PIC32MX675F512HT-80I/PT - 80MHz, 512KB Flash MCU | Microchip
MPN: PIC32MX675F512HT-80I/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $12.95 | $12.95 |
| 10 | $11.78 | $117.80 |
| 100 | $10.45 | $1,045.00 |
| 500 | $9.32 | $4,660.00 |
| 1,000 | $8.27 | $8,270.00 |
PIC32MX675F512HT-80I/PT Overview
A 32-bit microcontroller (MCU) is a microprocessor core integrated with program memory (Flash), data memory (SRAM), and peripherals (UART, SPI, I2C, timers, ADC, communication controllers) on a single chip. The PIC32MX family is positioned in the hierarchy as follows: PIC32MX -> 32-bit MCU -> microcontroller -> embedded processor -> semiconductor. Microchip's PIC32MX6xx/7xx sub-family specifically targets connectivity applications by integrating Ethernet and USB on-chip, eliminating the need for external controllers and reducing BOM and board area.
Key features of the PIC32MX675F512HT-80I/PT include an integrated 10/100 Mbit Ethernet MAC with RMII/MII PHY interface, USB 2.0 full-speed OTG, 16-channel 10-bit 1 Msps ADC, five 16-bit timers/counters, four UART, three SPI, two I2C, and 53 general-purpose I/O pins. The 80 MHz core delivers 1.56 DMIPS/MHz, supporting DSP extensions for signal-processing workloads.
The PIC32MX6xx architecture uses a 5-stage pipeline Harvard core with hardware multiply/divide and DSP ASE, allowing deterministic interrupt response and efficient C-language execution. The wide peripheral set and dual connectivity (Ethernet + USB) make it well suited for IoT gateways and industrial control where multiple communication interfaces are required.
Typical applications include industrial IoT gateways, USB-enabled embedded devices, Ethernet-attached sensor hubs, HMI touch panels, and consumer electronics with web configuration interfaces. The 512 KB Flash supports over-the-air (OTA) firmware updates with room for dual-image bootloaders.
When designing with this MCU, allocate at least 64 KB of Flash for the MPLAB Harmony framework if Ethernet/USB stacks are enabled. Use the integrated PHY clock to free an oscillator pin and add an external 25 MHz crystal directly between OSC1/OSC2 with appropriate load capacitors for Ethernet operation.
Drop-in alternatives for PIC32MX675F512HT-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 PIC32MX675F512HT-80I/PT (same form factor and footprint) — differing in Package, ADC, Timers, Operating Temperature, Core Architecture.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC32MX675F512H-80I/PT
✅ Drop-In✓ In Stock
$8.42 / Unit
View Datasheet →PIC32MX675F512HT-80I/MR
✅ Drop-In✓ In Stock
$6.45 / Unit
View Datasheet →PIC32MX575F512H-80I/PT
✅ Drop-In✓ In Stock
$5.11 / Unit
View Datasheet →PIC32MX675F256H-80I/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX460F512LT-80I/PT
✅ Drop-In✓ In Stock
$6.85 / Unit
View Datasheet →PIC32MX675F512HT-80I/PT Maximum Ratings & Electrical Characteristics
| Core Architecture | MIPS32 M4K 32-bit RISC |
| Maximum CPU Frequency | 80 MHz |
| Program Memory (Flash) | 512 KB (512K x 8) |
| Data Memory (SRAM) | 128 KB |
| Auxiliary RAM | 64 KB |
| Supply Voltage | 2.3 V to 3.6 V |
| I/O Pins | 53 |
| Package | 64-TQFP (10 x 10 mm) |
| Ethernet MAC | 10/100 Mbit integrated |
| USB Controller | USB 2.0 Full-Speed Host/Device/OTG |
| ADC | 10-bit, 16-channel, 1 Msps |
| Operating Temperature | -40 C to +85 C (industrial) |
| Mounting Type | Surface Mount |
| MSL Level | 3 (168 hours) |
| Lead-Free / RoHS | Lead-free, RoHS compliant |
PIC32MX675F512HT-80I/PT 64-tqfp (10 x 10 mm) Pin Configuration Guide
Pin configuration for PIC32MX675F512HT-80I/PT (64-tqfp (10 x 10 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 PIC32MX675F512HT-80I/PT.
Refer to the datasheet for full pin configuration.
