PIC32MX675F512LT-80V/PF - 32-bit MCU 512KB Flash USB-OTG Ethernet TQFP-100 | Microchip
MPN: PIC32MX675F512LT-80V/PF ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $13.42 | $13.42 |
| 10 | $12.05 | $120.50 |
| 100 | $10.75 | $1,075.00 |
| 500 | $9.42 | $4,710.00 |
| 1,000 | $8.2 | $8,200.00 |
PIC32MX675F512LT-80V/PF Overview
A PIC32 microcontroller is a 32-bit RISC MCU built on the MIPS architecture, bridging the gap between 8/16-bit legacy controllers and high-end ARM Cortex parts. Within the broader taxonomy, it sits at: MCU -> 32-bit MCU -> MIPS M4K core -> Microchip PIC32MX family -> connected peripheral segment. Designers select PIC32MX parts when they need deterministic real-time behavior, generous memory, and integrated connectivity in a single chip, supported by MPLAB X IDE, XC32 compiler, and MPLAB Harmony framework.
Key features of this variant include 53 general-purpose I/O pins, an 8-channel DMA controller for CPU-offload data movement, a hardware crypto engine for AES/DES/Triple-DES/SHA/MD5 acceleration, and multiple power management modes (Idle, Sleep, Deep Sleep with RTCC) that drop current consumption to single-digit microamp levels. The 12 KB auxiliary Flash boot block supports safe field firmware updates, while Fail-Safe Clock Monitor and Watchdog Timer provide system-level fault recovery.
Architecturally, the M4K core executes most instructions in a single cycle and supports the MIPS16e instruction set for code-density improvement. The peripheral bus matrix allows simultaneous DMA-driven Ethernet, USB, and ADC activity without CPU intervention, which is critical for gateway and HMI designs. The 100-pin TQFP footprint is pin-compatible with most PIC24/dsPIC DSC devices in the same family, simplifying PCB reuse when designs scale.
Typical applications include industrial Ethernet gateways, USB device nodes, embedded web servers, point-of-sale terminals, building automation controllers, and multi-protocol sensor hubs. The combination of Ethernet MAC and USB OTG makes it particularly attractive for connected peripherals that must bridge fieldbus traffic to local USB diagnostics. Designers building networked motor control or HVAC controllers also benefit from the on-chip crypto block for secure remote management.
When designing with this part, pay attention to decoupling: place a 0.1 uF ceramic bypass as close as possible to each AVDD/VDD pin pair, and add a bulk 10 uF tantalum near the regulator. For Ethernet, route the RMII/MII traces as a matched-length group (within 50 mil) and keep them away from switching noise sources. The PF suffix denotes the standard 100-pin TQFP without the extended-temperature option, so verify junction temperature in thermally constrained enclosures.
This page synthesizes distributor pricing, drop-in same-package alternatives drawn from the PIC32MX5/6/7 family, and practical design notes that go beyond what is printed in the Microchip datasheet.
Drop-in alternatives for PIC32MX675F512LT-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 PIC32MX675F512LT-80V/PF (same form factor and footprint) — differing in Package, ADC, USB, SPI, UART.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC32MX575F512LT-80V/PF
✅ Drop-In✓ In Stock
$7.92 / Unit
View Datasheet →PIC32MX675F512L-80V/PF
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX675F512LT-80I/PF
✅ Drop-In✓ In Stock
$6.05 / Unit
View Datasheet →PIC32MX675F512L-80V/PT
✅ Drop-In✓ In Stock
$6.74 / Unit
View Datasheet →PIC32MX675F512HT-80V/MR
✅ Drop-In✓ In Stock
$6.05 / Unit
View Datasheet →PIC32MX795F512LT-80V/PF
✅ Drop-In✓ In Stock
$6.9 / Unit
View Datasheet →PIC32MX675F512LT-80V/PF Maximum Ratings & Electrical Characteristics
| Core Architecture | MIPS32 M4K 32-bit RISC |
| Maximum CPU Clock | 80 MHz |
| Flash Program Memory | 512 KB |
| SRAM | 64 KB |
| Auxiliary Boot Flash | 12 KB |
| Supply Voltage (VDD) | 2.5 V to 3.6 V |
| Operating Temperature Range | -40 C to +105 C (V grade, industrial) |
| GPIO Count | 53 |
| ADC | 10-bit, up to 16 channels, 1 Msps |
| Ethernet MAC | 10/100 Mbit, MII/RMII interface |
| USB | USB 2.0 Full-Speed OTG |
| DMA Channels | 8 |
| I2C / SPI / UART | 2 / 2 / 4 |
| Hardware Crypto | AES, DES, 3DES, SHA-1/2, MD5 |
| Package | 100-pin TQFP (14x14 mm) |
| Mounting Type | Surface Mount |
| Lead-Free / RoHS | Yes |
| Instruction Set Support | MIPS32, MIPS16e (code compression) |
PIC32MX675F512LT-80V/PF 100-pin tqfp (14x14 mm) Pin Configuration Guide
Pin configuration for PIC32MX675F512LT-80V/PF (100-pin tqfp (14x14 mm) package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for PIC32MX675F512LT-80V/PF.
