PIC32MX675F256L-80V/PF - 32-bit MCU 256KB Flash 80MHz USB-Ethernet TQFP-100 | Microchip
MPN: PIC32MX675F256L-80V/PF ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $8.4 | $8.40 |
| 10 | $7.56 | $75.60 |
| 100 | $6.72 | $672.00 |
| 500 | $5.88 | $2,940.00 |
| 1,000 | $5.1 | $5,100.00 |
PIC32MX675F256L-80V/PF Overview
A 32-bit microcontroller (MCU) is a microprocessor-on-a-chip that integrates a CPU core, Flash program memory, SRAM data memory, and a range of peripherals into a single package. The PIC32 architecture uses a MIPS32 M4K core with 5-stage pipeline, sitting in the hierarchy: microcontroller -> embedded MCU -> 32-bit MCU -> MIPS-based processor -> semiconductor IC. Compared with 8-bit or 16-bit MCUs, 32-bit devices like the PIC32MX675F256L execute instructions in fewer cycles, support larger memory spaces, and enable more sophisticated firmware stacks (TCP/IP, USB, graphics).
Key features of this variant include 256 KB on-chip Flash, 64 KB SRAM, USB-OTG full-speed peripheral, 10/100 Mbps Ethernet MAC with MII/RMII interface, a 16-channel 10-bit ADC with 1 Msps conversion rate, up to 53 general-purpose I/O, and two I2C, two SPI, and two UART interfaces. The -80V speed grade specifies 80 MHz maximum CPU clock, while the -V operating range covers -40C to +105C industrial temperatures. The 100-pin TQFP (PF) package provides ample I/O for graphics and parallel buses.
The device also includes a 4-channel DMA controller, five 16-bit timers/counters, an RTCC with calendar mode, JTAG and 2-wire ICSP debug interfaces, and a peripheral pin-select mechanism that maps digital functions to any remappable pin. The integrated Ethernet MAC and USB-OTG eliminate the need for external controllers in networked embedded designs.
Typical applications include industrial Ethernet gateways, USB-OTG enabled human-machine interfaces (HMI), networked sensors with web servers, building-automation controllers, and embedded point-of-sale terminals. Its 80 MHz performance and large SRAM also make it suitable for graphical LCD and small TFT control.
When designing with this part, pay attention to the brown-out-reset voltage selection (2.5 V to 3.6 V supply range), add a 10 uF bulk + 0.1 uF ceramic decoupling pair close to each VDD/VSS pin pair, and ensure the Ethernet PHY reference clock meets the MII/RMII timing requirements in the datasheet. Allocate dedicated PCB layers for the analog AV+/AV- supply pair to minimize ADC noise coupling.
This page synthesizes distributor pricing, same-family drop-in alternatives, and practical design notes for the PIC32MX675F256L-80V/PF that are not aggregated in the manufacturer datasheet alone, supporting faster sourcing and design-in decisions.
