PIC32MX250F128DT-50I/TL - 50MHz 32-bit MCU 128KB Flash USB | Microchip
料号： PIC32MX250F128DT-50I/TL ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $4.85 | $4.85 |
| 10 | $4.43 | $44.30 |
| 100 | $3.78 | $378.00 |
| 500 | $3.35 | $1,675.00 |
| 1,000 | $2.96 | $2,960.00 |
| 3,000 | $2.74 | $8,220.00 |
PIC32MX250F128DT-50I/TL 概述
A 32-bit microcontroller is a single-chip processor with a 32-bit data path, on-chip Flash program memory, SRAM, and a rich peripheral set. PIC32MX parts sit in the broader taxonomy of 32-bit MCU -> embedded processor -> microcontroller -> semiconductor IC. Unlike 8-bit/16-bit MCUs, the PIC32MX M4K core supports single-cycle multiplication and Harvard architecture, enabling deterministic interrupt latency for real-time control.
Key features include five 16-bit timers/counters, a 16-channel 10-bit ADC capable of 1 Msps conversion, CTMU for capacitance measurement, an analog comparator, and a charge-time measurement unit for mTouch. The USB 2.0 full-speed On-The-Go controller adds tethered/hostless connectivity, while two I2S/SSI peripherals support audio CODECs and serial DACs. PMA graphics interfacing through PMP enables direct connection to QVGA displays without external RAMDACs.
The PIC32MX250F128D is built on a 0.18 µm flash process with the MIPS32 M4K core delivering 1.56 DMIPS/MHz at 50 MHz. Hardware-level PPS remapping of digital peripherals to nearly any I/O pin simplifies PCB routing. Five 16-bit timers support input capture, output compare, and quadrature encoding. The integrated 10-bit ADC supports up to 28 analog inputs and 1 Msps sampling. USB OTG, two I2S, two I2C, two UART/USART peripherals, and an SPI interface provide flexible connectivity.
Typical applications include USB peripherals, audio interfaces, low-cost graphics HMI, mTouch capacitive touch sensing, and industrial control. The USB OTG and PMP graphics interface make it well-suited for embedded hosts, while the CTMU supports capacitive buttons and sliders in human-machine interfaces.
When designing with this part, note that the 44-pin VTLA package shares its pinout with the PIC32MX250F128D-50I/TL non-T variant. Operating voltage is 2.3V-3.6V; a 3.3V LDO with adequate decoupling is required for noise-sensitive applications.
This page combines verified distributor pricing, same-package drop-in alternatives, and practical design notes that are not aggregated in the manufacturer datasheet alone.
直接替换替代料： PIC32MX250F128DT-50I/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： PIC32MX250F128DT-50I/TL （相同外形与封装尺寸） ——差异在于 ADC, Package, Core Architecture, Timers, I/O Pins.
快速对比工具——选择替代料号进行并排对比：
PIC32MX250F128D-50I/TL
✅ 直接替换✓ 有现货
$3.98 / 个
查看数据手册 →PIC32MX250F128D-50I/ML
✅ 直接替换✓ 有现货
$4.15 / 个
查看数据手册 →PIC32MX230F128DT-50I/TL
✅ 直接替换📋 参考替代料（不在目录中）
PIC32MX170F256DT-50I/TL
✅ 直接替换✓ 有现货
$4.16 / 个
查看数据手册 →PIC32MX150F128DT-50I/TL
✅ 直接替换✓ 有现货
$3.41 / 个
查看数据手册 →PIC32MX130F128HT-50I/PT
✅ 直接替换✓ 有现货
$3.05 / 个
查看数据手册 →PIC32MX270F256B-E/RTC
✅ 直接替换📋 参考替代料（不在目录中）
PIC32MX250F128DT-50I/TL 最大额定值与电气特性
| Core Architecture | MIPS32 M4K 32-bit RISC |
| Maximum CPU Frequency | 50 MHz |
| DMIPS Performance | 83 DMIPS |
| Program Memory (Flash) | 128 KB (128K x 8) |
| Data Memory (SRAM) | 32 KB |
| Operating Voltage (VDD) | 2.3 V to 3.6 V |
| I/O Pins | 34 (approx.) |
| ADC | 10-bit, up to 28 channels, 1 Msps |
| USB | USB 2.0 Full-Speed Device/Host/OTG |
| Timers | 5 x 16-bit |
| UART/USART | 2 |
| I2C | 2 |
| SPI/I2S | 2 SPI or I2S |
| PMP (Parallel Master Port) | Yes (graphics interface) |
| RTCC | Yes |
| CTMU (Capacitive Touch) | Yes (mTouch) |
| Analog Comparators | 2 |
| Peripheral Pin Select (PPS) | Yes |
| 封装 | 44-pin VTLA (6x6 mm) |
| 安装类型 | Surface Mount |
| 工作温度 | -40C to +85C (Industrial) |
