PIC32MX675F256HT-80V/PT - 80MHz 32-bit MCU 256KB Flash | Microchip
MPN： PIC32MX675F256HT-80V/PT ✓ 啟用中PIC32MX675F256HT-80V/PT 概覽
A 32-bit microcontroller (MCU) is a programmable processor built around a 32-bit data path, typically with on-chip Flash program memory, SRAM, peripherals, and interrupt controller. The PIC32MX series sits in the hierarchy: 32-bit MCU -> embedded processor -> MIPS M4K core -> Microchip PIC32 portfolio. Compared with 8-bit/16-bit MCUs, 32-bit parts provide higher throughput, larger address spaces, and richer peripherals for connected embedded designs.
Key features include 256 KB Flash, 64 KB RAM, USB-OTG (host/device/OTG), 10/100 Ethernet MAC with MII/RMII interface, two I2C, two SPI, two UART, five 16-bit timers, five input-capture and five output-compare modules, a 10-bit 1 Msps ADC with up to 16 channels, and a parallel master port (PMP). The 64-pin TQFP footprint exposes 53 general-purpose I/O pins, leaving several pins dedicated to oscillator, JTAG, and analog functions.
The M4K core executes most instructions in one cycle, providing 1.56 DMIPS/MHz and integer DSP extensions. The Ethernet MAC integrates an MII/RMII interface and the USB-OTG controller adds full-speed and low-speed USB with on-chip transceiver, removing the need for an external PHY for USB. DMA channels offload data movement between peripherals and memory, freeing the CPU for application code.
Typical applications include industrial Ethernet nodes, USB-OTG peripherals (HID, CDC, mass storage, audio), Ethernet-enabled PLCs, HVAC and building automation controllers, and graphical user interfaces using PMP to drive LCDs. Its combination of Ethernet, USB, and 80 MHz MIPS core suits connected industrial and consumer designs.
When designing with the PIC32MX675F256HT-80V/PT, ensure the 2.3-3.6V supply is decoupled with 100 nF + bulk ceramic placed near the VDD/VSS pairs. Configure the JTAG/ICSP pins (TMS, TCK, TDI, TDO) carefully so production programming is not blocked. Use the Ethernet MAC with an external PHY qualified for the target EMI environment.
This page synthesizes distributor pricing, drop-in alternatives, and side-by-side parametric guidance not found on the manufacturer product page alone, allowing engineers to evaluate the PIC32MX675F256HT-80V/PT against alternatives in one view.
直接替換替代品，適用於 PIC32MX675F256HT-80V/PT — 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： PIC32MX675F256HT-80V/PT （相同外形與佔位） — 差異在於 Package, ADC, DMA Channels, Timers, Performance.
PIC32MX675F256H-80V/PT
✅ 直接替換聯絡詢價
查看資料表 →PIC32MX675F256HT-80I/PT
✅ 直接替換📋 參考替代品（不在目錄中）
PIC32MX575F512H-80V/PT
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →PIC32MX460F512L-80V/PT
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →PIC32MX675F256L-80V/PT
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
PIC32MX675F256HT-80V/PT 最大額定值與電氣特性
| Core | MIPS32 M4K |
| Architecture | 32-bit RISC |
| Maximum CPU Speed | 80 MHz |
| Performance | 1.56 DMIPS/MHz |
| Program Flash | 256 KB |
| SRAM | 64 KB |
| 供應電壓 | 2.3 V to 3.6 V |
| 工作溫度 | -40C to +105C |
| 封裝 | TQFP-64 (PT) 10x10 mm |
| I/O Pins | 53 |
| ADC | 10-bit, 1 Msps, up to 16 channels |
