PIC32MX250F128D-V/PT - 32-bit MCU, 128KB Flash, USB, TQFP-44 | Microchip
MPN： PIC32MX250F128D-V/PT ✓ 啟用中PIC32MX250F128D-V/PT 概覽
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory (Flash), volatile working memory (SRAM), and a rich set of programmable peripherals onto a single die. The PIC32MX2xx family sits in Microchip's PIC32 hierarchy (PIC32 -> 32-bit MIPS MCU -> PIC32MX1XX/2XX sub-family), targeting low-power USB-enabled connected embedded designs at 0.5 mA/MHz running current and supporting mTouch capacitive touch sensing with 1 ns Input Capture time-stamp resolution.
Key features include a MIPS32 M4K core delivering up to 83 DMIPS, a 10-bit ADC with up to 1 Msps, five 16-bit and two 32-bit timers, RTCC with calendar mode, an integrated temperature sensor, and supply voltage range of 2.3 V to 3.6 V. The PIC32MX250F128D-V/PT also includes mTouch capacitive touch hardware support, JTAG boundary scan, and a Parallel Master Port that enables direct connection to graphics LCDs and external memory buses.
The architecture combines the MIPS M4K Harvard pipeline with Microchip's peripheral integration philosophy, giving developers deterministic interrupt latency, hardware PMP for bus-mastered graphics, and a programmable Peripheral Pin Select block that allows most digital peripherals to be remapped onto almost any digital I/O pin. USB 2.0 full-speed OTG is provided on-chip, eliminating the need for an external PHY in many low-speed USB designs and shortening USB-certified firmware development cycles.
Typical applications include USB audio class devices, mTouch capacitive touch user interfaces with on-screen graphics, low-cost embedded web servers, industrial control panels, and consumer electronics with LCD displays and USB connectivity. The wide operating temperature range and integrated analog make it well-suited for mixed-signal embedded products in industrial environments.
When designing with this device, allocate sufficient PCB area for the USB DP/DM trace impedance (90 ohm differential) and place the decoupling capacitors as close to the VDDCORE pin as possible. Ensure the firmware enables the proper PLL configuration for 40 MHz operation, and consider using the MPLAB Harmony framework to shorten audio and USB stack integration time.
This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes that are not aggregated on the Microchip datasheet alone, helping procurement engineers shorten the qualification cycle.
直接替換替代品，適用於 PIC32MX250F128D-V/PT — 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： PIC32MX250F128D-V/PT （相同外形與佔位） — 差異在於 ADC, Package, Timers, Operating Temperature, Mounting Type.
PIC32MX250F128D-I/PT
✅ 直接替換聯絡詢價
查看資料表 →PIC32MX250F128D-50I/PT
✅ 直接替換聯絡詢價
查看資料表 →PIC32MX230F128D-V/PT
✅ 直接替換📋 參考替代品（不在目錄中）
PIC32MX170F256D-V/PT
✅ 直接替換聯絡詢價
查看資料表 →PIC32MX230F256D-50I/PT
✅ 直接替換聯絡詢價
查看資料表 →PIC32MX154F128D-V/PT
✅ 直接替換📋 參考替代品（不在目錄中）
PIC32MX250F128D-V/PT 最大額定值與電氣特性
| Core Architecture | MIPS32 M4K |
| Maximum CPU Speed | 40 MHz (50 MHz / 83 DMIPS family cap) |
| Program Memory (Flash) | 128 KB |
| Data Memory (SRAM) | 32 KB |
| Supply Voltage (VDD) | 2.3 V to 3.6 V |
| I/O Pins | 34 |
| 封裝 | 44-pin TQFP (PT), 10x10 mm, 0.8 mm pitch |
| USB | USB 2.0 full-speed device / host / OTG |
| SPI / I2S Modules | 2 |
| I2C Modules | 2 |
| UART Modules | 2 |
| ADC | 10-bit, up to 1 Msps |
| Timers | Five 16-bit and two 32-bit |
| 工作溫度範圍 | -40C to +105C (V grade) |
| RoHS 狀態 | Compliant |
| 安裝類型 | Surface Mount (TQFP) |
PIC32MX250F128D-V/PT 腳位配置
| 腳位 1 | RPB7/USBID/RB7 — Remappable I/O / USB ID (pin 1 marker) |
| 腳位 2 | VDD — Supply voltage |
| 腳位 3 | RPB8/USBVBUS/RB8 — Remappable I/O / USB VBUS sense |
| 腳位 4 | VSS — Ground |
