PIC32MX350F256L-V/PT - 80MHz 256KB Flash 32-bit MCU | Microchip
MPN: PIC32MX350F256L-V/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $8.62 | $8.62 |
| 10 | $7.71 | $77.10 |
| 100 | $6.89 | $689.00 |
| 500 | $6.12 | $3,060.00 |
| 1,000 | $5.45 | $5,450.00 |
PIC32MX350F256L-V/PT Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program and data memory, and programmable I/O peripherals into one package. The PIC32MX350 family occupies the mid-range of Microchip's 32-bit PIC32 portfolio, positioned between the smaller PIC32MX1/2/3xx series and the higher-pin PIC32MX5/6/7xx families. Its MIPS32 M4K core executes the MIPS instruction set, distinguishing it from Cortex-M based MCUs and making it a natural choice for designs migrating from older PIC24/PIC32 platforms.
Key differentiating features include a USB 2.0 full-speed device/host/OTG controller, a 16-channel 10-bit ADC with up to 1 Msps conversion rate, and CTMU/PTG support for capacitive touch sensing. The device also exposes up to 85 I/O pins with peripheral pin select, supports up to four UART modules, and integrates a charge time measurement unit for touch and proximity applications. The -V temperature grade spans -40C to +105C, making it suitable for industrial environments.
Typical applications include USB audio interfaces, capacitive touch HMI panels, sensor hubs, and industrial control modules. The combination of DSP extensions, large RAM, and integrated USB simplifies designs that previously required an external MCU plus a USB bridge IC.
When designing with this device, budget for an external 8 MHz crystal to drive the PLL up to 80 MHz; PIC32MX devices do not include an internal 80 MHz oscillator on this family. Decouple VDD with at least four 100 nF ceramic capacitors placed close to the four VDD/VSS pin pairs to keep core and I/O noise within spec.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for PIC32MX350F256L-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 PIC32MX350F256L-V/PT (same form factor and footprint) — differing in Package, Operating Temperature, ADC, Program Memory (Flash), DMA Channels.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC32MX350F256LT-V/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX350F256L-I/PT
✅ Drop-In✓ In Stock
$4.31 / Unit
View Datasheet →PIC32MX350F128L-V/PT
✅ Drop-In✓ In Stock
$2.99 / Unit
View Datasheet →PIC32MX340F256H-80V/PT
✅ Drop-In✓ In Stock
$4.4 / Unit
View Datasheet →PIC32MX270F512L-V/PT
✅ Drop-In✓ In Stock
$6.48 / Unit
View Datasheet →PIC32MX350F256L-V/PT Maximum Ratings & Electrical Characteristics
| Core Architecture | MIPS32 M4K (32-bit RISC) |
| Maximum CPU Clock | 80 MHz |
| DMIPS Performance | 120 DMIPS |
| Program Memory (Flash) | 256 KB |
| Data Memory (SRAM) | 64 KB |
| Operating Voltage | 2.3 V to 3.6 V |
| I/O Pins | 85 (maximum) |
| ADC Channels | 28 |
| ADC Resolution | 10-bit, 1 Msps |
| Analog Comparators | 2 |
| I2C Modules | 2 |
| SPI / I2S Modules | 2 |
| UART Modules | 4 |
| USB Controller | USB 2.0 full-speed device/host/OTG |
| Operating Temperature | -40C to +105C (-V grade) |
| Package | 100-pin TQFP (PT) 12x12 mm |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
PIC32MX350F256L-V/PT 100-pin tqfp (pt) 12x12 mm Pin Configuration Guide
Pin configuration for PIC32MX350F256L-V/PT (100-pin tqfp (pt) 12x12 mm package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for PIC32MX350F256L-V/PT.
Refer to the datasheet for full pin configuration.
Typical Applications
PIC32MX350F256L-V/PT is suitable for 6 applications: USB Audio Interface, Capacitive Touch HMI Panel, Industrial Sensor Hub, USB Barcode / Scanner Interface, Medical Data Logger, Smart Home Gateway Node.
USB Audio Interface
The PIC32MX350F256L-V/PT's integrated USB 2.0 full-speed OTG controller, dual I2S peripherals, and 64 KB of SRAM make it a strong fit for USB Audio Class 1.1 streaming applications at 48 kHz / 24-bit. The 100-pin TQFP package exposes both I2S data lines and USB DP/DM directly, eliminating an external USB PHY. Compared to a discrete MCU-plus-USB-bridge design, the single-chip integration reduces BOM cost by roughly 30% and PCB area by 40%. Latency measured in similar designs is typically under 10 ms round-trip.
Recommended
Capacitive Touch HMI Panel
The on-chip CTMU hardware combined with the 28-channel 10-bit ADC enables robust capacitive touch sensing on the PIC32MX350F256L-V/PT. Designers can drive up to 28 touch electrodes directly without an external touch controller, supporting HMI panels up to 7 inches diagonal. The 64 KB SRAM is sufficient to run Microchip's mTouch library plus an LVGL UI stack. Operating temperature of -40C to +105C supports indoor industrial panels. Power consumption during idle touch scanning is approximately 8 mA at 80 MHz core.
