PIC32MX350F128LT-I/TL - 32-bit 80MHz 128KB Flash MCU | Microchip
料号： PIC32MX350F128LT-I/TL ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $6.95 | $6.95 |
| 10 | $6.21 | $62.10 |
| 100 | $5.46 | $546.00 |
| 500 | $4.92 | $2,460.00 |
| 1,000 | $4.41 | $4,410.00 |
PIC32MX350F128LT-I/TL 概述
A 32-bit PIC32 microcontroller is a high-performance RISC processor that combines the deterministic behaviour of the MIPS32 M4K core with a rich set of integrated peripherals. The PIC32MX3/4 family sits in the power-management IC taxonomy between 8-bit PIC16/PIC18 MCUs and the higher-end PIC32MZ parts, targeting cost-sensitive 32-bit applications where headroom for USB, CAN, or graphics PMP is not required.
Key differentiating features include two SPI/I2S interfaces suitable for audio codec connectivity, two I2C ports, two UART modules, an 8-bit parallel master port (PMP) for graphics or external memory, five 16-bit timers, five PWM channels, four DMA channels, and 85 usable I/O lines. The on-chip 10-bit ADC provides up to 28 input channels at 1 Msps, enabling high-speed mixed-signal designs without an external converter.
The architecture combines a single-cycle multiply and hardware divide unit with tightly-coupled SRAM, giving deterministic interrupt response suitable for real-time control. The 124-pin VTLA EP package offers a low-profile surface-mount footprint with an exposed thermal pad, simplifying PCB thermal management. The integrated 8 MHz internal RC oscillator with PLL provides flexible clocking options from a single 8 MHz crystal.
Typical applications include industrial control panels, low-cost graphical user interfaces using the PMP, consumer audio peripherals leveraging the I2S ports, USB HID devices, embedded data loggers, and sensor hubs. The combination of USB 2.0 full-speed On-The-Go, CAN, and ample I/O makes it well-suited for automotive body and chassis subsystems as well as building automation nodes.
Design consideration: a stable 3.3V rail with bulk + decoupling capacitance is mandatory for ADC accuracy. Place the 124-pin VTLA EP exposed pad onto a continuous ground copper pour for thermal dissipation. Configure the JTAG/trace interface through the dedicated programming pins to avoid conflicts with general-purpose I/O.
This page synthesises distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone, complementing the official 600+ page PIC32MX3/4 family reference manual.
直接替换替代料： PIC32MX350F128LT-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： PIC32MX350F128LT-I/TL （相同外形与封装尺寸） ——差异在于 Operating Temperature, Package, ADC, Core Architecture, Mounting Type.
快速对比工具——选择替代料号进行并排对比：
该产品暂无直接替换替代料。
请求替代料PIC32MX350F128LT-I/TL 最大额定值与电气特性
| Core Architecture | MIPS32 M4K |
| 数据总线宽度 | 32-bit |
| Core Frequency | 80 MHz (100 DMIPS) |
| Program Memory (Flash) | 128 KB |
| SRAM | 32 KB |
| 电源电压 | 2.5 V to 3.6 V |
| I/O Lines | 85 |
| ADC | 10-bit, up to 28 channels, 1 Msps |
| Comparators | 2 analog |
| Timers | 5 x 16-bit |
| PWM Channels | 5 |
| DMA Channels | 4 |
| Communication Interfaces | 2x SPI/I2S, 2x I2C, 2x UART, USB 2.0 OTG, CAN |
| Parallel Master Port (PMP) | 8-bit |
| 封装 | 124-pin VTLA EP |
| 工作温度 | -40 C to +85 C (Industrial) |
| 安装类型 | Surface Mount |
| RoHS 状态 | Compliant |
PIC32MX350F128LT-I/TL 引脚配置
| 引脚 1 | EP — Exposed thermal pad (ground) |
| 引脚 2 | AN0/RPB0/CTED1/RB0 — Analog input / GPIO |
| 引脚 3 | AN1/RPB1/CTED2/RB1 — Analog input / GPIO |
| 引脚 4 | AN2/RPB2/RB2 — Analog input / GPIO |
| 引脚 5 | AN3/RPB3/RB3 — Analog input / GPIO |
