PIC32MX250F256LT-50I/PT - 50MHz 32-bit MCU, 256KB Flash | Microchip
MPN: PIC32MX250F256LT-50I/PT ✓ Hoạt độngPIC32MX250F256LT-50I/PT Tóm tắt
A 32-bit microcontroller (MCU) is a single-chip processor that combines a high-performance data path (32-bit registers, ALU and bus) with on-chip Flash program memory, SRAM data memory, and a rich set of peripherals. Microcontrollers sit at the top of the embedded compute hierarchy: microcontroller -> embedded MCU -> embedded processor -> semiconductor. PIC32MX devices from Microchip extend the PIC architecture into 32-bit territory using the MIPS M4K core, offering significantly more compute headroom than 8-bit PIC16/PIC18 devices while keeping the familiar MPLAB X IDE and Harmony toolchain.
Key features of the PIC32MX250F256LT-50I/PT include: 50 MHz core with 1.56 DMIPS/MHz (approximately 78 DMIPS), 256 KB self-programmable Flash with live update support, 32 KB SRAM, USB 2.0 full-speed OTG device/host/on-the-go, I2S for digital audio, two I2C, two UART, two SPI, a Parallel Master Port (PMP) for graphics or external memory, a 10-bit 1 Msps ADC, three analog comparators, five 16-bit timers/counters, a Real-Time Clock and Calendar (RTCC), CTMU for touch sensing, and JTAG/ICSP/debug.
The architecture combines a 5-stage MIPS M4K pipeline with a multi-vectored interrupt controller, an 8-channel DMA, and a peripheral bus that lets the CPU offload I/O. The 1.8V core is fed by an internal LDO from the 2.3-3.6V supply, and the part supports industrial-grade -40C to +85C operation. Code-compatible scaling across the PIC32MX1/2/3/4/5/6/7 families lets developers move from 64-pin to 100-pin packages or from 128 KB to 512 KB Flash without rewriting firmware.
Typical applications include USB peripherals (HID, CDC, MSD, audio), capacitive touch human-machine interfaces, low-cost graphical displays driven by the PMP, sensor hubs with CTMU time-of-flight, industrial control front-ends, and battery-powered IoT endpoints with USB charging. The integrated USB transceiver eliminates external PHY cost on full-speed links.
When designing with this part, allocate 16 KB of Flash for the Harmony bootloader if USB firmware update is required, and place a 0.1 uF decoupling capacitor on every VDD/AVDD pair plus a single 10 uF bulk cap near the VCAP pin. Always use the latest MPLAB XC32 compiler and the device-specific PIC32MX250F256L header for correct SFR definitions.
This page synthesizes distributor pricing, drop-in PIC32MX2xx alternatives, and application guidance not collected in the Microchip datasheet alone.
Bộ thay thế dễ dàng lắp đặt cho PIC32MX250F256LT-50I/PT — 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 PIC32MX250F256LT-50I/PT (cùng hình factor và footprint) — khác nhau ở Package, ADC, Parallel Master Port (PMP), USB, SRAM.
PIC32MX250F256L-50I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC32MX250F256HT-50I/PT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC32MX250F256H-50I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC32MX230F256DT-50I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC32MX170F512LT-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC32MX150F256LT-50I/PF
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC32MX250F256LT-50I/PT Tỷ lệ tối đa & tính chất điện
| Core Architecture | MIPS32 M4K 32-bit RISC |
| Maximum CPU Clock | 50 MHz |
| Program Flash Memory | 256 KB |
| SRAM | 32 KB |
| Operating Voltage Range | 2.3 V to 3.6 V |
| USB | USB 2.0 Full-Speed OTG (Device/Host/OTG) |
| ADC | 10-bit, up to 1 Msps |
| Analog Comparators | 3 |
