PIC32MX550F256LT-V/PT - 32-bit MCU 256KB Flash TQFP-100 | Microchip
N.º da peça: PIC32MX550F256LT-V/PT ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $8.92 | $8,92 |
| 10 | $7.94 | $79,40 |
| 100 | $6.85 | $685,00 |
| 500 | $6.05 | $3.025,00 |
| 1.000 | $5.48 | $5.480,00 |
PIC32MX550F256LT-V/PT Visão geral
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.
Alternativas drop-in para PIC32MX550F256LT-V/PT — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com PIC32MX550F256LT-V/PT (mesmo formato e footprint) — diferindo em Package, ADC, USB, Operating Temperature, Maximum CPU Speed.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
PIC32MX550F256LT-I/PT
✅ Drop-In✓ Em estoque
$4.16 / unidade
Ver ficha técnica →PIC32MX550F256LT-50I/PT
✅ Drop-In✓ Em estoque
$4.2 / unidade
Ver ficha técnica →PIC32MX550F256L-50I/PT
✅ Drop-In✓ Em estoque
$3.96 / unidade
Ver ficha técnica →PIC32MX550F256LT-V/PF
✅ Drop-In✓ Em estoque
$4.55 / unidade
Ver ficha técnica →PIC32MX470F512LT-I/PT
✅ Drop-In✓ Em estoque
$5.84 / unidade
Ver ficha técnica →PIC32MX460F512L-80I/PT
✅ Drop-In✓ Em estoque
$6.05 / unidade
Ver ficha técnica →PIC32MX470F512L-I/PT
✅ Drop-In✓ Em estoque
$6.32 / unidade
Ver ficha técnica →PIC32MX550F256LT-V/PT Classificações máximas e características elétricas
| 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 |
| Encapsulamento | TQFP-100 (PT) 12x12 mm |
| Contagem de pinos | 100 |
| Supply Voltage (VDD) | 2.30 V to 3.60 V |
| I/O Voltage Tolerance | 5 V tolerant digital I/O |
| Temperatura de operação | -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 |
| Tipo de montagem | Surface Mount |
| Nível MSL | 3 |
| Status RoHS | Compliant |
Configuração de pinos do PIC32MX550F256LT-V/PT
| Pino 1 | RPB0/AN0 — Remappable I/O / Analog input 0 (PPS) |
| Pino 2 | RPB1/AN1 — Remappable I/O / Analog input 1 (PPS) |
| Pino 3 | RPB2/AN2 — Remappable I/O / Analog input 2 (PPS) |
| Pino 4 | RPB3/AN3 — Remappable I/O / Analog input 3 (PPS) |
| Pino 5 | VDD — Core supply voltage 2.3V-3.6V |
| Pino 6 | VSS — Ground reference |
| Pino 7 | RPB4/AN4 — Remappable I/O / Analog input 4 (PPS) |
| Pino 8 | RPB5/AN5 — Remappable I/O / Analog input 5 (PPS) |
| Pino 9 | RPB6/AN6 — Remappable I/O / Analog input 6 (PPS) |
| Pino 10 | RPB7/AN7 — Remappable I/O / Analog input 7 (PPS) |
| Pino 11 | VSS — Ground reference |
| Pino 12 | VDD — Core supply voltage 2.3V-3.6V |
| Pino 13 | RPA0 — Remappable I/O (PPS) |
| Pino 14 | RPA1 — Remappable I/O (PPS) |
| Pino 15 | RPB8 — Remappable I/O (PPS) |
| Pino 16 | RPB9 — Remappable I/O (PPS) |
| Pino 17 | RPB10 — Remappable I/O (PPS) |
| Pino 18 | RPB11 — Remappable I/O (PPS) |
| Pino 19 | VSS — Ground reference |
| Pino 20 | VDD — Core supply voltage 2.3V-3.6V |
| Pino 21 | RPA2 — Remappable I/O (PPS) |
| Pino 22 | RPA3 — Remappable I/O (PPS) |
| Pino 23 | RPB12 — Remappable I/O (PPS) |
| Pino 24 | RPB13 — Remappable I/O (PPS) |
| Pino 25 | RPB14 — Remappable I/O (PPS) |
| Pino 26 | RPB15 — Remappable I/O (PPS) |
| Pino 27 | VSS — Ground reference |
| Pino 28 | VDD — Core supply voltage 2.3V-3.6V |
| Pino 29 | RPC0 — Remappable I/O (PPS) |
| Pino 30 | RPC1 — Remappable I/O (PPS) |
| Pino 31 | RPC2 — Remappable I/O (PPS) |
| Pino 32 | RPC3 — Remappable I/O (PPS) |
| Pino 33 | RPC4 — Remappable I/O (PPS) |
| Pino 34 | RPC5 — Remappable I/O (PPS) |
| Pino 35 | RPC6 — Remappable I/O (PPS) |
| Pino 36 | RPC7 — Remappable I/O (PPS) |
| Pino 37 | RPC8 — Remappable I/O (PPS) |
| Pino 38 | RPC9 — Remappable I/O (PPS) |
| Pino 39 | VSS — Ground reference |
| Pino 40 | VDD — Core supply voltage 2.3V-3.6V |
| Pino 41 | OSC1 — Crystal oscillator input |
| Pino 42 | OSC2 — Crystal oscillator output |
