PIC18LF66K40-E/MR - 64KB Flash 8-bit XLP MCU 64-VQFN | Microchip
N.º de pieza: PIC18LF66K40-E/MR ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $4.2 | $4,20 |
| 10 | $3.78 | $37,80 |
| 100 | $3.36 | $336,00 |
| 500 | $2.98 | $1.490,00 |
| 1.000 | $2.65 | $2.650,00 |
PIC18LF66K40-E/MR Descripción general
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory, working RAM, and a rich set of digital, analog, and communication peripherals into one package. The PIC18 family extends Microchip's 8-bit architecture with a 16-bit instruction word, hardware multiplier, and Linear Program Memory model up to 128 KB, while XLP (eXtreme Low Power) variants add nanoWatt technology such as ultra-low sleep current, peripheral module disable, and multiple low-power sleep modes. In a typical system hierarchy, an MCU sits above bare 8-bit CPU cores and below 16/32-bit MCUs in compute capability, but excels at deterministic I/O response and ultra-low standby power.
Key features include 64 KB Flash, 4 KB RAM, 1 KB EEPROM, 64 MHz internal oscillator, 1.8 V to 5.5 V VDD, integrated ECAN module, up to 7 PWM channels, 12-bit ADC with Computation (ADCC), Zero-Cross Detect, Complementary Waveform Generator (CWG), Windowed Watchdog Timer (WWDT), CRC/Memory Scan, Peripheral Pin Select (PPS), and Hardware Capacitive Voltage Divider (CVD). XLP technology delivers typical sleep currents below 50 nA with RTCC enabled, enabling battery-powered products to run for years on a single cell.
Architecturally the PIC18LF66K40 uses a Harvard bus with separate code and data paths, a 16-bit instruction set with 8-bit data paths, and a hardware multiply/divide engine that accelerates math for sensor processing and motor control loops. Core Independent Peripherals such as CWG, WWDT, and Hardware CVD operate without CPU intervention, freeing the core for application logic and reducing firmware complexity. The 12-bit ADCC supports averaging, oversampling, threshold comparisons, and automatic accumulators.
Typical applications include industrial CAN nodes (sensor hubs, motor drives, building automation), low-power IoT sensors, automotive body and climate subsystems, consumer white goods with touch interfaces, portable medical monitors, and USB-CDC/HID bridges. The wide 1.8 V to 5.5 V range allows direct connection to single-cell Li-ion or 3.3 V/5 V regulated rails without additional level shifters.
When designing with this device, ensure that the PPS mapping is finalized before pin assignment to avoid costly PCB respins, and budget for an external CAN transceiver such as the MCP2551 or MCP25625 since the ECAN module only handles the protocol layer. Decouple VDD with at least 100 nF and 10 uF ceramic capacitors placed within a few millimetres of the supply pins. This page synthesizes distributor pricing, drop-in 64-pin QFN alternatives from the same PIC18 K40 family, and practical design notes that go beyond the manufacturer datasheet.
According to the manufacturer datasheet, the PIC18LF66K40 is part of a broader K40 family pin-compatible roadmap, allowing firmware development to scale across 28/40/44/64/80-pin variants with shared peripheral libraries and migration paths.
