PIC32MX675F256LT-80I/PF - 80MHz 32-bit MCU 256KB Flash USB ENET | Microchip
MPN: PIC32MX675F256LT-80I/PF ✓ Hoạt độngPIC32MX675F256LT-80I/PF Tóm tắt
A 32-bit microcontroller (MCU) is a microprocessor that integrates the CPU core, program and data memory, peripherals, and interrupt logic onto a single IC. PIC32MX devices belong to the higher-tier family of Microchip's MIPS-based 32-bit portfolio, positioned as: PIC32MX microcontroller -> 32-bit MCU -> embedded microprocessor -> semiconductor. The M4K core provides single-cycle multiplication and hardware multiply-accumulate support, enabling deterministic real-time control at low power consumption.
Key features include 80 MHz maximum core clock, 1.56 DMIPS/MHz performance, 256 KB self-programmable Flash with live update support, 64 KB SRAM, integrated 10/100 Ethernet MAC with MII/RMII interface, USB 2.0 full-speed OTG, two I2C, two UART, two SPI, 16-channel 10-bit ADC at 1 Msps, five 16-bit timers/counters, and 53 general-purpose I/O pins. The device operates from 2.3 V to 3.6 V across the industrial -40 C to +85 C range.
The PIC32MX architecture uses a 5-stage pipeline Harvard memory layout, providing deterministic interrupt response and zero-wait-state Flash execution at full 80 MHz. Peripherals are interconnected through a 32-bit bus matrix and an 8-channel DMA engine, allowing high-throughput data movement between Ethernet, USB, ADC, and SPI without CPU intervention. The CTMU (Charge Time Measurement Unit) supports capacitive touch sensing, while the PMP (Parallel Master Port) connects to external displays or memory-mapped peripherals.
Typical applications include industrial Ethernet gateways, USB device controllers, building automation nodes, point-of-sale terminals, medical monitoring devices, and embedded web servers. The integrated Ethernet MAC significantly reduces BOM cost versus external PHY-based designs, while the USB OTG controller enables both host and device roles in a single interface.
Design with care for high-speed signal integrity. Place a 0.1 uF decoupling capacitor adjacent to every VDD/VDDCORE pin pair, with a bulk 10 uF tantalum capacitor at the regulator output. Route the Ethernet MII/RMII traces as a 50 ohm controlled-impedance group, and place the 25 MHz crystal within 200 mils of the OSC1/OSC2 pins to minimize jitter.
This page synthesizes distributor pricing, drop-in same-package alternatives from the PIC32MX family, and practical design notes not consolidated in the manufacturer datasheet.
Bộ thay thế dễ dàng lắp đặt cho PIC32MX675F256LT-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 PIC32MX675F256LT-80I/PF (cùng hình factor và footprint) — khác nhau ở ADC, Package, Ethernet MAC, USB, Core Architecture.
