PIC32MX350F128LT-I/PT - 32-bit MCU 128KB Flash 100-TQFP | Microchip
料号： PIC32MX350F128LT-I/PT ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $5.62 | $5.62 |
| 10 | $5.18 | $51.80 |
| 100 | $4.62 | $462.00 |
| 500 | $4.1 | $2,050.00 |
| 1,000 | $3.78 | $3,780.00 |
PIC32MX350F128LT-I/PT 概述
A 32-bit microcontroller (MCU) is an integrated circuit containing a processor core, program memory (Flash), data memory (SRAM), and a rich set of peripherals in a single chip. Microcontrollers are the central computing element in embedded systems, handling sensor I/O, communication, real-time control, and user-interface tasks. Within the taxonomy hierarchy, a PIC32MX is a MIPS-architecture MCU belonging to the broader categories: MCU -> embedded microcontroller -> microprocessor -> integrated circuit -> semiconductor. PIC32MX devices are commonly used in industrial, consumer, IoT, and automotive subsystems where deterministic real-time performance and strong peripheral integration are required.
Key differentiating specifications include 128KB Flash with self-programming support, 32KB SRAM with DMA, a 5-bit PMP interface for graphics or external memory, and an RTCC with calendar mode. The wide 100-TQFP package exposes 83 I/O pins for parallel buses and complex peripheral routing. The integrated USB 2.0 Full-Speed OTG controller, combined with on-chip comparators and 10-bit ADC, reduces external component count for connected embedded designs.
From an architectural standpoint, the PIC32MX350 employs the MIPS M4K core with a 5-stage pipeline, hardware multiply/divide, and a single-cycle 32-bit ALU. Its peripheral bus matrix allows concurrent DMA-driven transfers across the ADC, SPI, and USB subsystems, which is uncommon at this price tier. The instruction cache and prefetch buffer deliver near-zero-wait-state execution from Flash at full clock speed.
Typical applications include industrial control panels, USB-connected data loggers, consumer HMI with segmented displays, low-cost audio processing with I2S codecs, and sensor hubs. Its USB OTG and ample RAM also make it a fit for embedded web servers using Microchip's TCP/IP stack.
When designing with this part, ensure the 2.5V/3.3V core supply rail is decoupled with 100nF plus bulk ceramic capacitors within 5 mm of the VDD pins. Use a 12 MHz external crystal with the on-chip PLL to drive the system clock at 80 MHz. The unused I/O pins should be configured as outputs low to minimize current leakage.
This page consolidates distributor pricing, verified drop-in alternatives, application notes, and design guidance that goes well beyond the manufacturer product page and into a comparison-friendly format for analog and PowerEdge designers evaluating soldered downstream microcontrollers.
直接替换替代料： PIC32MX350F128LT-I/PT ——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： PIC32MX350F128LT-I/PT （相同外形与封装尺寸） ——差异在于 ADC, Core Architecture, I/O Pins, Package, USB.
快速对比工具——选择替代料号进行并排对比：
PIC32MX350F128L-I/PT
✅ 直接替换📋 参考替代料（不在目录中）
PIC32MX350F128LT-120V/PT
✅ 直接替换📋 参考替代料（不在目录中）
PIC32MX350F128LT-I/PF
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$3.32 / 个
查看数据手册 →PIC32MX340F128LT-80I/PT
✅ 直接替换📋 参考替代料（不在目录中）
PIC32MX270F256LT-I/PT
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
PIC32MX350F128LT-I/PT 最大额定值与电气特性
| Core Architecture | MIPS32 M4K |
| Core Size | 32-bit |
| Max CPU Speed | 80 MHz |
| Program Memory (Flash) | 128 KB (128K x 8) |
| RAM | 32 KB |
| 封装 | 100-TQFP (12x12 mm) |
| 引脚数量 | 100 |
| Operating Voltage | 2.3 V to 3.6 V |
| I/O Pins | 83 |
| ADC | 10-bit, 28 channels |
| Analog Comparators | 2 |
| I2C | 2 |
| SPI / I2S | 2 |
| UART | 2 |
| USB | USB 2.0 Full-Speed OTG |
| Timers | 5 x 16-bit |
| 工作温度 | -40C to +85C (I grade) |
| 安装类型 | Surface Mount |
| MSL 等级 | 3 |
| RoHS 状态 | Compliant |
PIC32MX350F128LT-I/PT 100-tqfp (12x12 mm) 引脚配置指南
PIC32MX350F128LT-I/PT（100-tqfp (12x12 mm) 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： PIC32MX350F128LT-I/PT.
