PIC32MX550F256LT-V/PT - 32-bit MCU 256KB Flash TQFP-100 | Microchip
MPN: PIC32MX550F256LT-V/PT ✓ Hoạt độngPIC32MX550F256LT-V/PT Tóm tắt
A 32-bit microcontroller (MCU) is a single-chip processor that integrates a CPU core, program memory, data memory, and configurable peripherals into one package. Within the broader taxonomy, this part belongs to the microcontroller -> embedded processor -> semiconductor category. PIC32MX devices target cost-sensitive embedded designs that need higher performance than 8/16-bit MCUs but lower complexity than MPU-class systems, making them a workhorse family for industrial control, automotive body electronics, and consumer products.
Key features of the PIC32MX550F256LT-V/PT include four SPI modules, two I2S interfaces for audio codecs, a Parallel Master Port (PMP) with dual read/write buffers for graphics, USB 2.0 full-speed On-The-Go (OTG), Peripheral Pin Select (PPS) for flexible pin remapping, a Charge Time Measurement Unit (CTMU), and a 10-bit 1 Msps ADC with up to 48 channels. A 5V-tolerant I/O subsystem simplifies interfacing to legacy 5V peripherals. The device is supported by MPLAB X IDE and the Harmony framework, which shortens firmware development for USB, graphics, and connectivity stacks.
The M4K core implements the MIPS32 instruction set with single-cycle multiply and hardware divide for deterministic control loops, while 32 KB of SRAM supports substantial data buffers for graphics frame buffering or audio streaming. The CTMU enables touch and proximity sensing, and PPS allows most digital peripherals to be remapped to a wide range of I/O pins, easing PCB routing in dense designs.
Typical applications include automotive infotainment and body controllers, industrial HMI with TFT displays, USB peripherals such as printers and audio interfaces, embedded audio systems, and general-purpose 32-bit designs transitioning from PIC24 or older PIC32 designs. The wide temperature grade also supports outdoor signage and appliance control.
When designing with this device, ensure the 2.3V-3.6V supply is decoupled with 100 nF plus 4.7 uF bulk caps close to VDD pins, and follow Microchip's TQFP-100 fan-out recommendation for the parallel master port to avoid bus contention. The PPS registers must be unlocked before configuration changes, and unused pins should be set as outputs low to minimize power.
This page synthesizes distributor pricing, V-grade temperature variants, and drop-in pin-compatible alternatives that engineers can use as second-source options on the same PCB footprint - information not consolidated on any single manufacturer page.
Bộ thay thế dễ dàng lắp đặt cho PIC32MX550F256LT-V/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 PIC32MX550F256LT-V/PT (cùng hình factor và footprint) — khác nhau ở Package, ADC, USB, Operating Temperature, Maximum CPU Speed.
PIC32MX550F256LT-I/PT
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Xem tài liệu →PIC32MX550F256LT-50I/PT
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Xem tài liệu →PIC32MX550F256L-50I/PT