PIC32MX675F256L-80I/PF
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC32MX675F256LT-80I/BG
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC32MX675F256LT-80V/PF
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC32MX675F256L-80I/BG
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC32MX575F256LT-80I/PF
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC32MX575F512LT-80I/BG
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC32MX564F128LT-I/PF
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC32MX675F256LT-80I/PF Tỷ lệ tối đa & tính chất điện
| Core Architecture | MIPS32 M4K |
| Core Clock (max) | 80 MHz |
| Performance | 1.56 DMIPS/MHz |
| Program Memory (Flash) | 256 KB |
| Data Memory (SRAM) | 64 KB |
| Operating Voltage Range | 2.3 V to 3.6 V |
| Nhiệt độ hoạt động | -40 C to +85 C (Industrial) |
| Hộp | 100-pin TQFP (14x14 mm) |
| I/O Pins | 53 |
| Ethernet MAC | 10/100 Mbps (MII/RMII) |
| USB | USB 2.0 Full-Speed OTG |
| DMA Channels | 8 |
| ADC | 16-channel, 10-bit, 1 Msps |
| Timers | Five 16-bit |
| UART / SPI / I2C | 2 / 2 / 2 |
| Kiểu lắp đặt | Surface Mount |
| Lead-Free / RoHS | Yes / Compliant |
Cấu hình chân PIC32MX675F256LT-80I/PF
| Chân 1 | RF5 — General-purpose I/O / SDA2 (I2C2 data) |
| Chân 2 | RF4 — General-purpose I/O / SCL2 (I2C2 clock) |
| Chân 3 | RF3 — General-purpose I/O / USBID |
| Chân 4 | RF2 — General-purpose I/O / SDA1 (I2C1 data) |
| Chân 5 | RF1 — General-purpose I/O / SCL1 (I2C1 clock) |
| Chân 6 | RF0 — General-purpose I/O |
| Chân 7 | VDD |
| Chân 8 | RG15 — General-purpose I/O |
| Chân 9 | RG14 — General-purpose I/O |
| Chân 10 | RG13 — General-purpose I/O |
| Chân 11 | RG12 — General-purpose I/O |
| Chân 12 | RG11 — General-purpose I/O |
| Chân 13 | VSS — Ground reference |
| Chân 14 | RG10 — General-purpose I/O |
| Chân 15 | RG9 — General-purpose I/O |
| Chân 16 | RG8 — General-purpose I/O |
| Chân 17 | RG7 — General-purpose I/O / CIC2 (secondary Ethernet clock) |
| Chân 18 | RG6 — General-purpose I/O |
| Chân 19 | RG5 — General-purpose I/O |
| Chân 20 | RG4 — General-purpose I/O |
| Chân 21 | RG3 — General-purpose I/O |
| Chân 22 | RG2 — General-purpose I/O |
| Chân 23 | VSS — Ground reference |
| Chân 24 | RG1 — General-purpose I/O / TRCLK (trace clock) |
| Chân 25 | RG0 — General-purpose I/O / TRD0 (trace data 0) |
| Chân 26 | RA15 — General-purpose I/O / AVDD-related |
| Chân 27 | RA14 — General-purpose I/O |
| Chân 28 | RA13 — General-purpose I/O |
| Chân 29 | RA12 — General-purpose I/O |
| Chân 30 | RA11 — General-purpose I/O / AVDD |
| Chân 31 | RA10 — General-purpose I/O / AVSS |
| Chân 32 | RA9 — General-purpose I/O |
| Chân 33 | VDD — 2.3-3.6 V core supply |
| Chân 34 | RA8 — General-purpose I/O |
| Chân 35 | RA7 — General-purpose I/O |
| Chân 36 | RA6 — General-purpose I/O |
| Chân 37 | RA5 — General-purpose I/O |
| Chân 38 | RA4 — General-purpose I/O |
| Chân 39 | RA3 — General-purpose I/O |
| Chân 40 | RA2 — General-purpose I/O |
| Chân 41 | RA1 — General-purpose I/O |
| Chân 42 | RA0 — General-purpose I/O |
| Chân 43 | VSS — Ground reference |
| Chân 44 | RB15 — General-purpose I/O / OC5 (PWM) |
| Chân 45 | RB14 — General-purpose I/O / CN14 |
| Chân 46 | RB13 — General-purpose I/O / CN13 |
| Chân 47 | RB12 — General-purpose I/O / CN12 |
| Chân 48 | RB11 — General-purpose I/O / CN11 |
| Chân 49 | RB10 — General-purpose I/O / CN10 |
| Chân 50 | RB9 — General-purpose I/O / CN9 |
| Chân 51 | RB8 — General-purpose I/O / CN8 |
| Chân 52 | RB7 — General-purpose I/O / CN7 |
