PIC32MX675F512HT-80I/MR - 32-bit MCU, 80MHz, 512KB Flash, Ethernet, USB, CAN | Microchip
MPN： PIC32MX675F512HT-80I/MR ✓ 啟用中PIC32MX675F512HT-80I/MR 概覽
A 32-bit microcontroller (MCU) is an integrated circuit that combines a high-performance processor core, on-chip memory, and a rich set of peripherals to execute complex embedded software. Within the broader taxonomy, PIC32MX belongs to the MIPS-based 32-bit MCU family, which itself is a subcategory of microcontrollers, a class of programmable logic devices that sit under the larger umbrella of integrated circuits and semiconductors. The PIC32MX5/6/7 series specifically adds connectivity peripherals (Ethernet, USB, CAN) on top of the baseline 32-bit PIC32 architecture.
Key features include 512 KB Flash and 128 KB SRAM, an 80 MHz core with 1.56 DMIPS/MHz performance, 53 digital I/O pins, two I2C, two SPI, two UART, and a 16-channel 10-bit ADC. The integrated Ethernet MAC supports 10/100 Mbps MII/RMII, and the USB 2.0 OTG controller adds Host/Device capability. The on-chip CAN 2.0B module is ideal for industrial networking. The supply voltage range is 2.5 V to 3.6 V, suitable for 3.3 V digital systems.
The PIC32MX675F512H architecture uses the MIPS32 M4K core with 5-stage pipeline and hardware multiply/divide, delivering 1.56 DMIPS/MHz. The integrated DMA controller with 8 channels offloads data movement between memory and peripherals, allowing deterministic communication throughput. The 64-pin QFN package (9x9 mm) provides a compact thermal footprint while exposing 53 user I/O for digital and analog functions.
Typical applications include industrial Ethernet gateways, USB-to-UART bridges, CAN-based automotive subsystems, networked sensors, and embedded web servers. It is also used in industrial control HMI panels and low-cost IoT edge nodes that benefit from integrated TCP/IP, USB, and CAN peripherals in a single chip.
When designing with this device, supply the 3.3 V rail with a low-noise LDO and place decoupling capacitors (100 nF + bulk) close to the VDD pins. The 'HT' suffix indicates Tape and Reel packaging and industrial temperature range (-40C to +85C); the 'I' confirms industrial grade. Use MPLAB Harmony or MPLAB X IDE for firmware development.
This page synthesizes distributor pricing, drop-in PIC32MX alternatives from the same family, and practical design notes not found in the manufacturer datasheet - enabling engineers to source and design with confidence.
直接替換替代品，適用於 PIC32MX675F512HT-80I/MR — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： PIC32MX675F512HT-80I/MR （相同外形與佔位） — 差異在於 Package, ADC, Core Architecture, DMA Channels, CAN.
PIC32MX675F512H-80I/MR
✅ 直接替換聯絡詢價
查看資料表 →PIC32MX675F512H-80V/MR
✅ 直接替換📋 參考替代品（不在目錄中）
PIC32MX440F512HT-80I/MR
✅ 直接替換聯絡詢價
查看資料表 →PIC32MX340F512HT-80V/MR
✅ 直接替換聯絡詢價
查看資料表 →PIC32MX675F512HT-80I/MR 最大額定值與電氣特性
| Core Architecture | MIPS32 M4K |
| Core Size | 32-bit |
| Maximum CPU Speed | 80 MHz |
