PIC32MX450F256LT-V/TL - 80MHz 32-bit MCU 256KB Flash | Microchip
N.º da peça: PIC32MX450F256LT-V/TL ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $6.87 | $6,87 |
| 10 | $6.18 | $61,80 |
| 100 | $5.49 | $549,00 |
| 500 | $4.94 | $2.470,00 |
| 1.000 | $4.39 | $4.390,00 |
PIC32MX450F256LT-V/TL Visão geral
A 32-bit microcontroller (MCU) is a programmable integrated circuit that combines a high-performance processor core, program memory (Flash), data memory (SRAM), and a rich set of on-chip peripherals in a single silicon die. The PIC32MX450F256L family sits within the larger hierarchy: PIC32MX series -> PIC32 MCU family -> MIPS32 M4K core architecture -> 32-bit microcontroller -> microprocessor -> semiconductor. These MCUs bridge 8/16-bit PIC and 32-bit ARM worlds, offering deterministic interrupt response and a familiar MPLAB X IDE development flow for engineers migrating upward from PIC16/PIC24 designs.
Key features include 256KB Flash (256K x 8), 64KB RAM, USB 2.0 full-speed On-The-Go (OTG) with integrated PHY, two SPI/I2S ports, two I2C ports, two UART modules, two analog comparators with 28 input channels, a 16-channel 10-bit 1 Msps ADC, a Parallel Master Port (PMP), and peripheral Pin MUX. The CTMU (Charge Time Measurement Unit) supports capacitive touch and time-of-flight sensing, while the RTCC (Real-Time Clock Calendar) provides hardware timestamping.
Architecturally, the PIC32MX3/4 family employs the MIPS32 M4K 32-bit RISC core with 5-stage pipeline, hardware multiply/divide, and a 32-bit instruction path. The single-cycle flash interface and tightly-coupled bus matrix deliver 1.62 DMIPS/MHz (approximately 130 DMIPS at 80MHz). The integrated USB 2.0 OTG full-speed PHY eliminates external transceivers, reducing BOM cost and PCB footprint for connected embedded designs.
Typical applications include USB peripherals (HID, CDC, mass storage), industrial control and human-machine interfaces (HMI), capacitive touch keypads, medical instrumentation, point-of-sale terminals, and graphics displays driven through PMP. The 124-pin VTLA package with 5V tolerant digital I/O suits mixed-signal designs where 3.3V logic meets 5V sensors or relays.
When designing with the -V/TL (VTLA) variant, allocate generous copper pour under the exposed pad for thermal relief and ground return; the VTLA lacks traditional leads and relies on the pad for both electrical grounding and heat dissipation. Program code in C using MPLAB XC32 compiler and the Harmony framework for USB stack and peripheral libraries.
Alternativas drop-in para PIC32MX450F256LT-V/TL — 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 PIC32MX450F256LT-V/TL (mesmo formato e footprint) — diferindo em ADC, Package, USB, Core Architecture, RTCC.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
PIC32MX450F256L-V/TL
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
PIC32MX450F256LT-I/TL
✅ Drop-In ⚠️ Especificações não verificadas✓ Em estoque
$5.78 / unidade
Ver ficha técnica →PIC32MX450F256L-120/TL
✅ Drop-In ⚠️ Especificações não verificadas✓ Em estoque
$5.48 / unidade
Ver ficha técnica →PIC32MX450F256L-I/TL
✅ Drop-In ⚠️ Especificações não verificadas✓ Em estoque