| Chân 53 | RB6 — General-purpose I/O / CN6 |
| Chân 54 | RB5 — General-purpose I/O / CN5 |
| Chân 55 | RB4 — General-purpose I/O / CN4 |
| Chân 56 | RB3 — General-purpose I/O / CN3 / AN3 |
| Chân 57 | RB2 — General-purpose I/O / CN2 / AN2 |
| Chân 58 | RB1 — General-purpose I/O / CN1 / AN1 |
| Chân 59 | RB0 — General-purpose I/O / CN0 / AN0 |
| Chân 60 | VSS — Ground reference |
| Chân 61 | VDD — 2.3-3.6 V core supply |
| Chân 62 | RC15 — General-purpose I/O / OC4 (PWM) |
| Chân 63 | RC14 — General-purpose I/O / OC3 (PWM) |
| Chân 64 | RC13 — General-purpose I/O |
| Chân 65 | RC12 — General-purpose I/O |
| Chân 66 | RC11 — General-purpose I/O |
| Chân 67 | RC10 — General-purpose I/O |
| Chân 68 | RC9 — General-purpose I/O |
| Chân 69 | RC8 — General-purpose I/O |
| Chân 70 | RC7 — General-purpose I/O |
| Chân 71 | RC6 — General-purpose I/O |
| Chân 72 | VCAP — External capacitor for internal 1.8V regulator (10uF low-ESR ceramic) |
| Chân 73 | RC5 — General-purpose I/O |
| Chân 74 | RC4 — General-purpose I/O |
| Chân 75 | RC3 — General-purpose I/O |
| Chân 76 | RC2 — General-purpose I/O |
| Chân 77 | RC1 — General-purpose I/O |
| Chân 78 | RC0 — General-purpose I/O |
| Chân 79 | VSS — Ground reference |
| Chân 80 | RD15 — General-purpose I/O / ETXD2 (Ethernet) |
| Chân 81 | RD14 — General-purpose I/O / ETXD3 (Ethernet) |
| Chân 82 | RD13 — General-purpose I/O / ETXCLK (Ethernet) |
| Chân 83 | RD12 — General-purpose I/O / ETXERR (Ethernet) |
| Chân 84 | RD11 — General-purpose I/O / ECRS (Ethernet) |
| Chân 85 | RD10 — General-purpose I/O / ECOL (Ethernet) |
| Chân 86 | RD9 — General-purpose I/O / ERXCLK (Ethernet) |
| Chân 87 | RD8 — General-purpose I/O / ERXDV (Ethernet) |
| Chân 88 | RD7 — General-purpose I/O / ERXD1 (Ethernet) |
| Chân 89 | RD6 — General-purpose I/O / ERXD0 (Ethernet) |
| Chân 90 | RD5 — General-purpose I/O / ERXERR (Ethernet) |
| Chân 91 | RD4 — General-purpose I/O / ETXD1 (Ethernet) |
| Chân 92 | RD3 — General-purpose I/O / ETXD0 (Ethernet) |
| Chân 93 | RD2 — General-purpose I/O / EMDIO (Ethernet mgmt) |
| Chân 94 | RD1 — General-purpose I/O / EMDC (Ethernet mgmt clock) |
| Chân 95 | RD0 — General-purpose I/O |
| Chân 96 | OSC1 — Primary oscillator crystal input (8-25 MHz fundamental or ceramic resonator) |
| Chân 97 | OSC2 — Primary oscillator crystal output |
| Chân 98 | MCLR — Master clear reset input (active-low, drive low to reset) |
| Chân 99 | VSS — Ground reference |
| Chân 100 | RF6 — General-purpose I/O / U2RTS (UART2 ready-to-send) |
Ứng dụng tiêu biểu
PIC32MX675F256LT-80I/PF phù hợp cho 7 Áp dụngs: Industrial Ethernet Gateway, USB Device/Host Controller, Building Automation Node, Medical Patient Monitoring, Embedded Web Server / IoT Node, Point-of-Sale (POS) Terminal, Capacitive Touch Control Panel.
Industrial Ethernet Gateway
The PIC32MX675F256LT-80I/PF is ideal for industrial Ethernet gateway designs requiring integrated MAC and proven TCP/IP stack support. Its integrated 10/100 Ethernet MAC with MII/RMII interface eliminates the need for an external controller, pairing with low-cost PHYs such as LAN8720 or DP83848 to form a complete two-port industrial node. The 80 MHz MIPS M4K core delivers sufficient headroom for Modbus TCP, EtherNet/IP, or PROFINET RT stacks, while the 256 KB Flash and 64 KB RAM host the full MLA TCP/IP or Harmony Net stack with room for application logic. The 8-channel DMA engine offloads packet copy operations between MAC descriptors and application buffers, freeing the CPU for protocol processing and reducing interrupt load.
