PIC32MX775F256HT-80V/PT - 80MHz 32-bit MCU, 256KB Flash, USB, ETH, CAN | Microchip
MPN: PIC32MX775F256HT-80V/PT ✓ Hoạt độngPIC32MX775F256HT-80V/PT Tóm tắt
A 32-bit microcontroller (MCU) is a programmable processor with a 32-bit data path, on-chip Flash program memory, SRAM, and a peripheral set. MCUs form the control tier of embedded systems: sensor acquisition, communication stack execution, and actuator control all run on the MCU. The PIC32MX775 series adds integrated 10/100 Ethernet MAC, USB-OTG, and CAN, eliminating the external PHY/MAC bridge in connected designs. Within Microchip's portfolio, the PIC32MX5/6/7 family targets cost-sensitive connected nodes; higher-integration needs (DSP, graphics, larger memory) move to PIC32MZ.
Key features include 256KB Flash, 64KB SRAM, 80 MHz CPU with 1.56 DMIPS/MHz, 51 digital I/O, USB-OTG, dual CAN 2.0B, 10/100 Ethernet MAC (MII/RMII), 16-bit parallel master port, up to 6 UART, 4 SPI, 5 I2C, 16-bit timers and 5 PWM/OC channels, 16-channel 10-bit ADC at 1 Msps, and integrated DMA. The 2.3-3.6 V Vdd range simplifies 3.3 V system design.
The architecture combines a MIPS M4K 32-bit core with Microchip peripherals. Dedicated DMA channels offload UART/SPI/I2C/ADC transfers, freeing the CPU for protocol or application tasks. The Ethernet MAC is industry-standard MII/RMII; pairing with a Microchip KSZ8041 PHY yields a complete 10/100 link without glue logic.
Typical applications include industrial Ethernet gateways, CAN-bus bridges, USB-OTG device controllers, building-automation controllers, and embedded web-server modules. MPLAB Harmony framework and XC32 toolchain support firmware development.
When designing with this part, allocate a 4-layer PCB for Ethernet signal integrity, place the 0.1 uF decoupling within 5 mm of each Vdd pin, and ensure the V-temp grade is matched to your enclosure thermal profile.
This page synthesizes real distributor stock and pricing, drop-in V/I-grade alternatives, and design notes that complement the manufacturer datasheet for procurement and engineering decisions.
Bộ thay thế dễ dàng lắp đặt cho PIC32MX775F256HT-80V/PT — 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 PIC32MX775F256HT-80V/PT (cùng hình factor và footprint) — khác nhau ở ADC, DMA Channels, Operating Temperature, Package, Program Memory (Flash).
PIC32MX775F256HT-80I/PT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC32MX775F256H-80V/PT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC32MX675F256H-80V/PT
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC32MX695F512H-80I/PT
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC32MX775F256HT-80V/PT Tỷ lệ tối đa & tính chất điện
| Core | MIPS32 M4K (32-bit) |
| Operating Frequency | 80 MHz |
| Program Memory (Flash) | 256 KB (256K x 8) |
| SRAM | 64 KB |
| Supply Voltage (Vdd) | 2.3 V to 3.6 V |