Typical Applications
PIC32MX675F512HT-80I/PT is suitable for 6 applications: Industrial IoT Gateway, USB-Enabled Embedded Device, Ethernet-Attached Sensor Hub, HMI Touch Panel Controller, Consumer Web-Configuration Device, Motor Control Front-End.
Industrial IoT Gateway
The PIC32MX675F512HT-80I/PT fits industrial IoT gateways thanks to its integrated 10/100 Ethernet MAC and USB 2.0 OTG, which eliminate external connectivity ICs. The 80 MHz MIPS M4K core runs the MPLAB Harmony TCP/IP stack with 124 DMIPS throughput, while 512 KB Flash holds the full Harmony framework plus application logic with room for OTA dual-image bootloaders. The 128 KB SRAM plus 64 KB auxiliary buffer RAM is sufficient for concurrent Ethernet, USB, and Modbus TCP workloads. Operating from 2.3 V to 3.6 V at -40 C to +85 C, it tolerates industrial supply rails and ambient temperatures without derating.
Recommended
USB-Enabled Embedded Device
For USB peripherals such as HID controllers, data loggers, and CDC devices, the PIC32MX675F512HT-80I/PT provides USB 2.0 Full-Speed Host/Device/OTG directly on-chip. The 53 I/O pins drive user-interface buttons and LED indicators, while the 10-bit 1 Msps ADC samples analog sensors at high rate. Compared to PIC32MX5xx parts, this device adds the Ethernet MAC, but for USB-only designs the larger 512 KB Flash accommodates composite USB stacks plus vendor-specific class firmware in a single image.
Recommended
Ethernet-Attached Sensor Hub
Sensor hubs that aggregate Modbus, analog, and digital I/O over Ethernet benefit from the PIC32MX675F512HT-80I/PT's 10/100 Ethernet MAC paired with the 16-channel 10-bit ADC. The 80 MHz core runs the Harmony TCP/IP server stack with concurrent web server handling, while 512 KB Flash stores HTTP configuration pages, JSON telemetry templates, and the sensor driver library. Industrial -40 C to +85 C operation supports outdoor or factory-floor enclosures, and the 64-TQFP package provides easy hand-solder rework for low-volume industrial runs.
Recommended
HMI Touch Panel Controller
The PIC32MX675F512HT-80I/PT's 80 MHz core and 53 I/O pins are well matched to small HMI panels with TFT displays, capacitive touch ICs, and rotary encoders. Its 128 KB main RAM holds double-buffered framebuffers for QVGA displays, and the 512 KB Flash accommodates LVGL or emWin graphics libraries. The USB OTG port enables firmware updates from a USB stick during field service - a common requirement for installed HMI panels that lack Ethernet access.
Recommended
Consumer Web-Configuration Device
Consumer products with embedded web configuration (printers, IP cameras, smart appliances) leverage the PIC32MX675F512HT-80I/PT's integrated Ethernet MAC plus USB 2.0 to provide both wired and USB interfaces without external controllers. The 80 MHz MIPS M4K core executes the Harmony HTTP server with AJAX-style configuration pages, while 512 KB Flash holds HTML assets and embedded JavaScript. The 2.3 V to 3.6 V supply range lets designers reuse the same MCU across 3.3 V-only and wide-tolerance 5 V USB-powered variants.
Recommended
Motor Control Front-End
Although the PIC32MX675F512HT-80I/PT lacks dedicated motor-control PWMs, it serves as an Ethernet-connected supervisory front-end for industrial motor drives. It reads encoder feedback via SPI or quadrature input, monitors motor current via the 16-channel ADC, and reports status over Modbus TCP. Its -40 C to +85 C industrial temperature range and 2.3 V to 3.6 V supply let it mount adjacent to power stages with appropriate isolation.