Được đề xuất
USB Device/Host Controller
The integrated USB 2.0 full-speed OTG controller with on-chip PHY makes this MCU well suited for USB device, host, or dual-role applications such as data loggers, HID peripherals, or USB-to-UART bridges. The USB OTG hardware negotiates host and device roles automatically, with the 8-channel DMA engine sustaining 12 Mbps USB throughput while leaving CPU cycles for application processing. Microchip's USB stack (included in Harmony) provides CDC, HID, MSD, and vendor-class drivers with example projects, reducing development time for both HID game controllers and CDC virtual COM port designs. Pair with external ESD protection such as USBLC6-2SC6 on the D+/D- lines for industrial EMC compliance.
Được đề xuất
Building Automation Node
Building automation controllers benefit from the PIC32MX675's combination of Ethernet, USB, and multiple serial interfaces for sensor aggregation and BACnet/Modbus gateway functions. The two UARTs support RS-485 transceivers for industrial sensor busses, while the two I2C controllers connect to environmental sensors and EEPROM memory. The 16-channel 10-bit ADC at 1 Msps handles analog inputs from temperature, pressure, and humidity transducers. The CTMU peripheral enables capacitive touch keypads for room control panels without dedicated touch ICs. Industrial -40 C to +85 C operation ensures reliable deployment in unheated equipment closets and rooftop HVAC enclosures.
Được đề xuất
Medical Patient Monitoring
The deterministic MIPS M4K core and 80 MHz processing power make the PIC32MX675F256LT-80I/PF suitable for low-to-mid complexity medical monitoring peripherals such as pulse oximeter front-ends, blood-pressure cuffs, and portable diagnostic data loggers. The integrated 16-channel ADC supports multiple sensor inputs, while the Ethernet MAC enables connectivity to hospital networks for bedside data collection. Note that this device does not carry IEC 60730/medical safety certifications by default; designs targeting FDA-cleared medical devices must perform their own compliance validation and consider the medical-grade PIC32MK or PIC32MM families for higher-integrity applications. The 256 KB Flash supports secure bootloaders for field firmware updates.
Được đề xuất
Embedded Web Server / IoT Node
The integrated Ethernet MAC and 64 KB SRAM enable self-contained embedded web servers for IoT nodes, sensor hubs, and remote telemetry units. Microchip's MLA TCP/IP or Harmony Net stacks provide HTTP, TCP, UDP, and DHCP servers with example firmware for web-based configuration UIs and SNMP monitoring. The PIC32MX675F256LT-80I/PF serves as the IoT node's main MCU and networking co-processor in a single chip, reducing BOM cost versus multi-chip Ethernet solutions. The PMP (Parallel Master Port) connects to a small TFT LCD for local status display, and the dual SPI controllers support external Flash for data logging or WiFi modules for hybrid Ethernet/WiFi redundancy.
Được đề xuất
Point-of-Sale (POS) Terminal
POS terminals benefit from the PIC32MX675's combined Ethernet, USB, and high-performance 32-bit core for payment processing peripherals and receipt printers. The USB OTG controller supports USB barcode scanners, magnetic-stripe readers, and customer-facing displays over USB HID or CDC classes. The integrated Ethernet MAC connects to store networks for transaction authorization, while the 80 MHz core runs cryptographic libraries for end-to-end encryption. The 256 KB Flash stores the bootloader and main application, and the dual UART controllers drive the receipt printer and serial cash drawer. The 53 GPIO pins interface to keypads, displays, and customer-facing indicator LEDs.
