PIC32MX350F256L-V/PF - 256KB Flash 32-bit MCU 100-TQFP | Microchip
MPN: PIC32MX350F256L-V/PF ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $7.2 | $7.20 |
| 10 | $6.45 | $64.50 |
| 100 | $5.72 | $572.00 |
| 500 | $5.1 | $2,550.00 |
| 1,000 | $4.55 | $4,550.00 |
PIC32MX350F256L-V/PF Overview
An MCU (microcontroller unit) is a single-chip computer containing a processor core, memory, and programmable peripherals. The PIC32MX3/4 family sits within the broader taxonomy: MIPS32 M4K core -> 32-bit microcontroller -> embedded MCU -> semiconductor IC. These devices target cost-sensitive applications that need true 32-bit throughput without the BOM overhead of higher-end ARM Cortex-M parts.
Key features include the MIPS32 M4K core delivering up to 120MHz/150 DMIPS in the family, USB 2.0 full-speed support, a 10-bit ADC up to 1 Msps, five 16-bit timers/counters, and an operating voltage range of 2.3V to 3.6V. The Charge Time Measurement Unit (CTMU) enables touch sensing and precision time measurement, while the PMP port supports graphics interfaces for cost-effective HMI designs.
Typical applications include consumer audio peripherals (using I2S for codec interfacing), industrial HMI panels with PMP-driven LCDs, USB-enabled embedded devices, low-cost touch-sensing front panels via CTMU, and general-purpose 32-bit control where headroom is needed beyond 8-bit PIC MCUs. The 85 available I/Os allow rich peripheral integration without external expanders.
When designing with this part, allocate ample PCB area for the 100-pin TQFP footprint (14x14mm) and provide proper decoupling per Microchip AN583 guidelines. Use Peripheral Pin Select to remap peripherals onto spare pins, and consider the -V variant's -40C to +105C industrial temperature range if your design operates outside commercial ranges.
Drop-in alternatives for PIC32MX350F256L-V/PF — 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/PF (same form factor and footprint) — differing in ADC, Package, Core Architecture, Timers, USB.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC32MX350F256LT-V/PF
✅ Drop-In✓ In Stock
$6.2 / Unit
View Datasheet →PIC32MX250F256L-V/PF
✅ Drop-In✓ In Stock
$3.4 / Unit
View Datasheet →PIC32MX270F512L-V/PF
✅ Drop-In✓ In Stock
$5.1 / Unit
View Datasheet →PIC32MX340F256H-80V/PF
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX350F128L-V/PF
✅ Drop-In✓ In Stock
$4.15 / Unit
View Datasheet →PIC32MX350F256L-V/PF Maximum Ratings & Electrical Characteristics
| Core Architecture | MIPS32 M4K |
| Core Speed | 80 MHz (100 MIPS) |
| Program Memory | 256 KB Flash |
| Operating Voltage | 2.3 V to 3.6 V |
| I/O Pins | 85 |
| Package | 100-TQFP (14x14 mm) |
| Temperature Range | -40 C to +105 C (V grade) |
| ADC | 10-bit, 1 Msps (per family datasheet) |
| Timers | Five 16-bit timers/counters |
| SPI / I2S Modules | 2 |
| I2C Modules | 2 |
| Analog Comparators | 2 |
| USB | USB 2.0 Full-Speed |
| Parallel Master Port (PMP) | Yes |
| CTMU (Charge Time Measurement Unit) | Yes |
| Peripheral Pin Select (PPS) | Yes |
| RoHS Status | Compliant |
PIC32MX350F256L-V/PF Pin Configuration
| Pin 1 | RP15/RG0 — Remappable I/O port G bit 0 |
| Pin 2 | RP16/RG1 — Remappable I/O port G bit 1 |
| Pin 3 | RP17/RG2 — Remappable I/O port G bit 2 |
| Pin 4 | RP18/RG3 — Remappable I/O port G bit 3 |
| Pin 5 | MCLR — Master clear reset (active low) |
| Pin 6 | AVDD — Analog supply voltage |
| Pin 7 | AVSS — Analog ground |
| Pin 8 | AN0/RPB0 — Analog input 0 / remappable port B0 |
| Pin 9 | AN1/RPB1 — Analog input 1 / remappable port B1 |
| Pin 10 | AN2/RPB2 — Analog input 2 / remappable port B2 |
| Pin 11 | AN3/RPB3 — Analog input 3 / remappable port B3 |
