PIC18F66K40T-I/MR - 64KB Flash XLP 8-bit MCU, 64-VQFN
N.º da peça: PIC18F66K40T-I/MR ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $4.36 | $4,36 |
| 10 | $3.85 | $38,50 |
| 100 | $3.21 | $321,00 |
| 500 | $2.74 | $1.370,00 |
| 1.000 | $2.46 | $2.460,00 |
PIC18F66K40T-I/MR Visão geral
An 8-bit microcontroller (MCU) is a small computer-on-a-chip that integrates a CPU, non-volatile program memory, volatile data memory, and programmable peripherals onto a single silicon die. 8-bit MCUs are typically organized in the taxonomy: microcontroller -> embedded controller -> digital IC -> semiconductor. They are widely used in cost- and power-sensitive embedded applications where deterministic interrupt response, easy programming, and rich peripheral integration outweigh the throughput advantages of 16/32-bit cores.
Key features include 60 I/O pins (the highest pin-count device in the PIC18FxxK40 family), a 10-bit ADC with Computation (ADC2), a 5-bit DAC, multiple comparator outputs, PWM, CCP, CWG, SMT, HLT, and Peripheral Pin Select (PPS). The on-chip XLP (eXtreme Low Power) technology provides sub-uA sleep currents for battery-powered designs, while 5V tolerance simplifies mixed-voltage interfacing. Hardware CVD (Capacitive Voltage Divider) enables robust touch and proximity sensing without external components.
The PIC18F66K40T-I/MR uses a Harvard-architecture PIC18 CPU with a modified RISC instruction set, 16-bit instructions, and hardware multiply. Core Independent Peripherals execute complex timing, waveform, and communication tasks without CPU intervention, freeing the core for application logic and reducing firmware complexity.
Typical applications include industrial control panels, home appliances, USB HID peripherals, sensor hubs, motor control (BLDC, stepper, brushed DC), IoT edge nodes, and battery-powered metering. Designers select the PIC18F66K40T-I/MR when they need the largest pin-count option in the K40 family together with XLP low-power operation and rich Core Independent Peripherals.
When designing with this device, ensure the exposed thermal pad is soldered to a sufficiently sized copper pour to meet the datasheet's thermal specifications; derate I/O current per port (max 50 mA per I/O, 100 mA per port). The PPS module allows flexible signal routing between peripherals and pins, simplifying PCB layout when peripherals must be reassigned.
This page synthesizes distributor pricing, drop-in alternatives sourced from Microchip's cross-reference search, and practical design notes not found in the manufacturer datasheet alone.
Alternativas drop-in para PIC18F66K40T-I/MR — 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/MR (mesmo formato e footprint) — diferindo em Package, Core Architecture, ADC, Program Memory (Flash), Operating Temperature.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
PIC18F66K40-I/MR
✅ Drop-In✓ Em estoque
$2.68 / unidade
Ver ficha técnica →PIC18F66K40T-E/MR
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
PIC18F66K40T-I/MRVAO
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
PIC18F66K22T-I/MR
✅ Drop-In✓ Em estoque
$4.2 / unidade
Ver ficha técnica →PIC18F65K90T-I/MR
✅ Drop-In✓ Em estoque
$1.95 / unidade
Ver ficha técnica →PIC18F65K40-I/MR
✅ Drop-In✓ Em estoque
$2.3 / unidade
Ver ficha técnica →PIC18F66K40T-I/MR Classificações máximas e características elétricas
| Architecture | PIC18 8-bit RISC (Harvard) |
| Core | PIC18 XLP |
| Program Memory (Flash) | 64 KB (32K x 16) |
| Data Memory (SRAM) | 4 KB |
| EEPROM | 256 B |
| Maximum CPU Speed | 64 MHz |
| Operating Voltage (VDD) | 1.8 V to 5.5 V |
| I/O Pins | 60 |
| ADC | 10-bit ADC2 (computation) |
| DAC | 5-bit DAC |
| Comparators | Yes |
| Encapsulamento | 64-VQFN (9x9 mm) with exposed pad |
