PIC32MX675F256LT-80V/PF - 80MHz 32-bit MCU w/ 256KB Flash & Ethernet
MPN: PIC32MX675F256LT-80V/PF ✓ Hoạt độngPIC32MX675F256LT-80V/PF Tóm tắt
A 32-bit microcontroller (MCU) is an embedded processor with on-chip Flash, SRAM and peripherals that executes firmware directly from non-volatile memory. PIC32MX devices use the MIPS32 M4K core and sit in the broader hierarchy of microcontrollers -> embedded processors -> semiconductors, with a focus on connectivity-rich applications such as industrial control, consumer electronics and connected appliances. The PIC32MX5/6/7 family specifically targets an integrated devices market, where on-chip MAC and USB-OTG reduce BOM cost.
Key features of this part include 80 MHz core / 50 MHz peripheral bus operation, 256 KB Flash, 64 KB RAM, a DMA controller with 8 channels, a 10-bit ADC up to 1 Msps with 16 channels, two comparators, five 16-bit timers, and a Real-Time Clock/Calendar. The Ethernet MAC supports RMII/MII PHY interfaces for 10/100 Mbps full-duplex operation. A full-speed USB-OTG controller with on-chip transceiver eliminates the need for an external PHY.
The architecture combines a Harvard-style MIPS M4K core with a multi-vector interrupt controller and a Peripheral Pin Select (PPS) mapping engine that remaps digital peripherals to virtually any I/O pin. The 100-pin TQFP exposes 53 I/Os, of which most are 5V-tolerant in input mode, simplifying interfacing to legacy 5V logic. An integrated voltage regulator supports 2.3V-3.6V single-supply operation, enabling direct Li-Ion or 3.3V regulated designs.
Typical applications include industrial Ethernet gateways, USB-OTG device controllers, HMI panels, point-of-sale terminals, and home/building automation controllers. The combination of Ethernet, USB and multiple serial interfaces suits connected embedded systems with mixed communication needs.
When designing with this device, ensure the 80 MHz part is paired with an 80 MHz-rated Ethernet PHY (such as the KSZ8041) and that PCB layout follows MII trace-length guidelines. Decoupling requires at least one 0.1 uF ceramic capacitor per power pin plus a bulk 10 uF capacitor on VDD.
This page synthesizes distributor pricing, drop-in alternatives within the PIC32MX family, and practical design notes not found in the manufacturer datasheet.
Bộ thay thế dễ dàng lắp đặt cho PIC32MX675F256LT-80V/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 PIC32MX675F256LT-80V/PF (cùng hình factor và footprint) — khác nhau ở Package, Core Architecture, Timers, Operating Temperature, ADC.
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-80V/PF
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC32MX575F256LT-80V/PF
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC32MX664F128LT-I/PF
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC32MX575F512LT-80V/PF
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC32MX675F256LT-80V/PF Tỷ lệ tối đa & tính chất điện
| Core Architecture | MIPS32 M4K 32-bit |
| Maximum CPU Speed | 80 MHz |
| Program Memory (Flash) | 256 KB (256K x 8) |
| Data Memory (SRAM) | 64 KB |
| Operating Voltage | 2.3 V to 3.6 V |
| I/O Pins | 53 |
| Hộp | 100-TQFP (14x14 mm, TRAY) |
| Ethernet MAC | 10/100 Mbps (RMII/MII) |
| USB | USB-OTG Full-Speed (on-chip transceiver) |
| ADC | 10-bit, 16 channels, 1 Msps |
| DMA Channels | 8 |
| UART / SPI / I2C | 5 UART / 2 SPI / 2 I2C |
| Timers | Five 16-bit + two 32-bit |
| Nhiệt độ hoạt động | -40C to +105C (V = automotive grade) |
| Trạng thái RoHS | Compliant (lead-free) |
| Kiểu lắp đặt | Surface Mount |
Cấu hình chân PIC32MX675F256LT-80V/PF
| Chân 1 | RF5 — General purpose I/O (PMP) |
| Chân 2 | RF6 — General purpose I/O (PMP) |
| Chân 3 | RF7 — General purpose I/O (PMP) |
| Chân 4 | RF8 — General purpose I/O (PMP) |