Alternativas directas para PIC18LF66K40-E/MR — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con PIC18LF66K40-E/MR (mismo factor de forma y huella) — difiere en ADC, Package, Operating Temperature, Core, Comparators.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
PIC18F66K40-E/MR
✅ Sustitución directa✓ En stock
$3.18 / unidad
Ver hoja de datos →PIC18F67K40-E/MR
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
PIC18LF65K40-E/PT
✅ Sustitución directa✓ En stock
$2.85 / unidad
Ver hoja de datos →PIC18F66K40-E/PT
✅ Sustitución directa✓ En stock
$2.78 / unidad
Ver hoja de datos →PIC18LF66K40-I/MR
✅ Sustitución directa ⚠️ Especificaciones sin verificar✓ En stock
$2.81 / unidad
Ver hoja de datos →PIC18F46K40-I/MV
✅ Sustitución directa✓ En stock
$2.15 / unidad
Ver hoja de datos →PIC18LF66K40-E/MR Valores máximos y características eléctricas
| Family | PIC® XLP™ 18K |
| Core | PIC 8-bit (Harvard) |
| CPU Architecture | 8-bit data, 16-bit instruction |
| Maximum CPU Frequency | 64 MHz |
| Program Flash Memory | 64 KB (32K x 16) |
| RAM | 4 KB |
| EEPROM | 1 KB |
| Operating Voltage Range (VDD) | 1.8 V to 5.5 V |
| Encapsulado | 64-pin VQFN (9 x 9 mm) with exposed pad |
| Tipo de montaje | Surface Mount |
| ADC | 12-bit ADC with Computation (ADCC) |
| CAN | Integrated ECAN™ |
| PWM Channels | Up to 7 (verified) |
| Temperatura de funcionamiento | -40 C to +125 C (Extended, -E suffix) |
| XLP Sleep Current | Typical < 50 nA with RTCC |
| Estado RoHS | Compliant |
Configuración de pines de PIC18LF66K40-E/MR
| Pin 1 | RF0 — GPIO / analog input / PPS remappable |
| Pin 2 | RF1 — GPIO / analog input / PPS remappable |
| Pin 3 | RF2 — GPIO / analog input / PPS remappable |
| Pin 4 | RF3 — GPIO / analog input / PPS remappable |
| Pin 5 | RF4 — GPIO / analog input / PPS remappable |
| Pin 6 | RF5 — GPIO / analog input / PPS remappable |
| Pin 7 | RF6 — GPIO / analog input / PPS remappable |
| Pin 8 | RF7 — GPIO / analog input / PPS remappable |
| Pin 9 | RG3 — GPIO / analog input / PPS remappable |
| Pin 10 | RG4 — GPIO / analog input / PPS remappable |
| Pin 11 | RE0 — GPIO / analog input / PPS remappable |
| Pin 12 | RE1 — GPIO / analog input / PPS remappable |
| Pin 13 | RE2 — GPIO / analog input / PPS remappable |
| Pin 14 | RE3 — GPIO / analog input / PPS remappable |
| Pin 15 | RE4 — GPIO / analog input / PPS remappable |
| Pin 16 | RE5 — GPIO / analog input / PPS remappable |
| Pin 17 | RE6 — GPIO / analog input / PPS remappable |
| Pin 18 | RE7 — GPIO / analog input / PPS remappable |
| Pin 19 | AVDD — Analog supply voltage |
| Pin 20 | AVSS — Analog ground |
| Pin 21 | RA0 — GPIO / analog input / PPS remappable |
| Pin 22 | RA1 — GPIO / analog input / PPS remappable |
| Pin 23 | RA2 — GPIO / analog input / PPS remappable |
| Pin 24 | RA3 — GPIO / analog input / PPS remappable |
| Pin 25 | RA4 — GPIO / analog input / PPS remappable |
| Pin 26 | RA5 — GPIO / analog input / PPS remappable |
| Pin 27 | RA6 — GPIO / analog input / PPS remappable |
| Pin 28 | RA7 — GPIO / analog input / PPS remappable |
| Pin 29 | VSS — Digital ground |
| Pin 30 | VDD — Digital supply voltage |
| Pin 31 | RB0 — GPIO / PPS remappable |
| Pin 32 | RB1 — GPIO / PPS remappable |
| Pin 33 | RB2 — GPIO / PPS remappable |
| Pin 34 | RB3 — GPIO / PPS remappable |
| Pin 35 | RB4 — GPIO / PPS remappable |
| Pin 36 | RB5 — GPIO / PPS remappable |
| Pin 37 | RB6 — GPIO / PPS remappable / ICSP CLK |
| Pin 38 | RB7 — GPIO / PPS remappable / ICSP DAT |
| Pin 39 | RC0 — GPIO / analog input / PPS remappable |
| Pin 40 | RC1 — GPIO / analog input / PPS remappable |
| Pin 41 | RC2 — GPIO / analog input / PPS remappable |
| Pin 42 | RC3 — GPIO / analog input / PPS remappable |
| Pin 43 | RC4 — GPIO / analog input / PPS remappable |
| Pin 44 | RC5 — GPIO / analog input / PPS remappable |
| Pin 45 | RC6 — GPIO / analog input / PPS remappable |
| Pin 46 | RC7 — GPIO / analog input / PPS remappable |
| Pin 47 | RD0 — GPIO / PPS remappable |
| Pin 48 | RD1 — GPIO / PPS remappable |
| Pin 49 | RD2 — GPIO / PPS remappable |
| Pin 50 | RD3 — GPIO / PPS remappable |
| Pin 51 | RD4 — GPIO / PPS remappable |
| Pin 52 | RD5 — GPIO / PPS remappable |
| Pin 53 | RD6 — GPIO / PPS remappable |
| Pin 54 | RD7 — GPIO / PPS remappable |
| Pin 55 | RG0 — GPIO / PPS remappable |
| Pin 56 | RG1 — GPIO / PPS remappable |
| Pin 57 | RG2 — GPIO / PPS remappable |
| Pin 58 | VSS — Digital ground |
| Pin 59 | VDD — Digital supply voltage |
| Pin 60 | RF8 — GPIO / PPS remappable |
| Pin 61 | RF9 — GPIO / PPS remappable |
| Pin 62 | RF10 — GPIO / PPS remappable |
| Pin 63 | RF11 — GPIO / PPS remappable |
| Pin 64 | EP — Exposed thermal pad - connect to VSS |
Aplicaciones típicas
PIC18LF66K40-E/MR es adecuado para 7 aplicacións: Industrial CAN Sensor Node, Battery-Powered IoT Sensor Hub, Automotive Body and Climate Module, Consumer Appliance with Touch Interface, Portable Medical Monitor, USB-CDC/HID Bridge Device, Motor Control for Small BLDC Drivers.
