PIC32MX350F256LT-V/TL - 80MHz 256KB Flash 32-bit MCU | Microchip
MPN： PIC32MX350F256LT-V/TL ✓ 啟用中PIC32MX350F256LT-V/TL 概覽
A 32-bit microcontroller (MCU) is an integrated circuit combining a microprocessor core, program memory (Flash), data memory (SRAM), and configurable peripherals in a single chip. The PIC32MX3/4 family sits in Microchip's PIC32 hierarchy: PIC32MX -> 32-bit MCU -> MIPS M4K core -> microcontroller -> embedded processor -> semiconductor. Compared with 8-bit PIC16/AVR MCUs, the PIC32MX350 series adds parallel processing throughput, USB/device connectivity, and Peripheral Pin Select (PPS) remapping to free pin assignments from fixed peripheral mappings.
Key features of the PIC32MX350F256LT-V/TL include two I2S/SPI modules for codec and serial audio, two I2C channels, two UART/USART interfaces with IrDA and LIN support, a Parallel Master Port (PMP) for graphics or external memory, a 10-bit ADC with up to 28 analog input channels, two analog comparators, and a Charge Time Measurement Unit (CTMU) for capacitive touch or precise time-of-flight measurement. Five 16-bit timers/counters and a 5-channel DMA controller offload the core and accelerate throughput.
The architecture combines a single-cycle MIPS32 M4K pipeline with a tightly-coupled prefetch module and a separate bus for DMA traffic, producing deterministic interrupt latency. PPS remapping of digital I/O and a 124-pin VTLA pad-out expose enough GPIO for parallel buses, multiple SPI/I2S peripherals, and analog channels without external muxing. Hardware multipliers and a 32x16-bit divider accelerate DSP-oriented code such as audio filtering, PID control loops, and sensor fusion.
Typical applications include automotive body controllers, LIN/J1939 nodes, industrial HMI panels, USB device peripherals, audio playback and processing with external codecs, and graphics-enabled PMP interfaces. The wide operating voltage and 105C thermal rating also fit battery-management front-ends and metering subsystems.
When designing with this part, plan for an external 8MHz crystal and the PLL configuration to reach 80MHz system clock; add 0.1uF decoupling on every VDD/VSS pair and a bulk 10uF tantalum near the regulator. PPS mappings must be locked before enabling peripherals, otherwise peripherals stay on their default pins.
This page synthesizes distributor pricing, drop-in alternatives from the PIC32MX family, and design notes not found in the manufacturer datasheet alone.
直接替換替代品，適用於 PIC32MX350F256LT-V/TL — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： PIC32MX350F256LT-V/TL （相同外形與佔位） — 差異在於 Core Architecture, Package, Operating Temperature, Mounting Type, Program Memory (Flash).
PIC32MX350F256LT-I/TL
✅ 直接替換聯絡詢價
查看資料表 →PIC32MX370F256L-I/TL
✅ 直接替換📋 參考替代品（不在目錄中）
PIC32MX370F256L-V/TL
✅ 直接替換📋 參考替代品（不在目錄中）
PIC32MX450F256L-V/TL
✅ 直接替換📋 參考替代品（不在目錄中）
PIC32MX350F128LT-V/TL
✅ 直接替換聯絡詢價
查看資料表 →PIC32MX350F256LT-V/TL 最大額定值與電氣特性
| Core | MIPS32 M4K |
| Core Architecture | RISC 32-bit, single-core |
| Maximum CPU Clock | 80 MHz |
| DMIPS Performance | 100 (at 80 MHz) |
| Program Flash | 256 KB (256K x 8) |
| Auxiliary Flash | 12 KB |
| SRAM | 64 KB |
| Operating Voltage | 2.3 V to 3.6 V |
| 工作溫度 | -40 C to +105 C (automotive 'V' grade) |
| 封裝 | 124-pin VTLA (9x9 mm) with exposed pad |
| ADC | 10-bit, up to 28 channels |
| Analog Comparators | 2 |
| I2C | 2 |
| SPI / I2S | 2 SPI/I2S modules |
| UART/USART | 2 (with IrDA, LINbus) |
| PMP | Parallel Master Port |
| Timers | 5 x 16-bit |
| DMA Channels | 5 |
| CTMU | Charge Time Measurement Unit |
| PPS | Peripheral Pin Select |
| 安裝類型 | Surface Mount (Tape & Reel) |
| RoHS 狀態 | Compliant |
PIC32MX350F256LT-V/TL 124-pin vtla (9x9 mm) with exposed pad 腳位配置指南
PIC32MX350F256LT-V/TL（124-pin vtla (9x9 mm) with exposed pad 封裝）的腳位配置。 此數位 IC 包含 GPIO、通訊介面（UART、SPI、I2C）與電源腳位。替代腳位功能與配置選項請參閱製造商資料表。對嵌入式系統設計與 PCB 佈局至關重要。
無詳細腳位定義資料： PIC32MX350F256LT-V/TL.
