PIC32MX350F256HT-V/PT - 80MHz 32-bit MCU 256KB Flash | Microchip
MPN: PIC32MX350F256HT-V/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 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 Overview
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.
Drop-in alternatives for PIC32MX350F256HT-V/PT — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with PIC32MX350F256HT-V/PT (same form factor and footprint) — differing in Package, ADC, Operating Temperature, Program Memory (Flash), SRAM.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC32MX350F256H-V/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX350F256HT-I/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX350F128HT-V/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX270F256H-V/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX340F256H-80V/PT
✅ Drop-In✓ In Stock
$4.4 / Unit
View Datasheet →PIC32MX350F256HT-V/PT Maximum Ratings & Electrical Characteristics
| 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 |
| Package | 64-pin TQFP (10x10 mm) |
| Mounting Type | Surface Mount |
| Operating Temperature Range | -40C to +105C |
| Automotive Qualification | AEC-Q100 |
| RoHS Status | Compliant |
PIC32MX350F256HT-V/PT Pin Configuration
| Pin 1 | SDA2/RA0 — I2C2 data / GPIO |
| Pin 2 | SCL2/RA1 — I2C2 clock / GPIO |
| Pin 3 | RA2 — GPIO |
| Pin 4 | RA3 — GPIO |
| Pin 5 | RA4 — GPIO |
| Pin 6 | RA5 — GPIO |
| Pin 7 | RA6 — GPIO |
| Pin 8 | RA7 — GPIO |
| Pin 9 | RB0 — GPIO / CN interrupt |
| Pin 10 | RB1 — GPIO / CN interrupt |
| Pin 11 | RB2 — GPIO / CN interrupt |
| Pin 12 | RB3 — GPIO / CN interrupt |
| Pin 13 | RB4 — GPIO / CN interrupt |
| Pin 14 | RB5 — GPIO / CN interrupt |
| Pin 15 | RB6 — GPIO / CN interrupt |
| Pin 16 | RB7 — GPIO / CN interrupt |
| Pin 17 | RB8 — GPIO / CN interrupt |
| Pin 18 | RB9 — GPIO / CN interrupt |
| Pin 19 | VSS — Ground reference |
| Pin 20 | VDD — Positive power supply (2.3V-3.6V) |
| Pin 21 | RB10 — GPIO / CN interrupt |
| Pin 22 | RB11 — GPIO / CN interrupt |
| Pin 23 | RB12 — GPIO / CN interrupt |
| Pin 24 | RB13 — GPIO / CN interrupt |
| Pin 25 | RB14 — GPIO / CN interrupt |
| Pin 26 | RB15 — GPIO / CN interrupt |
| Pin 27 | RC0 — GPIO |
| Pin 28 | RC1 — GPIO |
| Pin 29 | RC2 — GPIO |
| Pin 30 | RC3 — GPIO |
| Pin 31 | RC4 — GPIO |
| Pin 32 | RC5 — GPIO |
| Pin 33 | VSS — Ground reference |
| Pin 34 | VDD — Positive power supply (2.3V-3.6V) |
| Pin 35 | RC6 — GPIO |
| Pin 36 | RC7 — GPIO |
| Pin 37 | RC8 — GPIO |
| Pin 38 | RC9 — GPIO |
| Pin 39 | RD0 — GPIO / PMP data |
| Pin 40 | RD1 — GPIO / PMP data |
| Pin 41 | RD2 — GPIO / PMP data |
| Pin 42 | RD3 — GPIO / PMP data |
| Pin 43 | RD4 — GPIO / PMP data |
| Pin 44 | RD5 — GPIO / PMP data |
| Pin 45 | RD6 — GPIO / PMP data |
| Pin 46 | RD7 — GPIO / PMP data |
| Pin 47 | VSS — Ground reference |
| Pin 48 | VDD — Positive power supply (2.3V-3.6V) |
| Pin 49 | RE0 — GPIO / PMALL |
| Pin 50 | RE1 — GPIO / PMALH |
| Pin 51 | RE2 — GPIO |
| Pin 52 | RE3 — GPIO |
| Pin 53 | RE4 — GPIO |
| Pin 54 | RE5 — GPIO |
| Pin 55 | RE6 — GPIO |
| Pin 56 | RE7 — GPIO |
| Pin 57 | RF0 — GPIO / C1OUT |
| Pin 58 | RF1 — GPIO / C2OUT |
| Pin 59 | RF2 — GPIO / SDA3 |
| Pin 60 | RF3 — GPIO / SCL3 |
| Pin 61 | RF4 — GPIO / USBID |
| Pin 62 | RF5 — GPIO / VBUSON |
| Pin 63 | VUSB — USB internal transceiver power |
| Pin 64 | RG0 — GPIO |
Typical Applications
PIC32MX350F256HT-V/PT is suitable for 6 applications: 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.
Recommended
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.
Recommended
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.
Recommended
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.
Recommended
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.
Recommended
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.
Recommended
Recommended Products Summary
Engineering reference data for PIC32MX350F256HT-V/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | 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 |
Key Differentiators
- AEC-Q100 automotive qualification with V temperature suffix (vs PIC32MX350F256HT-I/PT)
- USB 2.0 full-speed OTG with on-chip transceiver (vs PIC32MX340F256H-80V/PT)
- Double SRAM compared to older PIC32MX2 and PIC32MX3 variants (vs PIC32MX270F256H-V/PT)
Design Notes
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.
Compliance Information
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.