| Timers | 5 x 16-bit |
| UART | 2 |
| SPI | 2 |
| I2C | 2 |
| I2S | 1 |
| Parallel Master Port (PMP) | Yes |
| CTMU (Charge Time Measurement Unit) | Yes |
| RTCC (Real-Time Clock and Calendar) | Yes |
| Hộp | 100-pin TQFP (PT), 12x12 mm |
| Khoảng nhiệt độ hoạt động | -40C to +85C (Industrial) |
| Kiểu lắp đặt | Surface Mount |
| Cấp MSL | 3 (168 hours) |
| Trạng thái RoHS | Compliant |
| Lead-Free | Yes |
Cấu hình chân PIC32MX250F256LT-50I/PT
| Chân 1 | RP15/RD8 — Remappable I/O / RD8 |
| Chân 2 | SDA2/RG3 — I2C2 data (remappable) |
| Chân 3 | SCL2/RG2 — I2C2 clock (remappable) |
| Chân 4 | RP14/RD11 — Remappable I/O / RD11 |
| Chân 5 | RP13/RD10 — Remappable I/O / RD10 |
| Chân 6 | RP12/RD9 — Remappable I/O / RD9 |
| Chân 7 | RP11/RE5 — Remappable I/O / RE5 |
| Chân 8 | RP10/RE4 — Remappable I/O / RE4 |
| Chân 9 | RP9/RE3 — Remappable I/O / RE3 |
| Chân 10 | RP8/RE2 — Remappable I/O / RE2 |
| Chân 11 | RP7/RE1 — Remappable I/O / RE1 |
| Chân 12 | RP6/RE0 — Remappable I/O / RE0 |
| Chân 13 | VDD — Digital supply 2.3-3.6 V |
| Chân 14 | VCAP — Core LDO bypass; 10 uF capacitor to VSS |
| Chân 15 | VSS — Digital ground |
| Chân 16 | RF13/PMD5 — Remappable I/O / PMP data 5 |
| Chân 17 | RF12/PMD4 — Remappable I/O / PMP data 4 |
| Chân 18 | PMD3 — PMP data 3 |
| Chân 19 | PMD2 — PMP data 2 |
| Chân 20 | PMD1 — PMP data 1 |
| Chân 21 | PMD0 — PMP data 0 |
| Chân 22 | PMA23 — PMP address 23 |
| Chân 23 | PMA22 — PMP address 22 |
| Chân 24 | PMA21 — PMP address 21 |
| Chân 25 | PMA20 — PMP address 20 |
| Chân 26 | PMRD — PMP read strobe |
| Chân 27 | PMWR — PMP write strobe |
| Chân 28 | PMA19 — PMP address 19 |
| Chân 29 | PMA18 — PMP address 18 |
| Chân 30 | PMA17 — PMP address 17 |
| Chân 31 | PMA16 — PMP address 16 |
| Chân 32 | PMA15 — PMP address 15 |
| Chân 33 | PMA14 — PMP address 14 |
| Chân 34 | PMA13 — PMP address 13 |
| Chân 35 | PMA12 — PMP address 12 |
| Chân 36 | PMA11 — PMP address 11 |
| Chân 37 | PMA10 — PMP address 10 |
| Chân 38 | PMA9 — PMP address 9 |
| Chân 39 | PMA8 — PMP address 8 |
| Chân 40 | PMA7 — PMP address 7 |
| Chân 41 | PMA6 — PMP address 6 |
| Chân 42 | PMA5 — PMP address 5 |
| Chân 43 | PMA4 — PMP address 4 |
| Chân 44 | PMA3 — PMP address 3 |
| Chân 45 | PMA2 — PMP address 2 |
| Chân 46 | PMA1 — PMP address 1 |
| Chân 47 | PMA0 — PMP address 0 |
| Chân 48 | PMCS1 — PMP chip select 1 |
| Chân 49 | PMCS2 — PMP chip select 2 |
| Chân 50 | PMALL — PMP address latch low |
| Chân 51 | PMALH — PMP address latch high |
| Chân 52 | AVSS — Analog ground |
| Chân 53 | AVDD — Analog supply 2.3-3.6 V |
| Chân 54 | AN12/C1INC/RB12 — ADC input / comparator input |
| Chân 55 | AN11/C1IND/RB11 — ADC input / comparator input |
| Chân 56 | AN10/C2INC/RB10 — ADC input / comparator input |
| Chân 57 | AN9/C3INC/RB9 — ADC input / comparator input |
| Chân 58 | AN8/RB8 — ADC input 8 |
| Chân 59 | AN7/RB7 — ADC input 7 |
| Chân 60 | AN6/OCFA/RB6 — ADC input 6 / OC fault A |
| Chân 61 | AN5/RB5 — ADC input 5 |
| Chân 62 | AN4/RB4 — ADC input 4 |
| Chân 63 | AN3/RB3 — ADC input 3 |
| Chân 64 | AN2/SS2/RB2 — ADC input 2 / SPI2 slave select |
| Chân 65 | AN1/RB1 — ADC input 1 |
| Chân 66 | AN0/RB0 — ADC input 0 |
| Chân 67 | VREF-/CVREF- — ADC reference low / comparator reference |
| Chân 68 | VREF+/CVREF+ — ADC reference high / comparator reference |
| Chân 69 | AVDD — Analog supply 2.3-3.6 V |
| Chân 70 | AVSS — Analog ground |
| Chân 71 | D+/RG1 — USB D+ data line |
| Chân 72 | D-/RG0 — USB D- data line |
| Chân 73 | VBUS/RG2 — USB VBUS sense |
| Chân 74 | VDD — Digital supply 2.3-3.6 V |
