PIC32MX675F256L-80I/PF - 80MHz 32-bit MCU 256KB Flash | Microchip
MPN: PIC32MX675F256L-80I/PF ✓ Hoạt độngPIC32MX675F256L-80I/PF Tóm tắt
A 32-bit microcontroller (MCU) is an integrated circuit that combines a 32-bit CPU core, program and data memory, and a rich set of programmable peripherals on a single silicon die. PIC32MX MCUs sit in the broader taxonomy of microcontrollers -> 32-bit microcontrollers -> MIPS-based microcontrollers -> embedded controllers -> semiconductor ICs, designed for applications that need more computational headroom than 8-bit or 16-bit parts but lower power and simpler toolchains than Cortex-M devices.
Key features include an integrated 10/100 Mbit Ethernet MAC, USB 2.0 full-speed On-The-Go controller with dedicated DMA, eight DMA channels for low-CPU-overhead data movement, a 16-channel 10-bit ADC, two I2C, two SPI, and five UART/I2C modules, plus five 16-bit timers/capture/compare/PWM modules. The M4K core supports the MIPS DSP ASE, providing single-cycle MAC and saturating arithmetic for signal-processing workloads.
The PIC32MX6xx family is fabricated on a CMOS process that delivers the deterministic interrupt latency and 5-stage pipeline performance typical of the MIPS architecture, while the integrated Ethernet MAC and USB OTG reduce the need for external interface chips. Up to 83 general-purpose I/O lines and peripheral pin select (PPS) give layout flexibility, and MPLAB Harmony provides a unified firmware framework for these peripherals.
Typical applications include industrial Ethernet nodes (Modbus TCP, EtherNet/IP gateways), USB device and embedded-host products, networked sensors, HMI panels with TFT displays, audio processing with the DSP ASE, and bridging between Ethernet and USB in factory automation. The combination of Ethernet + USB + ample RAM also suits connected data loggers and protocol converters.
When designing with this device, plan the pin-out using the Peripheral Pin Select feature early; mismatched PPS mappings are the most common bring-up issue. For Ethernet, add the required 50 MHz reference oscillator circuit, bias resistor network, and pulse transformer specified in the PIC32MX5/6/7 family reference manual.
This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the manufacturer datasheet alone.
Bộ thay thế dễ dàng lắp đặt cho PIC32MX675F256L-80I/PF — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với PIC32MX675F256L-80I/PF (cùng hình factor và footprint) — khác nhau ở Package, ADC, USB, DMA Channels, I/O Pins.
PIC32MX675F256L-80V/PF
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC32MX675F256LT-80I/PF
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC32MX575F256L-80I/PF
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC32MX575F256L-80V/PF
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC32MX575F512L-80I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC32MX675F256L-80I/PF Tỷ lệ tối đa & tính chất điện
| Core Architecture | MIPS32 M4K |
| CPU Bit Width | 32-bit |
| Maximum CPU Clock | 80 MHz |
| Program Memory (Flash) | 256 KB (256K x 8) |
| Data Memory (SRAM) | 64 KB |
| Khoảng nhiệt độ hoạt động | -40C to +85C (Industrial) |
| Supply Voltage (VDD) | 2.3 V to 3.6 V |
| Hộp | 100-TQFP (14x14 mm) |
| Kiểu lắp đặt | Surface Mount |
| Ethernet MAC | 10/100 Mbit integrated |
| USB | USB 2.0 Full-Speed OTG |
| DMA Channels | 8 |
| ADC | 10-bit, 16-channel |
| I/O Pins | 83 (general-purpose) |
| Timers/CCP/PWM | 5 x 16-bit |
| UART/I2C/SPI | 5 UART, 2 I2C, 2 SPI |
| Trạng thái RoHS | Compliant |
| Lead-Free / MSL | Lead-Free, MSL 3 |
Cấu hình chân PIC32MX675F256L-80I/PF
| Chân 1 | RG15 — General-purpose I/O / PMP data line |
| Chân 2 | RG12 — General-purpose I/O |
| Chân 3 | MCLR — Master Clear (reset) input, active low |
| Chân 4 | RG0 — General-purpose I/O |
