PIC32MX675F256L-80I/PF - 80MHz 32-bit MCU 256KB Flash | Microchip
料号： PIC32MX675F256L-80I/PF ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $9.82 | $9.82 |
| 10 | $9.05 | $90.50 |
| 100 | $7.95 | $795.00 |
| 500 | $7.18 | $3,590.00 |
| 1,000 | $6.55 | $6,550.00 |
PIC32MX675F256L-80I/PF 概述
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.
直接替换替代料： PIC32MX675F256L-80I/PF ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： PIC32MX675F256L-80I/PF （相同外形与封装尺寸） ——差异在于 Package, ADC, USB, DMA Channels, I/O Pins.
快速对比工具——选择替代料号进行并排对比：
PIC32MX675F256L-80V/PF
✅ 直接替换✓ 有现货
$5.1 / 个
查看数据手册 →PIC32MX675F256LT-80I/PF
✅ 直接替换✓ 有现货
$6.45 / 个
查看数据手册 →PIC32MX575F256L-80I/PF
✅ 直接替换📋 参考替代料（不在目录中）
PIC32MX575F256L-80V/PF
✅ 直接替换✓ 有现货
$6.55 / 个
查看数据手册 →PIC32MX575F512L-80I/PT
✅ 直接替换✓ 有现货
$6.12 / 个
查看数据手册 →PIC32MX675F256L-80I/PF 最大额定值与电气特性
| 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 |
| 工作温度范围 | -40C to +85C (Industrial) |
| Supply Voltage (VDD) | 2.3 V to 3.6 V |
| 封装 | 100-TQFP (14x14 mm) |
| 安装类型 | 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 |
| RoHS 状态 | Compliant |
| Lead-Free / MSL | Lead-Free, MSL 3 |
PIC32MX675F256L-80I/PF 引脚配置
| 引脚 1 | RG15 — General-purpose I/O / PMP data line |
| 引脚 2 | RG12 — General-purpose I/O |
| 引脚 3 | MCLR — Master Clear (reset) input, active low |
| 引脚 4 | RG0 — General-purpose I/O |
| 引脚 5 | VDD — Core supply voltage (3.3 V) |
| 引脚 6 | RF1 — General-purpose I/O |
| 引脚 7 | RF0 — General-purpose I/O |
| 引脚 8 | VDD — Core supply voltage (3.3 V) |
| 引脚 9 | RF2 — General-purpose I/O |
| 引脚 10 | RF3 — General-purpose I/O |
| 引脚 11 | RF4 — General-purpose I/O |
| 引脚 12 | RF5 — General-purpose I/O |
| 引脚 13 | RF6 — General-purpose I/O |
| 引脚 14 | RF7 — General-purpose I/O |
| 引脚 15 | RF8 — General-purpose I/O |
| 引脚 16 | VSS — Ground reference |
| 引脚 17 | RG1 — General-purpose I/O |
| 引脚 18 | RG2 — General-purpose I/O |
| 引脚 19 | RG3 — General-purpose I/O |
| 引脚 20 | RG4 — General-purpose I/O |
| 引脚 21 | RG5 — General-purpose I/O |
| 引脚 22 | RG6 — General-purpose I/O |
| 引脚 23 | RG7 — General-purpose I/O |
| 引脚 24 | RG8 — General-purpose I/O |
| 引脚 25 | RG9 — General-purpose I/O |
| 引脚 26 | RG10 — General-purpose I/O |
| 引脚 27 | RG11 — General-purpose I/O |
| 引脚 28 | RG13 — General-purpose I/O |
| 引脚 29 | RG14 — General-purpose I/O |
| 引脚 30 | VDD — Core supply voltage (3.3 V) |
| 引脚 31 | VSS — Ground reference |
| 引脚 32 | RA0 — General-purpose I/O / analog input |
| 引脚 33 | RA1 — General-purpose I/O / analog input |
| 引脚 34 | RA2 — General-purpose I/O / analog input |
| 引脚 35 | RA3 — General-purpose I/O / analog input |
| 引脚 36 | RA4 — General-purpose I/O / analog input |
| 引脚 37 | RA5 — General-purpose I/O / analog input |
| 引脚 38 | RA6 — General-purpose I/O / analog input |
| 引脚 39 | RA7 — General-purpose I/O / analog input |
| 引脚 40 | RB0 — General-purpose I/O / programming |
| 引脚 41 | RB1 — General-purpose I/O / programming |
| 引脚 42 | RB2 — General-purpose I/O |
| 引脚 43 | RB3 — General-purpose I/O |
| 引脚 44 | RB4 — General-purpose I/O |
| 引脚 45 | RB5 — General-purpose I/O |
| 引脚 46 | RB6 — General-purpose I/O / programming clock |
| 引脚 47 | RB7 — General-purpose I/O / programming data |
| 引脚 48 | RB8 — General-purpose I/O |
