PIC18F66K40T-I/PT - 8-Bit 64MHz 64KB Flash MCU TQFP-64 | Microchip
N.º da peça: PIC18F66K40T-I/PT ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $3.78 | $3,78 |
| 10 | $3.62 | $36,20 |
| 100 | $3.21 | $321,00 |
| 500 | $2.85 | $1.425,00 |
| 1.000 | $2.52 | $2.520,00 |
PIC18F66K40T-I/PT Visão geral
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program and data memory, I/O peripherals, and often communication interfaces on one silicon die. The PIC18 architecture is an 8-bit Harvard RISC core enhanced with a 16-bit instruction word, 31-level hardware stack, and linear memory addressing up to 64 KB. MCUs are positioned within the broader taxonomy of embedded computing as programmable logic devices (PLDs) sitting below microprocessors (MPUs) and digital signal controllers (DSCs) in processing capability but above discrete logic in functional integration.
Key features of this device include eXtreme Low Power (XLP) technology with sub-uA sleep currents suitable for battery-powered designs, a peripheral pin select (PPS) system that allows remapping of digital peripherals to any I/O, and 5V tolerance on most digital I/O pins. The integrated 64 MHz oscillator eliminates the need for an external crystal in many designs, and the 10-bit ADC with up to 47 channels supports mixed-signal applications.
The PIC18F66K40 uses a modified Harvard architecture with separate program Flash and data SRAM buses, allowing simultaneous instruction fetch and data access. Its nanoWatt XLP technology delivers sleep currents below 100 nA in retention modes, and the integrated Core Independent Peripherals (CIPs) - including the Complementary Waveform Generator (CWG), Windowed Watchdog Timer (WWDT), and DMA engine - offload tasks from the CPU to improve efficiency and reduce firmware complexity.
Typical applications include industrial sensor interfaces, low-power IoT edge nodes, automotive body and comfort modules, USB and CAN bridging designs, and consumer white goods. The wide 2.3 V to 5.5 V operating range simplifies designs migrating from legacy 5V PIC16/PIC18 systems to modernized low-power platforms.
Designers should evaluate the 60 I/O budget carefully against the chosen TQFP-64 footprint and verify that the PPS remapping constraints do not conflict with PCB layout. Programming and debugging are supported through Microchip's MPLAB X IDE and ICD/PICkit tools; ensure the ICSP pinout matches the chosen programming header.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the standalone manufacturer datasheet.
Alternativas drop-in para PIC18F66K40T-I/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 PIC18F66K40T-I/PT (mesmo formato e footprint) — diferindo em Package, ADC, Program Memory (Flash), Comparators, Operating Temperature.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
PIC18F66K40-I/PT
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
PIC18F66K40T-E/PTVAO
✅ Drop-In✓ Em estoque
$4.6 / unidade
Ver ficha técnica →PIC18F66K40T-I/MR
✅ Drop-In ⚠️ Especificações não verificadas✓ Em estoque
$2.46 / unidade
Ver ficha técnica →PIC18F66K40-E/PTVAO
✅ Drop-In✓ Em estoque
$2.95 / unidade
Ver ficha técnica →PIC18F65K40-I/PT
✅ Drop-In✓ Em estoque
$1.95 / unidade
Ver ficha técnica →PIC18F66K40T-I/PT Classificações máximas e características elétricas
| Core Architecture | PIC18 (8-bit Harvard RISC) |
| Program Memory (Flash) | 64 KB (32K x 16 words) |
| Data SRAM | 3.5 KB (3562 bytes) |
| Maximum CPU Frequency | 64 MHz |
| Supply Voltage (VDD) | 2.3 V to 5.5 V |
| Number of I/O Pins | 60 |
| ADC Resolution | 10-bit |
| Encapsulamento | TQFP-64 (10x10 mm) |
| Tipo de montagem | Surface Mount |
| Temperatura de operação | -40C to +85C (Industrial) |
| Low-Power Technology | eXtreme Low Power (XLP) nanoWatt |
| Nível MSL | 3 |
| Status RoHS | Compliant |
| Peripheral Features | PPS, CWG, WWDT, CRC/Memory Scan, DMA |
Guia de Configuração de Pinos do PIC18F66K40T-I/PT tqfp-64 (10x10 mm)
Configuração de pinos para PIC18F66K40T-I/PT (pacote tqfp-64 (10x10 mm)). Este CI digital inclui GPIO, interfaces de comunicação (UART, SPI, I2C) e pinos de alimentação. Consulte o datasheet do fabricante para funções alternativas dos pinos e opções de configuração. Essencial para projeto de sistemas embarcados e layout de PCB.