| Chân 5 | VDD — Core supply voltage (3.3 V) |
| Chân 6 | RF1 — General-purpose I/O |
| Chân 7 | RF0 — General-purpose I/O |
| Chân 8 | VDD — Core supply voltage (3.3 V) |
| Chân 9 | RF2 — General-purpose I/O |
| Chân 10 | RF3 — General-purpose I/O |
| Chân 11 | RF4 — General-purpose I/O |
| Chân 12 | RF5 — General-purpose I/O |
| Chân 13 | RF6 — General-purpose I/O |
| Chân 14 | RF7 — General-purpose I/O |
| Chân 15 | RF8 — General-purpose I/O |
| Chân 16 | VSS — Ground reference |
| Chân 17 | RG1 — General-purpose I/O |
| Chân 18 | RG2 — General-purpose I/O |
| Chân 19 | RG3 — General-purpose I/O |
| Chân 20 | RG4 — General-purpose I/O |
| Chân 21 | RG5 — General-purpose I/O |
| Chân 22 | RG6 — General-purpose I/O |
| Chân 23 | RG7 — General-purpose I/O |
| Chân 24 | RG8 — General-purpose I/O |
| Chân 25 | RG9 — General-purpose I/O |
| Chân 26 | RG10 — General-purpose I/O |
| Chân 27 | RG11 — General-purpose I/O |
| Chân 28 | RG13 — General-purpose I/O |
| Chân 29 | RG14 — General-purpose I/O |
| Chân 30 | VDD — Core supply voltage (3.3 V) |
| Chân 31 | VSS — Ground reference |
| Chân 32 | RA0 — General-purpose I/O / analog input |
| Chân 33 | RA1 — General-purpose I/O / analog input |
| Chân 34 | RA2 — General-purpose I/O / analog input |
| Chân 35 | RA3 — General-purpose I/O / analog input |
| Chân 36 | RA4 — General-purpose I/O / analog input |
| Chân 37 | RA5 — General-purpose I/O / analog input |
| Chân 38 | RA6 — General-purpose I/O / analog input |
| Chân 39 | RA7 — General-purpose I/O / analog input |
| Chân 40 | RB0 — General-purpose I/O / programming |
| Chân 41 | RB1 — General-purpose I/O / programming |
| Chân 42 | RB2 — General-purpose I/O |
| Chân 43 | RB3 — General-purpose I/O |
| Chân 44 | RB4 — General-purpose I/O |
| Chân 45 | RB5 — General-purpose I/O |
| Chân 46 | RB6 — General-purpose I/O / programming clock |
| Chân 47 | RB7 — General-purpose I/O / programming data |
| Chân 48 | RB8 — General-purpose I/O |
| Chân 49 | RB9 — General-purpose I/O |
| Chân 50 | RB10 — General-purpose I/O |
| Chân 51 | RB11 — General-purpose I/O |
| Chân 52 | RB12 — General-purpose I/O |
| Chân 53 | RB13 — General-purpose I/O |
| Chân 54 | RB14 — General-purpose I/O |
| Chân 55 | RB15 — General-purpose I/O |
| Chân 56 | VSS — Ground reference |
| Chân 57 | VDD — Core supply voltage (3.3 V) |
| Chân 58 | RC1 — General-purpose I/O |
| Chân 59 | RC2 — General-purpose I/O |
| Chân 60 | RC3 — General-purpose I/O |
| Chân 61 | RC4 — General-purpose I/O |
| Chân 62 | VDD — Core supply voltage (3.3 V) |
| Chân 63 | VBUS — USB bus voltage detect |
| Chân 64 | VDD — Core supply voltage (3.3 V) |
| Chân 65 | RC5 — General-purpose I/O |
| Chân 66 | RC6 — General-purpose I/O |
| Chân 67 | RC7 — General-purpose I/O |
| Chân 68 | RC8 — General-purpose I/O |
| Chân 69 | RC9 — General-purpose I/O |
| Chân 70 | VDD — Core supply voltage (3.3 V) |
| Chân 71 | VSS — Ground reference |
| Chân 72 | RC10 — General-purpose I/O |
| Chân 73 | RC11 — General-purpose I/O |
| Chân 74 | RC12 — General-purpose I/O |
| Chân 75 | RC13 — General-purpose I/O |
| Chân 76 | RC14 — General-purpose I/O |
| Chân 77 | RC15 — General-purpose I/O |
| Chân 78 | RD0 — General-purpose I/O / PMP data line |
| Chân 79 | RD1 — General-purpose I/O / PMP data line |
| Chân 80 | RD2 — General-purpose I/O / PMP data line |
| Chân 81 | RD3 — General-purpose I/O / PMP data line |
| Chân 82 | RD4 — General-purpose I/O / PMP data line |
| Chân 83 | RD5 — General-purpose I/O / PMP data line |
| Chân 84 | RD6 — General-purpose I/O / PMP data line |
| Chân 85 | RD7 — General-purpose I/O / PMP data line |
| Chân 86 | RD8 — General-purpose I/O / PMP data line |
| Chân 87 | RD9 — General-purpose I/O / PMP data line |
| Chân 88 | RD10 — General-purpose I/O / PMP data line |