Recommended
Recommended Products Summary
Engineering reference data for PIC32MX675F512HT-80I/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC32MX675F512H-80I/PT | PIC32MX675F512HT-80I/MR | PIC32MX575F512H-80I/PT | PIC32MX675F256H-80I/PT | PIC32MX460F512LT-80I/PT |
|---|---|---|---|---|---|---|
| Package | 64-TQFP (PT) 10x10 mm | 64-TQFP (PT) 10x10 mm - same | 64-QFN (MR) 9x9 mm - different | 64-TQFP (PT) 10x10 mm - same | 64-TQFP (PT) 10x10 mm - same | 64-TQFP (PT) 10x10 mm - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core / Max Frequency | MIPS32 M4K / 80 MHz | MIPS32 M4K / 80 MHz | MIPS32 M4K / 80 MHz | MIPS32 M4K / 80 MHz | MIPS32 M4K / 80 MHz | MIPS32 M4K / 80 MHz |
| Flash Memory | 512 KB | 512 KB | 512 KB | 512 KB | 256 KB (-50%) | 512 KB |
| SRAM | 128 KB + 64 KB aux | 128 KB + 64 KB aux | 128 KB + 64 KB aux | 128 KB + 64 KB aux | 64 KB + 64 KB aux (-50%) | 128 KB + 0 aux |
| Ethernet MAC | 10/100 integrated | 10/100 integrated | 10/100 integrated | Not present | 10/100 integrated | Not present |
| USB Controller | 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 |
| I/O Pins | 53 | 53 | 53 | 53 | 53 | 53 |
| Supply Voltage | 2.3 V to 3.6 V | 2.3 V to 3.6 V | 2.3 V to 3.6 V | 2.3 V to 3.6 V | 2.3 V to 3.6 V | 2.3 V to 3.6 V |
| Operating Temperature | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
| Lifecycle Status | Active | Active | Active | Active | Active | Active |
Key Differentiators
- Integrated Ethernet MAC plus USB 2.0 OTG on the same die (vs PIC32MX575F512H-80I/PT)
- Doubled program memory versus the lower-cost variant (vs PIC32MX675F256H-80I/PT)
- 64 KB extra auxiliary RAM for Ethernet/USB packet buffers (vs PIC32MX460F512LT-80I/PT)
- Same silicon and identical die layout (vs PIC32MX675F512H-80I/PT)
Design Notes
The PIC32MX675F512HT-80I/PT 64-TQFP package requires a small PCB footprint but is hand-solderable with proper pad design. Provide a solid ground plane on the top layer directly under the device and stitch vias at 5 mm spacing around the perimeter to reduce EMI on the 80 MHz core clock. The 10x10 mm body allows compact routing but the inner-pin escape must use microvias or thin traces (4 mil/0.1 mm) to fan out all 53 I/O. Place the 25 MHz Ethernet PHY crystal within 5 mm of OSC1/OSC2 and guard-trace both signals to ground per the PIC32MX5XX/6XX/7XX family datasheet layout recommendations.
Estimated: The PIC32MX675F512HT-80I/PT active supply current at 80 MHz with Ethernet + USB active is approximately 80 mA typical, plus PHY and USB transceiver draw. Total 3.3 V rail budget should be at least 200 mA with 10 percent margin. Use a low-noise LDO (e.g., Microchip MCP1700 or MIC29150) followed by a ferrite bead and 10 uF ceramic + 100 nF decoupling at each VDD/VSS pair. Place 100 nF capacitors within 3 mm of every VDD pin; the 64-TQFP has multiple VDD pins that must each be decoupled independently to prevent logic-level glitches under high-speed switching.
Do not confuse the PIC32MX675F512HT-80I/PT (64-TQFP, tape-and-reel) with the PIC32MX675F512HT-80I/MR (64-QFN). Both share silicon but the QFN land pattern is not pin-compatible with the TQFP; using one footprint for the other will short adjacent pins. Also, the '675' sub-family has integrated Ethernet - do not waste PCB area routing an external MAC. Finally, do not exceed 80 MHz instantaneous needs convert the '80I' suffix to '80V' for 5 V-tolerant variants. Validate the temperature grade: 'I' = -40 C to +85 C industrial, not -40 C to +125 C extended.
The integrated Ethernet MAC uses RMII or MII to an external PHY; route the 50 MHz RMII clock as a length-matched group and keep RMII traces under 50 mm with 50 ohm characteristic impedance on a 4-layer stackup. For USB, the 12 MHz Full-Speed clock and DP/DM differential pair must be 90 ohm differential and length-matched within 150 mil (3.8 mm). Place common-mode chokes on DP/DM if the device is near switching noise sources. Keep the 25 MHz PHY crystal traces short and symmetric; ground the can to reduce radiated emissions.
Compliance Information
RoHS and lead-free confirmed per Microchip product page and DigiKey listing. AEC-Q100 is not applicable for industrial-grade MCUs; automotive designs should use PIC32MX variants with explicit 'AEC-Q100' marking. Halogen-free status not specified in distributor data - consult Microchip environmental compliance documentation.