Nenhum dado detalhado de pinagem disponível para PIC18F66K40T-I/PT.
Consulte a ficha técnica para a configuração completa dos pinos.
Aplicações típicas
PIC18F66K40T-I/PT é adequado para 7 aplicaçãos: Industrial Sensor Hub, IoT Edge Node, Automotive Body Module, USB-to-UART Bridge, Consumer White Goods Control, Portable Medical Device, HVAC Climate Controller.
Industrial Sensor Hub
The PIC18F66K40T-I/PT's 60 I/O pins and 10-bit ADC support multi-sensor acquisition in factory automation. With 64 KB Flash for protocol stacks and Core Independent Peripherals handling timing-critical sampling, the device aggregates analog/digital sensor data and forwards it over UART/SPI. The wide 2.3V-5.5V supply simplifies integration with both 3.3V and 5V transducers, while XLP sleep currents below 100 nA enable battery-backed installations. Peripheral Pin Select (PPS) allows I/O remapping on the fly, easing PCB layout when many sensors must share limited board area.
Recomendado
IoT Edge Node
For battery-powered IoT edge nodes, the PIC18F66K40T-I/PT's nanoWatt XLP technology delivers sub-uA sleep currents that extend coin-cell lifetime to multiple years. The 64 KB Flash accommodates TLS stacks, and the 64 MHz core provides enough headroom for local pre-processing before transmitting via companion BLE/Wi-Fi modules. The 60 I/O budget leaves ample headroom for sensor add-ons, and PPS allows digital peripherals to be reassigned without PCB rework. The 5V tolerance simplifies direct interfacing to legacy industrial sensors on the same board.
Recomendado
Automotive Body Module
The PIC18F66K40T-I/PT powers body-control modules where -40C to +85C industrial temperature range handles cabin and under-hood variations. For harsher environments, the PIC18F66K40T-E/PTVAO variant extends to -40C to +125C with AEC-Q100 automotive qualification. Core Independent Peripherals like the Complementary Waveform Generator (CWG) drive motor/lighting loads without CPU intervention, freeing cycles for CAN/LIN communication. 64 KB Flash supports OSEK/ AUTOSAR-compatible firmware, and 60 I/O lines accommodate multiple switch and relay interfaces.
Recomendado
USB-to-UART Bridge
The PIC18F66K40T-I/PT's 64 MHz CPU and 60 I/O enable implementation of a full-speed USB device controller (via integrated USB peripheral) plus multiple UART/SPI/I2C bridges on a single chip. The 64 KB Flash holds USB stack, class drivers, and protocol converters, while PPS maps USB and bridge signals to convenient pins. Operating from a 5V USB rail, the MCU needs no external regulators. Industrial temperature grade suits field-installed bridge boxes in factory automation.
Recomendado
Consumer White Goods Control
Washing machines, refrigerators, and HVAC controllers benefit from the PIC18F66K40T-I/PT's wide 2.3-5.5V supply (which interfaces directly with 5V relay drivers), 60 I/O for keypad/display/buzzer, and XLP low-power modes that comply with energy-star standby limits. The 10-bit ADC reads thermistors and humidity sensors, while PWM outputs drive triac-controlled AC loads through optocouplers. Industrial temperature range covers kitchen and laundry environments, and the large Flash accommodates user-interface firmware in multiple languages.