| 腳位 5 | RPC6/PMA1/RC6 — Remappable I/O / PMP address 1 |
| 腳位 6 | RPC7/PMA0/RC7 — Remappable I/O / PMP address 0 |
| 腳位 7 | RPC8/PMA2/RC8 — Remappable I/O / PMP address 2 |
| 腳位 8 | RPC9/REFO/RC9 — Remappable I/O / reference oscillator output |
| 腳位 9 | VSS — Ground |
| 腳位 10 | VDD — Supply voltage |
| 腳位 11 | RPC10/PMCS1/PMA3/RC10 — Remappable I/O / PMP chip select 1 |
| 腳位 12 | RPG6/SCK2/PMA4/RG6 — Remappable I/O / SPI2 clock |
| 腳位 13 | RPG7/SDA2/PMA5/RG7 — Remappable I/O / I2C2 data |
| 腳位 14 | RPG8/SCL2/PMA6/RG8 — Remappable I/O / I2C2 clock |
| 腳位 15 | RPG9/PMA7/RG9 — Remappable I/O / PMP address 7 |
| 腳位 16 | VSS — Ground |
| 腳位 17 | VDD — Supply voltage |
| 腳位 18 | RPF0/PMD0/RF0 — Remappable I/O / PMP data 0 |
| 腳位 19 | RPF1/PMD1/RF1 — Remappable I/O / PMP data 1 |
| 腳位 20 | RPF2/PMD2/RF2 — Remappable I/O / PMP data 2 |
| 腳位 21 | RPF3/PMD3/RF3 — Remappable I/O / PMP data 3 |
| 腳位 22 | RPF4/PMD4/RF4 — Remappable I/O / PMP data 4 |
| 腳位 23 | RPF5/PMD5/RF5 — Remappable I/O / PMP data 5 |
| 腳位 24 | RPF6/PMD6/RF6 — Remappable I/O / PMP data 6 |
| 腳位 25 | RPF7/PMD7/RF7 — Remappable I/O / PMP data 7 |
| 腳位 26 | RPF8/PMD8/RF8 — Remappable I/O / PMP data 8 |
| 腳位 27 | VSS — Ground |
| 腳位 28 | VDD — Supply voltage |
| 腳位 29 | OSC1/CLKI/RA12 — Crystal oscillator input / clock input |
| 腳位 30 | OSC2/CLKO/RA13 — Crystal oscillator output / clock output |
| 腳位 31 | SOSCI/RPC13/RC13 — Secondary oscillator input |
| 腳位 32 | SOSCO/RPC14/RC14 — Secondary oscillator output |
| 腳位 33 | VCAP/VDDCORE — Core voltage decoupling cap |
| 腳位 34 | RPB5/RB5 — Remappable I/O |
| 腳位 35 | RPB4/RB4 — Remappable I/O |
| 腳位 36 | RPB3/RB3 — Remappable I/O |
| 腳位 37 | RPB2/CTED1/RB2 — Remappable I/O / CTMU |
| 腳位 38 | RPB1/CTED0/RB1 — Remappable I/O / CTMU |
| 腳位 39 | RPB0/PGED1/RB0 — Remappable I/O / programming data |
| 腳位 40 | RPB6/PGEC1/RB6 — Remappable I/O / programming clock |
| 腳位 41 | RPB9/USBDP/RB9 — Remappable I/O / USB D+ |
| 腳位 42 | RPB10/USBDM/RB10 — Remappable I/O / USB D- |
| 腳位 43 | RPB11/RB11 — Remappable I/O |
| 腳位 44 | RPB12/RB12 — Remappable I/O |
典型應用
PIC32MX250F128D-V/PT 適用於 6 應用s: USB Audio Device (Headset / Microphone), Capacitive Touch HMI Panel (mTouch), Embedded Web Server / IoT Gateway, Industrial Control Panel with Graphics LCD, USB Barcode Scanner / HID Device, Portable Data Logger with USB Mass Storage.
USB Audio Device (Headset / Microphone)
The PIC32MX250F128D-V/PT's USB 2.0 full-speed OTG and dual I2S modules make it ideal for USB headset and microphone designs. The on-chip 10-bit ADC plus external audio codec support delivers 8 kHz to 48 kHz sample rates while the 128 KB Flash accommodates USB audio class firmware plus DSP routines. Its 0.5 mA/MHz active current keeps battery drain low, and the 32 KB SRAM buffers stereo 16-bit audio at 48 ksps without dropouts.
推薦
Capacitive Touch HMI Panel (mTouch)
With CTMU hardware, 1 ns Input Capture resolution, and up to 34 I/O pins, the PIC32MX250F128D-V/PT supports up to 28 mTouch electrodes for buttons, sliders, and proximity sensors. The mTouch library and Microchip's noise-robust firmware reference designs enable designs that pass IEC 61000-4-6 conducted immunity. Combined with PMP-driven LCD graphics, this part delivers a complete touch-and-display HMI in a single TQFP-44 footprint.
推薦
Embedded Web Server / IoT Gateway
The PIC32MX250F128D-V/PT integrates USB device/host with Ethernet-ready peripherals via SPI (for ENC28J60 or W5500), making it well suited to low-cost IPv4 web servers and IoT gateways. Its 128 KB Flash stores the Microchip Harmony TCP/IP stack plus a custom web UI, while 32 KB SRAM holds HTTP buffers and socket descriptors. The MIPS M4K core executes the network stack efficiently at 40 MHz.