| RoHS 状态 | Compliant |
PIC32MX250F128DT-50I/TL 引脚配置
| 引脚 1 | RA0 — I/O port A bit 0 / analog input AN0 |
| 引脚 2 | RA1 — I/O port A bit 1 / analog input AN1 |
| 引脚 3 | RA2 — I/O port A bit 2 / analog input AN2 |
| 引脚 4 | RA3 — I/O port A bit 3 / analog input AN3 |
| 引脚 5 | RA4 — I/O port A bit 4 |
| 引脚 6 | VDD — Positive supply voltage (2.3V-3.6V) |
| 引脚 7 | VSS — Ground reference |
| 引脚 8 | RB0 — I/O port B bit 0 / analog input AN4 |
| 引脚 9 | RB1 — I/O port B bit 1 / analog input AN5 |
| 引脚 10 | RB2 — I/O port B bit 2 / analog input AN6 |
| 引脚 11 | RB3 — I/O port B bit 3 / analog input AN7 |
| 引脚 12 | RB4 — I/O port B bit 4 / analog input AN8 |
| 引脚 13 | RB5 — I/O port B bit 5 / analog input AN9 |
| 引脚 14 | RB6 — I/O port B bit 6 / AN10 / ICDCLK |
| 引脚 15 | RB7 — I/O port B bit 7 / AN11 / ICDDAT |
| 引脚 16 | VSS — Ground reference |
| 引脚 17 | RC0 — I/O port C bit 0 |
| 引脚 18 | RC1 — I/O port C bit 1 |
| 引脚 19 | RC2 — I/O port C bit 2 |
| 引脚 20 | RC3 — I/O port C bit 3 |
| 引脚 21 | RC4 — I/O port C bit 4 / D- |
| 引脚 22 | RC5 — I/O port C bit 5 / D+ |
| 引脚 23 | RC6 — I/O port C bit 6 |
| 引脚 24 | RC7 — I/O port C bit 7 |
| 引脚 25 | RD0 — I/O port D bit 0 |
| 引脚 26 | RD1 — I/O port D bit 1 |
| 引脚 27 | RD2 — I/O port D bit 2 |
| 引脚 28 | RD3 — I/O port D bit 3 |
| 引脚 29 | RD4 — I/O port D bit 4 |
| 引脚 30 | RD5 — I/O port D bit 5 |
| 引脚 31 | RD6 — I/O port D bit 6 |
| 引脚 32 | RD7 — I/O port D bit 7 |
| 引脚 33 | RE0 — I/O port E bit 0 / analog input AN12 |
| 引脚 34 | RE1 — I/O port E bit 1 / analog input AN13 |
| 引脚 35 | RE2 — I/O port E bit 2 / analog input AN14 |
| 引脚 36 | RE3 — I/O port E bit 3 / analog input AN15 |
| 引脚 37 | RE4 — I/O port E bit 4 / analog input AN16 |
| 引脚 38 | RE5 — I/O port E bit 5 / analog input AN17 |
| 引脚 39 | VSS — Ground reference |
| 引脚 40 | RF0 — I/O port F bit 0 |
| 引脚 41 | RF1 — I/O port F bit 1 |
| 引脚 42 | RF2 — I/O port F bit 2 |
| 引脚 43 | RF3 — I/O port F bit 3 |
| 引脚 44 | RF4 — I/O port F bit 4 |
典型应用
PIC32MX250F128DT-50I/TL 适用于 6 应用s: USB Audio Device, Industrial HMI with Graphics, Capacitive Touch Interface (mTouch), USB Barcode Scanner, Industrial Sensor Hub, IoT Edge Node with USB.
USB Audio Device
The PIC32MX250F128DT-50I/TL's integrated USB 2.0 full-speed OTG controller and dual I2S peripherals make it ideal for USB audio peripherals such as USB headsets, USB speakers, and USB microphones. The 50 MHz MIPS32 M4K core handles USB isochronous transfers plus audio decoding in software. With 128 KB Flash and 32 KB SRAM, the MCU easily fits USB audio class 1.0 firmware, descriptor tables, and small audio buffers. For best results, pair with a low-jitter crystal and 27-ohm USB termination resistors.
推荐
Industrial HMI with Graphics
The PIC32MX250F128DT-50I/TL is ideal for low-cost QVGA graphics HMI panels thanks to its integrated Parallel Master Port (PMP) that drives TFT displays directly without external controllers. The 50 MHz core renders menus and widgets in real time while PMP offloads pixel data. Peripheral Pin Select (PPS) simplifies PCB routing of display data lines. 32 KB SRAM holds frame buffers for small icons; 128 KB Flash accommodates the graphics library and HMI firmware stack.
推荐
Capacitive Touch Interface (mTouch)
The PIC32MX250F128DT-50I/TL includes the CTMU peripheral for mTouch capacitive touch sensing, making it perfect for touch button panels and slider controls on appliances and industrial equipment. The 10-bit ADC with up to 28 channels combined with the CTMU delivers accurate capacitive measurements with sub-percent repeatability. The 32 KB SRAM and 128 KB Flash support touch firmware, gesture recognition, and visual feedback. Industrial temperature grade -40C to +85C supports harsh environments.