| 引脚 49 | RB9 — General-purpose I/O |
| 引脚 50 | RB10 — General-purpose I/O |
| 引脚 51 | RB11 — General-purpose I/O |
| 引脚 52 | RB12 — General-purpose I/O |
| 引脚 53 | RB13 — General-purpose I/O |
| 引脚 54 | RB14 — General-purpose I/O |
| 引脚 55 | RB15 — General-purpose I/O |
| 引脚 56 | VSS — Ground reference |
| 引脚 57 | VDD — Core supply voltage (3.3 V) |
| 引脚 58 | RC1 — General-purpose I/O |
| 引脚 59 | RC2 — General-purpose I/O |
| 引脚 60 | RC3 — General-purpose I/O |
| 引脚 61 | RC4 — General-purpose I/O |
| 引脚 62 | VDD — Core supply voltage (3.3 V) |
| 引脚 63 | VBUS — USB bus voltage detect |
| 引脚 64 | VDD — Core supply voltage (3.3 V) |
| 引脚 65 | RC5 — General-purpose I/O |
| 引脚 66 | RC6 — General-purpose I/O |
| 引脚 67 | RC7 — General-purpose I/O |
| 引脚 68 | RC8 — General-purpose I/O |
| 引脚 69 | RC9 — General-purpose I/O |
| 引脚 70 | VDD — Core supply voltage (3.3 V) |
| 引脚 71 | VSS — Ground reference |
| 引脚 72 | RC10 — General-purpose I/O |
| 引脚 73 | RC11 — General-purpose I/O |
| 引脚 74 | RC12 — General-purpose I/O |
| 引脚 75 | RC13 — General-purpose I/O |
| 引脚 76 | RC14 — General-purpose I/O |
| 引脚 77 | RC15 — General-purpose I/O |
| 引脚 78 | RD0 — General-purpose I/O / PMP data line |
| 引脚 79 | RD1 — General-purpose I/O / PMP data line |
| 引脚 80 | RD2 — General-purpose I/O / PMP data line |
| 引脚 81 | RD3 — General-purpose I/O / PMP data line |
| 引脚 82 | RD4 — General-purpose I/O / PMP data line |
| 引脚 83 | RD5 — General-purpose I/O / PMP data line |
| 引脚 84 | RD6 — General-purpose I/O / PMP data line |
| 引脚 85 | RD7 — General-purpose I/O / PMP data line |
| 引脚 86 | RD8 — General-purpose I/O / PMP data line |
| 引脚 87 | RD9 — General-purpose I/O / PMP data line |
| 引脚 88 | RD10 — General-purpose I/O / PMP data line |
| 引脚 89 | RD11 — General-purpose I/O / PMP data line |
| 引脚 90 | RD12 — General-purpose I/O / PMP data line |
| 引脚 91 | RD13 — General-purpose I/O / PMP data line |
| 引脚 92 | RD14 — General-purpose I/O / PMP data line |
| 引脚 93 | RD15 — General-purpose I/O / PMP data line |
| 引脚 94 | VSS — Ground reference |
| 引脚 95 | VDD — Core supply voltage (3.3 V) |
| 引脚 96 | RE0 — General-purpose I/O |
| 引脚 97 | RE1 — General-purpose I/O |
| 引脚 98 | RE2 — General-purpose I/O |
| 引脚 99 | RE3 — General-purpose I/O |
| 引脚 100 | RE4 — General-purpose I/O |
典型应用
PIC32MX675F256L-80I/PF 适用于 6 应用s: 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.
推荐
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.
推荐
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.
推荐
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.
推荐
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.
推荐
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.
推荐
推荐产品汇总
工程参考数据： PIC32MX675F256L-80I/PF ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | 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) |
关键差异点
- Same 100-pin TQFP (14x14) footprint with extended temperature grade （对比 PIC32MX675F256L-80V/PF)
- Integrated Ethernet MAC and USB OTG in a single MCU （对比 PIC32MX575F256L-80I/PF)
- Largest Flash density in the PIC32MX5/6/7 family per footprint （对比 PIC32MX675F256L-80I/PT)
设计说明
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.
合规信息
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.