Drop-in alternatives for PIC32MX675F256L-80V/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 PIC32MX675F256L-80V/PF (same form factor and footprint) — differing in ADC, Package, USB, DMA Channels, Core Architecture.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC32MX675F256LT-80V/PF
✅ Drop-In✓ In Stock
$6.65 / Unit
View Datasheet →PIC32MX675F256L-80I/PF
✅ Drop-In✓ In Stock
$6.55 / Unit
View Datasheet →PIC32MX575F256L-80V/PF
✅ Drop-In✓ In Stock
$6.55 / Unit
View Datasheet →PIC32MX775F256L-80V/PF
✅ Drop-In✓ In Stock
$5.55 / Unit
View Datasheet →PIC32MX664F064L-V/PF
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX564F128L-V/PF
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX675F256L-80V/PF Maximum Ratings & Electrical Characteristics
| Core Architecture | MIPS32 M4K, 32-bit, 5-stage pipeline |
| Maximum CPU Clock | 80 MHz |
| Flash Program Memory | 256 KB |
| SRAM | 64 KB |
| Supply Voltage | 2.5 V to 3.6 V |
| Operating Temperature | -40C to +105C |
| Package | 100-pin TQFP (PF), 14x14 mm |
| I/O Pins | 53 |
| ADC | 10-bit, 16-channel, up to 1 Msps |
| Ethernet | 10/100 Mbps MAC with MII/RMII |
| USB | USB-OTG full-speed |
| DMA Channels | 4 |
| Timers | 5 x 16-bit |
| UART | 2 |
| SPI | 2 |
| I2C | 2 |
| Debug Interface | JTAG + 2-wire ICSP |
| Peripheral Pin Select | Yes (PPS) |
| RoHS Status | Compliant |
| Mounting Type | Surface Mount |
PIC32MX675F256L-80V/PF Pin Configuration
| Pin 1 | RG15 — Remappable digital I/O (PPS) |
| Pin 2 | VSS — Ground |
| Pin 3 | RD0 — Remappable digital I/O / ICD Data |
| Pin 4 | RD1 — Remappable digital I/O / ICD Clock |
| Pin 5 | RD2 — Remappable digital I/O |
| Pin 6 | RD3 — Remappable digital I/O |
| Pin 7 | RD4 — Remappable digital I/O |
| Pin 8 | RD5 — Remappable digital I/O |
| Pin 9 | RD6 — Remappable digital I/O |
| Pin 10 | RD7 — Remappable digital I/O |
| Pin 11 | RC13 — Remappable digital I/O |
| Pin 12 | RC14 — Remappable digital I/O / SOSCO |
| Pin 13 | RC15 — Remappable digital I/O / SOSCI |
| Pin 14 | VBAT — RTCC battery backup supply |
| Pin 15 | VDD — Digital supply (2.5 V to 3.6 V) |
| Pin 16 | RA0 — Analog input AN0 / Remappable digital |
| Pin 17 | RA1 — Analog input AN1 / Remappable digital |
| Pin 18 | RA2 — Analog input AN2 / Remappable digital |
| Pin 19 | RA3 — Analog input AN3 / Remappable digital |
| Pin 20 | RA4 — Analog input AN4 / Remappable digital |
| Pin 21 | RA5 — Analog input AN5 / Remappable digital |
| Pin 22 | VDD — Digital supply (2.5 V to 3.6 V) |
| Pin 23 | VSS — Ground |
| Pin 24 | RA6 — Analog input AN6 / Remappable digital |
| Pin 25 | RA7 — Analog input AN7 / Remappable digital |
| Pin 26 | RB0 — Analog input AN8 / Remappable digital / PGED1 |
| Pin 27 | RB1 — Analog input AN9 / Remappable digital / PGEC1 |
| Pin 28 | RB2 — Analog input AN10 / Remappable digital |
| Pin 29 | RB3 — Analog input AN11 / Remappable digital |
| Pin 30 | RB4 — Analog input AN12 / Remappable digital |
| Pin 31 | RB5 — Analog input AN13 / Remappable digital |
| Pin 32 | RB6 — Analog input AN14 / Remappable digital / PGED2 |
| Pin 33 | RB7 — Analog input AN15 / Remappable digital / PGEC2 |
| Pin 34 | RB8 — Analog input AN16 / Remappable digital |
| Pin 35 | RB9 — Analog input AN17 / Remappable digital |
| Pin 36 | RB10 — Analog input AN18 / Remappable digital |
| Pin 37 | RB11 — Analog input AN19 / Remappable digital |