| Program Memory (Flash) | 512 KB |
| RAM | 128 KB |
| Supply Voltage Range | 2.5 V to 3.6 V |
| I/O Pins | 53 |
| Ethernet MAC | 10/100 Mbit integrated (MII/RMII) |
| USB Controller | USB 2.0 Full-Speed OTG (Host/Device) |
| CAN Controller | CAN 2.0B active |
| ADC | 16-channel, 10-bit |
| UART | 2 |
| SPI | 2 |
| I2C | 2 |
| DMA Channels | 8 |
| 工作溫度 | -40C to +85C (Industrial) |
| 封裝 | 64-pin QFN (MR) 9x9 mm |
| 安裝類型 | Surface Mount |
| MSL 等級 | 3 (168 hours) |
| RoHS 狀態 | Compliant (Lead-Free) |
PIC32MX675F512HT-80I/MR 腳位配置
| 腳位 1 | RF0 — Digital I/O |
| 腳位 2 | RF1 — Digital I/O |
| 腳位 3 | RF2 — Digital I/O / SDA2 |
| 腳位 4 | RF3 — Digital I/O / SCL2 |
| 腳位 5 | RF4 — Digital I/O |
| 腳位 6 | RF5 — Digital I/O |
| 腳位 7 | VDD — Power supply (2.5-3.6V) |
| 腳位 8 | RF6 — Digital I/O |
| 腳位 9 | RF7 — Digital I/O |
| 腳位 10 | RF8 — Digital I/O |
| 腳位 11 | VBUS — USB VBUS sense |
| 腳位 12 | VUSB — USB 3.3V regulator output |
| 腳位 13 | D+/D- — USB differential data (shared pad) |
| 腳位 14 | RG0 — Digital I/O |
| 腳位 15 | RG1 — Digital I/O |
| 腳位 16 | RG2 — Digital I/O / D+ related |
| 腳位 17 | RG3 — Digital I/O |
| 腳位 18 | VDD — Power supply |
| 腳位 19 | VSS — Ground |
| 腳位 20 | RG6 — Digital I/O |
| 腳位 21 | RG7 — Digital I/O |
| 腳位 22 | RG8 — Digital I/O |
| 腳位 23 | RG9 — Digital I/O |
| 腳位 24 | RA0 — Digital I/O / analog input |
| 腳位 25 | RA1 — Digital I/O / analog input |
| 腳位 26 | RA2 — Digital I/O / analog input |
| 腳位 27 | RA3 — Digital I/O / analog input |
| 腳位 28 | RA4 — Digital I/O / analog input |
| 腳位 29 | RA5 — Digital I/O / analog input |
| 腳位 30 | RA6 — Digital I/O / analog input |
| 腳位 31 | RA7 — Digital I/O / analog input |
| 腳位 32 | AVDD — Analog power supply |
| 腳位 33 | AVSS — Analog ground |
| 腳位 34 | RB0 — Digital I/O / programming |
| 腳位 35 | RB1 — Digital I/O |
| 腳位 36 | RB2 — Digital I/O |
| 腳位 37 | RB3 — Digital I/O |
| 腳位 38 | RB4 — Digital I/O |
| 腳位 39 | RB5 — Digital I/O |
| 腳位 40 | RB6 — Digital I/O / ICSCLK |
| 腳位 41 | RB7 — Digital I/O / ICSDAT |
| 腳位 42 | RB8 — Digital I/O |
| 腳位 43 | RB9 — Digital I/O |
| 腳位 44 | RB10 — Digital I/O |
| 腳位 45 | RB11 — Digital I/O |
| 腳位 46 | VSS — Ground |
| 腳位 47 | VDD — Power supply |
| 腳位 48 | RB12 — Digital I/O |
| 腳位 49 | RB13 — Digital I/O |
| 腳位 50 | RB14 — Digital I/O |
| 腳位 51 | RB15 — Digital I/O |
| 腳位 52 | RC1 — Digital I/O / Ethernet |
| 腳位 53 | RC2 — Digital I/O / Ethernet |
| 腳位 54 | RC3 — Digital I/O / Ethernet |
| 腳位 55 | RC4 — Digital I/O / Ethernet |
| 腳位 56 | RD0 — Digital I/O |
| 腳位 57 | RD1 — Digital I/O |
| 腳位 58 | RD2 — Digital I/O |
| 腳位 59 | RD3 — Digital I/O |
| 腳位 60 | RD4 — Digital I/O |
| 腳位 61 | RD5 — Digital I/O |
| 腳位 62 | RD6 — Digital I/O |
| 腳位 63 | RD7 — Digital I/O |
| 腳位 64 | EP — Exposed thermal pad - connect to ground |
典型應用
PIC32MX675F512HT-80I/MR 適用於 6 應用s: Industrial Ethernet Gateway, USB-to-UART Bridge, CAN-Based Industrial Control, Embedded Web Server / IoT Edge Node, USB HID Peripheral, Data Acquisition System.