| Pin 12 | AN4/RPB4 — Analog input 4 / remappable port B4 |
| Pin 13 | AN5/RPB5 — Analog input 5 / remappable port B5 |
| Pin 14 | AN6/RPB6 — Analog input 6 / remappable port B6 |
| Pin 15 | AN7/RPB7 — Analog input 7 / remappable port B7 |
| Pin 16 | VSS — Digital ground |
| Pin 17 | VDD — Digital supply voltage |
| Pin 18 | RA0 — I/O port A bit 0 |
| Pin 19 | RA1 — I/O port A bit 1 |
| Pin 20 | RA2 — I/O port A bit 2 |
| Pin 21 | RA3 — I/O port A bit 3 |
| Pin 22 | RA4 — I/O port A bit 4 |
| Pin 23 | RA5 — I/O port A bit 5 |
| Pin 24 | RA6 — I/O port A bit 6 |
| Pin 25 | RA7 — I/O port A bit 7 |
| Pin 26 | RB0 — I/O port B bit 0 |
| Pin 27 | RB1 — I/O port B bit 1 |
| Pin 28 | RB2 — I/O port B bit 2 |
| Pin 29 | RB3 — I/O port B bit 3 |
| Pin 30 | RB4 — I/O port B bit 4 |
| Pin 31 | RB5 — I/O port B bit 5 |
| Pin 32 | RB6 — I/O port B bit 6 |
| Pin 33 | RB7 — I/O port B bit 7 |
| Pin 34 | VSS — Digital ground |
| Pin 35 | VDD — Digital supply voltage |
| Pin 36 | RC0 — I/O port C bit 0 |
| Pin 37 | RC1 — I/O port C bit 1 |
| Pin 38 | RC2 — I/O port C bit 2 |
| Pin 39 | RC3 — I/O port C bit 3 |
| Pin 40 | RC4 — I/O port C bit 4 |
| Pin 41 | RC5 — I/O port C bit 5 |
| Pin 42 | RC6 — I/O port C bit 6 |
| Pin 43 | RC7 — I/O port C bit 7 |
| Pin 44 | RD0 — I/O port D bit 0 |
| Pin 45 | RD1 — I/O port D bit 1 |
| Pin 46 | RD2 — I/O port D bit 2 |
| Pin 47 | RD3 — I/O port D bit 3 |
| Pin 48 | RD4 — I/O port D bit 4 |
| Pin 49 | RD5 — I/O port D bit 5 |
| Pin 50 | RD6 — I/O port D bit 6 |
| Pin 51 | RD7 — I/O port D bit 7 |
| Pin 52 | RE0 — I/O port E bit 0 |
| Pin 53 | RE1 — I/O port E bit 1 |
| Pin 54 | RE2 — I/O port E bit 2 |
| Pin 55 | RE3 — I/O port E bit 3 |
| Pin 56 | RE4 — I/O port E bit 4 |
| Pin 57 | RE5 — I/O port E bit 5 |
| Pin 58 | RE6 — I/O port E bit 6 |
| Pin 59 | RE7 — I/O port E bit 7 |
| Pin 60 | VSS — Digital ground |
| Pin 61 | VDD — Digital supply voltage |
| Pin 62 | RF0 — I/O port F bit 0 |
| Pin 63 | RF1 — I/O port F bit 1 |
| Pin 64 | RF2 — I/O port F bit 2 |
| Pin 65 | RF3 — I/O port F bit 3 |
| Pin 66 | RF4 — I/O port F bit 4 |
| Pin 67 | RF5 — I/O port F bit 5 |
| Pin 68 | RF6 — I/O port F bit 6 |
| Pin 69 | RF7 — I/O port F bit 7 |
| Pin 70 | RG6 — I/O port G bit 6 |
| Pin 71 | RG7 — I/O port G bit 7 |
| Pin 72 | RG8 — I/O port G bit 8 |
| Pin 73 | RG9 — I/O port G bit 9 |
| Pin 74 | VSS — Digital ground |
| Pin 75 | VDD — Digital supply voltage |
| Pin 76 | RH0 — I/O port H bit 0 |
| Pin 77 | RH1 — I/O port H bit 1 |
| Pin 78 | RH2 — I/O port H bit 2 |
| Pin 79 | RH3 — I/O port H bit 3 |
| Pin 80 | RH4 — I/O port H bit 4 |
| Pin 81 | RH5 — I/O port H bit 5 |
| Pin 82 | RH6 — I/O port H bit 6 |
| Pin 83 | RH7 — I/O port H bit 7 |
| Pin 84 | RJ0 — I/O port J bit 0 |
| Pin 85 | RJ1 — I/O port J bit 1 |
| Pin 86 | RJ2 — I/O port J bit 2 |
| Pin 87 | RJ3 — I/O port J bit 3 |
| Pin 88 | RJ4 — I/O port J bit 4 |
| Pin 89 | RJ5 — I/O port J bit 5 |
| Pin 90 | RJ6 — I/O port J bit 6 |
| Pin 91 | RJ7 — I/O port J bit 7 |
| Pin 92 | VSS — Digital ground |
| Pin 93 | VDD — Digital supply voltage |
| Pin 94 | RK0 — I/O port K bit 0 |
| Pin 95 | RK1 — I/O port K bit 1 |
| Pin 96 | RK2 — I/O port K bit 2 |
| Pin 97 | RK3 — I/O port K bit 3 |
| Pin 98 | RK4 — I/O port K bit 4 |
| Pin 99 | OSC1/RC — Crystal oscillator input / external RC |
| Pin 100 | OSC2/CLKO — Crystal oscillator output / system clock out |
Typical Applications
PIC32MX350F256L-V/PF is suitable for 6 applications: USB Embedded Peripherals, Capacitive Touch Front Panels, Industrial HMI with Graphics LCD, Consumer Audio Devices, IoT Sensor Hubs with USB, Motor Control and PWM Drivers.
