PIC18LF66K40T-I/PT - 8-Bit XLP MCU, 64KB Flash, 64MHz, TQFP-64 | Microchip
N.º da peça: PIC18LF66K40T-I/PT ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $5.2 | $5,20 |
| 10 | $4.78 | $47,80 |
| 100 | $4.32 | $432,00 |
| 500 | $3.95 | $1.975,00 |
| 1.000 | $3.6 | $3.600,00 |
PIC18LF66K40T-I/PT Visão geral
An 8-bit microcontroller (MCU) is a compact processor that integrates CPU, RAM, non-volatile program memory, and peripherals on a single die. PIC18 "LF" devices operate at lower voltages (1.8V-3.6V) than standard PIC18 "F" parts (2.3V-5.5V), making them ideal for battery-powered designs. The XLP family hierarchy is: PIC18 -> 8-bit MCU -> microcontroller -> embedded processor -> semiconductor. Core Independent Peripherals (CIPs) handle tasks in hardware without waking the CPU.
Key differentiating features include eXtreme Low Power technology with a deep-sleep current below 100 nA, integrated ECAN module for automotive/industrial networking, Peripheral Pin Select (PPS) for flexible I/O mapping, and the aforementioned CIPs (CWG, SMT, WWDT, CRC/SCAN) that reduce firmware overhead. Up to 60 I/O pins are available thanks to the 64-pin TQFP package.
Architecturally, the PIC18LF66K40 uses a 16-bit modified Harvard architecture with a 32-level stack, hardware multiplier, and 8x8 hardware multiply. The CIPs - including CWG (Complementary Waveform Generator), SMT (Signal Measurement Timer), and Windowed Watchdog Timer - offload timing-critical tasks from the CPU, reducing both code size and active current consumption. The 64MHz internal oscillator eliminates the need for an external crystal in many designs.
Typical applications include low-power IoT sensor nodes, automotive body and CAN nodes, industrial HMI and control panels, battery-powered medical devices, and consumer appliances requiring touch or PWM control. The wide operating voltage and ECAN module make it particularly suitable for 3.3V automotive body controllers.
When designing with this part, select the LF variant when your system runs at 3.3V or below (coin-cell, Li-ion, or 3.3V regulated rails). For 5V rails, choose the PIC18F66K40T-I/PT variant. Ensure PPS is configured before peripheral activation to avoid pin contention.
This page synthesizes distributor pricing, same-brand drop-in alternatives (e.g., PIC18LF66K40-E/PT), and practical design notes not found in the manufacturer datasheet alone.
Alternativas drop-in para PIC18LF66K40T-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 PIC18LF66K40T-I/PT (mesmo formato e footprint) — diferindo em Package, Low-Power Technology, MSL Level, Program Memory (Flash), ADC.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
PIC18LF66K40-I/PT
✅ Drop-In✓ Em estoque
$3.85 / unidade
Ver ficha técnica →PIC18LF66K40-E/PT
✅ Drop-In✓ Em estoque
$2.4 / unidade
Ver ficha técnica →PIC18F66K40T-I/PT
✅ Drop-In✓ Em estoque
$2.52 / unidade
Ver ficha técnica →PIC18F66K40-I/PT
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
PIC18LF66K40T-I/PT Classificações máximas e características elétricas
| Family | PIC18 XLP |
| Core | PIC18 8-bit |
| Program Memory (Flash) | 64 KB (32K x 16) |
| Data RAM | 4 KB |
| Data EEPROM | 1 KB |
| Maximum CPU Speed | 64 MHz |
| Operating Voltage Range | 1.8 V to 3.6 V (LF) |
| Number of I/O Pins | 60 |
| ECAN Module | Yes (Integrated) |
| Encapsulamento | 64-pin TQFP (PT) 10x10 mm |
| Tipo de montagem | Surface Mount |
| Temperatura de operação | -40 C to +85 C (Industrial) |
| Status RoHS | Compliant |
| Nível MSL | 3 (168 hours) |
Guia de Configuração de Pinos do PIC18LF66K40T-I/PT 64-pin tqfp (pt) 10x10 mm
Configuração de pinos para PIC18LF66K40T-I/PT (pacote 64-pin tqfp (pt) 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 PIC18LF66K40T-I/PT.
Consulte a ficha técnica para a configuração completa dos pinos.
Aplicações típicas
PIC18LF66K40T-I/PT é adequado para 6 aplicaçãos: Low-Power IoT Sensor Nodes, Automotive CAN Bus Nodes, Industrial HMI and Control Panels, Battery-Powered Medical Devices, Consumer Appliance Control, Touch and Proximity Sensing Interfaces.
Low-Power IoT Sensor Nodes
The PIC18LF66K40T-I/PT is engineered for battery-powered IoT sensor nodes that demand years of operation from a single coin cell or 2xAA pack. Its XLP technology delivers sub-100nA deep-sleep current, while the 64KB Flash accommodates Over-The-Air (OTA) bootloader plus application code for BLE/Zigbee/LoRa co-processors. The 64MHz CPU speed enables fast sensor read-and-transmit cycles, minimizing active time. With 60 I/O pins, the MCU can interface multiple sensors, an LCD, and a wireless module simultaneously. CIPs like SMT and WWDT handle timing and supervision autonomously, further reducing average power.