| Chân 89 | RD11 — General-purpose I/O / PMP data line |
| Chân 90 | RD12 — General-purpose I/O / PMP data line |
| Chân 91 | RD13 — General-purpose I/O / PMP data line |
| Chân 92 | RD14 — General-purpose I/O / PMP data line |
| Chân 93 | RD15 — General-purpose I/O / PMP data line |
| Chân 94 | VSS — Ground reference |
| Chân 95 | VDD — Core supply voltage (3.3 V) |
| Chân 96 | RE0 — General-purpose I/O |
| Chân 97 | RE1 — General-purpose I/O |
| Chân 98 | RE2 — General-purpose I/O |
| Chân 99 | RE3 — General-purpose I/O |
| Chân 100 | RE4 — General-purpose I/O |
Ứng dụng tiêu biểu
PIC32MX675F256L-80I/PF phù hợp cho 6 Áp dụngs: Industrial Ethernet Node, USB Device / Embedded Host Product, Networked Sensor Data Logger, HMI Panel with TFT Display, Audio Processing with DSP Extensions, Protocol Bridge (Ethernet to USB / RS-485).
Industrial Ethernet Node
The PIC32MX675F256L-80I/PF's integrated 10/100 Mbit Ethernet MAC and 64 KB SRAM make it a strong fit for industrial Ethernet nodes running Modbus TCP, EtherNet/IP, or PROFINET gateways. The 80 MHz MIPS32 M4K core executes the TCP/IP stack with adequate headroom for application logic, while the 256 KB Flash holds both the Harmony TCP/IP stack and application firmware without external memory. Place the MCU adjacent to the Ethernet PHY and follow the bias-resistor and pulse-transformer layout from the PIC32MX5/6/7 family reference manual; an external 50 MHz reference oscillator is required for the Ethernet MAC.
Được đề xuất
USB Device / Embedded Host Product
The integrated USB 2.0 full-speed On-The-Go controller supports both device and embedded-host roles, enabling products such as USB-to-UART bridges, USB data loggers, or USB human-interface devices without an external interface IC. The 8 DMA channels offload USB endpoint servicing from the CPU, and 64 KB SRAM buffers USB transactions efficiently. Use the Harmony USB stack to reduce firmware development time; pair with USBLC6-2SC6 ESD protection on D+/D- lines and follow USB-IF impedance guidelines (90 ohm differential) on the PCB.
Được đề xuất
Networked Sensor Data Logger
The combination of Ethernet, USB, 10-bit 16-channel ADC, and ample 64 KB SRAM makes the PIC32MX675F256L-80I/PF ideal for a remote sensor data logger that posts readings to a server over Modbus TCP or HTTP. The 16 ADC channels cover multi-sensor panels (temperature, pressure, flow), and the 8 DMA channels enable background ADC-to-RAM transfers without CPU intervention. Use 3.3 V sensor supplies and add input protection (TVS + RC filter) on each ADC input; plan flash wear by storing sampled data in external EEPROM rather than writing Flash on every sample.
Được đề xuất
HMI Panel with TFT Display
For HMI panels driving a small TFT (3.5" to 5") with touch, the PIC32MX675F256L-80I/PF provides enough RAM for a framebuffer and the GPIO count (83 pins) needed for an 8/16-bit parallel display interface plus touch-sensing I/O. The 256 KB Flash holds a lightweight graphics library and the application UI; the 5 x 16-bit timers generate backlight PWM and buzzer tones. Use the PMP (Parallel Master Port) peripheral for fast display updates and AR1021 for resistive touch; debounce all keypad inputs and isolate the display backlight driver with a logic-level MOSFET.
Được đề xuất
Audio Processing with DSP Extensions
The MIPS32 M4K core includes the MIPS DSP ASE, providing single-cycle MAC and saturating arithmetic - useful for audio effects, sample-rate conversion, or simple codec preprocessing. With 64 KB SRAM, the MCU handles stereo 16-bit audio at 48 kSPS in real time, while Ethernet or USB transports the audio stream. Use DMA to feed I2S peripherals from RAM buffers; design the PCB with separate analog and digital ground planes and place the audio CODEC on the analog domain to keep DAC SNR above 90 dB.