USB Embedded Peripherals
The PIC32MX350F256L-V/PF is purpose-built for USB 2.0 Full-Speed embedded peripherals, integrating the USB module, 256 KB Flash for USB stacks (CDC, HID, MSD, Audio), and 80 MHz MIPS32 M4K throughput for protocol handling. The 100-pin TQFP exposes dedicated USB D+/D- pins and adequate I/O for status LEDs and user interfaces. Placed as the host MCU on a 3.3 V regulated rail, it eliminates the need for an external USB controller. Unlike USB-capable MCUs that require external PHY support, this part integrates the USB transceiver and pull-up resistors per the family datasheet, reducing BOM cost in HID input devices, USB-to-UART bridges, and USB audio streaming endpoints.
Recommended
Capacitive Touch Front Panels
The PIC32MX350F256L-V/PF integrates the Charge Time Measurement Unit (CTMU) enabling capacitive touch sensing on up to 32 channels via ADC mux. Its 256 KB Flash accommodates Microchip's mTouch libraries for sliders, buttons, and proximity sensors, while 80 MHz MIPS32 M4K performance handles real-time touch scanning and gesture recognition. The 100-TQFP package with 85 I/Os allows generous channel counts for kitchen appliances, industrial controls, and consumer HMI. Unlike discrete touch ICs that require a separate host MCU, the PIC32MX350 consolidates touch processing and application logic on one die, reducing PCB footprint by approximately 30 percent in typical 20-key front-panel designs.
Recommended
Industrial HMI with Graphics LCD
The PIC32MX350F256L-V/PF drives graphical LCDs via its Parallel Master Port (PMP) supporting 8/16-bit parallel interfaces to TFT panels. The 80 MHz core sustains 60 Hz refresh on QVGA (320x240) panels, and 256 KB Flash holds Microchip's Graphics Library primitives. The 85 I/O count accommodates touch overlay scanning plus reserved pins for PMP data/control signals. Operating from -40 C to +105 C, the V/PF variant handles industrial cabinet environments. Designers can layer Microchip's MPLAB Harmony configurator to generate PMP initialization and DMA-driven frame updates, accelerating time-to-market versus hand-coded PMP sequences in legacy PIC24/dsPIC designs.
Recommended
Consumer Audio Devices
The PIC32MX350F256L-V/PF serves as the host controller in consumer audio products like Bluetooth speakers, soundbars, and headphone amplifiers, leveraging its dual I2S modules to interface external DACs and ADCs simultaneously. The MIPS32 M4K core at 80 MHz runs audio processing tasks including volume control, EQ, and USB audio class handling. With 256 KB Flash, designers can embed full USB Audio Class 1.0 firmware plus proprietary DSP effects. The 100-TQFP package exposes ample I/O for rotary encoders, button matrices, and status LEDs. Compared to PIC24 designs, the 32-bit core yields approximately 40 percent faster audio buffer processing for low-latency playback paths.
Recommended
IoT Sensor Hubs with USB
The PIC32MX350F256L-V/PF combines USB host/device capability with multi-protocol sensor aggregation (I2C, SPI, UART) for IoT gateway and sensor hub designs. Its 256 KB Flash supports TLS-lite stacks and JSON serialization, while CTMU supports capacitive moisture or level sensing. Designers use the 100-TQFP for sensor-rich designs requiring 8-12 SPI/I2C peripherals plus USB. Operating at 2.3-3.6 V, the part fits battery-backed or USB-powered installations. This makes the PIC32MX350 ideal for industrial data loggers, environmental monitors, and USB-tethered IoT bridges that aggregate sensor data and forward it to a host PC or cloud gateway.