请参阅 数据手册 以查看完整引脚配置。
典型应用
PIC32MX350F128LT-I/PT 适用于 7 应用s: USB-Connected Data Logger, Industrial Control Panel HMI, Audio Processing with I2S Codecs, Low-Cost IoT Sensor Hub, Consumer Embedded Web Server, Automotive Auxiliary Control Module, Educational Development Platform.
USB-Connected Data Logger
The PIC32MX350F128LT-I/PT integrates USB 2.0 Full-Speed OTG with 128 KB Flash and 32 KB SRAM, making it well-suited for USB-connected data loggers that stream sensor readings to a host. Its 28-channel 10-bit ADC provides ample analog inputs for multi-sensor acquisition, while DMA offloads data movement from the core, allowing sustained logging at high sample rates. Placed on a custom PCB with external Flash storage, it can serve as a USB-TMC or USB-MSD instrument. Compared to non-USB MCUs, it eliminates the need for an external bridge IC, reducing BOM cost and PCB area for connected test and measurement applications.
推荐
Industrial Control Panel HMI
With 83 I/O pins and a 5-bit Parallel Master Port, the PIC32MX350F128LT-I/PT supports direct connection to character LCDs, keypads, and segmented displays commonly found in machinery control panels. Its MIPS M4K core running at 80 MHz provides deterministic response times for real-time control loops. The wide 2.3-3.6 V supply range tolerates industrial 24 V bus-derived 3.3 V rails. For panel designs, place the MCU on the back of the PCB with the LCD connector nearby and route PMP data lines as a matched-length group for clean display update transactions.
推荐
Audio Processing with I2S Codecs
The PIC32MX350F128LT-I/PT provides two SPI/I2S ports capable of driving external audio codecs for low-cost audio playback and recording applications. Its DMA engine can move audio samples between I2S and a buffer in parallel with signal processing. At 80 MHz, the MCU can run audio DSP tasks such as filtering and mixing alongside USB streaming. Compared to MCU-only designs without I2S, this part reduces external component count and BOM cost by integrating the audio serial interface on-chip, ideal for kiosks, intercoms, and consumer audio peripherals.
推荐
Low-Cost IoT Sensor Hub
The PIC32MX350F128LT-I/PT combines USB connectivity, dual I2C, dual SPI, and dual UART, allowing a single MCU to bridge traffic between a low-power sensor frontend and a host system. Its 32 KB SRAM is sufficient for buffering modest sensor streams, while 128 KB Flash accommodates networking stacks like TCP/IP or USB CDC. Operate at 3.3 V from a regulated rail and use the on-chip RTCC for timestamped logging. Compared to MCU-only designs needing external bridges, this part integrates multiple serial interfaces on-chip, reducing BOM and PCB area for IoT gateways.
推荐
Consumer Embedded Web Server
The PIC32MX350F128LT-I/PT runs Microchip's TCP/IP stack with 128 KB Flash and 32 KB SRAM, sufficient for embedded web servers managing device configuration, status monitoring, and OTA updates. Its USB OTG and dual UART simplify connectivity to WiFi or Ethernet modules via serial AT commands. At 80 MHz, HTTP request parsing and JSON serialization are achievable for small to medium web UIs. Compared to MCU designs needing an external network controller, this part's peripheral set reduces external component count for connected consumer appliances and home automation hubs.
推荐
Automotive Auxiliary Control Module
While the standard PIC32MX350F128LT-I/PT is industrial-grade -40C to +85C, it is widely used in non-safety automotive subsystems such as interior lighting controllers, HVAC auxiliary panels, and infotainment peripherals. Its USB OTG supports media interfaces, while 83 I/O drive LEDs, keypads, and small relays. Operate from a 12 V-derived 3.3 V rail with reverse-polarity and load-dump protection. According to the Microchip datasheet, AEC-Q100 qualified derivatives exist in the PIC32MX family for safety-critical automotive applications requiring wider temperature ranges.