Recomendado
Automotive CAN Bus Nodes
The integrated ECAN module makes the PIC18LF66K40T-I/PT a strong fit for 3.3V automotive body electronics, HVAC controls, and lighting modules. The 1.8V-3.6V LF range aligns with modern automotive 3.3V rails, while 64KB Flash supports CANopen or J1939 protocol stacks. CWG generates complementary PWM outputs for motor drivers, and the 5-bit DAC drives analog sensor references. For 5V CAN nodes, choose the PIC18F66K40T-I/PT F variant. PPS allows flexible CAN TX/RX pin assignment, simplifying PCB layout in space-constrained body controllers.
Recomendado
Industrial HMI and Control Panels
The 60 I/O pins and 64-pin TQFP package of the PIC18LF66K40T-I/PT suit industrial HMI front panels that drive character or graphic LCDs, scan keypads, and control relays. The CWG generates complementary drive signals for power stages, while SMT captures pulse-width inputs from rotary encoders. CRC/SCAN memory integrity checking supports IEC 61508 functional safety requirements for industrial equipment. The 1.8V-3.6V LF range is compatible with 3.3V regulated industrial supplies, and PPS allows flexible routing of UART, SPI, and I2C peripherals.
Recomendado
Battery-Powered Medical Devices
For portable medical devices such as glucose meters, pulse oximeters, and handheld diagnostic tools, the PIC18LF66K40T-I/PT offers the combination of low power, ample code space, and integrated peripherals needed for FDA-compliant designs. Sub-100nA sleep current extends battery life, while 64KB Flash supports Bluetooth/BLE protocol stacks plus application firmware. The 10-bit ADC captures sensor signals with adequate resolution for vital-sign monitoring, and the DAC provides bias voltages for analog front-ends. CIPs reduce CPU load, allowing the MCU to spend more time in sleep.
Recomendado
Consumer Appliance Control
The PIC18LF66K40T-I/PT fits mid-range consumer appliances including coffee machines, washing machines, and smart thermostats. Its PWM modules drive motor and heater control loops, the 10-bit ADC reads temperature and pressure sensors, and the CWG generates complementary switching signals for synchronous rectification. The 64KB Flash supports user-interface libraries (menus, icons) plus Wi-Fi/BLE co-processor drivers. ECAN enables networked appliances communicating over CAN or CAN-FD, while Peripheral Pin Select simplifies PCB routing in compact enclosures.
Recomendado
Touch and Proximity Sensing Interfaces
The PIC18LF66K40T-I/PT integrates the Core Independent Peripherals needed for capacitive touch and proximity interfaces, including CWG, SMT, and high-speed comparators. The 10-bit ADC and 5-bit DAC support touch slider and wheel decoding, while the 64MHz CPU processes mTouch firmware algorithms. With 60 I/O pins, multiple touch electrodes can be scanned in parallel without external muxes. XLP low-power operation enables battery-powered touch remotes and keypads that wake only when the user approaches.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para PIC18LF66K40T-I/PT — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | PIC18LF66K40-I/PT | PIC18LF66K40-E/PT | PIC18F66K40T-I/PT | PIC18F66K40-I/PT |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 64-pin TQFP (PT) 10x10 mm | 64-pin TQFP (PT) 10x10 mm | 64-pin TQFP (PT) 10x10 mm | 64-pin TQFP (PT) 10x10 mm | 64-pin TQFP (PT) 10x10 mm |
| Operating Voltage | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 2.3 V to 5.5 V | 2.3 V to 5.5 V |
| Flash | 64 KB | 64 KB | 64 KB | 64 KB | 64 KB |
| RAM | 4 KB | 4 KB | 4 KB | 4 KB | 4 KB |
| CPU Speed | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz |
| I/O Pins | 60 | 60 | 60 | 60 | 60 |
| Operating Temperature | -40 C to +85 C | -40 C to +85 C | -40 C to +125 C | -40 C to +85 C | -40 C to +85 C |
| ECAN Module | Yes | Yes | Yes | Yes | Yes |
Principais diferenciais
- Lowest voltage operation in 64KB Flash PIC18 family (vs PIC18F66K40T-I/PT)
- Extended temperature option in same footprint (vs PIC18LF66K40T-I/PT vs PIC18LF66K40-E/PT)
- Same package across all 5 drop-in alternatives (vs PIC18LF65K40T-I/MR (QFN))
Notas de projeto
For battery-powered designs using the PIC18LF66K40T-I/PT, leverage the XLP deep-sleep mode with Retention Sleep (RTCC + a few peripherals running) for current below 1 uA, and full Deep Sleep (DS) mode for sub-100 nA. According to Microchip XLP family documentation, configure unused pins as digital outputs driven low to minimize leakage through floating CMOS inputs. Use Peripheral Pin Select (PPS) to map wake-up sources to interrupt-on-change pins, eliminating continuous polling loops.
Place a 100 nF decoupling capacitor on each VDD pin and a 10 uF bulk capacitor near the MCU power pins. The 64-pin TQFP package requires thermal relief on all thermal pads. According to Microchip layout guidelines, keep the 64MHz oscillator traces short and surrounded by a ground guard ring to avoid coupling into adjacent analog inputs on the 10-bit ADC. Route ECAN TX/RX differential pair with 120-ohm characteristic impedance and matched length.
Do not enable PPS functions before configuring the corresponding peripheral; this can cause pin contention. Verify VDD minimum (1.8V) is maintained during the LF device's high-speed 64MHz operation, since LF parts have tighter voltage derating at high frequencies. According to Microchip errata documentation, ensure the AVDD and AVSS pins are connected even if the ADC is unused - floating AVDD can cause unpredictable ADC readings on adjacent channels.
Informações de conformidade
RoHS compliant per Microchip product page. Industrial temperature grade (-40C to +85C); not AEC-Q100 qualified. Choose PIC18LF66K40-E/PT for -40C to +125C extended range.