Refer to the datasheet for full pin configuration.
Typical Applications
PIC32MX675F512LT-80V/PF is suitable for 7 applications: Industrial Ethernet Gateway, USB-OTG Peripheral Bridge, Embedded Web Server / IoT Node, Point-of-Sale (POS) Terminal Controller, Building Automation Controller, Multi-Protocol Sensor Hub, Industrial HMI Touch Controller.
Industrial Ethernet Gateway
The PIC32MX675F512LT-80V/PF integrates a 10/100 Mbit Ethernet MAC with MII/RMII PHY interface, 512 KB Flash for the TCP/IP stack and an 8-channel DMA controller that offloads packet handling from the M4K core, making it ideal for industrial Ethernet gateways. At 80 MHz the CPU sustains multi-protocol Modbus TCP / EtherNet/IP bridging with sub-10 ms latency, while the 64 KB SRAM holds multiple concurrent sockets without external memory. The hardware AES/SHA block secures management-plane traffic without software crypto overhead, and the PF 100-pin TQFP keeps the gateway footprint within a compact DIN-rail module. Unlike an MCU without Ethernet, no external MAC chip is needed, reducing BOM cost by roughly USD 3-4 per node.
Recommended
USB-OTG Peripheral Bridge
The PIC32MX675F512LT-80V/PF includes a USB 2.0 Full-Speed On-The-Go controller that supports host, device and dual-role modes, allowing it to act as a USB bridge between legacy serial equipment and modern USB hosts. The 512 KB Flash stores the USB stack plus class drivers (CDC, HID, MSD), while 64 KB SRAM buffers HID reports and bulk transfers with minimal CPU intervention. The 53 GPIO and four UART modules support simultaneous RS-232/485 to USB bridging on a single board, replacing a USB-Serial chip plus a separate MCU. Industrial temperature grade -40 C to +105 C ensures stable operation in factory-floor installations exposed to heat sources and motor drives.
Recommended
Embedded Web Server / IoT Node
The 80 MHz M4K core combined with 512 KB Flash and the integrated Ethernet MAC allows the PIC32MX675F512LT-80V/PF to host a full HTTP server plus lightweight REST API in firmware without external memory. The 10-bit 1 Msps ADC samples up to 16 analog sensor channels for environment monitoring, while the DMA controller streams ADC conversions into RAM without CPU wake-ups, reducing power in sleep modes. Deep-Sleep mode with RTCC draws single-digit microamp current, making battery-backed sensor nodes practical for building automation and energy metering. Designers pair this part with Microchip's MPLAB Harmony TCP/IP Lite stack to ship a working web UI in days.
Recommended
Point-of-Sale (POS) Terminal Controller
In a POS terminal, the PIC32MX675F512LT-80V/PF drives a character or graphical LCD via the parallel master port, reads a keypad matrix through GPIO, manages a magnetic-stripe reader over UART, and connects to the store network via Ethernet for transaction settlement. The 512 KB Flash fits the payment stack plus secure-key storage with the hardware AES engine, while 64 KB SRAM holds transaction buffers and protocol state. The USB OTG controller also supports PIN-pad peripherals and printer interfaces on the same device, removing the need for a separate USB host chip. Industrial temperature operation handles the heat inside a sealed retail enclosure.
Recommended
Building Automation Controller
Building automation controllers aggregate HVAC, lighting and access-control sensor data and forward it over Ethernet or USB to a central BMS server, a job that fits the PIC32MX675F512LT-80V/PF's 80 MHz CPU, 53 GPIO, 16 ADC channels and 10/100 Ethernet MAC. The DMA controller offloads multi-channel ADC scanning into RAM for averaging and threshold detection, while the Fail-Safe Clock Monitor and Watchdog Timer ensure the controller recovers from brown-outs in unattended installations. Hardware crypto secures BACnet/IP and Modbus TCP traffic, and the 100-pin TQFP exposes enough I/O to drive multiple relay boards without external I/O expanders. Industrial -40 C to +105 C operation covers plant rooms and rooftop enclosures.
Recommended
Multi-Protocol Sensor Hub
The PIC32MX675F512LT-80V/PF can aggregate data from I2C sensors, SPI sensors and UART GPS receivers, then publish it over Ethernet or USB to a host. The dual I2C, dual SPI and four UART/I2S interfaces run concurrently with DMA offload, freeing the M4K core for protocol translation and edge processing. The 10-bit 1 Msps ADC samples analog sensors such as temperature, pressure and flow in parallel with digital data, while the hardware SHA block signs telemetry packets for secure upload. The 100-pin TQFP package gives 53 GPIO for status LEDs, pushbuttons and expansion headers, fitting into a compact DIN-rail or wall-mount sensor hub enclosure.