請參閱 資料表 以查看完整腳位配置。
典型應用
PIC32MX350F256LT-V/TL 適用於 6 應用s: Automotive Body Control Module, Industrial HMI with Graphics Display, USB Device Peripheral (HID / CDC / MSD), Audio Processing with External Codec, Smart Sensor Hub / IoT Edge Node, Battery Management Front-End.
Automotive Body Control Module
The PIC32MX350F256LT-V/TL fits automotive body-control nodes with its -40C to +105C 'V' automotive temperature grade and 64KB SRAM for CAN/LIN message buffering. The two UART channels support LINbus at up to 20 kbaud for body-electronics slaves such as mirror controllers and seat modules, while the 10-bit ADC with up to 28 channels reads potentiometers and current-sense amplifiers. PIC PPS remapping frees the BCM pinout from rigid peripheral assignments, allowing engineers to route PWM outputs for LED drivers and motor H-bridges on any spare GPIO. Compared with smaller PIC16/AVR parts, the 32-bit MIPS M4K core handles OSEK/ AUTOSAR-style scheduling with headroom.
推薦
Industrial HMI with Graphics Display
The PIC32MX350F256LT-V/TL drives TFT LCDs via its Parallel Master Port (PMP) at up to 80MHz, supporting 8-bit or 16-bit 8080/6800 interfaces for QVGA/WQVGA panels. The 256KB Flash accommodates full-frame graphics assets and font tables while 64KB SRAM holds double-buffered frame data. Two SPI/I2S modules handle audio prompts and the two I2C channels connect to touch controllers and EEPROM. Compared with smaller PIC24/dsPIC parts, the 32-bit MIPS M4K core eliminates graphics tearing at 30+ FPS refresh rates typical for industrial HMI panels.
推薦
USB Device Peripheral (HID / CDC / MSD)
The PIC32MX350F256LT-V/TL integrates a full-speed USB 2.0 device controller with on-chip transceiver, supporting HID, CDC, and MSD device classes for HID-keyboards, CDC-serial bridges, and MSD-data-loggers without an external PHY. The 256KB Flash holds USB stacks such as Microchip MLA, and the 64KB SRAM handles HID report buffers or CDC line-coding state machines. PIC PPS remapping assigns D+/D- to package pins without sacrificing GPIO, simplifying PCB layout compared with rigid-pin PIC32MX1xx/2xx parts. The 80MHz/100 DMIPS core manages bulk transfers without dropping packets.
推薦
Audio Processing with External Codec
The PIC32MX350F256LT-V/TL streams 16/24-bit audio via its two I2S modules, supporting stereo sample rates up to 192 kHz when paired with an external codec such as the Microchip DSP or a third-party DAC. The 5-channel DMA controller moves audio buffers between the I2S peripheral and SRAM with zero CPU intervention, freeing MIPS for DSP filtering and mixing. The CTMU supports capacitive-touch button decoding alongside audio playback in compact audio docks. Compared with 8-bit MCUs, the 32-bit MIPS M4K core runs FFT-based EQ and dynamic-range compression without audible artifacts.
推薦
Smart Sensor Hub / IoT Edge Node
The PIC32MX350F256LT-V/TL aggregates sensor data over I2C and SPI using its 10-bit ADC and CTMU block, supporting capacitive touch, temperature, and humidity front-ends in compact IoT edge nodes. The 256KB Flash holds TLS-style lightweight crypto libraries, while the 64KB SRAM accommodates message queues for MQTT-SN or CoAP. The 2.3V to 3.6V operating range supports battery-powered designs down to 2xAA cells or Li-ion chemistries. Compared with 8-bit MCUs, the 32-bit MIPS M4K core runs sensor-fusion algorithms in 10-20 ms windows typical for wearable and IoT edge inference.