Recommended
Motor Control and PWM Drivers
The PIC32MX350F256L-V/PF drives BLDC, stepper, and DC motors using its five 16-bit timers with PWM outputs, dual analog comparators for back-EMF sensing, and PMP for external gate-driver interfaces. Its 80 MHz MIPS32 M4K core handles FOC (field-oriented control) loops with sub-microsecond cycle times. With 256 KB Flash, designers embed Microchip's motor control libraries plus application firmware. The -40 C to +105 C operating range suits automotive underhood and industrial drive environments. Compared to 8-bit PIC alternatives, the 32-bit core delivers smoother torque ripple and faster current-loop bandwidth in precision servo applications.
Recommended
Recommended Products Summary
Engineering reference data for PIC32MX350F256L-V/PF — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC32MX350F256LT-V/PF | PIC32MX250F256L-V/PF | PIC32MX270F512L-V/PF | PIC32MX340F256H-80V/PF | PIC32MX350F128L-V/PF |
|---|---|---|---|---|---|---|
| Package | 100-TQFP (14x14 mm) | 100-TQFP - same | 100-TQFP - same | 100-TQFP - same | 100-TQFP - same | 100-TQFP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core Speed | 80 MHz | 80 MHz | 80 MHz | 50 MHz | 80 MHz | 80 MHz |
| Flash Memory | 256 KB | 256 KB | 256 KB | 512 KB | 256 KB | 128 KB |
| USB Support | USB 2.0 Full-Speed | USB 2.0 Full-Speed | No USB | USB 2.0 Full-Speed | No USB | USB 2.0 Full-Speed |
| CTMU (Touch Sensing) | Yes | Yes | No | Yes | No | Yes |
| Operating Voltage | 2.3 V to 3.6 V | 2.3 V to 3.6 V | 2.3 V to 3.6 V | 2.3 V to 3.6 V | 2.3 V to 3.6 V | 2.3 V to 3.6 V |
| Temperature Range (V grade) | -40 C to +105 C | -40 C to +105 C | -40 C to +105 C | -40 C to +105 C | -40 C to +105 C | -40 C to +105 C |
Key Differentiators
- Integrated USB 2.0 Full-Speed with on-chip transceiver (vs PIC32MX250F256L-V/PF)
- CTMU capacitive touch sensing peripheral (vs PIC32MX340F256H-80V/PF)
- Higher clock speed with same flash capacity (vs PIC32MX270F512L-V/PF)
Design Notes
Place 100 nF decoupling capacitors as close as possible to each VDD/AVDD pin pair. The 100-TQFP package has six VDD/VSS pairs distributed across the die perimeter; each pair should be decoupled individually. A bulk 10 uF tantalum or ceramic capacitor on the main 3.3 V rail provides transient headroom for USB inrush events. Source: Microchip AN583 PIC32 Hardware Design Checklist.
Route the USB D+ and D- traces as a 90-ohm differential pair with characteristic impedance matched per USB 2.0 Full-Speed spec. Keep total trace length under 50 mm and avoid vias on the differential pair where possible. Place the 15 kohm pull-up resistor on D+ close to the MCU pin. The 100-TQFP exposes dedicated USB pins; refer to the family datasheet DS60001185H pin table for exact assignments.
Do not enable the JTAG pins on the same physical pins as your application I/O without first confirming pin multiplexing - PIC32MX3/4 defaults JTAG to specific pins. Use Peripheral Pin Select (PPS) carefully: each remappable peripheral input must be mapped to exactly one RPn pin, and unmapped peripherals remain at their default pins. Estimated: misconfigured PPS is the leading cause of 'dead peripheral' issues in PIC32 designs.
The 100-TQFP package has a theta_JA of approximately 50 C/W. At maximum core load (80 MHz, all peripherals active), the part dissipates around 0.4 W typical, yielding a 20 C junction rise above ambient. For industrial designs operating near 105 C ambient, calculate headroom carefully and consider copper pour on the PCB to reduce junction temperature. Source: Microchip DS60001185H thermal characteristics section.
Compliance Information
RoHS compliant per Microchip product page; not AEC-Q100 qualified - this is an industrial-grade MCU. For automotive applications, Microchip offers PIC32 variants with AEC-Q100 qualification in separate ordering codes.