| 引脚 6 | AN4/RPB4/RB4 — Analog input / GPIO |
| 引脚 7 | AVSS — Analog ground |
| 引脚 8 | AVDD — Analog supply voltage |
| 引脚 9 | MCLR — Master clear / reset input |
| 引脚 10 | OSC1/CLKI/RC13 — Crystal oscillator input |
| 引脚 11 | OSC2/CLKO/RC14 — Crystal oscillator output |
| 引脚 12 | VBUS — USB bus power sense |
| 引脚 13 | VUSB — USB 3.3V supply |
| 引脚 14 | D-/RG3 — USB D-minus / GPIO |
| 引脚 15 | D+/RG2 — USB D-plus / GPIO |
| 引脚 16 | VDD — Digital supply voltage |
| 引脚 17 | VSS — Digital ground |
| 引脚 18 | PGEC1/AN5/RB5 — ICSP clock / GPIO |
| 引脚 19 | PGED1/AN6/RB6 — ICSP data / GPIO |
| 引脚 20 | PGEC2/AN7/RB7 — ICSP clock 2 / GPIO |
典型应用
PIC32MX350F128LT-I/TL 适用于 7 应用s: Industrial Control Panels, Low-Cost Graphical User Interfaces, Consumer Audio Peripherals, USB HID and Data Acquisition Devices, Automotive Body Electronics, Building Automation Nodes, Embedded Data Loggers.
Industrial Control Panels
The PIC32MX350F128LT-I/TL fits industrial HMI control panels because it integrates 85 I/O lines, two UARTs for RS-232/RS-485 transceivers, two I2C buses for sensor and EEPROM expansion, and a 10-bit 1 Msps ADC with 28 channels to read multiple analog inputs simultaneously. The 80 MHz MIPS32 M4K core delivers 100 DMIPS, sufficient to run a real-time control loop alongside a graphical menu. Designers place the MCU between the 24V isolated supply and the LCD/button matrix; the wide 2.5-3.6 V input range tolerates noisy industrial rails.
推荐
Low-Cost Graphical User Interfaces
The PIC32MX350F128LT-I/TL is well-suited for driving low-cost graphical LCDs through its integrated 8-bit parallel master port (PMP). The PMP provides up to 16 MB/s throughput, sufficient for direct drive of 320x240 QVGA panels with small framebuffers in internal SRAM. The 80 MHz core and 32 KB SRAM can manage light graphics rendering without an external controller. Compared to using a separate LCD controller IC, the integrated PMP saves PCB area and BOM cost.
推荐
Consumer Audio Peripherals
Consumer audio docks and headphone amplifiers leverage the PIC32MX350F128LT-I/TL's dual SPI/I2S interfaces to bridge an external audio DAC/ADC codec. The I2S ports support up to 24-bit audio at standard 44.1/48 kHz rates. The 80 MHz MIPS32 core handles USB audio streaming, sample-rate conversion, and user-interface state machines concurrently. Designers pair the MCU with a low-noise 3.3 V LDO to drive sensitive analog sections, isolating digital and analog ground domains.
推荐
USB HID and Data Acquisition Devices
USB-based data acquisition and HID devices benefit from the PIC32MX350F128LT-I/TL's integrated USB 2.0 full-speed On-The-Go controller, which provides a hardware transaction engine for low CPU overhead. The 10-bit ADC with 1 Msps and 28 channels enables multi-channel sampling at rates up to 40 ksps per channel. The 4 DMA channels move conversion results to memory without CPU intervention, freeing 80 MIPS for USB protocol handling and user application logic.
推荐
Automotive Body Electronics
Body and chassis modules such as HVAC controllers, lighting, and seat control units use the PIC32MX350F128LT-I/TL for its CAN 2.0B interface, dual LIN-compatible UARTs, and PWM channels. The MCU's 85 I/O lines drive multiple loads through external MOSFETs, and the 5 PWM channels support motor speed/dimming. The industrial temperature grade (-40 C to +85 C) suits cabin-mounted modules; AEC-Q100 qualification is NOT met, so for under-hood applications select an automotive-grade PIC32 part.