推荐
USB Barcode Scanner
The PIC32MX250F128DT-50I/TL is well suited for handheld USB barcode scanners thanks to its 50 MHz MIPS M4K core, integrated USB device controller, and UART for camera or sensor modules. 128 KB Flash accommodates decoding algorithms for 1D/2D barcodes, while 32 KB SRAM buffers scan lines. The 44-pin VTLA package fits compact scanner housings. With two UART peripherals, both the imaging sensor and external serial interface can be connected simultaneously.
推荐
Industrial Sensor Hub
The PIC32MX250F128DT-50I/TL works as an industrial sensor hub, reading analog sensors via its 10-bit 1 Msps ADC with up to 28 channels and forwarding data via UART, I2C, or USB. The 5 timers handle periodic sampling at precise intervals. With 32 KB SRAM, the MCU can aggregate readings from multiple sensors before forwarding to a host controller. Operating voltage of 2.3V to 3.6V and industrial temperature grade make it rugged for factory automation.
推荐
IoT Edge Node with USB
The PIC32MX250F128DT-50I/TL is suited for IoT edge nodes that use USB for power and connectivity. The USB OTG controller supports device-mode operation for charging and data. The 50 MHz MIPS M4K core and 32 KB SRAM can run small MQTT-style protocols, while the 128 KB Flash accommodates secure firmware. Two I2C ports connect to environmental sensors; two UARTs interface with cellular or BLE modules. The CTMU supports capacitive wake-up buttons for low-power operation.
推荐
推荐产品汇总
工程参考数据： PIC32MX250F128DT-50I/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 | PIC32MX250F128D-50I/TL | PIC32MX250F128D-50I/ML | PIC32MX230F128DT-50I/TL | PIC32MX170F256DT-50I/TL | PIC32MX150F128DT-50I/TL |
|---|---|---|---|---|---|---|
| Package | 44-VTLA (6x6 mm) | 44-VTLA (6x6 mm) - same | 44-QFN (8x8 mm) - different | 44-VTLA (6x6 mm) - same | 44-VTLA (6x6 mm) - same | 44-VTLA (6x6 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core | MIPS32 M4K 32-bit | MIPS32 M4K 32-bit | MIPS32 M4K 32-bit | MIPS32 M4K 32-bit | MIPS32 M4K 32-bit | MIPS32 M4K 32-bit |
| Max CPU Frequency | 50 MHz | 50 MHz | 50 MHz | 50 MHz | 50 MHz | 50 MHz |
| Flash | 128 KB | 128 KB | 128 KB | 256 KB (2x) | 128 KB | 256 KB (2x) |
| SRAM | 32 KB | 32 KB | 32 KB | 64 KB (2x) | 32 KB | 64 KB (2x) |
| USB | USB 2.0 FS OTG | USB 2.0 FS OTG | USB 2.0 FS OTG | USB 2.0 FS Device | USB 2.0 FS Device | USB 2.0 FS Device/Host |
| PMP (Graphics) | Yes | Yes | No | No | No | No |
| ADC Channels | 28 | 28 | 28 | 28 | 28 | 28 |
| Operating Voltage | 2.3V to 3.6V | 2.3V to 3.6V | 2.3V to 3.6V | 2.3V to 3.6V | 2.3V to 3.6V | 2.3V to 3.6V |
关键差异点
- Integrated PMP graphics interface （对比 PIC32MX230F128DT-50I/TL)
- 50 MHz CPU speed in industrial grade （对比 PIC32MX250F128D-I/PT (40 MHz))
- Compact 6x6 mm VTLA package （对比 PIC32MX250F128D-I/PT (TQFP-44 10x10 mm))
设计说明
The PIC32MX250F128DT-50I/TL operates from 2.3V to 3.6V and requires multiple bulk capacitors for stable operation. Place a 10uF tantalum or ceramic capacitor on each VDD pin pair plus a 0.1uF ceramic decoupling capacitor within 5 mm of every VDD pin. A 10uF bulk capacitor on the VBUS rail with a ferrite bead is recommended when powering from USB. For noise-sensitive analog circuits, use a separate LDO to feed AVdd.
Estimated: with the 44-pin VTLA (6x6 mm) package, allocate at least 4 layer PCB with continuous ground plane beneath the MCU. Keep USB D+/D- traces matched to 90 ohms differential, less than 50 mm long, and isolated from switching signals. Place the 12 MHz crystal or external oscillator within 5 mm of the OSC1/OSC2 pins with short traces and a guard ring. The exposed thermal pad must be soldered to a 5x5 mm copper pour connected to VSS for heat dissipation.
Avoid configuring I/O pins as analog inputs without disabling the digital input buffer - this adds parasitic current. When using USB, ensure the VBUS sense pin is monitored before driving D+/D- to avoid back-powering. The Peripheral Pin Select (PPS) registers must be unlocked before configuration; lock them after to prevent accidental changes. Never exceed the 3.6V absolute maximum on any I/O pin or permanent damage will occur.
合规信息
RoHS compliant per Microchip product page. Not AEC-Q100 qualified - this part targets industrial/commercial applications, not automotive. Halogen-free per Microchip environmental compliance data.