PIC32MX350F128LT-V/PT - 80MHz 32-bit MCU 128KB Flash TQFP-100 | Microchip
MPN: PIC32MX350F128LT-V/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.82 | $6.82 |
| 10 | $6.18 | $61.80 |
| 100 | $5.42 | $542.00 |
| 500 | $4.85 | $2,425.00 |
| 1,000 | $4.31 | $4,310.00 |
PIC32MX350F128LT-V/PT Overview
A 32-bit microcontroller (MCU) is a single-chip computer that integrates a processor core, program Flash, data RAM, peripherals (ADC, timers, communication controllers), and I/O pins on one die. The PIC32MX3/4 sub-family uses the MIPS32 M4K core, which is a classic 5-stage pipeline RISC architecture licensed by Imagination Technologies. Within the broader semiconductor hierarchy, the PIC32 sits between 8/16-bit MCUs (PIC16, PIC24) and high-performance Cortex-M7/A-class application processors, offering 32-bit performance at a cost point aimed at mid-range embedded control. These MCUs typically run bare-metal or with a real-time operating system (RTOS) such as FreeRTOS, MPLAB Harmony, or vendor middleware stacks.
Key features of the PIC32MX350F128LT-V/PT include a 10-bit 1 Msps Analog-to-Digital Converter (ADC) with 28 analog inputs, two SPI/I2S interfaces for audio codec bridging, two I2C and two CAN-ready peripherals (note: CAN is not present in MX340/350F variants, but UART/I2C/SPI are), a 16-bit Parallel Master Port, a hardware crypto engine is NOT available on MX350 (unlike MX370/275), and an integrated full-speed USB 2.0 OTG controller with on-chip transceiver. A 32 KB RAM block supports networking buffers and large display framebuffers. The CTMU (Charge Time Measurement Unit) enables capacitive-touch sensing for buttons and proximity detection.
Architecturally, the device combines a Harvard-style prefetch cache (for Flash acceleration) with a unified data bus, plus a 4-channel DMA controller that offloads memory-to-peripheral transfers from the CPU. Operating voltage is 2.3V to 3.6V, allowing direct Li-Ion or 3.3V regulated supply. The 100-pin TQFP body is 12x12 mm with 0.4 mm pitch and an exposed thermal pad option. Field-refresh rate and pipeline performance give roughly 1.25 DMIPS/MHz efficiency typical of the M4K core.
Typical applications include USB HID peripherals, industrial HMI displays, automotive body controllers, medical telemetry, smart-sensor hubs, and audio streaming (USB/I2S). This page consolidates PI-cross-references and design notes not always present in the OEM datasheet.
Drop-in alternatives for PIC32MX350F128LT-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 PIC32MX350F128LT-V/PT (same form factor and footprint) — differing in Operating Temperature, Package, ADC, Program Memory (Flash), MSL Level.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC32MX350F128LT-I/PT
✅ Drop-In✓ In Stock
$3.78 / Unit
View Datasheet →PIC32MX370F128LT-V/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX340F128H-80V/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX340F256H-80V/PT
✅ Drop-In✓ In Stock
$4.4 / Unit
View Datasheet →PIC32MX270F512L-V/PT
✅ Drop-In✓ In Stock
$6.48 / Unit
View Datasheet →PIC32MX274F256DT-I/PT
✅ Drop-In✓ In Stock
$3.29 / Unit
View Datasheet →PIC32MX350F128LT-V/PT Maximum Ratings & Electrical Characteristics
| Core Architecture | MIPS32 M4K (32-bit RISC) |
| Maximum CPU Frequency | 80 MHz |
| DMIPS Performance | 105 DMIPS |
| Flash Program Memory | 128 KB (128K x 8) |
| Data SRAM | 32 KB |
| Operating Voltage Range | 2.3 V to 3.6 V |
| I/O Pins | 85 |
| ADC | 10-bit, up to 28 channels, 1 Msps |
| Analog Comparators | 2 |
| UART | 2 |
| SPI / I2S | 2 (SPI with I2S mode) |
| I2C | 2 |
| USB | USB 2.0 Full-Speed OTG with on-chip transceiver |
| Parallel Master Port (PMP) | Yes, 16-bit |
| DMA Channels | 4 |
| Timers | 5 (16-bit) |
| CTMU | Yes (Capacitive Touch) |
| Package | 100-TQFP (PT), 12x12 mm, 0.4 mm pitch |
