the USB OTG controller can operate in Host, Device, or On-the-Go mode with an external PHY-less transceiver.
Architecturally, the PIC32MX675F512L series employs a five-stage MIPS pipeline, prefetch cache to mask flash wait states, and a separate bus for peripherals. The device operates from a single 2.5-3.6 V supply, includes a 32 kHz low-power secondary oscillator for RTCC, and supports five low-power sleep modes for battery-backed designs.
Typical applications include industrial Ethernet gateways, building-automation controllers, point-of-sale terminals, embedded web servers, USB peripherals, and CAN-connected sensor nodes. The combination of deterministic interrupt latency, large SRAM for TCP/IP stacks, and dual connectivity interfaces makes it well suited to connected industrial designs.
When designing with this part, ensure the Ethernet PHY RM10 reference clock is sourced correctly and that the 25 MHz or 50 MHz main oscillator is used, not the internal 8 MHz RC. Decouple AVDD and VDD separately with 0.1 uF and 10 uF capacitors placed within 5 mm of the package pins.
This page synthesizes distributor pricing, same-family drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for PIC32MX675F512LT-80I/PF — 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 PIC32MX675F512LT-80I/PF (same form factor and footprint) — differing in Package, ADC, USB, Ethernet MAC, Timers.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC32MX675F512L-80I/PF
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX675F256LT-80I/PF
✅ Drop-In✓ In Stock
$6.45 / Unit
View Datasheet →PIC32MX575F512LT-80I/PF
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX664F128LT-I/PF
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX460F512LT-80I/PT
✅ Drop-In✓ In Stock
$6.85 / Unit
View Datasheet →PIC32MX675F512LT-80I/PF Maximum Ratings & Electrical Characteristics
| Core | MIPS32 M4K (32-bit RISC) |
| Core frequency | 80 MHz (80 MIPS) |
| Flash program memory | 512 KB |
| SRAM data memory | 128 KB |
| Supply voltage (VDD) | 2.5 V to 3.6 V |
| I/O pins | 53 |
| Package | TQFP-100 (PF), 14x14 mm |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +85C (industrial) |
| Ethernet MAC | 10/100 Mbit integrated (requires external PHY) |
| USB | USB 2.0 Full-Speed OTG integrated |
| CAN modules | 2 |
| DMA channels | 8 |
| UART | 4 |
| SPI | 2 |
| I2C | 2 |
| ADC | 16-channel 10-bit, 1 Msps |
| Timers | 5 x 16-bit |
| MSL Level | 3 |
| Lead-free / RoHS | Lead-free / RoHS compliant |
PIC32MX675F512LT-80I/PF Pin Configuration
| Pin 1 | RG15 — I/O port RG15 |
| Pin 2 | VDD — Supply voltage |
| Pin 3 | RP0A — I/O port RA0 |
| Pin 4 | RP1 — I/O port RB0 |
| Pin 5 | RP1 — I/O port RB1 |
| Pin 6 | RP2 — I/O port RB2 |
| Pin 7 | RP3 — I/O port RB3 |
| Pin 8 | RP4 — I/O port RB4 |
| Pin 9 | VSS — Ground |
| Pin 10 | RP5 — I/O port RB5 |
| Pin 11 | RP6 — I/O port RB6 |
| Pin 12 | RP7 — I/O port RB7 |
| Pin 13 | RP8 — I/O port RB8 |
| Pin 14 | RP9 — I/O port RB9 |
| Pin 15 | VSS — Ground |
| Pin 16 | RP10 — I/O port RB10 |
