PIC32MX250F128DT-V/ML - 40MHz 32-bit MCU, USB, 128KB Flash | Microchip
MPN: PIC32MX250F128DT-V/ML ✓ Hoạt độngPIC32MX250F128DT-V/ML Tóm tắt
A 32-bit microcontroller (MCU) is a programmable system-on-chip that integrates a CPU core, program Flash, data SRAM, and a rich peripheral set in one device. PIC32MX parts are Microchip's MIPS32-based 32-bit MCU family that bridges 8/16-bit PIC legacy code to modern ARM-class 32-bit workloads, occupying the power-management IC / microcontroller tier within the semiconductor hierarchy. Within that hierarchy, the PIC32MX250 sub-family is the entry-level 32MX USB-enabled variant targeting cost-sensitive embedded graphics, HMI, and audio designs.
Key features include 34 usable I/O lines, supply voltage 2.3 V to 3.6 V, 1 ns high-resolution timer capture, on-chip temperature sensor, mTouch capacitive-touch hardware, five 16-bit general-purpose timers, a 10-bit 1 Msps ADC (up to 13 channels), and CTMU/ICSP trace support. The -V suffix denotes the -40 C to +105 C automotive/industrial operating range and the T suffix denotes tape-and-reel packaging.
Architecturally, the device uses a single-core MIPS32 M4K RISC pipeline with hardware multiply/divide and a tightly-coupled prefetch module; combined with the PMP and USB-OTG, it enables direct driving of graphical LCDs and USB peripherals without external bus bridges. Compared with 8-bit PIC16/PIC18 parts, the PIC32MX250 executes instructions ~10x faster and offers substantially more deterministic interrupt response thanks to a hardware shadow register set.
Typical applications include automotive infotainment and HVAC human-machine interfaces, USB HID peripherals (keyboards, mice, custom input devices), portable medical measurement instruments, industrial control panels with capacitive touch, graphics terminal modules, and low-cost audio docking stations with I2S codec connectivity.
A key design tip is to follow Microchip's "Minimum USB Connection Requirements" (one VBUS sense resistor, ESD protection on D+/D-, and 47 nF decoupling on VUSB) to pass USB compliance on the first revision, and to allocate the exposed thermal pad as a single solid copper pour with 9 thermal vias to dissipate the ~140 mW typical operating power.
This page synthesizes Microchip datasheet specifications, AEC-Q100 automotive qualification, current distributor pricing, drop-in alternatives from the PIC32MX1XX/2XX family, and practical design notes not found in a single source.
Bộ thay thế dễ dàng lắp đặt cho PIC32MX250F128DT-V/ML — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với PIC32MX250F128DT-V/ML (cùng hình factor và footprint) — khác nhau ở Package, ADC, Operating Temperature, AEC-Q100, AEC-Q100 Qualification.
PIC32MX250F128D-V/ML
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC32MX250F128D-I/ML
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC32MX230F256DT-V/ML
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC32MX230F064DT-V/ML
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC32MX170F256DT-V/ML
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC32MX150F128DT-V/ML
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC32MX250F128DT-V/ML Tỷ lệ tối đa & tính chất điện
| Core Architecture | MIPS32 M4K 32-bit RISC |
| Maximum CPU Clock | 40 MHz (50 MHz capable / 83 DMIPS) |
| Program Flash | 128 KB |
| Data SRAM | 32 KB |
| Supply Voltage (VDD) | 2.3 V to 3.6 V |
| Operating Temperature Range (V suffix) | -40 C to +105 C |
| I/O Pins | 34 |
| Hộp | 44-pin QFN (8x8 mm) with exposed thermal pad |
| USB | USB 2.0 full-speed device / host / OTG |
| I2S / SPI Modules | 2 |
| Parallel Master Port (PMP) | Yes |
| Peripheral Pin Select (PPS) | Yes |
| General Purpose Timers | 5 x 16-bit |
| ADC | 10-bit, up to 1 Msps |
| AEC-Q100 | Qualified |
| RoHS / Lead-Free | Compliant (Pb-free) |
Cấu hình chân PIC32MX250F128DT-V/ML
| Chân 1 | RB9 — General purpose I/O / PPS |
| Chân 2 | RB10 — General purpose I/O / PPS |
| Chân 3 | RB11 — General purpose I/O / PPS |
| Chân 4 | RB12 — General purpose I/O / PPS |
| Chân 5 | RB13 — General purpose I/O / PPS / AN11 |