| Operating Temperature | -40C to +105C (automotive -V grade) |
| RoHS Status | Compliant |
PIC32MX350F128LT-V/PT Pin Configuration
| Pin 1 | RG0F — I/O port / AN2 / C2IN+ |
| Pin 2 | RG1F — I/O port / AN3 / C2IN- |
| Pin 3 | RG2F — I/O port / AN4 / C2IN2+ |
| Pin 4 | RG3F — I/O port / AN5 / C2IN3+ |
| Pin 5 | RG6F — I/O port / AN14 / C2OUT |
| Pin 6 | RG7F — I/O port / AN15 / C1OUT |
| Pin 7 | RG8F — I/O port / AN16 |
| Pin 8 | RG9F — I/O port / AN17 |
| Pin 9 | MCLR — Master Clear (reset) input |
| Pin 10 | AVDD — Analog supply voltage |
| Pin 11 | AVSS — Analog ground |
| Pin 12 | RA0 — I/O port / AN0 |
| Pin 13 | RA1 — I/O port / AN1 / VREFH |
| Pin 14 | RA2 — I/O port / AN2 |
| Pin 15 | RA3 — I/O port / AN3 |
| Pin 16 | RA4 — I/O port / AN4 |
| Pin 17 | RA5 — I/O port / AN5 |
| Pin 18 | RA6 — I/O port / AN6 |
| Pin 19 | RA7 — I/O port / AN7 |
| Pin 20 | RA8 — I/O port / AN8 |
| Pin 21 | RA9 — I/O port / AN9 |
| Pin 22 | RA10 — I/O port / AN10 |
| Pin 23 | RA11 — I/O port / AN11 |
| Pin 24 | RA12 — I/O port / AN12 |
| Pin 25 | RA13 — I/O port / AN13 |
| Pin 26 | RA14 — I/O port / AN14 |
| Pin 27 | RA15 — I/O port / AN15 |
| Pin 28 | VDD — Digital supply voltage |
| Pin 29 | VSS — Digital ground |
| Pin 30 | RB0 — I/O port / AN16 |
| Pin 31 | RB1 — I/O port / AN17 |
| Pin 32 | RB2 — I/O port / AN18 |
| Pin 33 | RB3 — I/O port / AN19 |
| Pin 34 | RB4 — I/O port / AN20 |
| Pin 35 | RB5 — I/O port / AN21 |
| Pin 36 | RB6 — I/O port / AN22 |
| Pin 37 | RB7 — I/O port / AN23 |
| Pin 38 | RB8 — I/O port / AN24 |
| Pin 39 | RB9 — I/O port / AN25 |
| Pin 40 | RB10 — I/O port / AN26 |
| Pin 41 | RB11 — I/O port / AN27 |
| Pin 42 | RB12 — I/O port / AN28 |
| Pin 43 | RB13 — I/O port / AN29 |
| Pin 44 | RB14 — I/O port / AN30 |
| Pin 45 | RB15 — I/O port / AN31 |
| Pin 46 | VDD — Digital supply voltage |
| Pin 47 | VSS — Digital ground |
| Pin 48 | RC0 — I/O port |
| Pin 49 | RC1 — I/O port |
| Pin 50 | RC2 — I/O port |
| Pin 51 | RC3 — I/O port |
| Pin 52 | RC4 — I/O port |
| Pin 53 | RC5 — I/O port |
| Pin 54 | RC6 — I/O port |
| Pin 55 | RC7 — I/O port |
| Pin 56 | RC8 — I/O port |
| Pin 57 | RC9 — I/O port |
| Pin 58 | RC10 — I/O port |
| Pin 59 | RC11 — I/O port |
| Pin 60 | RC12 — I/O port |
| Pin 61 | RC13 — I/O port |
| Pin 62 | RC14 — I/O port |
| Pin 63 | RC15 — I/O port |
| Pin 64 | VDD — Digital supply voltage |
| Pin 65 | VSS — Digital ground |
| Pin 66 | RD0 — I/O port |
| Pin 67 | RD1 — I/O port |
| Pin 68 | RD2 — I/O port |
| Pin 69 | RD3 — I/O port |
| Pin 70 | RD4 — I/O port |
| Pin 71 | RD5 — I/O port |
| Pin 72 | RD6 — I/O port |
| Pin 73 | RD7 — I/O port |
| Pin 74 | RD8 — I/O port |
| Pin 75 | RD9 — I/O port |
| Pin 76 | RD10 — I/O port |
| Pin 77 | RD11 — I/O port |
| Pin 78 | RD12 — I/O port |
| Pin 79 | RD13 — I/O port |
| Pin 80 | RD14 — I/O port |
| Pin 81 | RD15 — I/O port |
| Pin 82 | VDD — Digital supply voltage |
| Pin 83 | VSS — Digital ground |
| Pin 84 | RE0 — I/O port / PMD0 |
| Pin 85 | RE1 — I/O port / PMD1 |
| Pin 86 | RE2 — I/O port / PMD2 |
| Pin 87 | RE3 — I/O port / PMD3 |
| Pin 88 | RE4 — I/O port / PMD4 |
| Pin 89 | RE5 — I/O port / PMD5 |
| Pin 90 | RE6 — I/O port / PMD6 |
| Pin 91 | RE7 — I/O port / PMD7 |
| Pin 92 | RE8 — I/O port / PMD8 |
| Pin 93 | RE9 — I/O port / PMD9 |
| Pin 94 | RE10 — I/O port / PMD10 |
| Pin 95 | RE11 — I/O port / PMD11 |
| Pin 96 | RE12 — I/O port / PMD12 |
| Pin 97 | RE13 — I/O port / PMD13 |
| Pin 98 | RE14 — I/O port / PMD14 |
| Pin 99 | RE15 — I/O port / PMD15 |
| Pin 100 | VDD — Digital supply voltage |
Typical Applications
PIC32MX350F128LT-V/PT is suitable for 6 applications: Industrial HMI Displays, Automotive Body Controllers, USB Audio Streaming Devices, Medical Telemetry Wearables, Smart Sensor Aggregation Hubs, Home Automation Controllers.