推薦
Battery Management Front-End
The PIC32MX350F256LT-V/TL monitors multi-cell Li-ion battery stacks via its 10-bit ADC and external analog front-ends, computing state-of-charge and coulomb-counting in 64KB SRAM. The automotive -40C to +105C grade supports under-the-hood battery management where ambient temperature swings are extreme. Two UART channels report SoC over LINbus or RS-485 to a master BMS controller, and the DMA controller handles continuous ADC sampling without CPU load. Compared with smaller PIC16 parts, the 32-bit MIPS M4K core executes 32-bit coulomb counters and lookup-table-based SoC algorithms in real time.
推薦
推薦產品摘要
工程參考資料，適用於 PIC32MX350F256LT-V/TL — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | PIC32MX350F256LT-I/TL | PIC32MX370F256L-V/TL | PIC32MX450F256L-V/TL | PIC32MX350F128LT-V/TL |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 124-VTLA (9x9) | 124-VTLA (9x9) | 124-VTLA (9x9) | 124-VTLA (9x9) | 124-VTLA (9x9) |
| Maximum CPU Clock | 80 MHz | 80 MHz | 120 MHz | 120 MHz | 80 MHz |
| DMIPS | 100 DMIPS | 100 DMIPS | 150 DMIPS | 150 DMIPS | 100 DMIPS |
| Program Flash | 256 KB | 256 KB | 256 KB | 256 KB | 128 KB |
| SRAM | 64 KB | 64 KB | 64 KB | 64 KB | 64 KB |
| USB | USB 2.0 FS device | USB 2.0 FS device | USB 2.0 FS device | USB 2.0 FS OTG + Ethernet | USB 2.0 FS device |
| Temperature Grade | -40C to +105C (V) | -40C to +85C (I) | -40C to +105C (V) | -40C to +105C (V) | -40C to +105C (V) |
主要差異化特點
- Automotive 'V' temperature grade in VTLA package (對比PIC32MX350F256LT-I/TL)
- 32-bit MIPS M4K core with 5-channel DMA (對比PIC32MX170F256L family)
- Peripheral Pin Select (PPS) flexibility (對比STM32F103 in LQFP-100)
設計說明
Decouple every VDD/VSS pair with a 0.1uF X7R ceramic placed within 3 mm of the pin, plus one bulk 10uF tantalum or ceramic near the package exposed pad. The PIC32MX350F256LT-V/TL draws up to ~70 mA at 80 MHz; a low-Iq LDO such as MCP1700 (250 mA, 1.6uA Iq) fits battery-backed designs, while automotive applications may prefer the MCP1755 for 500 mA headroom.
The 124-VTLA package relies on its exposed thermal pad for heat dissipation; flood at least four inner planes beneath the EP and stitch with 0.3 mm thermal vias to the top layer. Without proper EP soldering, the silicon can exceed 105C at moderate loads even at ambient temperature, triggering thermal-shutdown-style behavior or ADC drift.
PPS mappings MUST be unlocked, configured, and locked before enabling any peripheral - peripherals stay on their default pins if PPS is not initialized in the startup code. Also, when migrating between PIC32MX3/4 silicon revisions (A1/B1), consult the errata for ADC, USB, and PMP bugs; the PIC32MX370 family fixes several errata found in earlier PIC32MX350 silicon.
Keep the 8 MHz primary oscillator traces short and symmetric with a guard ground; route the secondary oscillator (SOSC) away from switching nodes to avoid coupling into the 32 kHz timebase used by the RTCC. The USB D+/D- pair requires 90-ohm differential impedance; route over a continuous ground plane and avoid stubs to keep the eye diagram within the USB 2.0 FS specification.
合規資訊
RoHS and lead-free per Microchip product page. AEC-Q100 qualification status is not explicitly stated in the verified data; the 'V' temperature grade suggests automotive suitability but AEC-Q100 certification should be confirmed via Microchip Direct for safety-critical designs.