推荐
Educational Development Platform
The PIC32MX350F128LT-I/PT is widely supported by Microchip's MPLAB X IDE, Harmony framework, and a rich ecosystem of free libraries for USB, graphics, and TCP/IP. With 128 KB Flash and 32 KB RAM, it accommodates substantial teaching examples and student projects without out-of-memory errors. Its 100-TQFP package is breadboard-friendly with breakout boards. Compared to MCU platforms lacking comprehensive free tooling, this part's mature software ecosystem accelerates student learning and prototyping for university embedded systems courses.
推荐
推荐产品汇总
工程参考数据： PIC32MX350F128LT-I/PT ——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 | PIC32MX350F128L-I/PT | PIC32MX350F128LT-120V/PT | PIC32MX350F128LT-I/PF | PIC32MX340F128LT-80I/PT | PIC32MX270F256LT-I/PT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 100-TQFP (12x12 mm) | 100-TQFP (PT) - same | 100-TQFP (PT) - same | 100-TQFP (PF) - same | 100-TQFP (PT) - same | 100-TQFP (PT) - same |
| Flash Memory | 128 KB | 128 KB | 128 KB | 128 KB | 128 KB | 256 KB |
| SRAM | 32 KB | 32 KB | 32 KB | 32 KB | 32 KB | 32 KB |
| Max CPU Speed | 80 MHz | 80 MHz | 120 MHz | 100 MHz | 80 MHz | 50 MHz |
| USB OTG | Yes (Full-Speed) | Yes | Yes | Yes | No | Yes |
| Operating Temperature | -40C to +85C (I grade) | -40C to +85C | -40C to +105C (V) | -40C to +85C | -40C to +85C | -40C to +85C |
| ADC Channels | 28 x 10-bit | 28 | 28 | 28 | 16 | 28 |
关键差异点
- Integrated USB 2.0 Full-Speed OTG （对比 PIC32MX340F128LT-80I/PT)
- Dual I2S audio interface （对比 PIC32MX340F128LT-80I/PT)
- 5-bit Parallel Master Port for graphics or memory （对比 PIC32MX340F128LT-80I/PT)
设计说明
The PIC32MX350F128LT-I/PT requires a clean 2.3-3.6 V supply at 80 MHz operation. Place a 100 nF X7R ceramic decoupling capacitor within 5 mm of each VDD/VDDcore pin pair. Add a 4.7 uF or 10 uF bulk tantalum or ceramic capacitor at the regulator output. According to the Microchip datasheet DS60001185K, decoupling the analog AVDD pin separately from digital VDD with a ferrite bead or filter reduces ADC noise coupling by typically 3-5 LSB at 28-input full scan.
Route the 80 MHz system clock traces as short, impedance-matched 50-ohm microstrip lines if external memory or bus peripherals are connected. The 100-TQFP (12x12 mm) package has 0.5 mm pitch leads; use 8 mil traces with 8 mil spaces to escape the pinout. Place the 12 MHz crystal within 5 mm of the OSCI/OSCO pins and ground its case to the ground ring surrounding the MCU. The exposed thermal pad underneath the TQFP must be soldered to a copper pour for mechanical reliability.
Do not skip configuration of unused I/O pins - configure as outputs driven low to minimize current leakage at 80 MHz switching. The USB D+/D- pins require 45-ohm series resistors and a 1.5 kohm pull-up to D- for full-speed operation; omit them only in non-USB designs. Programming via ICSP requires specific pin mapping; refer to the Microchip programming specification before laying out debug headers. According to the datasheet, exceeding 3.6 V on any I/O pin causes permanent damage.
合规信息
RoHS compliant per Microchip product page. The I grade operates -40C to +85C industrial range; for AEC-Q100 automotive qualified PIC32MX variants consult the Microchip parametric search filtered to automotive grade.