Được đề xuất
Capacitive Touch Control Panel
The PIC32MX675's CTMU (Charge Time Measurement Unit) provides hardware-based capacitive touch sensing across up to 16 channels, enabling glass-fronted control panels without dedicated touch ICs. The on-chip CTMU measures the discharge time of a reference capacitor through a sense pin, allowing reliable touch detection even with thick overlay glass up to 5 mm. Combined with the Ethernet MAC, designers can implement networked touch panels for smart-home, industrial, and appliance control applications. The 256 KB Flash stores the touch algorithm and communication stack, while the 64 KB RAM buffers the web page assets for remote configuration.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC32MX675F256LT-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-80I/PF | PIC32MX575F256LT-80I/PF | PIC32MX575F512LT-80I/BG |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 100-pin TQFP (14x14 mm) | 100-pin TQFP (14x14 mm) - same | 100-pin TQFP (14x14 mm) - same | 100-pin TQFP (14x14 mm) - same |
| Core Clock (max) | 80 MHz | 80 MHz | 80 MHz | 80 MHz |
| Flash Memory | 256 KB | 256 KB | 256 KB | 512 KB |
| SRAM | 64 KB | 64 KB | 64 KB | 64 KB |
| Ethernet MAC | 10/100 (MII/RMII) | 10/100 (MII/RMII) | Not integrated | Not integrated |
| USB | USB 2.0 Full-Speed OTG | USB 2.0 Full-Speed OTG | USB 2.0 Full-Speed OTG | USB 2.0 Full-Speed OTG |
| I/O Pins | 53 | 53 | 53 | 53 |
| Operating Temperature | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) |
| Unit Price @1000 | 6.45 USD | 6.45 USD | Lower (no Ethernet MAC) | Higher (more Flash) |
Bảo phân biệt quan trọng
- Integrated 10/100 Ethernet MAC versus MX575 series (vsPIC32MX575F256LT-80I/PF)
- Lower unit cost than 512KB Flash variant (vsPIC32MX575F512LT-80I/BG)
- Tape-and-reel versus tray packaging variant (vsPIC32MX675F256L-80I/PF)
Ghi chú thiết kế
Estimated: at 80 MHz full activity with all peripherals enabled, core current consumption is approximately 70 mA from the 2.3-3.6 V supply. Decouple every VDD pin pair with a 0.1 uF X7R ceramic capacitor placed within 50 mils (1.27 mm) of the pin pair, and add a single 10 uF bulk tantalum or ceramic capacitor at the regulator output. The internal 1.8 V regulator requires a low-ESR 10 uF ceramic on pin 72 (VCAP) for stability; do not use Y5V dielectric at this capacitor as ESR/temperature variation can cause regulator instability at high core load.
The 100-pin TQFP at 0.5 mm pitch requires 12 mil (0.30 mm) traces and 8 mil solder mask web. Use a 4-layer PCB with continuous VDD and VSS planes to minimize supply inductance for the 80 MHz switching core. Place the 8 MHz or 25 MHz primary crystal within 200 mils (5 mm) of OSC1/OSC2 pins, surrounded by a grounded copper guard ring to attenuate radiated noise coupling into adjacent analog signals such as ADC inputs.
Route Ethernet MII traces as a matched 50 ohm impedance group on the top layer over a continuous ground plane, keeping all 16 MII signals within 1 cm of matched lengths (within 25 mil skew). For RMII mode, the 50 MHz reference clock must be routed with controlled impedance and terminated at the PHY if trace length exceeds 50 mm. Place the PHY within 50 mm of the MCU and use series resistors near the PHY RX inputs to dampen reflections if cable ESD transients are anticipated.
A frequent mistake is leaving the MCLR pin floating. Always tie MCLR to VDD through a 10 kohm pull-up resistor and add a 100 nF decoupling capacitor to ground for noise immunity; without this, spurious resets will occur from EMI events. Another common error is configuring the ADC without a delay between channel switches - the 16-channel ADC requires a minimum 200 ns acquisition time, and reading immediately after a channel change introduces up to 1 LSB error in the conversion result.
Thông tin tuân thủ
RoHS and lead-free per Microchip product declaration. Not AEC-Q100 qualified - for automotive designs consider the PIC32MK family. Halogen-free status should be confirmed against the latest Microchip material declaration certificate.