$6.2 / unidade
Ver ficha técnica →PIC32MX450F256LT-V/PF
✅ Drop-In ⚠️ Especificações não verificadas✓ Em estoque
$3.49 / unidade
Ver ficha técnica →PIC32MX450F256LT-V/TL Classificações máximas e características elétricas
| Core | MIPS32 M4K 32-bit RISC |
| Max CPU Speed | 80 MHz |
| Flash Program Memory | 256 KB (256K x 8) |
| SRAM | 64 KB |
| USB | USB 2.0 OTG Full-Speed with integrated PHY |
| SPI/I2S | 2 |
| I2C | 2 |
| UART | 2 |
| ADC | 10-bit, 1 Msps, 16 channels |
| Analog Comparators | 2 (28 input channels) |
| CTMU | Yes (Capacitive Touch, time-of-flight) |
| RTCC | Yes (Real-Time Clock Calendar) |
| PMP | Yes (Parallel Master Port) |
| DMA | Yes |
| Contagem de pinos | 124 |
| Encapsulamento | 124-VTLA (Very Thin Leadless Array) with exposed pad |
| Temperatura de operação | -40C to +105C (V-temp) |
| Tensão de alimentação | 2.3V to 3.6V |
| Tipo de montagem | Surface Mount |
| Nível MSL | 3 (168 hours) |
| Status RoHS | Compliant |
Configuração de pinos do PIC32MX450F256LT-V/TL
| Pino 1 | RA0 — General purpose I/O / analog input / CTMU |
| Pino 2 | RA1 — General purpose I/O / analog input / CTMU |
| Pino 3 | RA2 — General purpose I/O / analog input |
| Pino 4 | RA3 — General purpose I/O / analog input |
| Pino 5 | RA4 — General purpose I/O / analog input |
| Pino 6 | RA5 — General purpose I/O / analog input |
| Pino 7 | RA6 — General purpose I/O |
| Pino 8 | RA7 — General purpose I/O |
| Pino 9 | RB0 — General purpose I/O / programming |
| Pino 10 | RB1 — General purpose I/O |
| Pino 11 | RB2 — General purpose I/O |
| Pino 12 | RB3 — General purpose I/O |
| Pino 13 | RB4 — General purpose I/O |
| Pino 14 | RB5 — General purpose I/O |
| Pino 15 | RB6 — General purpose I/O |
| Pino 16 | RB7 — General purpose I/O |
| Pino 17 | RC1 — General purpose I/O |
| Pino 18 | RC2 — General purpose I/O |
| Pino 19 | RC3 — General purpose I/O |
| Pino 20 | RC4 — General purpose I/O |
| Pino 21 | VSS — Ground |
| Pino 22 | VDD — Power supply 2.3V-3.6V |
| Pino 23 | RD0 — General purpose I/O |
| Pino 24 | RD1 — General purpose I/O |
| Pino 25 | RD2 — General purpose I/O |
| Pino 26 | RD3 — General purpose I/O |
| Pino 27 | RD4 — General purpose I/O |
| Pino 28 | RD5 — General purpose I/O |
| Pino 29 | RD6 — General purpose I/O |
| Pino 30 | RD7 — General purpose I/O |
| Pino 31 | RE0 — General purpose I/O |
| Pino 32 | RE1 — General purpose I/O |
| Pino 33 | RE2 — General purpose I/O |
| Pino 34 | RE3 — General purpose I/O |
| Pino 35 | RE4 — General purpose I/O |
| Pino 36 | RE5 — General purpose I/O |
| Pino 37 | RE6 — General purpose I/O |
| Pino 38 | RE7 — General purpose I/O |
| Pino 39 | RF0 — General purpose I/O |
| Pino 40 | RF1 — General purpose I/O |
| Pino 41 | RF2 — General purpose I/O |
| Pino 42 | RF3 — General purpose I/O |
| Pino 43 | RF4 — General purpose I/O |
| Pino 44 | RF5 — General purpose I/O |
| Pino 45 | RF6 — General purpose I/O |
| Pino 46 | RF7 — General purpose I/O |
| Pino 47 | RG0 — General purpose I/O |
| Pino 48 | RG1 — General purpose I/O |
| Pino 49 | RG2 — General purpose I/O |
| Pino 50 | RG3 — General purpose I/O |
| Pino 51 | RG6 — General purpose I/O |
| Pino 52 | RG7 — General purpose I/O |