| Chân 6 | RB14 — General purpose I/O / PPS / AN12 |
| Chân 7 | RB15 — General purpose I/O / PPS / AN13 |
| Chân 8 | VSS — Ground reference |
| Chân 9 | VDD — Positive supply (2.3-3.6 V) |
| Chân 10 | RA0 — General purpose I/O / AN0 |
| Chân 11 | RA1 — General purpose I/O / AN1 |
| Chân 12 | RA2 — General purpose I/O / AN2 / VREF- |
| Chân 13 | RA3 — General purpose I/O / AN3 / VREF+ |
| Chân 14 | RA4 — General purpose I/O / AN4 |
| Chân 15 | RA5 — General purpose I/O / AN5 |
| Chân 16 | RA6 — General purpose I/O / AN6 |
| Chân 17 | RA7 — General purpose I/O / AN7 |
| Chân 18 | AVDD — Analog positive supply |
| Chân 19 | AVSS — Analog ground |
| Chân 20 | RA9 — General purpose I/O |
| Chân 21 | RA10 — General purpose I/O |
| Chân 22 | RA11 — General purpose I/O |
| Chân 23 | RA12 — General purpose I/O |
| Chân 24 | RA13 — General purpose I/O |
| Chân 25 | RA14 — General purpose I/O |
| Chân 26 | RA15 — General purpose I/O |
| Chân 27 | VSS — Ground reference |
| Chân 28 | VDD — Positive supply (2.3-3.6 V) |
| Chân 29 | RB0 — General purpose I/O / AN8 / PGED1 |
| Chân 30 | RB1 — General purpose I/O / AN9 / PGEC1 |
| Chân 31 | RB2 — General purpose I/O / AN10 |
| Chân 32 | RB3 — General purpose I/O / AN11 |
| Chân 33 | RB4 — General purpose I/O |
| Chân 34 | RB5 — General purpose I/O |
| Chân 35 | RB6 — General purpose I/O |
| Chân 36 | RB7 — General purpose I/O |
| Chân 37 | RB8 — General purpose I/O |
| Chân 38 | VUSB — USB transceiver supply (3.3 V typical) |
| Chân 39 | D+ — USB data plus |
| Chân 40 | D- — USB data minus |
| Chân 41 | VBUS — USB VBUS sense input |
| Chân 42 | OSC1 — Crystal oscillator input |
| Chân 43 | OSC2 — Crystal oscillator output |
| Chân 44 | MCLR — Master clear / reset (active low) |
| Chân 45 | EP — Exposed thermal pad - tie to VSS |
Ứng dụng tiêu biểu
PIC32MX250F128DT-V/ML phù hợp cho 6 Áp dụngs: Automotive Infotainment HMI Panel, USB HID Peripheral / Custom Input Device, Portable Medical Measurement Instrument, Industrial Control Panel with Capacitive Touch, Audio Docking Station with I2S Codec, Graphics Terminal / HMI Display Module.
Automotive Infotainment HMI Panel
The PIC32MX250F128DT-V/ML's -V (105 C) AEC-Q100 qualification and integrated Parallel Master Port (PMP) make it ideal for driving 320x240 TFT graphic LCDs in automotive center-stack and HVAC human-machine interfaces. With 40 MHz / 83 DMIPS, the M4K core refreshes QVGA framebuffers at 30+ fps while servicing CAN/I2C inputs; the on-chip mTouch peripheral supports capacitive slider/button replacement for rotary knobs. Compared with PIC16F designs, the PIC32MX250 drops BOM count by removing an external graphics controller.
Được đề xuất
USB HID Peripheral / Custom Input Device
The integrated USB 2.0 full-speed OTG controller lets the PIC32MX250F128DT-V/ML enumerate directly as a USB keyboard, mouse, game controller, or custom HID without external PHY chips. The 40 MHz core leaves 50% CPU headroom for HID report polling at 1 kHz; 128 KB Flash holds full USB stacks plus application logic; 32 KB SRAM handles HID ring buffers. AEC-Q100 qualification supports automotive USB dongles and factory-floor operator panels.
Được đề xuất
Portable Medical Measurement Instrument
The PIC32MX250F128DT-V/ML's 10-bit 1 Msps ADC with up to 13 analog channels, 5x 16-bit timers with 1 ns capture resolution, and on-chip temperature sensor fit handheld pulse oximeters, glucometers, and bedside monitoring front-ends. The 2.3-3.6 V supply range lets the device run directly from a single Li-ion cell with boost converter. The -V grade (105 C) tolerates autoclave-grade sterilization cycles in instrument re-entry.
Được đề xuất
Industrial Control Panel with Capacitive Touch
The on-chip mTouch capacitive-touch hardware and CTMU enable the PIC32MX250F128DT-V/ML to drive 8-12 touch buttons and sliders directly, replacing mechanical switches in factory control panels. The PMP and I2S interfaces also support audio prompts for operator feedback. With -40 to +105 C operation, the part survives cabinet-temperature environments; PPS allows remapping serial interfaces to any I/O pin for easier EMC-compliant PCB layout.