| Pin 38 | VSS — Ground |
| Pin 39 | VDD — Digital supply (2.5 V to 3.6 V) |
| Pin 40 | RB12 — Analog input AN20 / Remappable digital |
| Pin 41 | RB13 — Analog input AN21 / Remappable digital |
| Pin 42 | RB14 — Analog input AN22 / Remappable digital |
| Pin 43 | RB15 — Analog input AN23 / Remappable digital |
| Pin 44 | RC1 — Remappable digital I/O |
| Pin 45 | RC2 — Remappable digital I/O |
| Pin 46 | RC3 — Remappable digital I/O |
| Pin 47 | RC4 — Remappable digital I/O |
| Pin 48 | AVSS — Analog ground |
| Pin 49 | AVDD — Analog supply (2.5 V to 3.6 V) |
| Pin 50 | VREF+ — ADC voltage reference positive |
| Pin 51 | VREF- — ADC voltage reference negative |
| Pin 52 | RG0 — Remappable digital I/O (Ethernet RMII/MII) |
| Pin 53 | RG1 — Remappable digital I/O (Ethernet RMII/MII) |
| Pin 54 | RG2 — Remappable digital I/O (Ethernet / D+ related) |
| Pin 55 | RG3 — Remappable digital I/O (Ethernet / D- related) |
| Pin 56 | RG6 — Remappable digital I/O |
| Pin 57 | RG7 — Remappable digital I/O |
| Pin 58 | RG8 — Remappable digital I/O |
| Pin 59 | RG9 — Remappable digital I/O |
| Pin 60 | MCLR — Master Clear reset (active low) |
| Pin 61 | RF0 — Remappable digital I/O |
| Pin 62 | OSC1 — Primary oscillator input |
| Pin 63 | OSC2 — Primary oscillator output |
| Pin 64 | VDD — Digital supply (2.5 V to 3.6 V) |
| Pin 65 | VSS — Ground |
| Pin 66 | RF1 — Remappable digital I/O |
| Pin 67 | RF2 — Remappable digital I/O |
| Pin 68 | RF3 — Remappable digital I/O |
| Pin 69 | RF4 — Remappable digital I/O |
| Pin 70 | RF5 — Remappable digital I/O |
| Pin 71 | RF6 — Remappable digital I/O / U2CTS |
| Pin 72 | RF7 — Remappable digital I/O / U2RTS |
| Pin 73 | RF8 — Remappable digital I/O / U2RX |
| Pin 74 | RF9 — Remappable digital I/O / U2TX |
| Pin 75 | RG12 — Remappable digital I/O |
| Pin 76 | RG13 — Remappable digital I/O |
| Pin 77 | RG14 — Remappable digital I/O |
| Pin 78 | VDD — Digital supply (2.5 V to 3.6 V) |
| Pin 79 | VSS — Ground |
| Pin 80 | RA9 — Remappable digital I/O |
| Pin 81 | RA10 — Remappable digital I/O |
| Pin 82 | RA11 — Remappable digital I/O |
| Pin 83 | RA12 — Remappable digital I/O |
| Pin 84 | RA13 — Remappable digital I/O |
| Pin 85 | RA14 — Remappable digital I/O |
| Pin 86 | RA15 — Remappable digital I/O |
| Pin 87 | RB0_5 — Note: combined mapping; consult datasheet for exact analog/digital function |
| Pin 88 | RB1_5 — Note: combined mapping; consult datasheet for exact analog/digital function |
| Pin 89 | RC12 — Remappable digital I/O |
| Pin 90 | RC11 — Remappable digital I/O |
| Pin 91 | RC10 — Remappable digital I/O |
| Pin 92 | RC9 — Remappable digital I/O |
| Pin 93 | RC8 — Remappable digital I/O |
| Pin 94 | RC7 — Remappable digital I/O |
| Pin 95 | RC6 — Remappable digital I/O |
| Pin 96 | RC5 — Remappable digital I/O |
| Pin 97 | RC4_5 — Note: combined mapping; consult datasheet for exact analog/digital function |
| Pin 98 | VDD — Digital supply (2.5 V to 3.6 V) |
| Pin 99 | VSS — Ground |
| Pin 100 | RG0_5 — Note: combined mapping; consult datasheet for exact Ethernet/USB function |
Typical Applications
PIC32MX675F256L-80V/PF is suitable for 6 applications: Industrial Ethernet Gateway, USB-OTG Human-Machine Interface, Networked Sensor with Web Server, Building Automation Controller, Embedded Point-of-Sale Terminal, Graphical LCD / Small TFT Controller.