推薦
Industrial Control Panel with Graphics LCD
The PIC32MX250F128D-V/PT's Parallel Master Port (PMP) directly drives small TFT/STN graphics LCDs without an external controller IC, saving BOM cost. With 34 GPIO, 5x 16-bit timers, and 2x 32-bit timers, it handles quadrature encoder inputs and PWM outputs concurrently. The V temperature grade (-40C to +105C) supports factory-floor environments above industrial -40C to +85C.
推薦
USB Barcode Scanner / HID Device
The PIC32MX250F128D-V/PT's USB full-speed HID class support enables drop-in barcode scanner designs that enumerate as a USB keyboard. With 128 KB Flash, the firmware can include 1D/2D decode libraries plus vendor-specific extensions. The 40 MHz core decodes typical 2D barcode patterns in under 50 ms, while the 32 KB SRAM holds image frames from the CMOS sensor over UART or SPI.
推薦
Portable Data Logger with USB Mass Storage
The PIC32MX250F128D-V/PT's USB device + PMP + 32 KB SRAM combination supports portable data loggers that present as USB mass storage when connected to a host PC. Use the RTCC for timestamped logging, the 10-bit ADC for analog sensor inputs, and external SPI Flash for bulk storage. The low 0.5 mA/MHz active current extends battery life in field deployments.
推薦
推薦產品摘要
工程參考資料，適用於 PIC32MX250F128D-V/PT — 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 | PIC32MX250F128D-I/PT | PIC32MX250F128D-50I/PT | PIC32MX230F128D-V/PT | PIC32MX170F256D-V/PT | PIC32MX230F256D-50I/PT | PIC32MX154F128D-V/PT |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | TQFP-44 (10x10 mm) | TQFP-44 (same) | TQFP-44 (same) | TQFP-44 (same) | TQFP-44 (same) | TQFP-44 (same) | TQFP-44 (same) |
| Maximum CPU Speed | 40 MHz | 40 MHz | 50 MHz | 40 MHz | 50 MHz | 50 MHz | 40 MHz |
| Flash Memory | 128 KB | 128 KB | 128 KB | 128 KB | 256 KB | 256 KB | 128 KB |
| SRAM | 32 KB | 32 KB | 32 KB | 16 KB | 32 KB | 32 KB | 32 KB |
| USB | USB 2.0 FS OTG | USB 2.0 FS OTG | USB 2.0 FS OTG | USB 2.0 FS OTG | USB 2.0 FS OTG | USB 2.0 FS OTG | No USB |
| Operating Temperature | -40C to +105C (V grade) | -40C to +85C (I grade) | -40C to +85C (I grade) | -40C to +105C (V grade) | -40C to +105C (V grade) | -40C to +85C (I grade) | -40C to +105C (V grade) |
| I/O Pins | 34 | 34 | 34 | 34 | 34 | 34 | 34 |
主要差異化特點
- Wide operating temperature range (V grade) (對比PIC32MX250F128D-I/PT)
- Same TQFP-44 footprint with higher performance (對比PIC32MX250F128D-50I/PT)
- More SRAM than 230-family alternative (對比PIC32MX230F128D-V/PT)
設計說明
Route the USB DP (pin 41) and DM (pin 42) lines as a 90-ohm differential pair with matched length, keeping traces short and isolated from digital switching signals. Place the USB ESD protection array within 5 mm of the connector. According to Microchip's USB design guidelines, add a 15 kohm pull-down on the USBID pin (pin 1) for proper OTG role detection.
Place a 10 uF ceramic decoupling capacitor and a 100 nF ceramic capacitor as close as possible to each VDD/VSS pair (pins 2/4, 10/9, 17/16, 28/27, plus 44/8 power pair). The VCAP/VDDCORE pin (pin 33) requires a single 10 uF low-ESR ceramic capacitor placed within 1 mm of the pin to stabilize the internal 1.8V regulator that powers the MIPS core.
When migrating firmware from PIC32MX250F128D-I/PT (40 MHz) to PIC32MX250F128D-50I/PT (50 MHz), verify the PLL configuration register and instruction timing loops. Peripheral clocks derived from PBCLK must be reconfigured to avoid baud-rate errors on UART and SPI. Always re-run USB stack compliance validation when changing CPU speed, as the 48 MHz USB clock derivation is dependent on PLL stability.
Estimated: At 40 MHz with all peripherals active at 3.3V, the PIC32MX250F128D-V/PT draws approximately 20 mA, dissipating around 66 mW of power. With the TQFP-44 thermal resistance of approximately 50 C/W (typical 4-layer JEDEC JESD51 test board), the junction temperature rise above ambient is roughly 3.3C - well within the 105C V-grade limit and generally requiring no thermal management beyond standard PCB copper pour.
合規資訊
RoHS and REACH compliant per Microchip product page. AEC-Q100 not applicable - this part targets industrial/consumer markets; choose PIC32MX250F128D-I/PT variants with automotive screening where required. Halogen-free status not explicitly stated in provided data.