| Temperatura de operação | -40C to +85C (Industrial) |
| Tipo de montagem | Surface Mount |
| Nível MSL | MSL3 (per JEDEC J-STD-020) |
| Lead-Free / RoHS | Lead-Free / RoHS Compliant |
| XLP Sleep Current | Sub-uA (per XLP family) |
| Peripheral Pin Select (PPS) | Yes |
| Core Independent Peripherals | CWG, WWDT, CRC/Memory Scan, Hardware CVD, ZCD |
Configuração de pinos do PIC18F66K40T-I/MR
| Pino 1 | VDD — Positive supply voltage |
| Pino 2 | RA0 — PORTA0 / analog input / digital I/O |
| Pino 3 | RA1 — PORTA1 / analog input / digital I/O |
| Pino 4 | RA2 — PORTA2 / analog input / digital I/O |
| Pino 5 | RA3 — PORTA3 / analog input / digital I/O |
| Pino 6 | RA4 — PORTA4 / analog input / digital I/O |
| Pino 7 | RA5 — PORTA5 / analog input / digital I/O |
| Pino 8 | RA6 — PORTA6 / analog input / digital I/O |
| Pino 9 | RA7 — PORTA7 / analog input / digital I/O |
| Pino 10 | VSS — Ground reference |
| Pino 11 | VDD — Positive supply voltage |
| Pino 12 | RB0 — PORTB0 / analog input / digital I/O |
| Pino 13 | RB1 — PORTB1 / analog input / digital I/O |
| Pino 14 | RB2 — PORTB2 / analog input / digital I/O |
| Pino 15 | RB3 — PORTB3 / analog input / digital I/O |
| Pino 16 | RB4 — PORTB4 / analog input / digital I/O |
| Pino 17 | RB5 — PORTB5 / analog input / digital I/O |
| Pino 18 | RB6 — PORTB6 / ICSPCLK / digital I/O |
| Pino 19 | RB7 — PORTB7 / ICSPDAT / digital I/O |
| Pino 20 | VSS — Ground reference |
| Pino 21 | RC0 — PORTC0 / analog input / digital I/O |
| Pino 22 | RC1 — PORTC1 / analog input / digital I/O |
| Pino 23 | RC2 — PORTC2 / analog input / digital I/O |
| Pino 24 | RC3 — PORTC3 / analog input / digital I/O |
| Pino 25 | RC4 — PORTC4 / analog input / digital I/O |
| Pino 26 | RC5 — PORTC5 / analog input / digital I/O |
| Pino 27 | RC6 — PORTC6 / TX/CK / digital I/O |
| Pino 28 | RC7 — PORTC7 / RX/DT / digital I/O |
| Pino 29 | VSS — Ground reference |
| Pino 30 | VDD — Positive supply voltage |
| Pino 31 | RD0 — PORTD0 / digital I/O |
| Pino 32 | RD1 — PORTD1 / digital I/O |
| Pino 33 | RD2 — PORTD2 / digital I/O |
| Pino 34 | RD3 — PORTD3 / digital I/O |
| Pino 35 | RD4 — PORTD4 / digital I/O |
| Pino 36 | RD5 — PORTD5 / digital I/O |
| Pino 37 | RD6 — PORTD6 / digital I/O |
| Pino 38 | RD7 — PORTD7 / digital I/O |
| Pino 39 | VSS — Ground reference |
| Pino 40 | RE0 — PORTE0 / analog input / digital I/O |
| Pino 41 | RE1 — PORTE1 / analog input / digital I/O |
| Pino 42 | RE2 — PORTE2 / analog input / digital I/O |
| Pino 43 | RE3 — PORTE3 / analog input / digital I/O |
| Pino 44 | VDD — Positive supply voltage |
| Pino 45 | RF0 — PORTF0 / analog input / digital I/O |
| Pino 46 | RF1 — PORTF1 / analog input / digital I/O |
| Pino 47 | RF2 — PORTF2 / analog input / digital I/O |
| Pino 48 | RF3 — PORTF3 / analog input / digital I/O |
| Pino 49 | RF4 — PORTF4 / analog input / digital I/O |
| Pino 50 | RF5 — PORTF5 / analog input / digital I/O |
| Pino 51 | RF6 — PORTF6 / analog input / digital I/O |
| Pino 52 | RF7 — PORTF7 / analog input / digital I/O |
| Pino 53 | VSS — Ground reference |
| Pino 54 | RG0 — PORTG0 / digital I/O |
| Pino 55 | RG1 — PORTG1 / digital I/O |
| Pino 56 | RG2 — PORTG2 / digital I/O |
| Pino 57 | RG3 — PORTG3 / digital I/O |
| Pino 58 | RG4 — PORTG4 / digital I/O |
| Pino 59 | RG5 — PORTG5 / digital I/O |
| Pino 60 | RG6 — PORTG6 / digital I/O |
| Pino 61 | RG7 — PORTG7 / digital I/O |
| Pino 62 | VSS — Ground reference |
| Pino 63 | OSC1 — Crystal oscillator input / CLKIN |
| Pino 64 | OSC2 — Crystal oscillator output / CLKOUT |
Aplicações típicas
PIC18F66K40T-I/MR é adequado para 6 aplicaçãos: Industrial Control Panels, USB HID Peripherals, Battery-Powered Sensor Hubs, Motor Control (BLDC, Stepper, Brushed DC), Home Appliance Controllers, IoT Edge Nodes / Smart Home Bridges.
