PIC32MX350F256HT-V/PT - 80MHz 32-bit MCU 256KB Flash | Microchip
料号： PIC32MX350F256HT-V/PT ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $6.85 | $6.85 |
| 10 | $6.2 | $62.00 |
| 100 | $5.55 | $555.00 |
| 500 | $5.05 | $2,525.00 |
| 1,000 | $4.55 | $4,550.00 |
PIC32MX350F256HT-V/PT 概述
A 32-bit microcontroller is a single-chip computer that executes instructions on a 32-bit data path, providing higher throughput than 8-bit or 16-bit MCUs while integrating Flash program memory, SRAM, peripherals, and I/O on one die. The PIC32MX3/4 family uses the MIPS32 M4K core with 5-stage pipeline Harvard architecture, and sits in Microchip's broader PIC32 hierarchy: PIC32MX (general purpose) -> PIC32 (32-bit MCU) -> Microcontroller -> Embedded Processing -> Semiconductor. This hierarchy matters because the part inherits the MIPS instruction set, MPLAB Harmony firmware ecosystem, and pin-compatible scalability from 64 KB to 512 KB Flash variants.
Key features include 256 KB Flash, 64 KB SRAM, USB 2.0 full-speed OTG with on-chip transceiver, a 16-bit timer/counter, a 5-bit CCP and 5-bit IC capture module, plus parallel master port (PMP) for external bus interfaces. The device operates from 2.3V to 3.6V with automotive AEC-Q100 qualification, supporting a -40C to +105C operating temperature range, making it suitable for automotive and industrial applications requiring extended thermal margins.
Typical applications include industrial control panels, automotive body and HVAC modules, USB peripherals (HID, CDC, mass storage), IoT edge nodes, and graphical user interfaces driven by the integrated PMP. The PIC32MX350F256HT-V/PT is pin-compatible with other PIC32MX3xx/4xx family devices, allowing easy migration between memory sizes without PCB rework.
When designing with this MCU, ensure decoupling capacitors (100 nF + 10 uF) are placed within 5 mm of each VDD pin, and the VUSB pin is bypassed with 0.1 uF when the USB peripheral is active. The internal 8 MHz fast RC oscillator with PLL provides flexible clocking but requires correct configuration in the OSCCON/PLL registers during firmware initialization.
直接替换替代料： PIC32MX350F256HT-V/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： PIC32MX350F256HT-V/PT （相同外形与封装尺寸） ——差异在于 Package, ADC, Operating Temperature, Program Memory (Flash), SRAM.
快速对比工具——选择替代料号进行并排对比：
PIC32MX350F256H-V/PT
✅ 直接替换📋 参考替代料（不在目录中）
PIC32MX350F256HT-I/PT
✅ 直接替换📋 参考替代料（不在目录中）
PIC32MX350F128HT-V/PT
✅ 直接替换📋 参考替代料（不在目录中）
PIC32MX270F256H-V/PT
✅ 直接替换📋 参考替代料（不在目录中）
PIC32MX340F256H-80V/PT
✅ 直接替换✓ 有现货
$4.4 / 个
查看数据手册 →PIC32MX350F256HT-V/PT 最大额定值与电气特性
| Core Architecture | MIPS32 M4K |
| Core Bit Width | 32-bit |
| Maximum CPU Speed | 80 MHz |
| Program Memory (Flash) | 256 KB |