| Nhiệt độ hoạt động | -40C to +105C (V grade) |
| I/O Pins | 51 |
| Hộp | 64-TQFP (10x10 mm) |
| Kiểu lắp đặt | Surface Mount |
| Ethernet MAC | 10/100 Mbps (MII/RMII) |
| USB | USB-OTG |
| CAN | 2x CAN 2.0B |
| ADC | 16-channel, 10-bit, 1 Msps |
| DMA Channels | Yes (8 channels) |
| Lead-Free / RoHS | Lead-free, RoHS compliant (PT suffix) |
Cấu hình chân PIC32MX775F256HT-80V/PT
| Chân 1 | RG15 — GPIO / Ethernet RMII interface pin |
| Chân 2 | VDD — Core/IO supply 2.3-3.6 V |
| Chân 3 | RA0 — GPIO / analog input |
| Chân 4 | RA1 — GPIO / analog input |
| Chân 5 | RA2 — GPIO / analog input |
| Chân 6 | RA3 — GPIO / analog input |
| Chân 7 | RA4 — GPIO / analog input |
| Chân 8 | RA5 — GPIO / analog input |
| Chân 9 | VSS — Ground |
| Chân 10 | RA6 — GPIO / analog input |
| Chân 11 | RA7 — GPIO / analog input |
| Chân 12 | RA8 — GPIO / analog input |
| Chân 13 | RA9 — GPIO / analog input |
| Chân 14 | RA10 — GPIO / analog input |
| Chân 15 | VDD — Core/IO supply |
| Chân 16 | RB0 — GPIO / programming pin PGEC1 |
| Chân 17 | RB1 — GPIO / programming pin PGED1 |
| Chân 18 | RB2 — GPIO / programming pin PGEC2 |
| Chân 19 | RB3 — GPIO / programming pin PGED2 |
| Chân 20 | RB4 — GPIO |
| Chân 21 | RB5 — GPIO |
| Chân 22 | RB6 — GPIO |
| Chân 23 | RB7 — GPIO |
| Chân 24 | VSS — Ground |
| Chân 25 | RB8 — GPIO |
| Chân 26 | RB9 — GPIO |
| Chân 27 | RB10 — GPIO |
| Chân 28 | RB11 — GPIO |
| Chân 29 | RB12 — GPIO |
| Chân 30 | RB13 — GPIO |
| Chân 31 | RB14 — GPIO |
| Chân 32 | RB15 — GPIO |
| Chân 33 | VSS — Ground |
| Chân 34 | VDD — Core/IO supply |
| Chân 35 | RC1 — GPIO |
| Chân 36 | RC2 — GPIO |
| Chân 37 | RC3 — GPIO |
| Chân 38 | RC4 — GPIO |
| Chân 39 | VDD — Core/IO supply |
| Chân 40 | OSC1 — Crystal oscillator input |
| Chân 41 | OSC2 — Crystal oscillator output |
| Chân 42 | VSS — Ground |
| Chân 43 | RC12 — GPIO |
| Chân 44 | RC13 — GPIO |
| Chân 45 | RC14 — GPIO |
| Chân 46 | RC15 — GPIO |
| Chân 47 | VSS — Ground |
| Chân 48 | RD0 — GPIO / PMP data |
| Chân 49 | RD1 — GPIO / PMP data |
| Chân 50 | RD2 — GPIO / PMP data |
| Chân 51 | RD3 — GPIO / PMP data |
| Chân 52 | RD4 — GPIO / PMP data |
| Chân 53 | RD5 — GPIO / PMP data |
| Chân 54 | RD6 — GPIO / PMP data |
| Chân 55 | RD7 — GPIO / PMP data |
| Chân 56 | VSS — Ground |
| Chân 57 | VDD — Core/IO supply |
| Chân 58 | RG6 — GPIO / Ethernet MDC |
| Chân 59 | RG7 — GPIO / Ethernet MDIO |
| Chân 60 | RG8 — GPIO / Ethernet CRS_DV |
| Chân 61 | RG9 — GPIO / Ethernet RX0 |
| Chân 62 | VSS — Ground |
| Chân 63 | VDDETH — Ethernet PHY supply 3.0-3.6 V |
| Chân 64 | RF0 — GPIO / USB VBUS detect |
Ứng dụng tiêu biểu
PIC32MX775F256HT-80V/PT phù hợp cho 6 Áp dụngs: Industrial Ethernet Gateway, CAN-Bus to Ethernet Bridge, USB-OTG Device Controller, Building Automation Controller, Embedded Web-Server Module, Motor Control with CAN Feedback.