| Pin 17 | RP11 — I/O port RB11 |
| Pin 18 | VDD — Supply voltage |
| Pin 19 | RP12 — I/O port RB12 |
| Pin 20 | RP13 — I/O port RB13 |
| Pin 21 | RP14 — I/O port RB14 |
| Pin 22 | RP15 — I/O port RB15 |
| Pin 23 | VSS — Ground |
| Pin 24 | RA0 — I/O port RA0 |
| Pin 25 | RA1 — I/O port RA1 |
| Pin 26 | RA2 — I/O port RA2 |
| Pin 27 | RA3 — I/O port RA3 |
| Pin 28 | RA4 — I/O port RA4 |
| Pin 29 | RA5 — I/O port RA5 |
| Pin 30 | RA6 — I/O port RA6 |
| Pin 31 | RA7 — I/O port RA7 |
| Pin 32 | AVDD — Analog supply |
| Pin 33 | AVSS — Analog ground |
| Pin 34 | RA9 — I/O port RA9 |
| Pin 35 | RA10 — I/O port RA10 |
| Pin 36 | VDD — Supply voltage |
| Pin 37 | VSS — Ground |
| Pin 38 | RC1 — I/O port RC1 |
| Pin 39 | RC2 — I/O port RC2 |
| Pin 40 | RC3 — I/O port RC3 |
| Pin 41 | RC4 — I/O port RC4 |
| Pin 42 | VDD — Supply voltage |
| Pin 43 | VSS — Ground |
| Pin 44 | RD0 — I/O port RD0 |
| Pin 45 | RD1 — I/O port RD1 |
| Pin 46 | RD2 — I/O port RD2 |
| Pin 47 | RD3 — I/O port RD3 |
| Pin 48 | RD4 — I/O port RD4 |
| Pin 49 | RD5 — I/O port RD5 |
| Pin 50 | VSS — Ground |
| Pin 51 | RD6 — I/O port RD6 |
| Pin 52 | RD7 — I/O port RD7 |
| Pin 53 | RD8 — I/O port RD8 |
| Pin 54 | RD9 — I/O port RD9 |
| Pin 55 | RD10 — I/O port RD10 |
| Pin 56 | RD11 — I/O port RD11 |
| Pin 57 | RD12 — I/O port RD12 |
| Pin 58 | RD13 — I/O port RD13 |
| Pin 59 | RD14 — I/O port RD14 |
| Pin 60 | RD15 — I/O port RD15 |
| Pin 61 | VSS — Ground |
| Pin 62 | RE0 — I/O port RE0 |
| Pin 63 | RE1 — I/O port RE1 |
| Pin 64 | RE2 — I/O port RE2 |
| Pin 65 | RE3 — I/O port RE3 |
| Pin 66 | RE4 — I/O port RE4 |
| Pin 67 | RE5 — I/O port RE5 |
| Pin 68 | RE6 — I/O port RE6 |
| Pin 69 | RE7 — I/O port RE7 |
| Pin 70 | VDD — Supply voltage |
| Pin 71 | RF0 — I/O port RF0 |
| Pin 72 | RF1 — I/O port RF1 |
| Pin 73 | VDD — Supply voltage |
| Pin 74 | RF2 — I/O port RF2 |
| Pin 75 | RF3 — I/O port RF3 |
| Pin 76 | RF4 — I/O port RF4 |
| Pin 77 | RF5 — I/O port RF5 |
| Pin 78 | RF6 — I/O port RF6 |
| Pin 79 | RF7 — I/O port RF7 |
| Pin 80 | RF8 — I/O port RF8 |
| Pin 81 | VSS — Ground |
| Pin 82 | RG0 — I/O port RG0 |
| Pin 83 | RG1 — I/O port RG1 |
| Pin 84 | RG2 — I/O port RG2 |
| Pin 85 | RG3 — I/O port RG3 |
| Pin 86 | RG6 — I/O port RG6 |
| Pin 87 | RG7 — I/O port RG7 |
| Pin 88 | RG8 — I/O port RG8 |
| Pin 89 | RG9 — I/O port RG9 |
| Pin 90 | VDD — Supply voltage |
| Pin 91 | VSS — Ground |
| Pin 92 | RG12 — I/O port RG12 |
| Pin 93 | RG13 — I/O port RG13 |
| Pin 94 | RG14 — I/O port RG14 |
| Pin 95 | RG15 — I/O port RG15 |
| Pin 96 | AEREFM0 — Analog reference ground |
| Pin 97 | AVDD — Analog supply |
| Pin 98 | AVSS — Analog ground |
| Pin 99 | OSC1 — Crystal oscillator input |
| Pin 100 | OSC2 — Crystal oscillator output |
Typical Applications
PIC32MX675F512LT-80I/PF is suitable for 7 applications: Industrial Ethernet Gateway, USB HID / Device Peripheral, Building Automation Controller, POS Terminal / Embedded Payment Device, Embedded Web Server / IoT Edge Node, CAN-Connected Sensor Hub, Audio / Voice over IP Endpoint.