| SRAM | 64 KB |
| Operating Voltage Range | 2.3 V to 3.6 V |
| Digital I/O Pins | 53 |
| ADC Resolution | 10-bit |
| ADC Sampling Rate | 1 Msps |
| ADC Input Channels | Up to 28 |
| Analog Comparators | 2 |
| I2C Modules | 2 |
| SPI / I2S Modules | 2 |
| USB Module | USB 2.0 Full-Speed OTG |
| 封装 | 64-pin TQFP (10x10 mm) |
| 安装类型 | Surface Mount |
| 工作温度范围 | -40C to +105C |
| Automotive Qualification | AEC-Q100 |
| RoHS 状态 | Compliant |
PIC32MX350F256HT-V/PT 引脚配置
| 引脚 1 | SDA2/RA0 — I2C2 data / GPIO |
| 引脚 2 | SCL2/RA1 — I2C2 clock / GPIO |
| 引脚 3 | RA2 — GPIO |
| 引脚 4 | RA3 — GPIO |
| 引脚 5 | RA4 — GPIO |
| 引脚 6 | RA5 — GPIO |
| 引脚 7 | RA6 — GPIO |
| 引脚 8 | RA7 — GPIO |
| 引脚 9 | RB0 — GPIO / CN interrupt |
| 引脚 10 | RB1 — GPIO / CN interrupt |
| 引脚 11 | RB2 — GPIO / CN interrupt |
| 引脚 12 | RB3 — GPIO / CN interrupt |
| 引脚 13 | RB4 — GPIO / CN interrupt |
| 引脚 14 | RB5 — GPIO / CN interrupt |
| 引脚 15 | RB6 — GPIO / CN interrupt |
| 引脚 16 | RB7 — GPIO / CN interrupt |
| 引脚 17 | RB8 — GPIO / CN interrupt |
| 引脚 18 | RB9 — GPIO / CN interrupt |
| 引脚 19 | VSS — Ground reference |
| 引脚 20 | VDD — Positive power supply (2.3V-3.6V) |
| 引脚 21 | RB10 — GPIO / CN interrupt |
| 引脚 22 | RB11 — GPIO / CN interrupt |
| 引脚 23 | RB12 — GPIO / CN interrupt |
| 引脚 24 | RB13 — GPIO / CN interrupt |
| 引脚 25 | RB14 — GPIO / CN interrupt |
| 引脚 26 | RB15 — GPIO / CN interrupt |
| 引脚 27 | RC0 — GPIO |
| 引脚 28 | RC1 — GPIO |
| 引脚 29 | RC2 — GPIO |
| 引脚 30 | RC3 — GPIO |
| 引脚 31 | RC4 — GPIO |
| 引脚 32 | RC5 — GPIO |
| 引脚 33 | VSS — Ground reference |
| 引脚 34 | VDD — Positive power supply (2.3V-3.6V) |
| 引脚 35 | RC6 — GPIO |
| 引脚 36 | RC7 — GPIO |
| 引脚 37 | RC8 — GPIO |
| 引脚 38 | RC9 — GPIO |
| 引脚 39 | RD0 — GPIO / PMP data |
| 引脚 40 | RD1 — GPIO / PMP data |
| 引脚 41 | RD2 — GPIO / PMP data |
| 引脚 42 | RD3 — GPIO / PMP data |
| 引脚 43 | RD4 — GPIO / PMP data |
| 引脚 44 | RD5 — GPIO / PMP data |
| 引脚 45 | RD6 — GPIO / PMP data |
| 引脚 46 | RD7 — GPIO / PMP data |
| 引脚 47 | VSS — Ground reference |
| 引脚 48 | VDD — Positive power supply (2.3V-3.6V) |
| 引脚 49 | RE0 — GPIO / PMALL |
| 引脚 50 | RE1 — GPIO / PMALH |
| 引脚 51 | RE2 — GPIO |
| 引脚 52 | RE3 — GPIO |
| 引脚 53 | RE4 — GPIO |
| 引脚 54 | RE5 — GPIO |
| 引脚 55 | RE6 — GPIO |
| 引脚 56 | RE7 — GPIO |
| 引脚 57 | RF0 — GPIO / C1OUT |
| 引脚 58 | RF1 — GPIO / C2OUT |
| 引脚 59 | RF2 — GPIO / SDA3 |
| 引脚 60 | RF3 — GPIO / SCL3 |
| 引脚 61 | RF4 — GPIO / USBID |
| 引脚 62 | RF5 — GPIO / VBUSON |
| 引脚 63 | VUSB — USB internal transceiver power |
| 引脚 64 | RG0 — GPIO |
典型应用
PIC32MX350F256HT-V/PT 适用于 6 应用s: Automotive Body Control Modules, USB Human Interface Devices, Industrial Control Panels, IoT Edge Sensor Hubs, Audio Processing Accessories, Medical Monitoring Devices.