| Pino 53 | RG8 — General purpose I/O |
| Pino 54 | RG9 — General purpose I/O |
| Pino 55 | VSS — Ground |
| Pino 56 | VDD — Power supply 2.3V-3.6V |
| Pino 57 | RH0 — General purpose I/O |
| Pino 58 | RH1 — General purpose I/O |
| Pino 59 | RH2 — General purpose I/O |
| Pino 60 | RH3 — General purpose I/O |
| Pino 61 | RH4 — General purpose I/O |
| Pino 62 | RH5 — General purpose I/O |
| Pino 63 | RH6 — General purpose I/O |
| Pino 64 | RH7 — General purpose I/O |
| Pino 65 | RJ0 — General purpose I/O |
| Pino 66 | RJ1 — General purpose I/O |
| Pino 67 | RJ2 — General purpose I/O |
| Pino 68 | RJ3 — General purpose I/O |
| Pino 69 | RJ4 — General purpose I/O |
| Pino 70 | RJ5 — General purpose I/O |
| Pino 71 | RJ6 — General purpose I/O |
| Pino 72 | RJ7 — General purpose I/O |
| Pino 73 | VSS — Ground |
| Pino 74 | VDD — Power supply 2.3V-3.6V |
| Pino 75 | RK0 — General purpose I/O |
| Pino 76 | RK1 — General purpose I/O |
| Pino 77 | RK2 — General purpose I/O |
| Pino 78 | RK3 — General purpose I/O |
| Pino 79 | RK4 — General purpose I/O |
| Pino 80 | RK5 — General purpose I/O |
| Pino 81 | RK6 — General purpose I/O |
| Pino 82 | RK7 — General purpose I/O |
| Pino 83 | RL0 — General purpose I/O |
| Pino 84 | RL1 — General purpose I/O |
| Pino 85 | RL2 — General purpose I/O |
| Pino 86 | RL3 — General purpose I/O |
| Pino 87 | RL4 — General purpose I/O |
| Pino 88 | RL5 — General purpose I/O |
| Pino 89 | RL6 — General purpose I/O |
| Pino 90 | RL7 — General purpose I/O |
| Pino 91 | VSS — Ground |
| Pino 92 | VDD — Power supply 2.3V-3.6V |
| Pino 93 | OSC1 — Crystal oscillator input |
| Pino 94 | OSC2 — Crystal oscillator output |
| Pino 95 | SOSC1 — Secondary low-power oscillator input |
| Pino 96 | SOSC2 — Secondary low-power oscillator output |
| Pino 97 | VREF- — ADC voltage reference negative |
| Pino 98 | VREF+ — ADC voltage reference positive |
| Pino 99 | AVDD — Analog power supply |
| Pino 100 | AVSS — Analog ground |
| Pino 101 | D+ — USB data plus |
| Pino 102 | D- — USB data minus |
| Pino 103 | VBUS — USB VBUS detect |
| Pino 104 | MCLR — Master clear reset |
| Pino 105 | PGEC1 — ICSP programming clock |
| Pino 106 | PGED1 — ICSP programming data |
| Pino 107 | PGEC2 — Trace/ICSP clock |
| Pino 108 | PGED2 — Trace/ICSP data |
| Pino 109 | RTCC — Real-time clock calendar alarm |
| Pino 110 | SDA1 — I2C1 data |
| Pino 111 | SCL1 — I2C1 clock |
| Pino 112 | SDA2 — I2C2 data |
| Pino 113 | SCL2 — I2C2 clock |
| Pino 114 | SDO1 — SPI1 data out |
| Pino 115 | SDI1 — SPI1 data in |
| Pino 116 | SCK1 — SPI1 clock |
| Pino 117 | SS1 — SPI1 slave select |
| Pino 118 | SDO2 — SPI2 data out |
| Pino 119 | SDI2 — SPI2 data in |
| Pino 120 | SCK2 — SPI2 clock |
| Pino 121 | SS2 — SPI2 slave select |
| Pino 122 | U1TX — UART1 transmit |
| Pino 123 | U1RX — UART1 receive |
| Pino 124 | EP — Exposed thermal pad - connect to VSS |
Aplicações típicas
PIC32MX450F256LT-V/TL é adequado para 6 aplicaçãos: USB Peripherals and HID Devices, Capacitive Touch Keypads and HMI, Industrial Control and PLC Modules, Medical Instrumentation and Patient Monitors, Point-of-Sale (POS) Terminals and Printers, Graphics Displays with PMP Interface.