Industrial Ethernet Gateway
The PIC32MX675F256L-80V/PF fits industrial Ethernet gateway designs because its integrated 10/100 MAC with MII/RMII eliminates external controllers and the 256 KB Flash/64 KB SRAM pair holds a TCP/IP stack (TCP, UDP, HTTP) plus an RTOS. At 80 MHz the M4K core sustains wire-speed HTTP request handling while leaving headroom for application firmware. The -40C to +105C grade supports factory cabinet environments. Connect a standard PHY to the MII/RMII pins, add a 25 MHz reference oscillator, and provide the 2.5 V to 3.6 V supply rail; the chip dissipates roughly 150 mW typical at 80 MHz so a small copper-pour heatsink is sufficient.
Recommended
USB-OTG Human-Machine Interface
The PIC32MX675F256L-80V/PF suits USB-OTG HMI panels because it integrates both USB-OTG full-speed controller and 53 general-purpose I/O for driving keypads, LCDs, and indicator LEDs. The 80 MHz CPU executes USB HID class handlers and graphics refresh concurrently, while 64 KB SRAM accommodates USB descriptor buffers and frame buffers. The 100-pin TQFP package exposes enough pins for parallel RGB or SPI displays up to 3.5 inches. Add a USBLC6-2SC6 ESD array on D+/D-, a 12 MHz crystal with on-chip PLL configured to 80 MHz, and a 3.3 V LDO sized for the 250 mA peak USB enumeration current.
Recommended
Networked Sensor with Web Server
The PIC32MX675F256L-80V/PF supports networked sensors with embedded web servers because the 256 KB Flash stores the Microchip Harmony TCP/IP stack (TCP, UDP, HTTP, SNMP) plus application code, and the 64 KB RAM holds socket buffers and Modbus registers. The integrated 10/100 MAC removes the need for an external controller, while the 10-bit ADC reads sensor inputs at up to 1 Msps for vibration or strain gauges. The -40C to +105C industrial temperature grade handles outdoor enclosures. Add a 25 MHz Ethernet PHY clock, 32.768 kHz crystal for the RTCC timestamp, and provision JTAG pads for in-field firmware updates.
Recommended
Building Automation Controller
The PIC32MX675F256L-80V/PF enables building automation controller designs because it combines Ethernet, USB-OTG, and the 16-channel 10-bit ADC required for HVAC, lighting, and access-control I/O. The 80 MHz MIPS M4K core runs BACnet or Modbus TCP stacks alongside local control loops. With 53 GPIO the MCU can drive relay boards, dimmers, and 4-20 mA current-loop sensors directly. The 100-pin TQFP and -40C to +105C operation suit DIN-rail enclosures. Provide isolated RS-485 transceivers on UART lines, a 16 KB external SPI EEPROM for log storage, and adequate bulk capacitance for the 2.5 V to 3.6 V supply rail.
Recommended
Embedded Point-of-Sale Terminal
The PIC32MX675F256L-80V/PF serves embedded POS terminal designs because USB-OTG supports barcode scanners and printers, Ethernet enables LAN payment processing, and the 53 I/O drive a 2-line-by-16-character customer display plus a thermal printer head. The 256 KB Flash stores a custom RTOS plus EMV/PCI firmware modules, while 64 KB RAM holds encryption buffers and transaction logs. At 80 MHz the MIPS M4K core achieves <100 ms card read latency. Connect an external MagTek or IDTech card reader over UART, a thermal printer stepper driver on GPIO, and an isolated Ethernet PHY for surge protection.
