PIC32MX775F256HT-80V/PT - 80MHz 32-bit MCU, 256KB Flash, USB, ETH, CAN | Microchip
料号： PIC32MX775F256HT-80V/PT ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $11.42 | $11.42 |
| 10 | $10.27 | $102.70 |
| 100 | $9.13 | $913.00 |
| 500 | $8.21 | $4,105.00 |
| 1,000 | $7.65 | $7,650.00 |
PIC32MX775F256HT-80V/PT 概述
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.
直接替换替代料： PIC32MX775F256HT-80V/PT ——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： PIC32MX775F256HT-80V/PT （相同外形与封装尺寸） ——差异在于 ADC, DMA Channels, Operating Temperature, Package, Program Memory (Flash).
快速对比工具——选择替代料号进行并排对比：
PIC32MX775F256HT-80I/PT
✅ 直接替换📋 参考替代料（不在目录中）
PIC32MX775F256H-80V/PT
✅ 直接替换📋 参考替代料（不在目录中）
PIC32MX675F256H-80V/PT
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$6.58 / 个
查看数据手册 →PIC32MX695F512H-80I/PT
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$7.1 / 个
查看数据手册 →PIC32MX775F256HT-80V/PT 最大额定值与电气特性
| 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 |
| 工作温度 | -40C to +105C (V grade) |
| I/O Pins | 51 |
| 封装 | 64-TQFP (10x10 mm) |
| 安装类型 | 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) |
PIC32MX775F256HT-80V/PT 引脚配置
| 引脚 1 | RG15 — GPIO / Ethernet RMII interface pin |
| 引脚 2 | VDD — Core/IO supply 2.3-3.6 V |
| 引脚 3 | RA0 — GPIO / analog input |
| 引脚 4 | RA1 — GPIO / analog input |
| 引脚 5 | RA2 — GPIO / analog input |
| 引脚 6 | RA3 — GPIO / analog input |
| 引脚 7 | RA4 — GPIO / analog input |
| 引脚 8 | RA5 — GPIO / analog input |
| 引脚 9 | VSS — Ground |
| 引脚 10 | RA6 — GPIO / analog input |
| 引脚 11 | RA7 — GPIO / analog input |
| 引脚 12 | RA8 — GPIO / analog input |
| 引脚 13 | RA9 — GPIO / analog input |
| 引脚 14 | RA10 — GPIO / analog input |
| 引脚 15 | VDD — Core/IO supply |
| 引脚 16 | RB0 — GPIO / programming pin PGEC1 |
| 引脚 17 | RB1 — GPIO / programming pin PGED1 |
| 引脚 18 | RB2 — GPIO / programming pin PGEC2 |
| 引脚 19 | RB3 — GPIO / programming pin PGED2 |
| 引脚 20 | RB4 — GPIO |
| 引脚 21 | RB5 — GPIO |
| 引脚 22 | RB6 — GPIO |
| 引脚 23 | RB7 — GPIO |
| 引脚 24 | VSS — Ground |
| 引脚 25 | RB8 — GPIO |
| 引脚 26 | RB9 — GPIO |
| 引脚 27 | RB10 — GPIO |
| 引脚 28 | RB11 — GPIO |
| 引脚 29 | RB12 — GPIO |
| 引脚 30 | RB13 — GPIO |
| 引脚 31 | RB14 — GPIO |
| 引脚 32 | RB15 — GPIO |
| 引脚 33 | VSS — Ground |
| 引脚 34 | VDD — Core/IO supply |
| 引脚 35 | RC1 — GPIO |
| 引脚 36 | RC2 — GPIO |
| 引脚 37 | RC3 — GPIO |
| 引脚 38 | RC4 — GPIO |
| 引脚 39 | VDD — Core/IO supply |
| 引脚 40 | OSC1 — Crystal oscillator input |
| 引脚 41 | OSC2 — Crystal oscillator output |
| 引脚 42 | VSS — Ground |
| 引脚 43 | RC12 — GPIO |
| 引脚 44 | RC13 — GPIO |
| 引脚 45 | RC14 — GPIO |
| 引脚 46 | RC15 — GPIO |
| 引脚 47 | VSS — Ground |
| 引脚 48 | RD0 — GPIO / PMP data |
| 引脚 49 | RD1 — GPIO / PMP data |
| 引脚 50 | RD2 — GPIO / PMP data |
| 引脚 51 | RD3 — GPIO / PMP data |
| 引脚 52 | RD4 — GPIO / PMP data |
| 引脚 53 | RD5 — GPIO / PMP data |
| 引脚 54 | RD6 — GPIO / PMP data |
| 引脚 55 | RD7 — GPIO / PMP data |
| 引脚 56 | VSS — Ground |
| 引脚 57 | VDD — Core/IO supply |
| 引脚 58 | RG6 — GPIO / Ethernet MDC |
| 引脚 59 | RG7 — GPIO / Ethernet MDIO |
| 引脚 60 | RG8 — GPIO / Ethernet CRS_DV |
| 引脚 61 | RG9 — GPIO / Ethernet RX0 |
| 引脚 62 | VSS — Ground |
| 引脚 63 | VDDETH — Ethernet PHY supply 3.0-3.6 V |
| 引脚 64 | RF0 — GPIO / USB VBUS detect |
典型应用
PIC32MX775F256HT-80V/PT 适用于 6 应用s: 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.
推荐
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.
推荐
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.
推荐
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.
推荐
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.
推荐
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.
推荐
推荐产品汇总
工程参考数据： PIC32MX775F256HT-80V/PT ——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 | 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) |
关键差异点
- Same chip with broader V-temp range and tape-and-reel packaging （对比 PIC32MX775F256HT-80I/PT)
- Same die as tray version with full V-temp grade （对比 PIC32MX775F256H-80V/PT)
- Larger memory in same package for buffer-heavy applications （对比 PIC32MX695F512H-80I/PT)
设计说明
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).
合规信息
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.