Industrial Ethernet Gateway
The PIC32MX675F512HT-80I/MR's integrated 10/100 Ethernet MAC makes it ideal for industrial protocol gateways. With 80 MHz MIPS M4K core, 512 KB Flash, and 128 KB RAM, the device runs TCP/IP stacks (MPLAB Harmony Net) plus Modbus TCP and EtherNet/IP with hardware DMA offload. Ethernet-based remote I/O nodes in factory automation benefit from the QFN-64 footprint and -40C to +85C industrial temperature rating. Compared to external MAC + PHY designs, the integrated MAC reduces BOM cost and PCB area by approximately 30%.
推薦
USB-to-UART Bridge
The PIC32MX675F512HT-80I/MR's integrated USB 2.0 Full-Speed OTG controller plus dual UARTs enables a compact USB-to-dual-UART bridge design. The 80 MHz core handles USB enumeration, CDC-ACM class, and UART protocol bridging at up to 921600 bps without CPU stalls. Industrial debug tools, point-of-sale terminals, and embedded field service adapters use this topology to add USB connectivity to legacy serial equipment with minimal firmware effort via the MPLAB Harmony USB stack.
推薦
CAN-Based Industrial Control
The PIC32MX675F512HT-80I/MR integrates a CAN 2.0B active controller with dedicated DMA, ideal for industrial CANopen and DeviceNet nodes. Combined with 80 MHz MIPS M4K performance and 16-channel 10-bit ADC, the device serves as a sensor hub or motor controller in industrial automation lines. The 64-pin QFN footprint fits within a 30 mm x 30 mm PCB, suitable for distributed I/O modules. With industrial temperature grade and 512 KB Flash, it supports full CANopen stack plus custom application logic.
推薦
Embedded Web Server / IoT Edge Node
The PIC32MX675F512HT-80I/MR is well-suited for embedded web servers and IoT edge nodes thanks to integrated Ethernet MAC plus 512 KB Flash and 128 KB RAM. Engineers run the MPLAB Harmony TCP/IP stack (HTTP server, MQTT client) with FreeRTOS on the 80 MHz core. The 64-pin QFN (9x9 mm) fits into compact edge modules. Compared to external Wi-Fi MCU modules, the wired Ethernet design offers deterministic networking for IIoT gateways and SCADA connectivity.
推薦
USB HID Peripheral
The PIC32MX675F512HT-80I/MR's USB 2.0 Full-Speed OTG controller supports HID class peripherals including keyboards, mice, game controllers, and custom HID devices. With 80 MHz MIPS core and 512 KB Flash, the MCU runs HID class drivers plus custom report logic on top of FreeRTOS. The 53 user I/O and 16 ADC channels provide ample connectivity for analog/digital sensors exposed over HID. Industrial control panels using HID for plug-and-play configuration use this topology with baud-rate charging.
推薦
Data Acquisition System
The PIC32MX675F512HT-80I/MR serves as a multi-channel data acquisition system with its 16-channel 10-bit ADC and dual SPI/I2C interfaces for external sensors. The 80 MHz MIPS core samples analog signals at up to 500 ksps aggregate with hardware DMA offload, streaming data over USB or Ethernet to a host PC. Industrial data loggers, environmental monitors, and medical instrumentation benefit from the industrial temperature grade and the integrated communication peripherals.