推荐
Building Automation Nodes
Building automation sensor hubs and wireless gateways leverage the PIC32MX350F128LT-I/TL for its combination of dual I2C, dual SPI, and USB interfaces. I2C buses connect to environmental sensors (temperature, humidity, CO2), while SPI drives external radios or non-volatile memory. The 80 MHz core runs a real-time wireless protocol stack alongside sensor polling. The 124-pin VTLA EP package with exposed thermal pad supports compact wall-mounted enclosures with adequate thermal dissipation.
推荐
Embedded Data Loggers
The PIC32MX350F128LT-I/TL is well-matched to multi-channel data loggers that need to sample analog signals via the 28-channel 10-bit ADC and store data on SD cards through SPI. The 128 KB Flash holds the application firmware and configuration, while 32 KB SRAM buffers ADC conversions before SD write bursts. The on-chip 8 MHz RC oscillator with PLL provides system clocks without external crystals, reducing BOM and saving board space in cost-sensitive logger designs.
推荐
推荐产品汇总
工程参考数据： PIC32MX350F128LT-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 | PIC32MX350F128HT-V/MR |
|---|---|---|
| Package | 124-pin VTLA EP | 64-pin VTLA EP - DIFFERENT |
| Brand | Microchip Technology | Microchip Technology |
| Core Frequency | 80 MHz | 80 MHz |
| Flash Memory | 128 KB | 128 KB |
| SRAM | 32 KB | 32 KB |
| I/O Lines | 85 | ~50 (64-pin) |
| USB 2.0 OTG | Yes | Yes |
| CAN | Yes | Yes |
| Temperature Grade | Industrial (-40C to +85C) | Automotive (-40C to +105C) |
| Pin Count | 124 | 64 |
关键差异点
- Largest pin count in PIC32MX350 family （对比 PIC32MX350F128HT-V/MR)
- Industrial temperature grade only （对比 PIC32MX350F128LT-V/TL)
- Integrated 8-bit PMP for graphics （对比 PIC32MX270F256D-I/TL)
设计说明
The PIC32MX350F128LT-I/TL requires a clean 2.5-3.6 V supply with bulk decoupling. Place a 10 uF ceramic + 1 uF + 100 nF decoupling network within 5 mm of each VDD/VSS pair. For USB applications, route VUSB from the internal regulator with a 0.47 uF bypass to VSS to stabilise USB PHY supply. Use a dedicated LDO if analog ADC accuracy is required; shared noisy rails cause ADC noise floor degradation of 1-2 LSB.
The 124-pin VTLA EP package includes a large central exposed pad that must be soldered to a ground pour for thermal dissipation. Estimated: at maximum core activity (80 MHz) the die consumes around 50 mA, so dissipation is below 200 mW and no external heatsink is required. Ensure the EP copper pour area is at least 100 mm^2 on top layer with multiple thermal vias to inner ground planes for adequate heat spreading.
For 80 MHz USB signal integrity, route D+ and D- as a 90 ohm differential pair with continuous ground reference, length-matched within 150 mils. Keep USB traces away from switching power inductors and high-speed digital buses. Place the crystal oscillator within 5 mm of OSC1/OSC2 with a guard ring tied to analog ground to minimise jitter. JTAG/ICSP pins (PGEC1/PGED1) need pull-ups or pull-downs as specified in the datasheet for proper programming.
Do not float the MCLR pin; it requires a 10 kOhm pull-up to VDD and a 100 nF cap to VSS for noise immunity. Avoid using both I2S ports and PMP simultaneously without checking pin multiplexing in the PPS (Peripheral Pin Select) configuration. When migrating from PIC32MX340, verify the USB register definitions because PIC32MX350 has enhanced PLL configuration that requires different initialization. Always configure the JTAG pins as GPIO if not using JTAG, otherwise unused JTAG inputs can cause unwanted current draw.
合规信息
RoHS compliant per Microchip product page. Not AEC-Q100 qualified - select V-temperature or PIC32MX automotive-grade variants for automotive applications.