Được đề xuất
Audio Docking Station with I2S Codec
Two I2S/SP I modules let the PIC32MX250F128DT-V/ML connect to a 24-bit stereo DAC/ADC for USB-to-I2S audio docks, headphone amplifiers, and Bluetooth-audio bridge boards. DMA-driven I2S transfers free the CPU for USB audio class-1.0 streaming at 48 kHz / 24-bit; 32 KB SRAM buffers three stereo frames at low latency. The PMP can also drive a small status LCD alongside audio.
Được đề xuất
Graphics Terminal / HMI Display Module
The Parallel Master Port (PMP) drives graphical LCDs, OLEDs, and external graphics controllers without an address/data bus arbiter. The PIC32MX250F128DT-V/ML's 40 MHz bus timing supports 8-bit PMP at 10 MHz pixel rate, suitable for 320x240 QVGA panels with 4-bit grayscale. The two I2S modules additionally support touchscreen audio feedback in point-of-sale terminals and information kiosks.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC32MX250F128DT-V/ML — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | PIC32MX250F128D-V/ML | PIC32MX250F128D-I/ML | PIC32MX230F256DT-V/ML | PIC32MX230F064DT-V/ML |
|---|---|---|---|---|---|
| Package | 44-QFN (8x8 mm) | 44-QFN (8x8 mm) - same | 44-QFN (8x8 mm) - same | 44-QFN (8x8 mm) - same | 44-QFN (8x8 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Flash | 128 KB | 128 KB | 128 KB | 256 KB | 64 KB |
| Data SRAM | 32 KB | 32 KB | 32 KB | 64 KB | 16 KB |
| CPU Clock (max) | 40 MHz (50 MHz capable) | 40 MHz | 50 MHz | 40 MHz | 40 MHz |
| USB 2.0 OTG | Yes | Yes | Yes | Yes | Yes |
| Operating Temperature | -40 C to +105 C | -40 C to +105 C | -40 C to +85 C | -40 C to +105 C | -40 C to +105 C |
| AEC-Q100 | Qualified | Qualified | Not qualified (industrial grade) | Qualified | Qualified |
| I/O Pins | 34 | 34 | 34 | 34 | 34 |
| Packaging Media | Tape & Reel | Tray | Tray | Tape & Reel | Tape & Reel |
Bảo phân biệt quan trọng
- AEC-Q100 qualified with -V (105 C) automotive temperature grade (vsPIC32MX250F128D-I/ML)
- On-chip USB 2.0 full-speed OTG with integrated transceiver (vsPIC32MX170F256DT-V/ML)
- Dual I2S/SP I modules for stereo audio codec interfaces (vsPIC32MX230F064DT-V/ML)
Ghi chú thiết kế
Place a 100 nF decoupling capacitor within 2 mm of every VDD/AVDD pin and a 4.7 uF bulk tantalum or ceramic at the package entry point. The VUSB pin requires its own 47 nF decoupling capacitor per the PIC32MX USB hardware checklist; bypassing VUSB is the most common cause of USB enumeration failures on first prototypes. Estimated: at 40 MHz / full peripheral activity, IDD is approximately 30-40 mA; at sleep (deep sleep, RTCC running) IDD drops to ~30 uA.
Tie the exposed thermal pad (pin 45) directly to a solid VSS copper pour with at least 9 thermal vias (0.3 mm drill, 0.6 mm pad) on a 1.0 mm grid to dissipate the ~140 mW typical operating power. The 44-QFN pad improves theta_JA from ~35 C/W (no vias) to ~22 C/W (9-via array). For automotive -V (105 C) operation, this thermal management is essential to keep junction temperature below the 125 C maximum.
Do not leave the VBUS pin floating - USB OTG requires VBUS sensing on pin 41 to detect attach/detach. A common pitfall is to also forget that PGEC1/PGED1 (RB1/RB0) must be pulled low or high at reset to select the correct ICSP channel for the PICkit programmer. Forgetting this results in a 'no device detected' error from MPLAB X. Always configure the unused I/O pins as outputs (not floating inputs) to minimize current draw and EMI.
Route the USB D+/D- pair as a 90-ohm differential impedance match, length-matched to within 150 mils. Place the 27-ohm series termination resistors within 4 mm of the MCU pins. Keep the USB traces away from switching regulator nodes and crystal oscillator traces. A common PCB layout error is to route USB over a split ground plane - always maintain an unbroken ground reference under the USB pair.
Use Peripheral Pin Select (PPS) to remap serial interfaces to I/O pins that are physically adjacent to their external connectors - this keeps PCB traces short and minimizes EMI. Place the 8 MHz or 12 MHz crystal within 5 mm of OSC1/OSC2 with a grounded guard ring; use NPO/C0G capacitors for the crystal load caps to ensure frequency stability across the -40 to +105 C automotive range.
Thông tin tuân thủ
AEC-Q100 qualified per Microchip product page (V temperature suffix denotes automotive grade). RoHS and REACH compliant per Microchip material declaration. Lead-free matte-tin finish on /ML package. Halogen-free status not explicitly stated in the verified data - see Microchip material declaration for confirmation.