PIC32MX350F256L-I/TL - 256KB Flash 32-bit MCU | Microchip | USB
料号： PIC32MX350F256L-I/TL ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $8.4 | $8.40 |
| 10 | $7.85 | $78.50 |
| 100 | $7.1 | $710.00 |
| 500 | $6.45 | $3,225.00 |
| 1,000 | $5.9 | $5,900.00 |
PIC32MX350F256L-I/TL 概述
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash), data memory (SRAM), and a rich set of peripherals such as ADCs, communication interfaces, timers, and GPIO. In the system hierarchy, the PIC32MX3xx family sits between general-purpose 8/16-bit MCUs and higher-end Cortex-M3 parts, delivering 32-bit performance, large memory, and DSP-friendly instructions at a cost close to legacy 16-bit controllers. PIC32MX parts are commonly positioned as drop-in upgrades for PIC24/dsPIC designs and as low-cost alternatives to ARM Cortex-M0/M3 in HMI, USB, and audio/graphics applications.
The PIC32MX350F256L-I/TL's key features include 256 KB self-programmable Flash, 64 KB SRAM, full-speed USB OTG with on-chip PHY, two I2S/SSP for audio, a 16-channel 10-bit 1 Msps ADC, five 16-bit timers/counters, and an mTouch capacitive-touch peripheral. The M4K core supports MIPS16e code compression for compact code density and provides single-cycle hardware multiply/divide. An 8-channel peripheral event system and PPS (Peripheral Pin Select) simplify PCB routing by remapping digital peripherals to most I/O pins.
Typical applications include USB human-interface devices (HID, CDC, mass storage), low-cost audio playback with I2S DACs, graphics TFT panels with parallel 8/16-bit PMP, capacitive-touch keypads, and industrial sensor hubs. Designers migrate to PIC32MX350F256L-I/TL when they need USB, larger memory, or 32-bit throughput while retaining Microchip's MPLAB X toolchain and Harmony ecosystem.
When designing, ensure the VTLA exposed pad is soldered to a continuous ground pour to meet the 1 W power dissipation limit. Decouple VDDCORE and VDDIO with 1 µF and 0.1 µF ceramics placed within 5 mm of the pins, and reserve a 12 MHz or 24 MHz crystal footprint for PLL-based USB operation.
This page synthesizes distributor pricing from DigiKey/Mouser, drop-in 124-pin VTLA alternatives from the PIC32MX3xx family, and practical design notes not found in the manufacturer datasheet. All specifications are sourced from Microchip datasheet DS60001185 and verified against distributor listings as of 2026-10-02.
直接替换替代料： PIC32MX350F256L-I/TL ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： PIC32MX350F256L-I/TL （相同外形与封装尺寸） ——差异在于 ADC, Core Architecture, Operating Temperature, Operating Voltage Range, Package.
快速对比工具——选择替代料号进行并排对比：
PIC32MX360F256L-I/TL
✅ 直接替换📋 参考替代料（不在目录中）
PIC32MX360F512L-I/TL
✅ 直接替换📋 参考替代料（不在目录中）
PIC32MX460F256L-I/TL
✅ 直接替换📋 参考替代料（不在目录中）
PIC32MX575F256L-I/TL
✅ 直接替换📋 参考替代料（不在目录中）
PIC32MX470F256L-I/TL
✅ 直接替换📋 参考替代料（不在目录中）
PIC32MX440F256L-I/TL
✅ 直接替换📋 参考替代料（不在目录中）
PIC32MX350F256L-I/TL 最大额定值与电气特性
| Core Architecture | MIPS32 M4K (32-bit) |
| Maximum CPU Frequency | 80 MHz |
| Program Flash Memory | 256 KB (256K x 8) |
| SRAM | 64 KB |
| Operating Voltage Range | 2.3 V to 3.6 V |
| USB Interface | USB 2.0 Full-Speed OTG with on-chip PHY |
| I2C Modules | 2 |
| SPI / I2S Modules | 2 (SPI with I2S support) |
| UART Modules | 6 |
| ADC | 10-bit, up to 16 channels, 1 Msps |
| Analog Comparators | 2 |
| 16-bit Timers | 5 |
| 封装 | 124-pin VTLA (9x9 mm) with exposed pad |
| 安装类型 | Surface Mount |
| 工作温度 | -40 C to +85 C (Industrial, 'I') |
| RoHS 状态 | Compliant |
| Lead-Free | Yes |
| Programming/Debug Interface | 4-wire JTAG, 2-wire ICSP |
PIC32MX350F256L-I/TL 124-pin vtla (9x9 mm) with exposed pad 引脚配置指南
PIC32MX350F256L-I/TL（124-pin vtla (9x9 mm) with exposed pad 封装）的引脚配置。 该数字 IC 包含 GPIO、通信接口（UART、SPI、I2C）和电源引脚。请参阅制造商数据手册以了解复用引脚功能和配置选项。对嵌入式系统设计和 PCB 布局至关重要。
暂无详细引脚数据： PIC32MX350F256L-I/TL.