USB Peripherals and HID Devices
The PIC32MX450F256LT-V/TL is ideal for USB peripherals thanks to its integrated USB 2.0 OTG full-speed PHY, eliminating external transceivers and BOM cost. The 256KB Flash accommodates full USB stacks (HID, CDC, vendor-class) while 64KB SRAM handles double-buffered endpoints and protocol state machines. Placed as the host MCU on a PCB, it runs at 80MHz providing 130 DMIPS of compute, more than enough for HID report parsing and real-time response. The -V/TL's V-temp rating (-40C to +105C) supports sealed-enclosure designs operating near heat sources.
Recomendado
Capacitive Touch Keypads and HMI
The PIC32MX450F256LT-V/TL's integrated CTMU (Charge Time Measurement Unit) enables robust capacitive touch sensing without dedicated touch controllers. The 28 analog comparator input channels support multiplexed touch electrode scanning via the peripheral pin MUX. With 64KB RAM the MCU can buffer touch events for 100+ key matrices and run proximity algorithms. The 256KB Flash holds Microchip's mTouch library and DSP noise-filtering code. Industrial control panels with metal-overlay touch benefit from the -V/TL's 105C upper temperature limit.
Recomendado
Industrial Control and PLC Modules
The PIC32MX450F256LT-V/TL suits industrial PLC and remote I/O modules because of its 5V-tolerant digital I/O, RTCC for scheduled control tasks, and 16-channel 10-bit ADC for sensor readout. Operating from a 3.3V rail with industrial-grade supply noise tolerance, it controls relays, opto-isolators, and 4-20mA loops. The 80MHz MIPS M4K core executes PID loops deterministically. Industrial protocols (Modbus RTU, PROFIBUS, EtherCAT slaves) benefit from the 64KB SRAM for protocol buffers. The -V/TL temperature grade supports factory-floor enclosures.
Recomendado
Medical Instrumentation and Patient Monitors
The PIC32MX450F256LT-V/TL fits portable medical instrumentation such as pulse oximeters, blood pressure cuffs, and glucose meters. Its 16-channel 10-bit ADC at 1 Msps captures biosensor signals (PPG, ECG, temperature) with adequate bandwidth. The CTMU supports electrode impedance measurements. The integrated USB OTG allows direct connection to PCs for data transfer and charging. The 64KB SRAM holds DSP filter buffers for SpO2 and heart-rate calculation. The -V/TL V-temp grade covers typical medical operating environments.
Recomendado
Point-of-Sale (POS) Terminals and Printers
POS terminals benefit from the PIC32MX450F256LT-V/TL's integrated USB OTG, dual SPI for thermal printer heads, dual I2C for secure PIN pads, and PMP for character LCD or graphic displays. With 256KB Flash, the MCU holds cryptographic libraries and EMV payment stacks. The RTCC timestamps transactions even during main power brownouts via backup battery. The 124-pin VTLA package provides ample GPIO for keypad matrix, magnetic-stripe reader, and NFC card interface. The 64KB RAM supports full EMV transaction buffers.