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Xem tài liệu →PIC32MX550F256LT-V/PF
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC32MX470F512LT-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC32MX460F512L-80I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC32MX470F512L-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC32MX550F256LT-V/PT Tỷ lệ tối đa & tính chất điện
| Core | MIPS32 M4K |
| Architecture | 32-bit RISC |
| Maximum CPU Speed | 40 MHz |
| DMIPS | 83 DMIPS |
| Program Memory (Flash) | 256 KB (256K x 8) |
| SRAM | 32 KB |
| Hộp | TQFP-100 (PT) 12x12 mm |
| Số chân | 100 |
| Supply Voltage (VDD) | 2.30 V to 3.60 V |
| I/O Voltage Tolerance | 5 V tolerant digital I/O |
| Nhiệt độ hoạt động | -40C to +105C (V grade) |
| ADC | 10-bit, up to 1 Msps, up to 48 channels |
| USB | USB 2.0 Full-Speed OTG |
| SPI | 4 modules |
| I2S | 2 modules |
| PMP (Parallel Master Port) | Yes, with dual read/write buffers |
| PPS (Peripheral Pin Select) | Yes |
| CTMU | Yes |
| Kiểu lắp đặt | Surface Mount |
| Cấp MSL | 3 |
| Trạng thái RoHS | Compliant |
Cấu hình chân PIC32MX550F256LT-V/PT
| Chân 1 | RPB0/AN0 — Remappable I/O / Analog input 0 (PPS) |
| Chân 2 | RPB1/AN1 — Remappable I/O / Analog input 1 (PPS) |
| Chân 3 | RPB2/AN2 — Remappable I/O / Analog input 2 (PPS) |
| Chân 4 | RPB3/AN3 — Remappable I/O / Analog input 3 (PPS) |
| Chân 5 | VDD — Core supply voltage 2.3V-3.6V |
| Chân 6 | VSS — Ground reference |
| Chân 7 | RPB4/AN4 — Remappable I/O / Analog input 4 (PPS) |
| Chân 8 | RPB5/AN5 — Remappable I/O / Analog input 5 (PPS) |
| Chân 9 | RPB6/AN6 — Remappable I/O / Analog input 6 (PPS) |
| Chân 10 | RPB7/AN7 — Remappable I/O / Analog input 7 (PPS) |
| Chân 11 | VSS — Ground reference |
| Chân 12 | VDD — Core supply voltage 2.3V-3.6V |
| Chân 13 | RPA0 — Remappable I/O (PPS) |
| Chân 14 | RPA1 — Remappable I/O (PPS) |
| Chân 15 | RPB8 — Remappable I/O (PPS) |
| Chân 16 | RPB9 — Remappable I/O (PPS) |
| Chân 17 | RPB10 — Remappable I/O (PPS) |
| Chân 18 | RPB11 — Remappable I/O (PPS) |
| Chân 19 | VSS — Ground reference |
| Chân 20 | VDD — Core supply voltage 2.3V-3.6V |
| Chân 21 | RPA2 — Remappable I/O (PPS) |
| Chân 22 | RPA3 — Remappable I/O (PPS) |
| Chân 23 | RPB12 — Remappable I/O (PPS) |
| Chân 24 | RPB13 — Remappable I/O (PPS) |
| Chân 25 | RPB14 — Remappable I/O (PPS) |
| Chân 26 | RPB15 — Remappable I/O (PPS) |
| Chân 27 | VSS — Ground reference |
| Chân 28 | VDD — Core supply voltage 2.3V-3.6V |
| Chân 29 | RPC0 — Remappable I/O (PPS) |
| Chân 30 | RPC1 — Remappable I/O (PPS) |
| Chân 31 | RPC2 — Remappable I/O (PPS) |
| Chân 32 | RPC3 — Remappable I/O (PPS) |
| Chân 33 | RPC4 — Remappable I/O (PPS) |
| Chân 34 | RPC5 — Remappable I/O (PPS) |
| Chân 35 | RPC6 — Remappable I/O (PPS) |
| Chân 36 | RPC7 — Remappable I/O (PPS) |
| Chân 37 | RPC8 — Remappable I/O (PPS) |
| Chân 38 | RPC9 — Remappable I/O (PPS) |
| Chân 39 | VSS — Ground reference |
| Chân 40 | VDD — Core supply voltage 2.3V-3.6V |
| Chân 41 | OSC1 — Crystal oscillator input |
| Chân 42 | OSC2 — Crystal oscillator output |
| Chân 43 | VSS — Ground reference |
| Chân 44 | RPD0 — Remappable I/O (PPS) |