| Chân 5 | RG6 — General purpose I/O |
| Chân 6 | RG7 — General purpose I/O |
| Chân 7 | RG8 — General purpose I/O |
| Chân 8 | VDD — Supply voltage (2.3-3.6V) |
| Chân 9 | VSS — Ground |
| Chân 10 | RG9 — General purpose I/O |
| Chân 11 | RA0 — Analog input / GPIO |
| Chân 12 | RA1 — Analog input / GPIO |
| Chân 13 | RA2 — Analog input / GPIO |
| Chân 14 | RA3 — Analog input / GPIO |
| Chân 15 | RA4 — Analog input / GPIO |
| Chân 16 | RA5 — Analog input / GPIO |
| Chân 17 | RA6 — Analog input / GPIO |
| Chân 18 | RA7 — Analog input / GPIO |
| Chân 19 | RA8 — Analog input / GPIO |
| Chân 20 | RA9 — Analog input / GPIO |
| Chân 21 | RA10 — Analog input / GPIO |
| Chân 22 | AVDD — Analog supply voltage |
| Chân 23 | AVSS — Analog ground |
| Chân 24 | RA11 — Analog input / GPIO |
| Chân 25 | RA12 — Analog input / GPIO |
| Chân 26 | RA13 — Analog input / GPIO |
| Chân 27 | RA14 — Analog input / GPIO |
| Chân 28 | RA15 — Analog input / GPIO |
| Chân 29 | RB0 — GPIO with CN interrupt |
| Chân 30 | RB1 — GPIO with CN interrupt |
| Chân 31 | RB2 — GPIO with CN interrupt |
| Chân 32 | RB3 — GPIO with CN interrupt |
| Chân 33 | RB4 — GPIO with CN interrupt |
| Chân 34 | RB5 — GPIO with CN interrupt |
| Chân 35 | RB6 — GPIO with CN interrupt |
| Chân 36 | RB7 — GPIO with CN interrupt |
| Chân 37 | RB8 — GPIO with CN interrupt |
| Chân 38 | RB9 — GPIO with CN interrupt |
| Chân 39 | RB10 — GPIO with CN interrupt |
| Chân 40 | RB11 — GPIO with CN interrupt |
| Chân 41 | RB12 — GPIO with CN interrupt |
| Chân 42 | RB13 — GPIO with CN interrupt |
| Chân 43 | RB14 — GPIO with CN interrupt |
| Chân 44 | RB15 — GPIO with CN interrupt |
| Chân 45 | RC1 — GPIO / Ethernet TX (ETH) |
| Chân 46 | RC2 — GPIO / Ethernet (ETH) |
| Chân 47 | RC3 — GPIO / Ethernet (ETH) |
| Chân 48 | RC4 — GPIO / Ethernet (ETH) |
| Chân 49 | VDD — Supply voltage |
| Chân 50 | VSS — Ground |
| Chân 51 | RC5 — GPIO / Ethernet (ETH) |
| Chân 52 | RC6 — GPIO / Ethernet (ETH) |
| Chân 53 | RC7 — GPIO / Ethernet (ETH) |
| Chân 54 | RC8 — GPIO / Ethernet (ETH) |
| Chân 55 | RC9 — GPIO / Ethernet (ETH) |
| Chân 56 | RC10 — GPIO / USB VBUS |
| Chân 57 | RC11 — GPIO / USB D- |
| Chân 58 | RC12 — GPIO / USB D+ |
| Chân 59 | RC13 — GPIO |
| Chân 60 | RC14 — GPIO |
| Chân 61 | RC15 — GPIO |
| Chân 62 | RD0 — GPIO (PMP) |
| Chân 63 | RD1 — GPIO (PMP) |
| Chân 64 | RD2 — GPIO (PMP) |
| Chân 65 | RD3 — GPIO (PMP) |
| Chân 66 | RD4 — GPIO (PMP) |
| Chân 67 | RD5 — GPIO (PMP) |
| Chân 68 | RD6 — GPIO (PMP) |
| Chân 69 | RD7 — GPIO (PMP) |
| Chân 70 | RD8 — GPIO (PMP) |
| Chân 71 | RD9 — GPIO (PMP) |
| Chân 72 | RD10 — GPIO (PMP) |
| Chân 73 | RD11 — GPIO (PMP) |
| Chân 74 | RD12 — GPIO (PMP) |
| Chân 75 | VDD — Supply voltage |
| Chân 76 | VSS — Ground |
| Chân 77 | RD13 — GPIO (PMP) |
| Chân 78 | RD14 — GPIO (PMP) |
| Chân 79 | RD15 — GPIO (PMP) |
| Chân 80 | RE0 — GPIO (PMP) |
| Chân 81 | RE1 — GPIO (PMP) |
| Chân 82 | RE2 — GPIO (PMP) |
| Chân 83 | RE3 — GPIO (PMP) |
| Chân 84 | RE4 — GPIO (PMP) |
| Chân 85 | RE5 — GPIO (PMP) |
| Chân 86 | RE6 — GPIO (PMP) |
| Chân 87 | RE7 — GPIO (PMP) |
| Chân 88 | RE8 — GPIO |
| Chân 89 | RE9 — GPIO |
| Chân 90 | RF0 — GPIO (PMP) |
| Chân 91 | RF1 — GPIO (PMP) |
| Chân 92 | RF2 — GPIO (PMP) |
| Chân 93 | RF3 — GPIO (PMP) |
| Chân 94 | RF4 — GPIO (PMP) |
| Chân 95 | RG0 — GPIO |
| Chân 96 | RG1 — GPIO |
| Chân 97 | RG2 — GPIO |
| Chân 98 | RG3 — GPIO |
| Chân 99 | MCLR — Master clear / reset input (active low) |
| Chân 100 | OSC1 — Crystal oscillator input |
Ứng dụng tiêu biểu
PIC32MX675F256LT-80V/PF phù hợp cho 7 Áp dụngs: Industrial Ethernet Gateway, USB-OTG Device/Host Controller, Human-Machine Interface (HMI) Panels, Point-of-Sale (POS) Terminal, Building Automation Controller, Connected Home Gateway / IoT Bridge, Industrial Sensor Hub / Data Logger.