| USB | USB-OTG (host/device/OTG, on-chip transceiver) |
| Ethernet | 10/100 MAC with MII/RMII |
| Serial Interfaces | 2x I2C, 2x SPI, 2x UART |
| Timers | Five 16-bit timers; 5x input-capture / 5x output-compare |
| DMA Channels | Yes |
| Parallel Master Port (PMP) | Yes |
| Speed Grade | V (80 MHz @ 3.3V) |
| RoHS 狀態 | Compliant |
| 安裝類型 | Surface Mount |
PIC32MX675F256HT-80V/PT 腳位配置
| 腳位 1 | RG15 — General purpose I/O |
| 腳位 2 | RG6 — General purpose I/O |
| 腳位 3 | RG7 — General purpose I/O |
| 腳位 4 | RG8 — General purpose I/O |
| 腳位 5 | RG9 — General purpose I/O |
| 腳位 6 | MCLR — Master Clear (reset, active low) |
| 腳位 7 | RG3 — General purpose I/O |
| 腳位 8 | RG2 — General purpose I/O |
| 腳位 9 | VSS — Ground |
| 腳位 10 | VDD — Supply voltage (2.3V-3.6V) |
| 腳位 11 | RF13 — General purpose I/O |
| 腳位 12 | RF12 — General purpose I/O |
| 腳位 13 | PG3 — General purpose I/O |
| 腳位 14 | PG2 — General purpose I/O |
| 腳位 15 | PG1 — General purpose I/O |
| 腳位 16 | PG0 — General purpose I/O |
| 腳位 17 | VSS — Ground |
| 腳位 18 | VDD — Supply voltage (2.3V-3.6V) |
| 腳位 19 | PA0 — General purpose I/O |
| 腳位 20 | PA1 — General purpose I/O |
| 腳位 21 | PA2 — General purpose I/O |
| 腳位 22 | PA3 — General purpose I/O |
| 腳位 23 | PA4 — General purpose I/O |
| 腳位 24 | PA5 — General purpose I/O |
| 腳位 25 | PA6 — General purpose I/O |
| 腳位 26 | PA7 — General purpose I/O |
| 腳位 27 | PA8 — General purpose I/O |
| 腳位 28 | PA9 — General purpose I/O |
| 腳位 29 | PA10 — General purpose I/O |
| 腳位 30 | PA11 — General purpose I/O |
| 腳位 31 | PA12 — General purpose I/O |
| 腳位 32 | PA13 — General purpose I/O |
| 腳位 33 | PA14 — General purpose I/O |
| 腳位 34 | PA15 — General purpose I/O |
| 腳位 35 | VSS — Ground |
| 腳位 36 | VDD — Supply voltage (2.3V-3.6V) |
| 腳位 37 | PB0 — General purpose I/O / AN0 |
| 腳位 38 | PB1 — General purpose I/O / AN1 |
| 腳位 39 | PB2 — General purpose I/O / AN2 |
| 腳位 40 | PB3 — General purpose I/O / AN3 |
| 腳位 41 | PB4 — General purpose I/O / AN4 |
| 腳位 42 | PB5 — General purpose I/O / AN5 |
| 腳位 43 | PB6 — General purpose I/O / AN6 |
| 腳位 44 | PB7 — General purpose I/O / AN7 |
| 腳位 45 | PB8 — General purpose I/O / AN8 |
| 腳位 46 | PB9 — General purpose I/O / AN9 |
| 腳位 47 | PB10 — General purpose I/O / AN10 |
| 腳位 48 | PB11 — General purpose I/O / AN11 |
| 腳位 49 | VSS — Ground |
| 腳位 50 | VDD — Supply voltage (2.3V-3.6V) |
| 腳位 51 | PC1 — General purpose I/O / AN12 |
| 腳位 52 | PC2 — General purpose I/O / AN13 |
| 腳位 53 | PC3 — General purpose I/O / AN14 |
| 腳位 54 | PC4 — General purpose I/O / AN15 |
| 腳位 55 | VSS — Ground |
| 腳位 56 | VDD — Supply voltage (2.3V-3.6V) |
| 腳位 57 | RF0 — General purpose I/O |
| 腳位 58 | RF1 — General purpose I/O |
| 腳位 59 | RF2 — General purpose I/O |
| 腳位 60 | RF3 — General purpose I/O |
| 腳位 61 | RF4 — General purpose I/O |
| 腳位 62 | RF5 — General purpose I/O |
| 腳位 63 | RF6 — General purpose I/O |
| 腳位 64 | RF7 — General purpose I/O |
典型應用
PIC32MX675F256HT-80V/PT 適用於 7 應用s: Industrial Ethernet Node / PLC, USB-OTG Peripheral (HID / CDC / Audio), HVAC and Building Automation Controller, Graphical User Interface with PMP LCD, Connected Sensor Hub (IoT Gateway), Audio Streaming over USB or Ethernet, Test & Measurement Front-End with USB.