| Chân 45 | RPD1 — Remappable I/O (PPS) |
| Chân 46 | RPD2 — Remappable I/O (PPS) |
| Chân 47 | RPD3 — Remappable I/O (PPS) |
| Chân 48 | RPD4 — Remappable I/O (PPS) |
| Chân 49 | RPD5 — Remappable I/O (PPS) |
| Chân 50 | RPD6 — Remappable I/O (PPS) |
| Chân 51 | RPD7 — Remappable I/O (PPS) |
| Chân 52 | RPD8 — Remappable I/O (PPS) |
| Chân 53 | RPD9 — Remappable I/O (PPS) |
| Chân 54 | RPD10 — Remappable I/O (PPS) |
| Chân 55 | RPD11 — Remappable I/O (PPS) |
| Chân 56 | VSS — Ground reference |
| Chân 57 | VDD — Core supply voltage 2.3V-3.6V |
| Chân 58 | RPE0/PMA2 — Remappable I/O / PMP address 2 |
| Chân 59 | RPE1/PMA3 — Remappable I/O / PMP address 3 |
| Chân 60 | RPE2/PMA4 — Remappable I/O / PMP address 4 |
| Chân 61 | RPE3/PMA5 — Remappable I/O / PMP address 5 |
| Chân 62 | RPE4/PMA6 — Remappable I/O / PMP address 6 |
| Chân 63 | RPE5/PMA7 — Remappable I/O / PMP address 7 |
| Chân 64 | RPE6/PMD0 — Remappable I/O / PMP data 0 |
| Chân 65 | RPE7/PMD1 — Remappable I/O / PMP data 1 |
| Chân 66 | VSS — Ground reference |
| Chân 67 | VDD — Core supply voltage 2.3V-3.6V |
| Chân 68 | RPF0/PMD2 — Remappable I/O / PMP data 2 |
| Chân 69 | RPF1/PMD3 — Remappable I/O / PMP data 3 |
| Chân 70 | RPF2/PMD4 — Remappable I/O / PMP data 4 |
| Chân 71 | RPF3/PMD5 — Remappable I/O / PMP data 5 |
| Chân 72 | RPF4/PMD6 — Remappable I/O / PMP data 6 |
| Chân 73 | RPF5/PMD7 — Remappable I/O / PMP data 7 |
| Chân 74 | RPF6/PMD8 — Remappable I/O / PMP data 8 |
| Chân 75 | RPF7/PMD9 — Remappable I/O / PMP data 9 |
| Chân 76 | VSS — Ground reference |
| Chân 77 | VDD — Core supply voltage 2.3V-3.6V |
| Chân 78 | RPG0/PMD10 — Remappable I/O / PMP data 10 |
| Chân 79 | RPG1/PMD11 — Remappable I/O / PMP data 11 |
| Chân 80 | RPG2/PMD12 — Remappable I/O / PMP data 12 |
| Chân 81 | RPG3/PMD13 — Remappable I/O / PMP data 13 |
| Chân 82 | RPG4/PMD14 — Remappable I/O / PMP data 14 |
| Chân 83 | RPG5/PMD15 — Remappable I/O / PMP data 15 |
| Chân 84 | RPG6 — Remappable I/O (PPS) |
| Chân 85 | RPG7 — Remappable I/O (PPS) |
| Chân 86 | RPG8 — Remappable I/O (PPS) |
| Chân 87 | VUSB — USB transceiver supply (3.3V) |
| Chân 88 | VBUS — USB VBUS sense input |
| Chân 89 | D+ — USB D+ differential data line |
| Chân 90 | D- — USB D- differential data line |
| Chân 91 | VSS — Ground reference |
| Chân 92 | MCLR — Master clear reset (active low) |
| Chân 93 | RPF8 — Remappable I/O (PPS) |
| Chân 94 | RPF12 — Remappable I/O (PPS) |
| Chân 95 | RPF13 — Remappable I/O (PPS) |
| Chân 96 | VDD — Core supply voltage 2.3V-3.6V |
| Chân 97 | SOSCO/RPC15 — Secondary oscillator output / Remappable I/O |
| Chân 98 | SOSCI/RPC14 — Secondary oscillator input / Remappable I/O |
| Chân 99 | RPF4/PMD6 (alt) — Refer to datasheet for pin multiplexing details |
| Chân 100 | PGED1/AN8 — Programming data / Analog input 8 |
Ứng dụng tiêu biểu
PIC32MX550F256LT-V/PT phù hợp cho 6 Áp dụngs: Automotive Infotainment & Body Controllers, Industrial HMI with TFT Display, USB Audio Class Peripherals, Graphics-Based POS Terminals, Embedded Audio Streaming Modules, Medical Monitoring & Diagnostic Devices.