Industrial Ethernet Gateway
The PIC32MX675F512LT-80I/PF is well suited to industrial Ethernet gateways because it combines an integrated 10/100 Ethernet MAC with 128 KB of SRAM, which is sufficient to run Microchip's MPLAB Harmony TCP/IP stack alongside an RTOS. With 80 MIPS of throughput, the device can route Modbus/TCP, EtherNet/IP, or MQTT messages while servicing CAN, SPI sensors, and GPIOs simultaneously. The 8 DMA channels offload memory-to-memory and peripheral-to-memory transfers, reducing CPU load in high-traffic gateway designs.
Recommended
USB HID / Device Peripheral
The PIC32MX675F512LT-80I/PF integrates USB 2.0 Full-Speed OTG, allowing it to act as USB device, host, or On-the-Go without an external transceiver IC. The 80 MHz MIPS core and 128 KB RAM comfortably handle USB stacks, HID class drivers, and CDC ACM bridges, while the 53 GPIOs provide ample headroom for buttons, LEDs, and segment-LCD interfaces. The device's small-footprint TQFP-100 package suits compact USB peripherals such as HID input devices, custom instrumentation, and USB-to-UART bridges.
Recommended
Building Automation Controller
In building automation the PIC32MX675F512LT-80I/PF handles BACnet MS-TP or Modbus RTU over two CAN channels and four UART interfaces, while the Ethernet MAC provides BACnet/IP or web-server connectivity. The 16-channel 10-bit ADC at 1 Msps reads thermistor, humidity, and analog sensor channels, while the parallel master port drives external LCD or segment displays. Industrial-grade -40C to +85C operation and 2.5-3.6 V supply support 24V-bus systems via a step-down LDO.
Recommended
POS Terminal / Embedded Payment Device
POS terminals benefit from the PIC32MX675F512LT-80I/PF's Ethernet MAC for IP-based payment connectivity, USB OTG for PIN-pad or printer peripherals, and 128 KB SRAM for transaction buffers and TLS handshakes. The 512 KB Flash accommodates encrypted firmware images with Microchip's secure-boot extensions, while the 80 MHz MIPS core supports AES/SHA acceleration in software. The TQFP-100 package fits compact POS form factors.
Recommended
Embedded Web Server / IoT Edge Node
The PIC32MX675F512LT-80I/PF can host a small embedded web server using Microchip's Harmony Net Services, exposing REST endpoints or MQTT topics without external memory. 128 KB RAM is sufficient for a typical HTTP server with TLS lite, while the Ethernet MAC and 8 DMA channels offload TCP/IP packet handling. Industrial -40C to +85C operation and a 2.5-3.6 V supply suit factory-floor installations, while the 53 onboard ports interface directly to sensors and actuators.
Recommended
CAN-Connected Sensor Hub
With two independent CAN modules, the PIC32MX675F512LT-80I/PF acts as a CAN hub bridging sensor arrays on one bus with actuator controllers on another, or providing CAN-to-Ethernet/CAN-to-USB bridging. The 80 MHz MIPS core and 8 DMA channels handle CAN-FD payloads at 1 Mbps, while 16 ADC inputs digitize analog sensor data before forwarding on the bus. Industrial -40C to +85C operation and 2.5-3.6 V supply support vehicle and factory CAN bus environments.