Recommended
Industrial HMI Touch Controller
Human-machine interfaces with 4.3 to 7 inch TFT displays use the PIC32MX675F512LT-80V/PF to drive the parallel master port (PMP) for fast TFT updates while scanning a touch controller over I2C and reporting status via Ethernet. The 512 KB Flash stores the GUI framework plus custom screens, while 64 KB SRAM holds the frame buffer for non-OS graphics libraries. The 16-channel ADC reads analog backlight current and supply voltages for diagnostics, and the hardware AES engine secures remote firmware updates over the network. The 100-pin TQFP provides enough GPIO to drive the display, touch, status LEDs and key matrix on a single board.
Recommended
Recommended Products Summary
Engineering reference data for PIC32MX675F512LT-80V/PF — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC32MX575F512LT-80V/PF | PIC32MX675F512L-80V/PF | PIC32MX675F512LT-80I/PF | PIC32MX795F512LT-80V/PF |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | TQFP-100 (PF, 14x14 mm) | TQFP-100 (PF, 14x14 mm) - same | TQFP-100 (PF, 14x14 mm) - same | TQFP-100 (PF, 14x14 mm) - same | TQFP-100 (PF, 14x14 mm) - same |
| Core | MIPS32 M4K, 32-bit | MIPS32 M4K, 32-bit - same | MIPS32 M4K, 32-bit - same | MIPS32 M4K, 32-bit - same | MIPS32 M4K, 32-bit - same |
| Maximum Clock | 80 MHz | 80 MHz - same | 80 MHz - same | 80 MHz - same | 80 MHz - same |
| Flash | 512 KB | 512 KB - same | 512 KB - same | 512 KB - same | 512 KB - same |
| SRAM | 64 KB | 64 KB - same | 64 KB - same | 64 KB - same | 128 KB (+100%) |
| Ethernet MAC | 10/100 Mbit | Not present | 10/100 Mbit - same | 10/100 Mbit - same | 10/100 Mbit - same |
| USB | USB 2.0 FS OTG | USB 2.0 FS Device only | USB 2.0 FS OTG - same | USB 2.0 FS OTG - same | USB 2.0 FS OTG - same |
| Operating Temperature | -40 C to +105 C (V grade) | -40 C to +105 C - same | -40 C to +105 C - same | -40 C to +85 C (I grade, narrower) | -40 C to +105 C - same |
| Approx. Unit Price (1k qty) | USD 8.20 | USD 7.20 (-12%) | USD 8.20 - same | USD 7.90 (-4%) | USD 9.45 (+15%) |
Key Differentiators
- Same-package MCU without Ethernet or USB OTG for cost-optimized builds (vs PIC32MX575F512LT-80V/PF)
- Industrial -40 C to +105 C temperature grade (vs PIC32MX675F512LT-80I/PF)
- Tape-and-reel packaging optimized for SMT lines (vs PIC32MX675F512L-80V/PF)
- 512 KB Flash with full peripheral set at lower cost than the 795 tier (vs PIC32MX795F512LT-80V/PF)
Design Notes
The PIC32MX675F512LT-80V/PF requires two distinct power rails: VDD at 2.5 V to 3.6 V for I/O and the internal regulator input, and a 1.8 V VCORE generated internally on the VCAP pins. Place a low-ESR 10 uF ceramic plus a 0.1 uF decoupling cap on each VDD pin and a 10 uF + 0.1 uF pair on each VCAP pin to keep the core regulator stable at 80 MHz operation. Sequence the I/O supply before the analog AVDD rail when designing for hot-plug safety.
The 100-pin TQFP (PF) package requires a 0.5 mm pitch land pattern with 0.3 mm wide pads and a 14x14 mm body; use 4-mil (0.1 mm) trace-and-space rules for fanout. Provide at least 8 via-in-pad or tented vias under the thermal pad to dissipate the 1 W typical consumption at 80 MHz. Keep the Ethernet MII/RMII traces as a matched-length group (within 50 mil tolerance) and route them on the top layer over a continuous ground plane to control EMI.
Estimated: a common mistake is leaving the JTAG TMS pin floating - this prevents Boundary Scan and may lock the device in reset. Tie TMS high through a 10 kohm pull-up to VDD. Another pitfall is forgetting to enable the on-chip LDO regulator in the DEVCFG1 fuse (POSCMOD and IESO bits); without proper configuration the part will fail to boot. Always program the configuration words at the start of every firmware build, and verify them with MPLAB X before programming.
Place the 25 MHz primary oscillator crystal within 5 mm of the OSCI/OSCO pins with short, ground-guard traces and a 1 Mohm parallel damping resistor. Use a dedicated analog ground island for the AVDD/AVSS pins, joining it to the digital ground at a single point near the VDD ferrite bead. Route the USB DP/DM traces as a 90 ohm differential pair with length matching within 150 mil, and keep them away from clock and switching power traces.
Compliance Information
Lead-free matte-tin plating per Microchip PF package suffix; RoHS and REACH compliant per Microchip product page. AEC-Q100 not applicable - this is a general-purpose MCU not qualified to automotive grade; for AEC-Q100 PIC32 options consider PIC32MX174/274 or PIC32MK family. Halogen-free and conflict-minerals compliant per Microchip corporate disclosures.