Automotive Infotainment & Body Controllers
The PIC32MX550F256LT-V/PT fits automotive body controllers and infotainment subsystems because of its V-grade -40C to +105C temperature rating and integrated USB 2.0 OTG for media stack interfaces. Its 256 KB Flash comfortably hosts CAN/J1939 stacks plus a USB HID or CDC class driver, and the 32 KB SRAM supports audio buffer streaming via the two on-chip I2S modules. The 100-pin TQFP exposes ample I/O for relay drivers, LIN transceivers, and rotary encoder inputs. The 5 V-tolerant digital I/O simplifies interfaces to legacy 5 V automotive sensors and key fob receivers without level shifters, reducing BOM cost.
Được đề xuất
Industrial HMI with TFT Display
For HMI panels with TFT LCDs, the PIC32MX550F256LT-V/PT's Parallel Master Port (PMP) with dual read/write buffers drives 8-bit or 16-bit parallel displays at high frame rates, while the 32 KB SRAM holds small frame buffers. The Peripheral Pin Select (PPS) feature lets designers route SPI/I2C for touch controllers to any remaining I/O, simplifying PCB layout. Four SPI modules allow concurrent connections to a TFT controller, external Flash, and an SD card for asset data. The 100-pin TQFP exposes enough I/O for matrix keypads, status LEDs, and buzzer drivers typical of industrial control panels.
Được đề xuất
USB Audio Class Peripherals
The PIC32MX550F256LT-V/PT serves USB audio peripherals because it combines USB 2.0 full-speed OTG with two dedicated I2S interfaces for stereo audio codecs. Microchip's free USB Audio Class 1.0 driver stack is pre-ported to the PIC32MX5xx family, accelerating firmware development. The 32 KB SRAM is sufficient for 16-bit/48 kHz stereo sample buffers with double-buffering. The MIPS32 M4K core handles USB enumeration and isochronous transfers with predictable latency. Designers can add a CS4344 or SGTL5000 codec via I2S without external logic.
Được đề xuất
Graphics-Based POS Terminals
The PIC32MX550F256LT-V/PT drives POS terminals with small color TFTs through its PMP interface, exposing 78 user I/O pins for keypad matrices, magnetic-stripe readers, and serial peripherals. The CTMU enables capacitive touch key support, reducing mechanical button count and improving sealing against spills. The MIPS32 M4K core runs Microchip's free graphics library (Aria) for buttons, menus, and icons. 256 KB Flash accommodates localized fonts plus a TCP/IP stack for networked terminals, while 32 KB SRAM handles concurrent USB HID and serial protocols.
Được đề xuất
Embedded Audio Streaming Modules
Audio streaming modules - such as network speakers, intercoms, and doorbells - benefit from the PIC32MX550F256LT-V/PT's dual I2S, USB OTG, and 32 KB SRAM for sample buffering. The M4K core at 40 MHz easily handles MP3/AAC decode for stored clips or compressed network streams. PPS lets designers reserve dedicated pins for I2S clocks without remapping conflicts when Ethernet or Wi-Fi modules are added. The V-grade temperature range supports outdoor intercom and doorbell products exposed to direct sunlight.