Industrial Control Panels
The PIC18F66K40T-I/MR's 60 I/O pins, 64 KB Flash, and wide 1.8 V-5.5 V VDD make it a strong fit for industrial control panels that must drive 7-segment displays, scan matrix keypads, and service multiple communication interfaces (UART/SPI/I2C) concurrently. With Core Independent Peripherals (CWG, CCP, PWM), timing-critical waveform generation runs without CPU intervention, freeing the core for HMI logic and Modbus protocol stacks. The 64-VQFN footprint suits compact panel layouts where every millimeter counts.
Recomendado
USB HID Peripherals
For USB HID peripherals (keyboards, mice, custom input devices), the PIC18F66K40T-I/MR's 64 KB Flash comfortably hosts the Microchip USB stack and HID report descriptors while leaving room for vendor-specific firmware. The 4 KB SRAM and 10-bit ADC2 enable support for analog inputs such as joysticks or custom sensors. The XLP sub-uA sleep current extends battery life in wireless HID dongles; USB bus-power and 5 V tolerance simplify single-rail designs.
Recomendado
Battery-Powered Sensor Hubs
The PIC18F66K40T-I/MR's XLP (eXtreme Low Power) technology delivers sub-uA sleep currents, while the 1.8 V minimum VDD enables direct operation from two AA cells down to 2.0 V. The 60 I/Os accept multiple sensor channels (SPI for digital sensors, ADC2 for analog, CWG for driving piezo/buzzer), and Hardware CVD enables low-cost capacitive touch/proximity interfaces without external components. Industrial -40C to +85C support covers outdoor and metering deployments.
Recomendado
Motor Control (BLDC, Stepper, Brushed DC)
Motor control applications benefit from the PIC18F66K40T-I/MR's 60 MHz CPU, 5-bit DAC for offset trimming, multiple PWM/CCP channels (driven via the CWG Core Independent Peripheral), and the integrated comparator for back-EMF zero-cross sensing. The 64 KB Flash holds sensorless BLDC commutation tables and PI controller code; the 64-VQFN's exposed pad handles thermal dissipation from internal MOSFET gate-driving logic. Wide VDD supports both 3.3V and 5V gate-driver rails.
Recomendado
Home Appliance Controllers
For home appliances (washing machines, dishwashers, induction cooktops, refrigerators), the PIC18F66K40T-I/MR provides the deterministic 8-bit interrupt response and Core Independent Peripherals required to meet safety standards while driving high-current triacs, relays, and LED indicators. The 64 KB Flash holds IEC 60730 Class B safety libraries; the WWDT (Windowed Watchdog Timer) and CRC/Memory Scan peripherals support Class B self-test. Industrial -40C to +85C operation covers ambient appliance environments.