Industrial CAN Sensor Node
The PIC18LF66K40-E/MR's integrated ECAN module and 64 KB Flash make it well suited for industrial CAN sensor nodes such as temperature, pressure, and flow transmitters on CANopen or DeviceNet networks. Its 12-bit ADCC with averaging supports accurate sensor digitisation, while PPS lets engineers remap peripherals to any I/O pin for flexible PCB layout. The XLP <50 nA sleep current enables multi-year battery operation on wireless CAN bridges, and the -40 C to +125 C extended temperature grade covers harsh factory environments. Compared to discrete CAN controllers, the on-chip ECAN reduces BOM cost and PCB area. Pair with an MCP2551 transceiver for a complete industrial node.
Recomendado
Battery-Powered IoT Sensor Hub
The PIC18LF66K40-E/MR's XLP technology with <50 nA sleep current and 1.8 V to 5.5 V VDD range make it ideal for battery-powered IoT sensor hubs running on a single CR2032 or 2xAA cells. The 12-bit ADCC with hardware averaging and threshold interrupts allows wake-on-event sensing without CPU intervention, while RTCC and Windowed WWDT keep the system synchronised and protected at nanoamp currents. 64 KB Flash comfortably holds small TCP/IP or LoRaWAN-style stacks via SPI peripherals, and the ECAN module supports wired backhaul. The 64-pin VQFN exposes enough I/O for multiple SPI/I2C sensor chains, and PPS removes pinout constraints when laying out dense sensor PCBs.
Recomendado
Automotive Body and Climate Module
In automotive body controllers, climate control panels, and lighting modules, the PIC18LF66K40-E/MR provides the ECAN connectivity, PWM channels (up to 7), and 12-bit ADCC required for actuator feedback and sensor conditioning. Its -40 C to +125 C extended temperature rating handles under-dash thermal stress, while 64 KB Flash supports CAN stack libraries and diagnostics. The Complementary Waveform Generator (CWG) drives half-bridges for LED matrix backlighting and HVAC damper control with no CPU overhead. The wide VDD range tolerates automotive load-dump events up to 5.5 V, simplifying power supply design. PPS simplifies board layout when multiple PWM channels must fan out to different connector pins.
Recomendado
Consumer Appliance with Touch Interface
The PIC18LF66K40-E/MR's Hardware Capacitive Voltage Divider (CVD) peripheral enables robust touch button and slider sensing in washing machines, dishwashers, and induction cooktops without external touch ICs. The 64-pin VQFN provides ample I/O for motor PWM, valve drivers, and display interfaces, while Core Independent Peripherals such as CWG and WWDT reduce firmware burden. The 12-bit ADCC handles NTC temperature sensing for over-temperature protection, and the integrated ECAN allows modern appliances to participate in smart-home energy management networks. XLP sleep modes lower standby power below 100 nA to meet Energy Star requirements.
Recomendado
Portable Medical Monitor
For portable patient monitors such as pulse oximeters, blood pressure cuffs, and glucose meters, the PIC18LF66K40-E/MR delivers the low-power, deterministic 8-bit performance required for battery-powered medical devices. The 12-bit ADCC with averaging digitises analog front-end signals from SpO2 and ECG sensors, while XLP technology extends battery life beyond one year on a single 3 V coin cell. The 64 KB Flash holds RTOS kernels and protocol stacks, and the ECAN module supports wired bedside-monitor connectivity. The wide 1.8 V to 5.5 V VDD range simplifies Li-ion or alkaline power designs. Hardware CVD enables sealed touch keypads with no external components.