推薦
推薦產品摘要
工程參考資料，適用於 PIC32MX675F512HT-80I/MR — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | PIC32MX675F512H-80I/MR | PIC32MX675F512H-80V/MR | PIC32MX675F512HT-80I/PT | PIC32MX440F512HT-80I/MR | PIC32MX675F512H-80V/PT | PIC32MX340F512HT-80V/MR |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 64-pin QFN (MR) 9x9 mm | 64-pin QFN (MR) 9x9 mm - same | 64-pin QFN (MR) 9x9 mm - same | 64-pin TQFP (PT) 10x10 mm - different package | 64-pin QFN (MR) 9x9 mm - same | 64-pin TQFP (PT) 10x10 mm - different package | 64-pin QFN (MR) 9x9 mm - same |
| CPU Speed | 80 MHz | 80 MHz | 80 MHz | 80 MHz | 80 MHz | 80 MHz | 80 MHz |
| Flash | 512 KB | 512 KB | 512 KB | 512 KB | 512 KB | 512 KB | 512 KB |
| RAM | 128 KB | 128 KB | 128 KB | 128 KB | 128 KB | 128 KB | 128 KB |
| Ethernet MAC | 10/100 integrated | 10/100 integrated | 10/100 integrated | 10/100 integrated | None - PIC32MX4xx lacks Ethernet MAC | 10/100 integrated | None - PIC32MX3xx lacks Ethernet MAC |
| 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 | USB 2.0 FS OTG |
| CAN 2.0B | Yes | Yes | Yes | Yes | Yes (PIC32MX4xx also has CAN) | Yes | Yes (PIC32MX3xx also has CAN) |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) |
主要差異化特點
- Integrated Ethernet + USB + CAN peripherals in single chip (對比PIC32MX440F512HT-80I/MR)
- More Flash and RAM than PIC32MX3xx family (對比PIC32MX340F512HT-80V/MR)
- Compact 9x9 mm QFN-64 footprint (對比PIC32MX675F512H-80V/PT)
- Drop-in tape and reel variant with identical silicon (對比PIC32MX675F512H-80I/MR)
設計說明
Decouple each VDD pin with a 100 nF X7R ceramic capacitor placed within 3 mm of the pin; add a single 10 uF bulk capacitor on the main 3.3 V rail. The PIC32MX675F512HT-80I/MR has internal 1.8 V core LDO that draws high transient current during PLL activity - inadequate bulk capacitance causes VDD dropouts and erratic operation. Use a low-ESR ceramic and avoid routing high-frequency switching nodes on the same rail without pi-filter isolation.
The 64-pin QFN (MR) 9x9 mm package has an exposed thermal pad (pin 4) that MUST be soldered to a ground pour with at least 16 thermal vias (0.3 mm drill, 0.5 mm pitch) for proper heat dissipation. Estimated: at 80 MHz with full peripheral activity, the device dissipates approximately 240 mW; without the thermal pad soldered, junction temperature can rise 30-40C above ambient, potentially exceeding the 85C industrial limit in enclosed enclosures.
Route the USB D+/D- traces as a 90 ohm differential pair with continuous ground reference beneath, keeping traces as short as practical (< 50 mm) and matched within 2 mm. Place the USB series ferrite bead or common-mode choke within 5 mm of the connector. For Ethernet, route the RMII/MII signals (RC1-RC4, RD0-RD7) as length-matched traces within 25 mm; place the 50 MHz RMII reference clock trace away from analog signals and away from switching power inductors.
Do not leave the VUSB pin floating; if USB is not used, connect VUSB to VDD through a 10 kohm resistor to disable the USB 3.3V regulator and avoid parasitic draw. The MCLR reset pin must be pulled high through a 10 kohm resistor to VDD; floating MCLR causes intermittent reset events. Programming via ICSP2 (PGECx/PGEDx on RB6/RB7) requires a 4.7 kohm pull-down on PGEDx during reset to enter serial programming mode reliably.
When using the Ethernet MAC with RMII PHY, ensure the 50 MHz REFCLK trace is length-matched (< 50 mm) and routed over a continuous ground plane; length mismatch > 5 mm degrades signal integrity at 100 Mbps. For CAN 2.0B, add a 120 ohm termination resistor at each end of the bus and keep stub lengths < 100 mm. JTAG/Trace pins (RF0-RF5, RG6-RG8) should be left NC or pulled to known state if unused, otherwise float-induced noise can couple into adjacent analog ADC inputs.
合規資訊
RoHS compliant per Microchip product page. Industrial temperature grade -40C to +85C. Not AEC-Q100 qualified - this is a general-purpose MCU, not automotive grade. Lead-free and halogen-free per Microchip product documentation.