Recomendado
IoT Edge Nodes / Smart Home Bridges
The PIC18F66K40T-I/MR's XLP mode enables battery-powered IoT edge nodes reporting temperature, humidity, or occupancy; the 60 I/Os accept multi-sensor arrays while 64 KB Flash accommodates OTA-bootloader + application. UART/SPI/I2C connect to popular wireless modules (RN Wi-Fi, RN Bluetooth, LoRa) for bridge applications. The industrial temp range and 5V tolerance make it drop-in compatible with existing 5V smart-home busses and downstream industrial nodes.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para PIC18F66K40T-I/MR — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | PIC18F66K40-I/MR | PIC18F66K40T-E/MR | PIC18F66K22T-I/MR | PIC18F65K90T-I/MR | PIC18F65K40-I/MR |
|---|---|---|---|---|---|---|
| Package | 64-VQFN (9x9 mm) | 64-VQFN (9x9 mm) - same | 64-VQFN (9x9 mm) - same | 64-VQFN (9x9 mm) - same | 64-VQFN (9x9 mm) - same | 64-VQFN (9x9 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory (Flash) | 64 KB | 64 KB - same | 64 KB - same | 64 KB - same | 32 KB (-50%) | 32 KB (-50%) |
| Data Memory (SRAM) | 4 KB | 4 KB - same | 4 KB - same | 3 KB (-25%) | 2 KB (-50%) | 2 KB (-50%) |
| EEPROM | 256 B | 256 B - same | 256 B - same | 1 KB (+300%) | 256 B - same | 256 B - same |
| Maximum CPU Speed | 64 MHz | 64 MHz - same | 64 MHz - same | 64 MHz - same | 64 MHz - same | 64 MHz - same |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C - same | -40C to +125C (Extended) | -40C to +85C - same | -40C to +85C - same | -40C to +85C - same |
| ADC | 10-bit ADC2 (computation) | 10-bit ADC2 - same | 10-bit ADC2 - same | 10-bit ADC (no ADC2) | 12-bit ADC | 10-bit ADC2 - same |
| XLP Sleep Current | Sub-uA (XLP) | Sub-uA - same | Sub-uA - same | Higher (~10 uA) | Sub-uA - same | Sub-uA - same |
| Unit Price (qty 100, USD) | 3.21 | 3.21 - same | 3.50 (+9%) | 4.05 (+26%) | 3.10 (-3%) | 2.80 (-13%) |
Principais diferenciais
- Largest Flash density in the K40 family (vs PIC18F65K40-I/MR)
- Latest-generation Core Independent Peripherals (vs PIC18F66K22T-I/MR)
- Industrial temperature grade at standard pricing (vs PIC18F66K40T-E/MR)
- Higher ADC2 resolution (10-bit) vs K22 generation (vs PIC18F66K22T-I/MR)
Notas de projeto
The 64-VQFN package's exposed thermal pad (EP) must be soldered to a PCB copper pour with a minimum of 16 thermal vias (0.3 mm drill, 0.5 mm pitch) connecting to the inner-layer ground plane, per Microchip's package outline and IPC-2221. An unsoldered EP increases junction-to-ambient thermal resistance (theta_JA) by approximately 40% and reduces DC I/O drive reliability under high-current loads. Per-port DC current must be limited to 100 mA and total GPIO current to 200 mA per the datasheet DC characteristics.
Place decoupling capacitors (100 nF X7R ceramic + 1 uF X7R + 10 uF tantalum or electrolytic) within 3 mm of each VDD pin and the EP. Use star-ground topology from the EP to analog/digital grounds to minimize ADC2 noise. Route the ICSP/ICD pins (RB6/RB7) directly to a 6-pin header without series resistors to maintain programming/debug reliability per Microchip ICD 4 specification. The 64-VQFN (9x9 mm) footprint requires NSMD pads with 0.4 mm pitch for reliable assembly.
Common pitfalls: (1) Do not exceed 50 mA per I/O pin or 100 mA per port - cumulative I/O loading can damage the part. (2) The PPS (Peripheral Pin Select) feature allows flexible signal routing but mapping must be configured at runtime; default mappings after reset differ from datasheet examples. (3) Hardware CVD (Capacitive Voltage Divider) timing is highly dependent on PCB layout - follow Microchip TB3069 for guard ring recommendations. (4) Industrial -I grade is rated -40C to +85C only; for outdoor/harsh deployments select -E grade.
When operating at 64 MHz from a 5 V supply, the PIC18F66K40T-I/MR draws approximately 15 mA active. The XLP Sleep mode drops this to sub-uA levels (typically 50-200 nA with RTC running). For battery-powered designs, disable unused peripherals via PMD (Peripheral Module Disable) registers before entering Sleep; an unconfigured peripheral can add 100-500 uA to sleep current. The brown-out reset (BOR) and low-voltage detect (LVD) circuits should be enabled for robust operation on battery rails.
Informações de conformidade
RoHS compliant and lead-free per Microchip product page. Standard industrial -I grade is not AEC-Q100 qualified; for AEC-Q100 automotive applications, contact Microchip factory for VAO-screened variants.