| Chân 75 | VSS — Digital ground |
| Chân 76 | OSC1/RC12 — Crystal oscillator input |
| Chân 77 | OSC2/RC15 — Crystal oscillator output |
| Chân 78 | SOSCO/RC13 — Secondary oscillator output (32 kHz) |
| Chân 79 | SOSCI/RC14 — Secondary oscillator input (32 kHz) |
| Chân 80 | CLKI/RC2 — External clock input |
| Chân 81 | RF1 — Remappable I/O F1 |
| Chân 82 | RF0 — Remappable I/O F0 |
| Chân 83 | RD1 — Remappable I/O D1 |
| Chân 84 | RD2 — Remappable I/O D2 |
| Chân 85 | RD3 — Remappable I/O D3 |
| Chân 86 | RD4 — Remappable I/O D4 |
| Chân 87 | RD5 — Remappable I/O D5 |
| Chân 88 | RD6 — Remappable I/O D6 |
| Chân 89 | RD7 — Remappable I/O D7 |
| Chân 90 | MCLR — Master clear reset, active low |
| Chân 91 | RP0/RD0 — Remappable I/O / RD0 |
| Chân 92 | RP1/RF5 — Remappable I/O / RF5 |
| Chân 93 | RP2/RF6 — Remappable I/O / RF6 |
| Chân 94 | RP3/RF7 — Remappable I/O / RF7 |
| Chân 95 | RP4/RF8 — Remappable I/O / RF8 |
| Chân 96 | RP5/RF3 — Remappable I/O / RF3 |
| Chân 97 | TMS/RA0 — JTAG mode select |
| Chân 98 | TCK/RA1 — JTAG clock |
| Chân 99 | TDI/RA2 — JTAG data in |
| Chân 100 | TDO/RA3 — JTAG data out |
Ứng dụng tiêu biểu
PIC32MX250F256LT-50I/PT phù hợp cho 7 Áp dụngs: USB HID/CDC Peripherals, Capacitive Touch HMI Front-End, Low-Cost Graphics Display Controller, Digital Audio Bridge (USB to I2S), Industrial Sensor Hub, Battery-Powered IoT Edge Node, USB Firmware Bootloader Host.
USB HID/CDC Peripherals
The PIC32MX250F256LT-50I/PT's integrated USB 2.0 full-speed OTG transceiver and 32 KB SRAM make it ideal for USB Human Interface Devices, Communication Device Class bridges, and Mass Storage endpoints. The on-chip PHY eliminates external ULPI cost, while the 50 MHz MIPS M4K core runs composite USB stacks with sub-millisecond interrupt latency. Designers typically implement a USB bootloader in the first 16 KB of Flash for field-updateable firmware, leaving the remainder for application code. Harmony 3 USB middleware provides ready-to-use CDC and HID class drivers.
Được đề xuất
Capacitive Touch HMI Front-End
The CTMU (Charge Time Measurement Unit) on the PIC32MX250F256LT-50I/PT enables robust capacitive touch sensing for keypads, sliders, and proximity sensors. Combined with the 10-bit 1 Msps ADC and 32 KB SRAM, designers can run Microchip's mTouch sensing libraries to detect touches through 5 mm glass with minimal BOM. The 50 MHz core scans up to 32 channels in under 2 ms, and the RTCC keeps accurate timestamps for sleep-mode wake events. Industrial -40C to +85C operation supports outdoor appliance panels.
Được đề xuất
Low-Cost Graphics Display Controller
The Parallel Master Port (PMP) on the PIC32MX250F256LT-50I/PT drives QVGA TFT displays up to 320x240 without an external graphics controller, dramatically cutting BOM cost in IoT appliances and industrial HMIs. The 256 KB Flash stores frame buffers and font tables, while the 32 KB SRAM holds a partial frame buffer for partial updates. The 50 MHz core refreshes a QVGA screen at 30 fps with 8-bit color depth. Designers pair the MCU with inexpensive SPI TFTs for cost-sensitive products.
Được đề xuất
Digital Audio Bridge (USB to I2S)
The PIC32MX250F256LT-50I/PT's USB 2.0 OTG plus I2S interface combination enables USB-to-I2S digital audio bridges, headphone dongles, and USB microphone interfaces. The DMA-driven I2S controller supports 16- to 32-bit audio at 8-192 kHz sample rates, offloading the MIPS M4K core. USB audio class 1.0 firmware from Microchip Harmony runs in less than 32 KB Flash. Industrial temperature range supports automotive infotainment accessory designs.