Industrial Ethernet Node / PLC
The PIC32MX675F256HT-80V/PT fits industrial Ethernet nodes because it integrates a 10/100 MAC with MII/RMII, 80 MHz MIPS32 M4K core, and 64 KB SRAM - enough headroom for lwIP or Microchip TCP/IP stacks alongside application code. Engineers pair it with an external PHY such as the LAN8720A or DP83848 and a 50 MHz oscillator to drive industrial protocols like Modbus TCP, EtherNet/IP, or PROFINET. The 105C temperature rating supports cabinet-mounted PLCs without active cooling.
推薦
USB-OTG Peripheral (HID / CDC / Audio)
The PIC32MX675F256HT-80V/PT suits USB-OTG peripherals because it integrates a USB-OTG controller with on-chip transceiver, eliminating an external ULPI chip and reducing BOM. With 80 MHz of CPU and 64 KB SRAM, it can run USB stacks plus class drivers for HID, CDC-ACM, or USB audio class 1.1 - useful for industrial input devices, configuration tools, or USB audio interfaces. Add a USB micro-B connector with ESD protection such as USBLC6-2SC6.
推薦
HVAC and Building Automation Controller
The PIC32MX675F256HT-80V/PT is well-suited for HVAC controllers because it provides 53 GPIO pins for triac/relay drives, keypads, and sensor inputs, plus 16 ADC channels for temperature and pressure monitoring. The 105C rating handles rooftop or boiler-room enclosures. Use a PMP interface to drive character or graphic LCDs for wall thermostats, and rely on the UART/I2C ports for external sensor and transceiver modules.
推薦
Graphical User Interface with PMP LCD
The PIC32MX675F256HT-80V/PT can drive graphical LCDs because the Parallel Master Port (PMP) interfaces to TFT panels and OLED modules up to 16-bit wide with DMA offload. Combined with 80 MHz of CPU, the part handles anti-aliased text and small widget refreshes without external graphics accelerators. Pair with a 3.5" QVGA TFT and an SPI touchscreen controller for a complete HMI module.
推薦
Connected Sensor Hub (IoT Gateway)
The PIC32MX675F256HT-80V/PT fits IoT gateways because it offers Ethernet or Wi-Fi IP, multiple UARTs for sensors, and a 10-bit ADC for analog channels - all from a single chip. With 64 KB SRAM it can buffer JSON payloads and TLS lite handshakes before forwarding over MQTT to the cloud. Add a sub-GHz radio via SPI for battery-backed remote sensor nodes.
推薦
Audio Streaming over USB or Ethernet
The PIC32MX675F256HT-80V/PT can act as a USB audio class 1.1 device or Ethernet-AV bridge because the DMA channels offload sample movement while the 80 MHz core runs the audio stack. With 64 KB SRAM it can buffer several ms of 48 kHz/16-bit stereo, and the 10-bit ADC can sample auxiliary analog inputs. Useful for intercoms, networked speakers, or USB audio adapters.
推薦
Test & Measurement Front-End with USB
The PIC32MX675F256HT-80V/PT fits USB-CDC-based test instruments because the 10-bit 1 Msps ADC samples waveforms while the USB-OTG port streams data to a PC. Engineers use the DMA to sustain sample rates above 500 ksps without CPU intervention. Combined with the 80 MHz core, the part supports on-the-fly FFT and decimation for compact bench tools.