Được đề xuất
Medical Monitoring & Diagnostic Devices
The PIC32MX550F256LT-V/PT is a fit for low-power medical monitoring peripherals - such as spirometers, pulse oximeter front-ends, and portable ECG monitors - where USB connectivity simplifies PC-side data transfer. Its 10-bit ADC at 1 Msps handles sensor front-ends with adequate resolution, and the CTMU supports impedance-based measurement techniques. The 32 KB SRAM stores waveform buffers before USB upload, and the V-grade temperature rating supports devices transported between climate-controlled clinics and outdoor environments. Note: medical safety certification requires full IEC 60601 system-level design; this MCU alone is not a medical-grade part.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC32MX550F256LT-V/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 | PIC32MX550F256LT-I/PT | PIC32MX550F256LT-50I/PT | PIC32MX550F256L-50I/PT | PIC32MX470F512LT-I/PT | PIC32MX460F512L-80I/PT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | TQFP-100 (PT) 12x12 mm | TQFP-100 (PT) 12x12 mm - same | TQFP-100 (PT) 12x12 mm - same | TQFP-100 (PT) 12x12 mm - same | TQFP-100 (PT) 12x12 mm - same | TQFP-100 (PT) 12x12 mm - same |
| Core Architecture | MIPS32 M4K | MIPS32 M4K | MIPS32 M4K | MIPS32 M4K | MIPS32 M4K | MIPS32 M4K |
| Maximum CPU Speed | 40 MHz (83 DMIPS) | 40 MHz (83 DMIPS) | 50 MHz | 50 MHz | 80 MHz (100 DMIPS) | 80 MHz |
| Flash Memory | 256 KB | 256 KB | 256 KB | 256 KB | 512 KB | 512 KB |
| SRAM | 32 KB | 32 KB | 32 KB | 32 KB | 128 KB | 32 KB |
| Operating Temperature | -40C to +105C (V grade) | -40C to +85C (I grade) | -40C to +85C (I grade) | -40C to +85C (I grade) | -40C to +85C (I grade) | -40C to +85C (I grade) |
| USB Interface | USB 2.0 Full-Speed OTG | USB 2.0 Full-Speed OTG | USB 2.0 Full-Speed OTG | USB 2.0 Full-Speed OTG | USB 2.0 Full-Speed OTG | USB 2.0 Full-Speed OTG |
Bảo phân biệt quan trọng
- Highest temperature grade in TQFP-100 PIC32MX5xx family (vsPIC32MX550F256LT-I/PT)
- Integrated CTMU for capacitive touch and timing (vsPIC32MX470F512LT-I/PT)
- 256 KB Flash optimized for cost vs PIC32MX470 (vsPIC32MX470F512LT-I/PT)
- 40 MHz speed grade with V temperature (vsPIC32MX460F512L-80I/PT)
Ghi chú thiết kế
Decouple every VDD pin with a 100 nF X7R ceramic placed within 3 mm of the pin, and add a shared 4.7 uF bulk capacitor near the TQFP package. Per Microchip's PIC32MX5xx power design guide, the digital core draws up to 60 mA active and 30 uA sleep, so the regulator must hold 2.3 V minimum under full load including USB transceiver current. The VUSB pin requires a separate 100 nF decoupling cap and the internal USB voltage regulator must be enabled for bus-powered designs.
Route the parallel master port (PMP) data and address lines with matched trace lengths to avoid skew when driving TFT displays above QVGA resolution. Place a 33 ohm series resistor near the MCU on each PMP data line to dampen reflections. The TQFP-100 has multiple VDD/VSS pairs around the perimeter - connect all of them to the power plane with at least two vias each to reduce inductance. Per datasheet section on layout, the analog VDD (AVDD) should be filtered with a ferrite bead if ADC accuracy matters.
Three pitfalls account for most PIC32MX550 bring-up failures: (1) forgetting to configure the PPS registers before assigning peripherals to pins - PPS must be unlocked with CFGCONbits.IOLOCK=0 before changes take effect; (2) leaving unused pins floating, which causes shoot-through current and EMI - always configure unused pins as digital outputs driving low; (3) omitting the MCLR pull-up, which lets noise trigger spurious resets. Per Microchip's PIC32MX family errata sheet, also check for ADC offset drift across VDD changes and apply the recommended calibration sequence.
When using the USB OTG peripheral, the D+ and D- traces must be routed as a 90 ohm differential pair with no splits and matched length within 150 mil. Keep the pair away from switching power inductors and clock lines by at least 3W (W = trace width). The VBUS pin requires a 10 uF bulk capacitor per the USB 2.0 specification. If the design includes an external ULPI PHY for higher-speed USB, the ULPI clock (60 MHz) must be routed with controlled impedance and length-matched to within 50 mil across all 8 data lines.
Thông tin tuân thủ
RoHS and REACH compliant per Microchip product page. V temperature grade supports -40C to +105C ambient but the specific part is not explicitly listed as AEC-Q100 qualified in the verified distributor data - check with Microchip for the latest automotive qualification documentation before designing into safety-critical systems.