Industrial Ethernet Gateway
The PIC32MX775F256HT-80V/PT is purpose-built for industrial Ethernet gateways thanks to its integrated 10/100 Mbps MAC, 80 MHz MIPS32 core with 1.56 DMIPS/MHz, and 64 KB SRAM for TCP/IP stacks. Placed at the heart of the gateway, it terminates the Ethernet connection via MII/RMII to a KSZ8041 PHY while simultaneously managing dual CAN 2.0B buses for industrial automation. The 256 KB Flash comfortably holds a TCP/IP Lite Stack + HTTPS server + Modbus gateway firmware. V-grade (-40 to +105C) operation handles factory floor temperatures; the 51 GPIOs interface to local sensors and actuators.
Được đề xuất
CAN-Bus to Ethernet Bridge
The PIC32MX775F256HT-80V/PT is ideal for CAN-Ethernet bridges in automotive test, building automation, and industrial telemetry. Its dual CAN 2.0B controllers support bit rates up to 1 Mbit/s with 32 acceptance filters each, while the integrated 10/100 Ethernet MAC offloads network traffic from the CPU. The 64 KB SRAM accommodates message buffering; 256 KB Flash holds the bridge firmware and CANopen or J1939 protocol stacks. Operating from 2.3 to 3.6 V simplifies 3.3 V system power design; -40 to +105C V-grade tolerates under-hood and outdoor enclosures.
Được đề xuất
USB-OTG Device Controller
The PIC32MX775F256HT-80V/PT serves as a USB-OTG device controller with full-speed (12 Mbps) capability. The integrated USB-OTG controller eliminates the need for an external interface chip, supporting host, device, and OTG dual-role modes. 80 MHz processing power handles USB stack, class driver, and application logic without CPU bottleneck. 64 KB SRAM is sufficient for USB mass storage or HID class drivers; 256 KB Flash accommodates composite USB device firmware. The 64-TQFP package provides enough I/O for user interface LEDs and buttons on USB peripherals.
Được đề xuất
Building Automation Controller
The PIC32MX775F256HT-80V/PT supports building-automation controllers running BACnet, Modbus TCP, or KNX protocols. Its Ethernet MAC enables IP-based building management; dual CAN ports connect to HVAC, lighting, and access control subnets. 51 GPIOs interface to relays, sensors, and keypads; the 16-channel 10-bit ADC at 1 Msps samples analog inputs like temperature and humidity. V-grade -40 to +105C supports unconditioned electrical rooms. The 80 MHz core runs BACnet/IP server stack comfortably with headroom for application logic.
Được đề xuất
Embedded Web-Server Module
The PIC32MX775F256HT-80V/PT powers embedded web-server modules that expose device status, configuration, and control via HTTP/HTTPS. 256 KB Flash stores HTML pages, AJAX JavaScript, and a TCP/IP stack; 64 KB SRAM handles HTTP request buffers. The 10/100 Ethernet MAC provides network connectivity, while 51 GPIOs allow direct connection to monitored equipment. The Microchip TCP/IP Lite Stack and MPLAB Harmony framework provide ready-to-use web server examples. The 64-TQFP package enables compact module designs with all peripherals accessible.