Recomendado
Portable Medical Device
Battery-powered medical monitoring devices leverage the PIC18F66K40T-I/PT's XLP technology for multi-year coin-cell operation. The 10-bit ADC digitizes signals from biomedical sensors (pulse oximetry, temperature), 60 I/O connect to small LCDs and keypads, and 64 KB Flash holds firmware with optional encryption for data security. The 5V tolerance simplifies direct connection to analog front-ends, and the industrial temp range covers clinical and home-use environments. PPS allows re-routing when the same PCB is reused across product variants.
Recomendado
HVAC Climate Controller
Climate controllers use the PIC18F66K40T-I/PT's multiple PWM channels to drive fan motors and proportional valves, while the 10-bit ADC reads thermistor temperature sensors. 60 I/O connect to display panels and rotary encoders, and the wide supply voltage simplifies integration with 24VAC-powered HVAC electronics after rectification. XLP deep-sleep modes cut standby power below energy-star thresholds. Core Independent Peripherals handle safety-critical timing (compressor minimum off-times) without CPU overhead.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para PIC18F66K40T-I/PT — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | PIC18F66K40-I/PT | PIC18F66K40T-E/PTVAO | PIC18F66K40-E/PTVAO | PIC18F65K40-I/PT |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | TQFP-64 (10x10 mm) | TQFP-64 (10x10 mm) - same | TQFP-64 (10x10 mm) - same | TQFP-64 (10x10 mm) - same | TQFP-64 (10x10 mm) - same |
| Flash Memory | 64 KB | 64 KB | 64 KB | 64 KB | 32 KB |
| SRAM | 3.5 KB | 3.5 KB | 3.5 KB | 3.5 KB | 2 KB |
| Max CPU Frequency | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz |
| Supply Voltage | 2.3 V to 5.5 V | 2.3 V to 5.5 V | 2.3 V to 5.5 V | 2.3 V to 5.5 V | 2.3 V to 5.5 V |
| I/O Pins | 60 | 60 | 60 | 60 | 50 |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +125C (Extended/Automotive) | -40C to +125C (Extended/Automotive) | -40C to +85C (Industrial) |
| Packaging Format | Tape & Reel | Tray | Tape & Reel | Tray | Tray |
| Unit Price (qty 1, USD) | 3.78 | 3.85 | 4.20 | 4.25 | 3.40 |
Principais diferenciais
- Wider temperature range option for automotive (vs PIC18F66K40T-I/PT)
- Higher I/O count than K40 sibling (vs PIC18F65K40-I/PT)
- Reel packaging for SMT assembly (vs PIC18F66K40-I/PT)
Notas de projeto
Estimated: at 64 MHz active current with all peripherals off, the PIC18F66K40T-I/PT draws approximately 8-15 mA at 5V. For battery designs, leverage Sleep and Deep Sleep modes that drop current below 1 uA and below 100 nA respectively. Always place a 100 nF decoupling capacitor within 5 mm of each VDD/VDDCORE pin pair, and add a bulk 10 uF tantalum or ceramic near the supply input for transient stability.
TQFP-64 has 0.5 mm pitch leads; route with 0.15 mm traces and use micro-vias (0.2/0.4 mm) for inner-layer fanout. Keep the exposed thermal pad (if any) soldered to a copper pour on the top layer to improve heat dissipation; even though the 66K40 is low power, high I/O switching loads can produce localized heating. Avoid running noisy switching traces beneath the crystal traces to prevent jitter.
When migrating from PIC18F46K40 to PIC18F66K40T-I/PT, verify that unused I/O pins are configured as outputs (not floating inputs) to avoid parasitic current draw. Peripheral Pin Select (PPS) locks must be unlocked via PPSLOCK before remapping; failing to do so will silently block configuration writes. Also note that programming voltage on MCLR must be a clean 12V pulse during ICSP - capacitance on MCLR above 100 pF may interfere with programming.
Informações de conformidade
Standard I-grade industrial part is not AEC-Q100 qualified - choose E/PTVAO variants for automotive. RoHS and lead-free compliant per Microchip product page.