Industrial Ethernet Gateway
The PIC32MX675F256LT-80V/PF is purpose-built for industrial Ethernet gateway applications thanks to its integrated 10/100 Mbps MAC with MII/RMII PHY interface. The 80 MHz MIPS M4K core can sustain full-duplex 100 Mbps throughput with Microchip's Harmony TCP/IP stack while leaving cycles for application protocols (Modbus TCP, EtherNet/IP, MQTT-SN). The 256 KB Flash accommodates a TLS-capable TCP/IP stack plus custom gateway logic, and the DMA controller offloads packet copying from the CPU. Designers pair the MCU with an RMII PHY (e.g., KSZ8041) and a small magnetics module for a complete two-port Ethernet gateway in 20-30 sq cm.
Được đề xuất
USB-OTG Device/Host Controller
The PIC32MX675F256LT-80V/PF integrates a full-speed USB-OTG controller with an on-chip transceiver, removing the need for an external USB PHY and shrinking the BOM for USB peripherals. It supports Host, Device, and Dual-Role modes with SRP and HNP per the OTG supplement, enabling designs such as USB memory card readers, USB HID bridges, and USB-to-UART bridges. The 80 MHz core plus 8-channel DMA sustain full-speed (12 Mbps) USB throughput, and 64 KB RAM buffers USB packet payloads without bottleneck. Use external ESD protection (e.g., USBLC6-2SC6) on D+/D- lines.
Được đề xuất
Human-Machine Interface (HMI) Panels
With 53 GPIOs, 5 UARTs, 2 SPI channels and a Parallel Master Port (PMP), the PIC32MX675F256LT-80V/PF can drive TFT LCDs via PMP and concurrently connect to touch controllers, keypads, and serial sensors. The 80 MHz core renders buttons, fonts and waveforms via Microchip's Harmony Graphics Library on QVGA/WQVGA displays. The 256 KB Flash stores graphics assets and UI logic while 64 KB SRAM serves as the framebuffer and touch-event queue. Industrial-grade (-40C to +105C) parts handle factory-floor temperature ranges without additional conditioning.
Được đề xuất
Point-of-Sale (POS) Terminal
POS terminals need Ethernet for back-office sync, USB-OTG for peripherals (barcode scanners, cash drawers, printers), and serial ports for legacy equipment. The PIC32MX675F256LT-80V/PF delivers all three on one die, plus 256 KB Flash for payment firmware and EMV libraries. The 80 MHz performance sustains contactless card reader handling over SPI while maintaining TCP connectivity for transaction authorization. Industrial temperature grade ('V') supports kitchen/restaurant POS deployments with heat exposure.
Được đề xuất
Building Automation Controller
The PIC32MX675F256LT-80V/PF suits BACnet, Modbus, and KNX-style building automation controllers thanks to its mix of Ethernet (for IP-bus), UART (for RS-485 sensor trunks), and SPI/I2C (for local sensor hubs). The 80 MHz core runs BACnet/IP stack plus custom control loops, and 53 GPIOs interface to relay boards and triac drivers. Low sleep current with RTC and WDT retention supports battery-backed operation during AC mains loss. The 100-pin TQFP footprint is large enough for extensive GPIO memory without multiplexer tricks.
Được đề xuất
Connected Home Gateway / IoT Bridge
The PIC32MX675F256LT-80V/PF is well matched to consumer IoT bridges that aggregate Wi-Fi/Zigbee/Z-Wave peripherals and present them on Ethernet or USB-OTG to the home network. The integrated Ethernet MAC and USB-OTG simplify dual-radio designs, while the 256 KB Flash stores Wi-Fi/BLE companion-host firmware and 64 KB RAM handles protocol translation buffers. The 80 MHz core executes TLS handshakes and JSON/MQTT serialization without off-chip crypto accelerators. Use it with a Murata Type-1LD module for Wi-Fi or a BT830 module for BLE.