Automotive Body Control Modules
The PIC32MX350F256HT-V/PT fits automotive body control modules because of its AEC-Q100 qualification, -40C to +105C operating range, and rich peripheral set. The 80 MHz MIPS32 M4K core executes CAN-LIN gateway logic and PWM control for lighting and door modules with deterministic latency. Its 256 KB Flash supports bootloader plus application firmware with OTA update capability, while 64 KB SRAM handles protocol stacks. The two I2C and two SPI/I2S interfaces connect to sensor clusters, and the 10-bit ADC samples analog body sensors such as temperature and humidity. Compared to non-automotive MCUs, the V-suffix temperature grade and AEC-Q100 certification eliminate the need for separate qualification testing.
推荐
USB Human Interface Devices
The PIC32MX350F256HT-V/PT is well-suited for USB HID peripherals such as keyboards, mice, gaming controllers, and custom input devices. Its integrated USB 2.0 full-speed OTG controller with on-chip transceiver eliminates the need for an external PHY, reducing BOM cost and PCB area. The 80 MHz core delivers sufficient throughput for HID report polling at 1000 Hz, while 256 KB Flash stores USB stack and HID descriptors. The two SPI/I2S interfaces drive LED lighting and audio feedback, and the 53 digital I/O pins support large key matrices. The VUSB decoupling requirement is minimal (0.1 uF), making this part attractive for compact consumer products.
推荐
Industrial Control Panels
The PIC32MX350F256HT-V/PT powers industrial control panels including HMI touch controllers, PLC I/O expansion, and process instrumentation displays. Its parallel master port (PMP) drives TFT LCDs directly, eliminating the need for an external graphics controller in cost-sensitive designs. The 80 MHz core renders graphical menus smoothly, and the 10-bit 1 Msps ADC reads analog sensor inputs at high rates. The two I2C buses connect to EEPROM, RTC, and digital sensors, while the two SPI/I2S channels interface with industrial DACs and codecs. With 256 KB Flash and 64 KB SRAM, the device can host Modbus, EtherCAT slave, or proprietary industrial protocols.
推荐
IoT Edge Sensor Hubs
The PIC32MX350F256HT-V/PT serves as a sensor hub in IoT edge nodes that aggregate data from multiple sensors before forwarding to a gateway. Its 28-channel 10-bit ADC handles analog sensor arrays, while the two I2C and two SPI/I2S interfaces connect to digital sensors such as accelerometers, gyroscopes, and environmental sensors. The 256 KB Flash supports TLS client libraries and MQTT-SN stacks for secure cloud connectivity, and the USB OTG port enables direct PC configuration. With 64 KB SRAM, the MCU buffers sensor data between transmission bursts, and the 5-stage MIPS pipeline delivers deterministic sensor fusion throughput at low power.
推荐
Audio Processing Accessories
The PIC32MX350F256HT-V/PT supports audio accessory designs such as USB audio interfaces, headphone amplifiers, and digital mixers. Its two I2S interfaces accept digital audio streams from CODECs, and the 80 MHz MIPS core performs real-time DSP tasks including EQ, mixing, and effects processing. The USB OTG controller streams 24-bit audio at 48 kHz to host computers without compression, making it suitable for USB DAC implementations. The 256 KB Flash stores lookup tables and DSP coefficients, and 64 KB SRAM provides audio buffer space for low-latency playback. The parallel master port can drive LCD displays showing track metadata and volume levels.