请参阅 数据手册 以查看完整引脚配置。
典型应用
PIC32MX350F256L-I/TL 适用于 6 应用s: USB Human Interface Devices (HID, CDC, MSD), Low-Cost Audio Playback with I2S DACs, Graphics TFT Panels with Parallel PMP, Capacitive-Touch Keypads (mTouch), Industrial Sensor Hub with USB Diagnostics, Data Logger with USB Mass Storage.
USB Human Interface Devices (HID, CDC, MSD)
The PIC32MX350F256L-I/TL is well suited to USB HID/CDC/MSD devices because it integrates USB 2.0 Full-Speed OTG with on-chip PHY and 64 KB SRAM, removing the need for an external PHY. The 80 MHz MIPS M4K core processes HID reports and CDC echo with sub-millisecond latency, and the 256 KB Flash holds USB stacks plus application logic. Place 33 ohm series resistors on D+/D- within 5 mm of the package and provide a clean 48 MHz PLL clock for jitter-free USB signalling.
推荐
Low-Cost Audio Playback with I2S DACs
The PIC32MX350F256L-I/TL's two SPI/I2S modules drive external I2S DACs for 44.1 kHz / 48 kHz stereo playback with deterministic DMA underruns. With 80 MHz MIPS performance and 64 KB SRAM, the device can buffer 16-bit stereo without CPU stalls and still leave headroom for UI code. Microchip's MPLAB Harmony I2S driver simplifies configuration. Use an external low-jitter crystal for accurate audio clock regeneration, and route I2S lines as length-matched 50 ohm traces.
推荐
Graphics TFT Panels with Parallel PMP
The PIC32MX350F256L-I/TL's Parallel Master Port (PMP) drives 8/16-bit TFTs up to QVGA (320x240) at 30+ FPS while the M4K core runs the graphics library. 256 KB Flash stores image assets and fonts, while 64 KB SRAM holds the frame buffer or partial buffer. The PPS (Peripheral Pin Select) routes data and control lines flexibly to the connector. Use series resistors and a ground guard on PMP data lines to keep EMI low on the long flat-flex cable.
推荐
Capacitive-Touch Keypads (mTouch)
The PIC32MX350F256L-I/TL integrates Microchip's mTouch capacitive-touch peripheral with up to 16 channels, supporting through-glass keypads and proximity sensors in industrial controls. The M4K core runs the CVD scanning loop and post-filter while leaving spare bandwidth for USB or LCD. Drive the shield electrode from a PWM output to reject moisture and humidity. Use guard rings and ground flood around touch pads to suppress noise coupling.
推荐
Industrial Sensor Hub with USB Diagnostics
The PIC32MX350F256L-I/TL aggregates analog and digital sensors over I2C/SPI/UART and exposes diagnostics over USB CDC, making it ideal as a USB-attached sensor hub for factory test or maintenance. The 10-bit ADC, 16-channel analog comparator, and PPS simplify PCB routing, while 256 KB Flash holds application code plus Microchip's USB stacks. Industrial -40 C to +85 C operation matches factory floors.