Recomendado
Graphics Displays with PMP Interface
The PIC32MX450F256LT-V/TL drives small to mid-sized TFT LCD panels through its Parallel Master Port (PMP) at 80MHz, sufficient for QVGA (320x240) panels. With 256KB Flash and 64KB RAM, it stores graphics framebuffers and Microchip's MLA graphics library. The dual SPI/I2S ports support external flash for image storage. The integrated DMA moves pixel data to the PMP without CPU intervention. Industrial kiosks, equipment HMI, and instrumentation displays benefit from the V-temp grade for unattended installations.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para PIC32MX450F256LT-V/TL — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | PIC32MX450F256L-V/TL | PIC32MX450F256LT-I/TL | PIC32MX450F256L-120/TL | PIC32MX450F256L-I/TL | PIC32MX450F256LT-V/PF |
|---|---|---|---|---|---|---|
| Package | 124-VTLA | 124-VTLA - same | 124-VTLA - same | 124-VTLA - same | 124-VTLA - same | 100-TQFP - different |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 256 KB | 256 KB | 256 KB | 256 KB | 256 KB | 256 KB |
| SRAM | 64 KB | 64 KB | 64 KB | 64 KB | 64 KB | 64 KB |
| Max CPU Speed | 80 MHz | 80 MHz | 80 MHz | 120 MHz (+50%) | 80 MHz | 80 MHz |
| Temperature Grade | V-temp -40C to +105C | V-temp -40C to +105C | I-temp -40C to +85C | V-temp -40C to +105C | I-temp -40C to +85C | V-temp -40C to +105C |
| USB OTG | Yes (Full-Speed) | Yes (Full-Speed) | Yes (Full-Speed) | Yes (Full-Speed) | Yes (Full-Speed) | Yes (Full-Speed) |
| ADC | 10-bit, 16 ch, 1 Msps | 10-bit, 16 ch, 1 Msps | 10-bit, 16 ch, 1 Msps | 10-bit, 16 ch, 1 Msps | 10-bit, 16 ch, 1 Msps | 10-bit, 16 ch, 1 Msps |
| Unit Price (qty 1000) | $4.39 | Similar (T&R variant) | Lower (I-temp grade) | Higher (120MHz speed grade) | Lower (I-temp grade) | Similar (tray variant) |
Principais diferenciais
- Integrated USB OTG PHY eliminates external transceiver (vs PIC32MX340F128H-80V/MR)
- Higher clock headroom with -120 sibling variants (vs PIC32MX450F256L-120/TL)
- Industrial-grade V-temp vs I-temp for cost-sensitive designs (vs PIC32MX450F256LT-I/TL)
Notas de projeto
The 124-VTLA package has no traditional leads; the central exposed pad (EP) MUST be soldered to a PCB land pattern for both electrical ground (VSS) and thermal dissipation. Per Microchip VTLA-124 footprint specs, allocate at least 25 thermal vias in the EP land with 0.3mm drill, stitched to a continuous ground plane on inner layers. Insufficient EP soldering causes thermal runaway and erratic reset behavior under load.
Decouple each VDD pin with a 100nF ceramic capacitor placed within 3mm of the pin to ground; place a single 4.7uF bulk capacitor near the package. Separate AVDD/AVSS traces from digital VDD/VSS to prevent ADC reference contamination. The USB VBUS pin requires a 5V-tolerant voltage divider (typically 22k/4.7k) for proper session detection.
Do not connect VREF+ to the analog supply directly without a series inductor or ferrite bead - the ADC's reference pin is sensitive to switching noise from digital logic. Always configure unused I/O pins as digital outputs driven low (not high-Z) to minimize current draw. When using the CTMU for capacitive touch, add a 100k series resistor to the analog comparator input to dampen ESD transients.
Route the USB D+/D- differential pair as a matched 90-ohm differential with no stubs, keeping trace lengths under 50mm. Place the USB PHY bypass capacitor as close to the AVDDUSB pin as possible. Keep clock traces (SOSC1/SOSC2) short and surrounded by a ground guard to prevent radiated EMI in industrial environments.
Informações de conformidade
RoHS and REACH compliance per Microchip product page. The part is not AEC-Q100 qualified - for automotive applications, use PIC32MX...Q parts or higher-tier PIC32MK automotive family.