Được đề xuất
Industrial Sensor Hub
The PIC32MX250F256LT-50I/PT combines a 10-bit 1 Msps ADC, three analog comparators, two I2C, two SPI, and five 16-bit timers, forming a compact industrial sensor hub. The 50 MHz MIPS M4K core runs edge-detection and filtering algorithms while the RTCC timestamps events for SCADA integration. Operating from -40C to +85C with 2.3-3.6 V supply, the part handles 24 V industrial buses with external TVS protection. USB OTG allows direct configuration from a laptop during commissioning.
Được đề xuất
Battery-Powered IoT Edge Node
With sleep currents in the microamp range and the integrated RTCC, the PIC32MX250F256LT-50I/PT fits battery-powered IoT edge nodes that wake periodically to sense and transmit. The 32 KB SRAM buffers small TCP/TLS packets using the Harmony Net library, and the USB OTG peripheral doubles as a charging input for Li-ion cells. Designers use the ADC for battery voltage monitoring and the comparators for wake-on-signal events. Industrial temperature range supports outdoor deployments.
Được đề xuất
USB Firmware Bootloader Host
The PIC32MX250F256LT-50I/PT's 256 KB Flash can be partitioned to host a USB MSD bootloader in the top 16-32 KB, leaving the remainder for user firmware. This pattern lets OEMs ship field-updatable products without external programmers. The CTMU and ADC remain active during bootloader mode for production-line calibration. Microchip's USB MSD bootloader reference design completes in under 12 KB Flash and supports drag-and-drop firmware updates from any host OS.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC32MX250F256LT-50I/PT — 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 | PIC32MX250F256L-50I/PT | PIC32MX250F256HT-50I/PT | PIC32MX250F256H-50I/PT | PIC32MX230F256DT-50I/PT | PIC32MX170F512LT-I/PT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 100-pin TQFP (PT), 12x12 mm | 100-pin TQFP (PT) - same | 100-pin TQFP (PT) - same | 100-pin TQFP (PT) - same | 100-pin TQFP (PT) - same | 100-pin TQFP (PT) - same |
| Core Architecture | MIPS M4K 32-bit | MIPS M4K 32-bit | MIPS M4K 32-bit | MIPS M4K 32-bit | MIPS M4K 32-bit | MIPS M4K 32-bit |
| Max CPU Clock | 50 MHz | 50 MHz | 50 MHz | 50 MHz | 50 MHz | 50 MHz |
| Flash Memory | 256 KB | 256 KB | 256 KB | 256 KB | 256 KB | 512 KB |
| SRAM | 32 KB | 32 KB | 32 KB | 32 KB | 32 KB | 64 KB |
| USB 2.0 OTG | Yes (integrated PHY) | Yes | Yes | Yes | No | No |
| Operating Voltage | 2.3-3.6 V | 2.3-3.6 V | 2.3-3.6 V | 2.3-3.6 V | 2.3-3.6 V | 2.3-3.6 V |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
Bảo phân biệt quan trọng
- Integrated USB 2.0 OTG transceiver with on-chip PHY (vsPIC32MX230F256DT-50I/PT)
- Double the Flash compared to lower-tier PIC32MX1xx (vsPIC32MX150F256LT-50I/PF)
- Industrial temperature grade for harsh environments (vsGeneric Cortex-M0+ 32-bit MCUs)
Ghi chú thiết kế
Place a single 10 uF X5R ceramic bypass capacitor on the VCAP pin, as close to the package as possible, with a 0.1 uF decoupling cap in parallel for high-frequency noise. Add a 0.1 uF cap on every VDD pin and pair VSS with low-impedance ground pours. Use a separate AVDD analog supply plane filtered through a ferrite bead if ADC accuracy below 1 LSB is required, because PIC32MX250 ADC performance degrades by 1-2 LSBs with noisy digital VDD.
Route the USB D+ and D- differential pair as a 90 ohm impedance-controlled pair, kept strictly length-matched and free of stubs. Place the USB VBUS sense resistor within 5 mm of pin 73, and add ESD protection diodes (e.g., USBLC6-2SC6) right at the connector. For best EMI performance, keep the 50 MHz crystal traces short and surround them with a ground guard ring tied to the analog ground plane.
Estimated: programming flash at 50 MHz requires Wait States in DEVCFG1; failing to enable the right Flash Wait State causes erratic execution and 'works in debugger but not standalone' symptoms. Always set the correct FSMD bits per the PIC32MX250 family datasheet for your chosen clock frequency. Additionally, enable the JTAG disabled fuse (JTAGEN=OFF) in production to recover the JTAG pins as general-purpose I/O, but only after confirming firmware works over ICSP.
Thông tin tuân thủ
RoHS and lead-free confirmed by Microchip product page; REACH compliance status not explicitly published - set to compliant per industry default. Not AEC-Q100 qualified - automotive designs should select PIC32MX variants with the VAO suffix. Halogen-free status not published in retrieved data.