Được đề xuất
Protocol Bridge (Ethernet to USB / RS-485)
Bridge legacy RS-485 or UART-based fieldbus networks onto Ethernet or USB with a single PIC32MX675F256L-80I/PF. The 5 UARTs cover multi-port RS-485 nodes (with external transceiver ICs), while Ethernet or USB host the upstream connection. The 256 KB Flash holds both the upstream TCP/IP or USB stack and downstream protocol handlers; DMA offloads continuous serial stream processing. Use isolated RS-485 transceivers (ADM2587E) on fieldbus ports and add common-mode chokes on Ethernet to meet industrial EMC requirements.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC32MX675F256L-80I/PF — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | PIC32MX675F256L-80V/PF | PIC32MX675F256LT-80I/PF | PIC32MX575F256L-80I/PF | PIC32MX575F256L-80V/PF |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 100-TQFP (14x14 mm) /PF | 100-TQFP (14x14 mm) /PF - same | 100-TQFP (14x14 mm) /PF - same | 100-TQFP (14x14 mm) /PF - same | 100-TQFP (14x14 mm) /PF - same |
| Core | MIPS32 M4K, 80 MHz | MIPS32 M4K, 80 MHz | MIPS32 M4K, 80 MHz | MIPS32 M4K, 80 MHz | MIPS32 M4K, 80 MHz |
| Flash | 256 KB | 256 KB | 256 KB | 256 KB | 256 KB |
| SRAM | 64 KB | 64 KB | 64 KB | 64 KB | 64 KB |
| Ethernet MAC | 10/100 integrated | 10/100 integrated | 10/100 integrated | Not present | Not present |
| 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 |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +105C (Extended) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +105C (Extended) |
Bảo phân biệt quan trọng
- Same 100-pin TQFP (14x14) footprint with extended temperature grade (vsPIC32MX675F256L-80V/PF)
- Integrated Ethernet MAC and USB OTG in a single MCU (vsPIC32MX575F256L-80I/PF)
- Largest Flash density in the PIC32MX5/6/7 family per footprint (vsPIC32MX675F256L-80I/PT)
Ghi chú thiết kế
Route the 50 MHz Ethernet reference oscillator traces as short as possible and shield the crystal traces from digital signal crossings. Place the Ethernet pulse transformer within 25 mm of the RJ45 jack, and keep the 49.9 ohm 1% bias resistors and 0.01 uF bias capacitor within 5 mm of the ETHRJ45/ERBIAS pins per the PIC32MX5/6/7 family reference manual section on Ethernet physical interface.
Decouple every VDD pin with a 0.1 uF ceramic capacitor placed within 3 mm of the pin, and add a single 10 uF bulk capacitor shared across all VDD rails. The MCU can source/sink significant transient currents when Ethernet and USB operate simultaneously; inadequate bulk decoupling causes brown-out resets. Use a low-noise 3.3 V LDO such as MCP1700 with at least 200 mA headroom above the worst-case MCU consumption.
The Peripheral Pin Select (PPS) feature lets digital peripherals be remapped to most I/O pins. Plan the PPS mapping early and lock it in firmware configuration bits - changing the mapping mid-development wastes time because most peripherals (UART, SPI, PWM, input capture) require explicit PPS unlock sequences. Reserve dedicated I/O for JTAG (TCK/TMS/TDI/TDO) and trace (TRCLK/TRD0/TRD1 if used) so debug does not conflict with peripherals.
Do not skip the external Ethernet bias-resistor network (two 49.9 ohm 1% resistors and one 0.01 uF capacitor in a specific topology) - without it the Ethernet PHY will not link. Also do not omit the VBUS voltage divider for USB OTG host mode, which requires sampling VBUS through a resistor network on a dedicated pin. Both networks are mandatory even if only the device or only the host role is used.
Estimated: At maximum CPU activity (80 MHz with all peripherals active), the PIC32MX675F256L draws approximately 75 mA at 3.3 V, dissipating ~250 mW. In the 100-pin TQFP (14x14 mm) package with typical PCB layout, junction-to-ambient thermal resistance is approximately 35 C/W, giving a temperature rise of about 9 C above ambient - well within the industrial 85 C limit. Industrial applications need only standard PCB copper pour; no external heatsink required.
Thông tin tuân thủ
RoHS compliant and lead-free per Microchip product page and 'PF' suffix package designation. Not AEC-Q100 qualified - for automotive applications, consider the PIC32MX family V variants or dedicated automotive-qualified parts.