推薦
推薦產品摘要
工程參考資料，適用於 PIC32MX675F256HT-80V/PT — 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 | PIC32MX675F256H-80V/PT | PIC32MX675F256HT-80I/PT | PIC32MX675F256L-80V/PT | PIC32MX575F512H-80V/PT | PIC32MX460F512L-80V/PT |
|---|---|---|---|---|---|---|
| Package | TQFP-64 (PT) 10x10 mm | TQFP-64 (PT) - same | TQFP-64 (PT) - same | TQFP-64 (PT) - same | TQFP-64 (PT) - same | TQFP-64 (PT) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Operating Temperature | -40C to +105C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
| Flash / SRAM | 256 KB / 64 KB | 256 KB / 64 KB | 256 KB / 64 KB | 256 KB / 64 KB | 512 KB / 64 KB | 512 KB / 32 KB |
| Maximum CPU Speed | 80 MHz | 80 MHz | 80 MHz | 80 MHz | 80 MHz | 80 MHz |
| Ethernet MAC | Yes (10/100 MII/RMII) | Yes | Yes | Yes | No | No |
| USB-OTG | Yes | Yes | Yes | Yes | Yes | Yes |
| ADC | 10-bit, 16 ch, 1 Msps | 10-bit, 16 ch, 1 Msps | 10-bit, 16 ch, 1 Msps | 10-bit, 16 ch, 1 Msps | 10-bit, 16 ch, 1 Msps | 10-bit, 16 ch, 1 Msps |
| Site MPN | Yes | Yes | No | No | Yes | Yes |
主要差異化特點
- Higher temperature ceiling (105C) for harsh industrial environments (對比PIC32MX675F256H-80V/PT)
- Integrated Ethernet MAC and USB-OTG in a single chip (對比PIC32MX460F512L-80V/PT)
- More RAM (64 KB) than 460F family (32 KB) (對比PIC32MX460F512L-80V/PT)
設計說明
Place a 100 nF ceramic bypass capacitor directly next to each VDD pin and a bulk 10 uF tantalum or ceramic on the main 3.3V rail. The PIC32MX675F256HT-80V/PT has six VDD pins distributed across the 64-pin TQFP; pairing each one with local decoupling prevents supply droop during DMA and Ethernet bursts that could otherwise trip voltage monitors.
Route the Ethernet MII/RMII traces with 50-ohm controlled impedance and length-match the data/clock pairs within 50 mils. Place the external PHY integrated within 25 mm of the MAC pins to keep signal integrity intact, and provide a clean analog ground island for the PHY. JTAG TMS/TCK/TDI/TDO lines should be pulled up or routed with care so they do not block production programming.
Do not exceed the 3.6V absolute maximum on any I/O pin or the USB D+/D- pins, or the part will be damaged. Ensure the MCLR pin has a proper 10 kohm pull-up and a 100 nF cap to ground for noise immunity. The USB-OTG VBUS pin requires a 5V-tolerance circuit; do not feed 5V directly into a non-5V-tolerant GPIO. Verify oscillator loading capacitors against the chosen crystal ESR to avoid start-up failure at low temperatures.
Estimated: at 80 MHz CPU, 3.3V supply, typical industrial workloads (no Ethernet), ICC is approximately 70 mA so power dissipation is around 0.23 W. The TQFP-64 package has a theta_JA of approximately 35 C/W on a 4-layer JEDEC PCB, resulting in roughly 8C rise above ambient. At 105C ambient, this leaves 67C headroom - safe for the extended industrial grade.
合規資訊
Microchip PIC32MX family products are RoHS compliant and lead-free. AEC-Q100 qualification is not applicable for general-purpose MCU - this is an industrial extended-temperature part, not automotive qualified.