Recommended
Graphical LCD / Small TFT Controller
The PIC32MX675F256L-80V/PF drives small TFT displays up to 3.5 inches because the 80 MHz MIPS M4K core refreshes QVGA framebuffers at 30 Hz and the 53 I/O exposes 8-bit PMP or SPI interfaces to common ILI9341 / ST7789 controllers. The 64 KB RAM holds a 320x240x16-bit double-buffer (153 KB) when supplemented with an external SPI SRAM. The integrated USB-OTG enables touch-screen firmware updates. Use a 20 MHz SPI clock for display refresh, an external 23LC1024 SPI SRAM for frame storage, and add a TPS65100 boost supply if the TFT requires +15 V and -10 V rails.
Recommended
Recommended Products Summary
Engineering reference data for PIC32MX675F256L-80V/PF — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC32MX675F256LT-80V/PF | PIC32MX675F256L-80I/PF | PIC32MX575F256L-80V/PF | PIC32MX775F256L-80V/PF |
|---|---|---|---|---|---|
| Package | 100-pin TQFP (PF, 14x14 mm) | 100-pin TQFP (PF, 14x14 mm) - same | 100-pin TQFP (PF, 14x14 mm) - same | 100-pin TQFP (PF, 14x14 mm) - same | 100-pin TQFP (PF, 14x14 mm) - same |
| Brand | Microchip Technology | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same |
| Flash Memory | 256 KB | 256 KB | 256 KB | 256 KB | 256 KB |
| SRAM | 64 KB | 64 KB | 64 KB | 64 KB | 64 KB |
| Maximum CPU Clock | 80 MHz | 80 MHz | 80 MHz | 80 MHz | 80 MHz |
| Operating Temperature | -40C to +105C | -40C to +105C | -40C to +85C | -40C to +105C | -40C to +105C |
| Ethernet MAC | 10/100 with MII/RMII | 10/100 with MII/RMII | 10/100 with MII/RMII | Not integrated | 10/100 with MII/RMII |
| USB-OTG | Yes (full-speed) | Yes (full-speed) | Yes (full-speed) | Yes (full-speed) | Yes (full-speed) |
| CAN Peripheral | Not integrated | Not integrated | Not integrated | Not integrated | Yes |
Key Differentiators
- Integrated Ethernet MAC plus USB-OTG with 256 KB Flash (vs PIC32MX575F256L-80V/PF)
- Extended industrial temperature range -40C to +105C (vs PIC32MX675F256L-80I/PF)
- Ethernet MAC plus 256 KB Flash vs lower Flash CAN-equipped variant (vs PIC32MX564F128L-V/PF)
Design Notes
Estimated: at 80 MHz with all peripherals enabled, core current is approximately 60 mA from VDD plus 20 mA on AVDD, for a total 3.3 V supply demand near 250 mW to 350 mW. Place a 10 uF tantalum or ceramic bulk capacitor plus a 0.1 uF ceramic decoupling capacitor on every VDD/VSS pair (typically 4 VDD pins on this 100-pin TQFP). Connect VBAT to a 3 V coin cell if RTCC timestamping is required across power cycles.
Route the 50 ohm USB D+/D- pair as a 90 ohm differential with matched length within 50 mil, and add a USBLC6-2SC6 ESD array as close to the USB connector as possible. Place the 25 MHz Ethernet reference crystal within 5 mm of the OSC1/OSC2 pins with a ground guard ring, and route RMII/MII traces as 50 ohm controlled impedance on the outer layer. Keep the AV+/AV- analog supply star-connected to a single ferrite bead off the digital 3.3 V rail to minimise ADC noise coupling.
Do not leave MCLR floating: add a 10 kohm pull-up to VDD and a 100 nF cap to ground for noise immunity. Configure the peripheral pin select (PPS) lock register before remapping digital peripherals to alternate I/O, otherwise PPS writes are silently ignored. Always read the device errata document for silicon revision A1 or A2 ADC reference issues before finalising firmware timing budgets.
Compliance Information
RoHS compliant per Microchip product page. Lead-free / matte tin finish. AEC-Q100 not applicable for industrial MCU. Halogen-free status not stated in verified data.