Được đề xuất
Industrial Sensor Hub / Data Logger
The PIC32MX675F256LT-80V/PF functions as a multi-sensor data logger using its 16-channel 10-bit ADC (1 Msps), 5 UARTs, 2 SPI and 2 I2C. The 256 KB Flash stores calibration tables and configuration, while 64 KB RAM buffers burst ADC samples streamed via DMA. With Ethernet MAC onboard, the logger streams continuous readings to a SCADA host without requiring a separate gateway. Industrial-grade (-40C to +105C) parts handle cabinet temperatures near motors and drives.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC32MX675F256LT-80V/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 | PIC32MX575F256L-80V/PF | PIC32MX664F128LT-I/PF |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 100-TQFP (14x14) | 100-TQFP (14x14) - same | 100-TQFP (14x14) - same | 100-TQFP (14x14) - same |
| Core Speed | 80 MHz | 80 MHz | 80 MHz | 80 MHz |
| Flash Memory | 256 KB | 256 KB | 256 KB | 128 KB (-50%) |
| SRAM | 64 KB | 64 KB | 64 KB | 32 KB (-50%) |
| Ethernet MAC | 10/100 Mbps | 10/100 Mbps | Not present | 10/100 Mbps |
| USB | USB-OTG Full-Speed | USB-OTG Full-Speed | Not present | USB-OTG Full-Speed |
| Temperature Grade | -40C to +105C (V) | -40C to +105C (V) | -40C to +105C (V) | -40C to +85C (I) |
| Packaging | Tape & Reel | Tray | Tray | Tape & Reel |
Bảo phân biệt quan trọng
- 256 KB Flash + 64 KB RAM is the sweet spot for Harmony TCP/IP stack with custom application code (vsPIC32MX664F128LT-I/PF)
- Industrial-grade -40C to +105C operating range ('V' suffix) (vsPIC32MX675F256LT-80I/PF)
- Integrated 10/100 Ethernet MAC plus USB-OTG on a single die (vsPIC32MX575F256L-80V/PF)
Ghi chú thiết kế
The PIC32MX675F256LT-80V/PF requires a clean 3.3 V regulated supply with at least 80 mA capability (typical VDD current is 50-70 mA at 80 MHz plus peripheral current). Place one 0.1 uF ceramic decoupling capacitor adjacent to each VDD/VSS pair (pins 8/9, 49/50, 75/76) plus a single 10 uF bulk tantalum or ceramic capacitor on the main VDD rail. For the analog supply AVDD/AVSS (pins 22/23), add a ferrite bead or 10 ohm resistor isolation from VDD plus a dedicated 0.1 uF + 10 uF decoupling pair to minimize ADC ADC reference. Estimated: typical active current = 50 mA + 5 mA analog = 55 mA; max rated VDD is 3.6 V (do not exceed).
For Ethernet MII/RMII operation, route the MII/RMII traces (RC1-RC9, plus ETH_CLK, ETH_CRS_DV, ETH_RX_DV, ETH_RX_ER, ETH_TX_EN, ETH_TXD0/1, ETH_RXD0/1) with 50 ohm characteristic impedance and length-matched within 50 mil of the PHY. Keep MII traces short (under 50 mm) and away from switching regulators and high-current traces. Place the RMII/MII PHY adjacent to the MCU's Ethernet pins to minimize trace length. The 25 MHz or 50 MHz RMII reference clock should originate from the PHY and feed back into the MCU's ETH_CLK pin.
Use a 4-layer PCB with a continuous ground plane beneath the MCU to provide controlled impedance and thermal dissipation. Route the 8 MHz primary crystal (or 14.7456 MHz if UART baud-rate accuracy is critical) traces within 5 mm of the OSC1/OSC2 pads and guard them with a ground ring. Keep the JTAG pins (TCK/TMS/TDO/TDI/TCK) accessible for in-circuit debugging via a 0.05 inch header. The exposed thermal pad is not present on 100-TQFP, so attach to a moderate copper pour on the top layer for thermal relief.
Avoid the common error of using the PIC32MX675F256L-80V/PF (tray) part number in the BOM when the SMT line is set up for tape-and-reel - this causes line stoppages. Verify the correct 'LT' (tape-and-reel) vs 'L' (tray) suffix. Also: do not exceed the 3.6 V absolute maximum on VDD, and do not rely on the internal 1.8 V regulator to source external loads (it is for the core only). Finally, do not forget Peripheral Pin Select (PPS) mapping in firmware - many peripherals require PPS configuration before use, and unmatched mapping is the most common cause of 'dead' UART/SPI/I2C peripherals.
Thông tin tuân thủ
RoHS and lead-free compliant per Microchip product page (/PF suffix). AEC-Q100 not qualified at part level - automotive customers should verify with Microchip for AEC-Q100 documentation.