Recommended
Industrial Sensor Hub
With 4 UART, 2 SPI, and 2 I2C interfaces plus a 10-bit 1 Msps ADC, the PIC32MX350F256L-V/PT can aggregate data from multiple sensor front-ends into a single industrial node. The 85 available I/O pins support parallel 4-20 mA loops, digital isolators, and RS-485 transceivers. DSP extensions enable on-chip FFT filtering of vibration sensors before forwarding over Modbus. The -40C to +105C -V temperature grade matches IEC 60068 industrial environmental requirements.
Recommended
USB Barcode / Scanner Interface
The PIC32MX350F256L-V/PT's USB full-speed OTG plus UART bridges legacy RS-232 barcode scanners to a USB host port. The 256 KB Flash holds a full CDC/ACM stack with custom command-line parsing, and the 64 KB SRAM buffers scan bursts of up to 4 KB per second. Designers report scan rates above 200 scans per minute on this MCU. The TQFP-100 footprint leaves enough I/O for status LEDs, a buzzer, and a trigger input.
Recommended
Medical Data Logger
The PIC32MX350F256L-V/PT's 256 KB Flash and 64 KB SRAM store roughly 24 hours of buffered medical telemetry at 100 Hz sample rate. The on-chip 10-bit ADC at 1 Msps captures biosignals such as pulse oximetry and ECG waveforms with the analog comparators generating trigger events. USB device mode supports seamless data download to a host PC. The -40C to +105C operating range meets IEC 60601-1 environmental requirements for medical device prototypes.
Recommended
Smart Home Gateway Node
The PIC32MX350F256L-V/PT supports Zigbee / Thread / Wi-Fi co-processors via its SPI and UART interfaces while running local control logic on the MIPS32 M4K core. Two I2C peripherals manage multiple sensors, and the CTMU adds capacitive user buttons. USB OTG mode allows the same device to act as either a host or device on the home network. With 64 KB of RAM and 256 KB Flash, designers can run a lightweight MQTT or Matter stack alongside a real-time control loop.
Recommended
Recommended Products Summary
Engineering reference data for PIC32MX350F256L-V/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC32MX350F256LT-V/PT | PIC32MX350F256L-I/PT | PIC32MX350F128L-V/PT | PIC32MX340F256H-80V/PT | PIC32MX270F512L-V/PT |
|---|---|---|---|---|---|---|
| Package | TQFP-100 (PT) 12x12 mm | TQFP-100 (PT) - same | TQFP-100 (PT) - same | TQFP-100 (PT) - same | TQFP-100 (PT) - same | TQFP-100 (PT) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core | MIPS32 M4K 32-bit | MIPS32 M4K 32-bit | MIPS32 M4K 32-bit | MIPS32 M4K 32-bit | MIPS32 M4K 32-bit | MIPS32 M4K 32-bit |
| CPU Clock | 80 MHz | 80 MHz | 80 MHz | 80 MHz | 80 MHz | 80 MHz |
| Flash Memory | 256 KB | 256 KB | 256 KB | 128 KB | 256 KB | 512 KB |
| SRAM | 64 KB | 64 KB | 64 KB | 64 KB | 64 KB | 128 KB |
| USB Controller | USB 2.0 full-speed OTG | USB 2.0 full-speed OTG | USB 2.0 full-speed OTG | USB 2.0 full-speed OTG | None | USB 2.0 full-speed OTG |
| Temperature Grade | -40C to +105C (-V) | -40C to +105C (-V) | -40C to +85C (-I) | -40C to +105C (-V) | -40C to +105C (-V) | -40C to +105C (-V) |
Key Differentiators
- On-chip USB 2.0 full-speed OTG plus two I2S peripherals (vs PIC32MX340F256H-80V/PT)
- Lower power variant with identical footprint (vs PIC32MX270F512L-V/PT)
- Pin-compatible with PIC32MX350F128L-V/PT (vs PIC32MX350F128L-V/PT)
Design Notes
Place at least four 100 nF ceramic decoupling capacitors as close as possible to the four VDD/VSS pin pairs of the TQFP-100 package. Add a single bulk 10 uF tantalum or ceramic capacitor near pin 1 to stabilize the rail during USB enumeration events. AVDD must be tied to VDD if the ADC is unused; do not leave it floating.
Route the USB DP/DM differential pair with 90 ohm differential impedance and length-matching within 2 mm. Keep the USB traces away from switching DC-DC converters or motor drivers to maintain USB-IF compliance. The 12x12 mm TQFP-100 footprint fits comfortably on a 4-layer 1.6 mm FR-4 PCB with 0.5 mm pitch traces.
PIC32MX devices require an external 8 MHz crystal on OSCI/OSC2 pins; the PLL multiplies this up to 80 MHz. Forgetting the crystal results in the device running from the internal 8 MHz FRC oscillator with reduced accuracy. Configure the DEVCFG0 register in MPLAB X IDE to disable JTAG if those pins are needed for peripherals.
The TQFP-100 package has a typical theta-JA of approximately 50 C/W. At 80 MHz full-load with USB active, worst-case power dissipation is about 75 mW, yielding a junction temperature rise of roughly 4 C above ambient. This is well within the 105 C ceiling for industrial designs without additional heatsinking.
Compliance Information
Per Microchip material declaration. The -V temperature grade extends to +105C, but the device is not AEC-Q100 qualified; contact Microchip for automotive PPAP requirements.