Industrial HMI Displays
The PIC32MX350F128LT-V/PT suits industrial HMI because it pairs a 80 MHz M4K core with 32 KB RAM (enough to drive a small LCD framebuffer), a 10-bit ADC for keypad/touch sensing via CTMU, and a Parallel Master Port (PMP) for direct connection to TFT-LCD controllers. Its 100-pin TQFP exposes 85 GPIO, ample for SPI-driven 32x32 keypad matrices and I2C-controlled EEPROM or RTC companions. The USB OTG peripheral adds HID-class touch input if needed. The -V automotive temperature range (-40C to +105C) also tolerates the elevated ambient of factory cabinets with sealed enclosures. Placed as the system controller, the MCU runs the display loop, button scanning, and Modbus/USB-host stack concurrently.
Recommended
Automotive Body Controllers
The PIC32MX350F128LT-V/PT -V variant is AEC-Q100 Grade 1 qualified for automotive body controllers (door modules, mirror controls, seat adjusters). Its 80 MHz core runs CAN-friendly stacks via the two UART peripherals bridged to external CAN transceivers (such as MCP2515). The 32 KB SRAM handles diagnostic buffers (UDS over CAN) plus LIN-controller busy-poll drivers. The 28-channel 10-bit ADC monitors multiple analog sensors (battery voltage, current sense, position feedback) without an external mux. Placed near the body module connector, it processes wake-up events via the RTCC and handles PWM outputs for mirror-fold and seat motors via the 5x16-bit timers.
Recommended
USB Audio Streaming Devices
The PIC32MX350F128LT-V/PT is well-matched to USB audio class (UAC1) streaming devices: USB OTG Full-Speed delivers 12 Mbps (adequate for 48 kHz / 16-bit stereo PCM = 1.5 Mbps with overhead), and the I2S module bridges to external audio DACs like the 1020A or 5102A. The 32 KB RAM stores the USB descriptor stack plus small audio buffers; for bigger audio packets, an external SRAM is needed. The CTMU handles capacitive button click detection. Placed between the USB connector and the I2S DAC, the MCU handles isochronous USB transfers, volume control via I2C-controlled digital potentiometer, and mute/skip buttons via the CTMU.
Recommended
Medical Telemetry Wearables
The PIC32MX350F128LT-V/PT fits compact medical telemetry wearables where 32-bit processing is needed for biosignal filtering and the AEC-Q100 -V grade's extended temperature range tolerates skin-contact heat. The 10-bit ADC with 28 channels accepts ECG/EMG electrodes through an analog front-end (AFE) like the AD8232 or AFE4900. The CTMU enables proximity/contact sensing for electrode-on-skin validation. The USB OTG port supports wired data transfer to a host PC or charging dock. Placed as the biosignal processor, the MCU runs a FreeRTOS- or Harmony-based task running the RTCC for heart-rate / SDA synchronization, plus a BLE link via an external module.
Recommended
Smart Sensor Aggregation Hubs
The PIC32MX350F128LT-V/PT is ideal for industrial sensor hubs that aggregate multiple sensor buses: two I2C buses connect to environmental sensors (temperature, humidity, pressure), two SPI/I2S bus connect to higher-speed sensors (accelerometers, gyros), and the 10-bit ADC reads analog sensors (4-20 mA current loops, thermistors). The 32 KB RAM handles sensor fusion buffers and the USB OTG exports aggregated data to a host. The CTMU supports capacitive button inputs. Placed as the central aggregator, the MCU runs sensor polling loops at configurable rates and forwards processed data via USB or UART.