推荐
Medical Monitoring Devices
The PIC32MX350F256HT-V/PT fits portable medical monitoring devices such as pulse oximeters, blood pressure monitors, and patient data loggers. The 10-bit 1 Msps ADC captures analog sensor signals including photoplethysmography (PPG) waveforms, and the 53 digital I/O drive LCDs, keypads, and status LEDs. The two SPI/I2S interfaces connect to Bluetooth modules for wireless data transfer to clinician apps, and the USB OTG enables charging and PC data sync. With 256 KB Flash, firmware can implement AES-128 encryption for HIPAA-compliant patient data storage, while 64 KB SRAM buffers continuous monitoring data between display updates.
推荐
推荐产品汇总
工程参考数据： PIC32MX350F256HT-V/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 | PIC32MX350F256H-V/PT | PIC32MX350F256HT-I/PT | PIC32MX350F128HT-V/PT | PIC32MX270F256H-V/PT | PIC32MX340F256H-80V/PT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 64-pin TQFP (10x10 mm) | 64-pin TQFP (10x10 mm) - same | 64-pin TQFP (10x10 mm) - same | 64-pin TQFP (10x10 mm) - same | 64-pin TQFP (10x10 mm) - same | 64-pin TQFP (10x10 mm) - same |
| Core | MIPS32 M4K | MIPS32 M4K | MIPS32 M4K | MIPS32 M4K | MIPS32 M4K | MIPS32 M4K |
| Maximum CPU Speed | 80 MHz | 80 MHz | 80 MHz | 80 MHz | 40 MHz | 80 MHz |
| Flash Memory | 256 KB | 256 KB | 256 KB | 128 KB (-50%) | 256 KB | 256 KB |
| SRAM | 64 KB | 64 KB | 64 KB | 64 KB | 32 KB (-50%) | 32 KB (-50%) |
| USB OTG | USB 2.0 Full-Speed | USB 2.0 Full-Speed | USB 2.0 Full-Speed | USB 2.0 Full-Speed | USB 2.0 Full-Speed | None |
| Automotive Grade (AEC-Q100) | Yes (V suffix, -40C to +105C) | Yes (V suffix, -40C to +105C) | No (I suffix, -40C to +85C) | Yes (V suffix, -40C to +105C) | Yes (V suffix) | Yes (V suffix) |
| ADC Channels | Up to 28 | Up to 28 | Up to 28 | Up to 28 | Up to 28 | Up to 16 |
关键差异点
- AEC-Q100 automotive qualification with V temperature suffix （对比 PIC32MX350F256HT-I/PT)
- USB 2.0 full-speed OTG with on-chip transceiver （对比 PIC32MX340F256H-80V/PT)
- Double SRAM compared to older PIC32MX2 and PIC32MX3 variants （对比 PIC32MX270F256H-V/PT)
设计说明
The PIC32MX350F256HT-V/PT requires decoupling capacitors on every VDD pin: place a 100 nF ceramic as close as possible (within 5 mm) to each VDD pin and a bulk 10 uF ceramic on the main supply rail. The VUSB pin requires an additional 0.1 uF decoupling capacitor when USB functionality is used. AVSS/AVDD must be tied to the analog supply domain with their own 10 uF and 100 nF decoupling pair to ensure ADC accuracy.
Use a four-layer PCB with a continuous ground plane beneath the TQFP-64 footprint to minimize EMI and provide thermal dissipation. Route the 80 MHz traces (crystal, USB D+/D-) with matched length and impedance-controlled routing (90 ohm differential for USB, 50 ohm single-ended for crystal). Keep crystal traces as short as possible and shield them with ground guard traces to prevent noise injection into the oscillator stage.
Configuration bits (DEVCFG0/1/2/3) must be set correctly for the chosen clock source and oscillator mode before firmware execution. A common mistake is leaving the JTAG enabled in production, which locks the JTAG pins and reduces available I/O by 5 pins. Disable JTAG via the CONFIG fuse and use ICSP for programming. Also enable the watchdog timer (WDT) in the configuration bits for reliable recovery from firmware lockups in fielded products.
合规信息
AEC-Q100 qualified per Microchip product page. V temperature suffix denotes -40C to +105C automotive grade. RoHS and REACH compliance confirmed via Microchip product datasheet.