| Pino 43 | VSS — Ground reference |
| Pino 44 | RPD0 — Remappable I/O (PPS) |
| Pino 45 | RPD1 — Remappable I/O (PPS) |
| Pino 46 | RPD2 — Remappable I/O (PPS) |
| Pino 47 | RPD3 — Remappable I/O (PPS) |
| Pino 48 | RPD4 — Remappable I/O (PPS) |
| Pino 49 | RPD5 — Remappable I/O (PPS) |
| Pino 50 | RPD6 — Remappable I/O (PPS) |
| Pino 51 | RPD7 — Remappable I/O (PPS) |
| Pino 52 | RPD8 — Remappable I/O (PPS) |
| Pino 53 | RPD9 — Remappable I/O (PPS) |
| Pino 54 | RPD10 — Remappable I/O (PPS) |
| Pino 55 | RPD11 — Remappable I/O (PPS) |
| Pino 56 | VSS — Ground reference |
| Pino 57 | VDD — Core supply voltage 2.3V-3.6V |
| Pino 58 | RPE0/PMA2 — Remappable I/O / PMP address 2 |
| Pino 59 | RPE1/PMA3 — Remappable I/O / PMP address 3 |
| Pino 60 | RPE2/PMA4 — Remappable I/O / PMP address 4 |
| Pino 61 | RPE3/PMA5 — Remappable I/O / PMP address 5 |
| Pino 62 | RPE4/PMA6 — Remappable I/O / PMP address 6 |
| Pino 63 | RPE5/PMA7 — Remappable I/O / PMP address 7 |
| Pino 64 | RPE6/PMD0 — Remappable I/O / PMP data 0 |
| Pino 65 | RPE7/PMD1 — Remappable I/O / PMP data 1 |
| Pino 66 | VSS — Ground reference |
| Pino 67 | VDD — Core supply voltage 2.3V-3.6V |
| Pino 68 | RPF0/PMD2 — Remappable I/O / PMP data 2 |
| Pino 69 | RPF1/PMD3 — Remappable I/O / PMP data 3 |
| Pino 70 | RPF2/PMD4 — Remappable I/O / PMP data 4 |
| Pino 71 | RPF3/PMD5 — Remappable I/O / PMP data 5 |
| Pino 72 | RPF4/PMD6 — Remappable I/O / PMP data 6 |
| Pino 73 | RPF5/PMD7 — Remappable I/O / PMP data 7 |
| Pino 74 | RPF6/PMD8 — Remappable I/O / PMP data 8 |
| Pino 75 | RPF7/PMD9 — Remappable I/O / PMP data 9 |
| Pino 76 | VSS — Ground reference |
| Pino 77 | VDD — Core supply voltage 2.3V-3.6V |
| Pino 78 | RPG0/PMD10 — Remappable I/O / PMP data 10 |
| Pino 79 | RPG1/PMD11 — Remappable I/O / PMP data 11 |
| Pino 80 | RPG2/PMD12 — Remappable I/O / PMP data 12 |
| Pino 81 | RPG3/PMD13 — Remappable I/O / PMP data 13 |
| Pino 82 | RPG4/PMD14 — Remappable I/O / PMP data 14 |
| Pino 83 | RPG5/PMD15 — Remappable I/O / PMP data 15 |
| Pino 84 | RPG6 — Remappable I/O (PPS) |
| Pino 85 | RPG7 — Remappable I/O (PPS) |
| Pino 86 | RPG8 — Remappable I/O (PPS) |
| Pino 87 | VUSB — USB transceiver supply (3.3V) |
| Pino 88 | VBUS — USB VBUS sense input |
| Pino 89 | D+ — USB D+ differential data line |
| Pino 90 | D- — USB D- differential data line |
| Pino 91 | VSS — Ground reference |
| Pino 92 | MCLR — Master clear reset (active low) |
| Pino 93 | RPF8 — Remappable I/O (PPS) |
| Pino 94 | RPF12 — Remappable I/O (PPS) |
| Pino 95 | RPF13 — Remappable I/O (PPS) |
| Pino 96 | VDD — Core supply voltage 2.3V-3.6V |
| Pino 97 | SOSCO/RPC15 — Secondary oscillator output / Remappable I/O |
| Pino 98 | SOSCI/RPC14 — Secondary oscillator input / Remappable I/O |
| Pino 99 | RPF4/PMD6 (alt) — Refer to datasheet for pin multiplexing details |
| Pino 100 | PGED1/AN8 — Programming data / Analog input 8 |
Aplicações típicas
PIC32MX550F256LT-V/PT é adequado para 6 aplicaçãos: 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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para PIC32MX550F256LT-V/PT — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | 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 |
Principais diferenciais
- Highest temperature grade in TQFP-100 PIC32MX5xx family (vs PIC32MX550F256LT-I/PT)
- Integrated CTMU for capacitive touch and timing (vs PIC32MX470F512LT-I/PT)
- 256 KB Flash optimized for cost vs PIC32MX470 (vs PIC32MX470F512LT-I/PT)
- 40 MHz speed grade with V temperature (vs PIC32MX460F512L-80I/PT)
Notas de projeto
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.
Informações de conformidade
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.