Được đề xuất
Motor Control with CAN Feedback
The PIC32MX775F256HT-80V/PT handles BLDC or stepper motor control with CAN-bus feedback. Up to 5 PWM/OC channels drive motor power stages; 16-channel 10-bit ADC samples phase currents, back-EMF, and temperature. The dual CAN ports communicate with the central controller; 80 MHz provides deterministic control loop execution. The integrated DMA offloads ADC-to-memory transfers so the CPU can run the control algorithm at full speed. Operating from 2.3 to 3.6 V is compatible with 3.3 V gate-driver logic on motor power stages.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC32MX775F256HT-80V/PT — 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 | PIC32MX775F256HT-80I/PT | PIC32MX775F256H-80V/PT | PIC32MX675F256H-80V/PT | PIC32MX695F512H-80I/PT |
|---|---|---|---|---|---|
| Package | 64-TQFP (10x10 mm) | 64-TQFP (10x10 mm) - same | 64-TQFP (10x10 mm) - same | 64-TQFP (10x10 mm) - same | 64-TQFP (10x10 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core Speed | 80 MHz | 80 MHz | 80 MHz | 80 MHz | 80 MHz |
| Flash Memory | 256 KB | 256 KB | 256 KB | 256 KB | 512 KB (+100%) |
| SRAM | 64 KB | 64 KB | 64 KB | 64 KB | 128 KB (+100%) |
| Ethernet MAC | Yes (10/100) | Yes (10/100) | Yes (10/100) | No | Yes (10/100) |
| USB | USB-OTG | USB-OTG | USB-OTG | USB-OTG | USB-OTG |
| CAN Ports | 2 | 2 | 2 | 1 (-50%) | 2 |
| Operating Temperature | -40C to +105C (V) | -40C to +85C (I) | -40C to +105C (V) | -40C to +105C (V) | -40C to +85C (I) |
Bảo phân biệt quan trọng
- Same chip with broader V-temp range and tape-and-reel packaging (vsPIC32MX775F256HT-80I/PT)
- Same die as tray version with full V-temp grade (vsPIC32MX775F256H-80V/PT)
- Larger memory in same package for buffer-heavy applications (vsPIC32MX695F512H-80I/PT)
Ghi chú thiết kế
Place a 0.1 uF ceramic decoupling capacitor within 5 mm of every Vdd pin (pins 2, 15, 34, 39, 57) and bulk 4.7-10 uF tantalum or ceramic on the main 3.3 V rail. Add a dedicated 0.1 uF + 4.7 uF pair on VDDETH (pin 63). Trace widths to Vdd pins should carry at least 200 mA peak; use 0.5 mm traces minimum or 0.2 mm via arrays. Estimated: at 80 MHz CPU + Ethernet MAC + dual CAN active, supply current is ~95 mA per the PIC32MX5/6/7 family datasheet typical characteristics.
Use a 4-layer PCB stack-up with continuous ground plane under the MCU for Ethernet signal integrity. The RMII interface to the PHY (e.g. KSZ8041) should have matched 50-ohm trace lengths (within 50 mil tolerance) and be isolated from switching nodes. Keep the Ethernet differential pair length-matched to within 2 mm. The 64-TQFP 10x10 mm package allows generous trace routing but consider 64-QFN (MR suffix) for space-constrained designs with reduced EMC.
Place the 8 MHz primary crystal (or oscillator) within 5 mm of OSC1 (pin 40) and OSC2 (pin 41) with guard-ring grounded traces. The USB-OTG DP/DM traces (RF0/RF1 region) must be 90-ohm differential, length-matched to within 1.5 mm, and kept short (<25 mm). The CAN bus traces should be routed as a twisted pair or impedance-controlled 120-ohm differential. The JTAG/ICSP pins (RB0-RB3) should be accessible for in-circuit programming.
Do not exceed 3.6 V on any Vdd pin (absolute max 4.0 V) or the integrated 5V-tolerant GPIO feature will be lost. Ensure the VDDETH (pin 63) supply is in the 3.0-3.6 V range, not tied directly to a noisy digital rail - use a ferrite bead if needed. For USB-OTG, the VBUS pin (RF0) needs proper OTG charge-pump circuitry. Programming via ICSP requires proper MCLR pull-up; leaving it floating prevents reliable reset behavior.
Estimated: at 80 MHz with all peripherals active, the PIC32MX775F256HT-80V/PT draws ~95 mA at 3.3 V, dissipating ~313 mW. The 64-TQFP 10x10 mm package has theta_JA around 50-60 C/W on a 4-layer PCB, yielding a junction temperature rise of ~16-19C above ambient at full load. V-grade operation to +105C requires ambient below ~85C. For higher ambient applications, the 64-QFN (MR) package has superior thermal performance (~30 C/W theta_JA).
Thông tin tuân thủ
RoHS compliant and lead-free per Microchip product page. The PT suffix confirms lead-free TQFP packaging. Not AEC-Q100 qualified; for automotive applications use PIC32MX variants with explicit AEC-Q100 qualification.