Recommended
Audio / Voice over IP Endpoint
The PIC32MX675F512LT-80I/PF's 80 MIPS performance and 128 KB RAM are sufficient to run VoIP signaling stacks (SIP) and small audio buffering, while the integrated Ethernet MAC provides IP connectivity and the 16-bit ADC could digitize microphone inputs at voice sample rates. The 2.5-3.6 V supply and small TQFP-100 package suit compact desk-phone or intercom form factors. Designers should pair with an external audio codec such as the AIC23B for full-duplex voice.
Recommended
Recommended Products Summary
Engineering reference data for PIC32MX675F512LT-80I/PF — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC32MX675F512L-80I/PF | PIC32MX675F256LT-80I/PF | PIC32MX575F512LT-80I/PF | PIC32MX664F128LT-I/PF | PIC32MX460F512LT-80I/PT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | TQFP-100 (PF) 14x14 mm | TQFP-100 (PF) - same | TQFP-100 (PF) - same | TQFP-100 (PF) - same | TQFP-100 (PF) - same | TQFP-100 (PT) - same |
| Core | MIPS32 M4K | MIPS32 M4K | MIPS32 M4K | MIPS32 M4K | MIPS32 M4K | MIPS32 M4K |
| Max Frequency | 80 MHz | 80 MHz | 80 MHz | 80 MHz | 80 MHz | 80 MHz |
| Flash | 512 KB | 512 KB | 256 KB (-50%) | 512 KB | 128 KB (-75%) | 512 KB |
| SRAM | 128 KB | 128 KB | 64 KB (-50%) | 128 KB | 32 KB (-75%) | 32 KB (-75%) |
| Ethernet MAC | 10/100 integrated | 10/100 integrated | 10/100 integrated | None | 10/100 integrated | None |
| USB OTG | 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 | USB 2.0 FS OTG |
| Supply Voltage | 2.5 V to 3.6 V | 2.5 V to 3.6 V | 2.5 V to 3.6 V | 2.5 V to 3.6 V | 2.5 V to 3.6 V | 2.3 V to 3.6 V |
| Approx Unit Price (qty 100) | USD 7.30 | USD 7.10 | USD 6.50 | USD 6.80 | USD 5.95 | USD 6.20 |
Key Differentiators
- Integrated 10/100 Ethernet MAC plus dual CAN modules in a single TQFP-100 device (vs PIC32MX575F512LT-80I/PF)
- Tape and reel packaging for high-volume SMT assembly (vs PIC32MX675F512L-80I/PF)
- Industry-standard MIPS32 M4K core with mature MPLAB Harmony software stack (vs PIC32MX664F128LT-I/PF)
Design Notes
The PIC32MX675F512LT-80I/PF requires separate analog and digital supply pins (AVDD/AVSS, VDD/VSS). AVDD must be tied to the same 3.3 V rail as VDD, but a ferrite bead plus 10 uF + 0.1 uF decoupling network on AVDD is recommended to keep ADC reference clean. A common-mode choke between AVDD and VDD reduces ADC noise coupling by 10-15 dB. Decouple each VDD pin with its own 0.1 uF ceramic placed within 5 mm of the pin - never share a single decoupling capacitor across multiple VDD pins.
For the TQFP-100 (PF) 14x14 mm package, use a 4-layer PCB stack-up with a continuous ground plane on layer 2 to provide both thermal dissipation and controlled impedance for high-speed signals. The Ethernet RMII traces must be 50 ohm single-ended, length-matched within 50 mils, and routed on the top layer with the ground plane 0.2 mm below. Use a 1:1 Ethernet transformer on the MDI lines with center taps tied to a clean 2.5 V or 3.3 V via a 49.9 ohm + 0.1 uF network per IEEE 802.3.
Do not enable the on-chip Ethernet MAC without a 50 MHz or 25 MHz reference clock on the ERCLK pin - the MAC requires an external PHY reference and will not lock without it. Setting OSCCON for the primary oscillator with PLL must follow the unlock sequence in Section 6 of the PIC32MX5XX6XX7XX datasheet; failures typically show as a runaway clock rather than a clean error. Pin 99/100 (OSC1/OSC2) should drive a fundamental-mode crystal with load capacitors sized per crystal datasheet, typically 22 pF for an 8 MHz crystal.