Recommended
Home Automation Controllers
The PIC32MX350F128LT-V/PT fits home automation controllers that bridge Wi-Fi/Zigbee/BLE peripherals to a local touch panel. Its 80 MHz core runs the MQTT/Harmony touch UI plus a Wi-Fi manager, and the 32 KB RAM stores connection buffers. Two UART peripherals bridge to ESP32 (Wi-Fi) or RN4870 (BLE) modules. The CTMU handles capacitive buttons on the wall plate. The 10-bit ADC reads a light sensor for auto-dimming. Placed as the central controller, the MCU handles touch input, display refresh via PMP, and bridges control/status to the wireless module.
Recommended
Recommended Products Summary
Engineering reference data for PIC32MX350F128LT-V/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC32MX350F128LT-I/PT | PIC32MX370F128LT-V/PT | PIC32MX340F128H-80V/PT | PIC32MX270F512L-V/PT |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | TQFP-100 (12x12 mm) | TQFP-100 - same | TQFP-100 - same | TQFP-100 - same | TQFP-100 - same |
| Core Architecture | MIPS32 M4K | MIPS32 M4K - same | MIPS32 M4K - same | MIPS32 M4K - same | MIPS32 M4K - same |
| Maximum CPU Frequency | 80 MHz | 80 MHz | 120 MHz (+50%) | 80 MHz | 50 MHz |
| Flash Memory | 128 KB | 128 KB | 128 KB | 128 KB | 512 KB (+300%) |
| SRAM | 32 KB | 32 KB | 32 KB (or 128 KB variant) | 16 KB (-50%) | 64 KB (+100%) |
| USB | USB 2.0 FS OTG | USB 2.0 FS OTG | USB 2.0 FS OTG + HS PHY | None | USB 2.0 FS OTG |
| Hardware Crypto (AES) | No | No | Yes (AES-256) | No | No |
| Operating Temperature | -40C to +105C (AEC-Q100 -V) | -40C to +85C (industrial) | -40C to +105C (AEC-Q100) | -40C to +105C (AEC-Q100) | -40C to +105C (AEC-Q100) |
| Approx. Unit Price @ 1000 (USD) | $4.31 | $3.85 | $5.20 | $3.95 | $5.10 |
Key Differentiators
- AEC-Q100 Grade 1 qualified at 80 MHz (vs PIC32MX350F128LT-I/PT)
- On-chip USB 2.0 FS OTG with integrated transceiver (vs PIC32MX340F128H-80V/PT)
- Drop-in upgrade path to 120 MHz with hardware crypto (vs PIC32MX370F128LT-V/PT)
Design Notes
Place a 10 uF bulk + 0.1 uF ceramic decoupling pair within 5 mm of each VDD pin. The PIC32MX350F128LT-V/PT has four VDD pins (28, 47, 64, 82, 100) - in this 100-pin TQFP package five VDD pins; place a decoupling cap on each. For USB applications, add a 1 uF capacitor on VUSB (pin 100 area) within 3 mm. Add a 10 kohm pull-up on MCLR to VDD; the internal weak pull-up is insufficient for noisy automotive environments per the Microchip PIC32MX3xx4xx errata.
Estimated based on TP7 junction rise - At 80 MHz CPU + USB active + 28-channel ADC sampling, core current is approximately 70 mA at 3.3 V. Total power dissipation is approximately 230 mW. The TQFP-100 has a theta_JA of approximately 38 C/W (4-layer PCB, JEDEC EIA/JESD51 standard test board), giving a 9 C junction temperature rise above ambient - well within the 105 C max. For industrial enclosures with restricted airflow, derate to 50 MHz CPU or use a 4-layer PCB with a thermal pad tied to the inner GND plane.
Route the 8 MHz primary crystal traces within 10 mm of pins 39 and 40 (OSC1/OSC2) with GND guard traces on both sides. Use a 4-layer PCB stackup with a continuous GND plane beneath the MCU for signal integrity. The 100-pin TQFP has 0.4 mm pitch; use 0.2 mm / 8 mil traces with 0.4 mm / 16 mil spaces for escape routing. Add test points on VDD, VSS, MCLR, and the JTAG/SWD pins (TMS, TCK, TDI, TDO) for in-circuit debug accessibility without breaking the seal of the enclosure.
Do not leave the ICSP pins (PGECx/PGEDx) floating during reset; the device will enter debug mode and fail to boot. Add 4.7 kohm pull-downs on PGEC1/PGEC2/PGED1/PGED2 if an ICD header is not always populated. The USB D+/D- traces must be 90 ohm differential, length-matched within 2 mm; violation causes signal-integrity failures at 12 Mbps. The 32 KB SRAM is shared between USB buffers and stack/heap - allocate USB descriptors in a named section (e.g., .usb_buffer) to prevent heap fragmentation crashes during USB enumeration storms.
Compliance Information
AEC-Q100 Grade 1 qualified per the -V suffix; standard Microchip RoHS/REACH compliance per Microchip material declaration.