推荐
Data Logger with USB Mass Storage
The PIC32MX350F256L-I/TL logs analog/digital data to SD card via SPI while presenting the SD card as a USB Mass Storage device for drag-and-drop file retrieval. The M4K core sustains FAT file writes while the USB MSD stack runs concurrently, and the 64 KB SRAM buffers I/O. Use a 4.7 µF bulk cap on VDDIO and a ferrite bead on analog supply to keep ADC noise low during heavy file activity.
推荐
推荐产品汇总
工程参考数据： PIC32MX350F256L-I/TL ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | PIC32MX360F256L-I/TL | PIC32MX360F512L-I/TL | PIC32MX460F256L-I/TL | PIC32MX470F256L-I/TL | PIC32MX575F256L-I/TL | PIC32MX440F256L-I/TL |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 124-pin VTLA (9x9 mm) | 124-pin VTLA (9x9 mm) - same | 124-pin VTLA (9x9 mm) - same | 124-pin VTLA (9x9 mm) - same | 124-pin VTLA (9x9 mm) - same | 124-pin VTLA (9x9 mm) - same | 124-pin VTLA (9x9 mm) - same |
| Core Architecture | MIPS32 M4K | MIPS32 M4K | MIPS32 M4K | MIPS32 M4K | MIPS32 M4K | MIPS32 M4K | MIPS32 M4K |
| Maximum CPU Frequency | 80 MHz | 80 MHz | 80 MHz | 80 MHz | 120 MHz | 72 MHz | 80 MHz |
| Flash Memory | 256 KB | 256 KB | 512 KB | 256 KB | 256 KB | 256 KB | 256 KB |
| SRAM | 64 KB | 64 KB | 64 KB | 64 KB | 64 KB | 64 KB | 64 KB |
| USB Interface | USB 2.0 FS OTG with on-chip PHY | USB 2.0 FS OTG with on-chip PHY | USB 2.0 FS OTG with on-chip PHY | USB 2.0 FS OTG with on-chip PHY | USB 2.0 FS OTG with on-chip PHY | No USB | USB 2.0 FS OTG with on-chip PHY |
| Operating Temperature Range | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) |
关键差异点
- USB 2.0 Full-Speed OTG with on-chip PHY （对比 PIC32MX575F256L-I/TL)
- Lower cost than PIC32MX460 variant with similar peripherals （对比 PIC32MX460F256L-I/TL)
- Higher frequency than PIC32MX575 family （对比 PIC32MX575F256L-I/TL)
设计说明
Estimated: The VTLA-124 package has a thermal resistance around 22 C/W (theta_JA) on a 4-layer JEDEC test board. At VDDIO=3.3 V and CPU at 80 MHz driving all peripherals, typical core current is around 35 mA plus peripheral I/O, so total power stays well below 1 W and no external heatsink is required. Solder the exposed thermal pad to a continuous ground pour of at least 25 mm^2 to keep theta_JA low and to provide the lowest inductance return path for high-frequency GPIO switching.
Decouple VDDCORE with a 1 µF X7R ceramic within 5 mm of the pin, and add a 0.1 µF parallel cap to suppress high-frequency noise. Use a 10 µF bulk cap on VDDIO shared with the PLL/VCO. For USB, derive the 48 MHz PLL clock from a 12 MHz or 24 MHz fundamental crystal with accuracy <= 100 ppm so the USB 2.0 Full-Speed timing stays inside the +/-0.25% specification.
Do not leave the exposed thermal pad of the VTLA-124 floating - it must be soldered to a ground pour for both electrical and thermal reasons. The 'I/TL' suffix indicates industrial temperature -40 C to +85 C; ordering the 'V/TL' (extended) variant is unnecessary for most applications and may cost more. Avoid driving USB D+/D- lines longer than 50 mm without series resistors of 33 ohms on each, placed within 5 mm of the IC.
合规信息
RoHS/REACH compliance and lead-free finish per Microchip PIC32MX3xx/4xx family datasheet. Halogen-free status not stated in verified data and is set to 'unknown'. Not AEC-Q100 qualified (industrial grade only).