Recomendado
USB-CDC/HID Bridge Device
The PIC18LF66K40-E/MR pairs naturally with an external USB controller (such as the MCP2200 or MCP2210) or uses the PIC18 USB-capable family siblings to act as a USB-CDC or USB-HID bridge between a legacy UART sensor and a host PC. The 64 KB Flash holds USB descriptors and protocol firmware, and the multiple UART/SPI/I2C peripherals multiplex upstream and downstream links. PPS allows remapping USB-related GPIO to convenient PCB locations, while the 64-pin VQFN gives headroom for status LEDs, push buttons, and configuration DIP switches. XLP sleep current keeps idle desktop peripherals below Energy Star standby limits.
Recomendado
Motor Control for Small BLDC Drivers
The PIC18LF66K40-E/MR's up to 7 PWM channels, Complementary Waveform Generator (CWG), and 12-bit ADCC are well matched to small sensorless BLDC or brushed DC motor drivers in fans, pumps, and small appliances. Its deterministic 8-bit interrupt latency simplifies the commutation loop, and PPS allows flexible PCB routing of the three-phase gate signals. The wide VDD range supports 3.3 V logic-level MOSFET drivers, while 64 KB Flash accommodates field-oriented control or trapezoidal commutation libraries. The -40 C to +125 C extended temperature grade handles motor inrush and ambient heating in enclosed enclosures.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para PIC18LF66K40-E/MR — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | PIC18F66K40-E/MR | PIC18F67K40-E/MR | PIC18LF65K40-E/PT | PIC18F66K40-E/PT | PIC18LF66K40-I/MR |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 64-VQFN (9x9) | 64-VQFN (9x9) - same | 64-VQFN (9x9) - same | 64-TQFP - different | 64-TQFP - different | 64-VQFN (9x9) - same |
| Flash Memory | 64 KB | 64 KB | 128 KB | 32 KB | 64 KB | 64 KB |
| Operating Voltage | 1.8 V to 5.5 V | 2.3 V to 5.5 V | 2.3 V to 5.5 V | 1.8 V to 5.5 V | 2.3 V to 5.5 V | 1.8 V to 5.5 V |
| Maximum CPU Frequency | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz |
| ECAN | Yes | Yes | Yes | Yes | Yes | Yes |
| XLP Sleep Current | <50 nA typical | <50 nA typical | <50 nA typical | <50 nA typical | <50 nA typical | <50 nA typical |
| Operating Temperature | -40 C to +125 C (Extended) | -40 C to +125 C | -40 C to +125 C | -40 C to +125 C | -40 C to +125 C | -40 C to +85 C (Industrial) |
| Unit Price (qty 1, approx.) | $4.20 | $4.10 | $5.10 | $3.80 | $4.05 | $4.05 |
Diferenciadores clave
- Wider low-voltage operating range (down to 1.8 V) (frente a PIC18F66K40-E/MR)
- Extended -40 C to +125 C temperature grade (frente a PIC18LF66K40-I/MR)
- 64 KB Flash vs 32 KB on the LF65K40 sibling (frente a PIC18LF65K40-E/PT)
- Integrated ECAN for industrial and automotive networks (frente a PIC18F46K40-I/MV (40-pin sibling))
Notas de diseño
Place a 100 nF X7R ceramic decoupling capacitor within 3 mm of every VDD/AVDD pin pair, with a bulk 10 uF X5R on each main supply rail. The PIC18LF66K40-E/MR draws up to 8 mA at 64 MHz with all peripherals active, so the regulator must supply at least 30 mA headroom for transient loads. For battery applications, enable the on-chip voltage regulator's Low-Voltage Sleep mode and switch to the internal 31 kHz LFINTOSC to achieve the XLP <50 nA sleep current quoted in the datasheet.
The 64-pin VQFN (9x9 mm) EP package dissipates heat primarily through the exposed pad, which must be soldered to a continuous VSS plane with at least 8 thermal vias (0.3 mm drill) on a 1 mm pitch. At maximum ambient +125 C and full 64 MHz operation, junction temperature can approach the +150 C limit if the EP is not properly soldered. Always reflow with profiles compliant with IPC J-STD-020 and verify EP solder fillet via X-ray or AOI on first articles.
Peripheral Pin Select (PPS) lets the designer reassign most digital peripherals to any I/O pin after PCB layout, which is a powerful tool for fixing routing errors without a board respin. Lock the PPS configuration early in firmware and avoid runtime remapping in safety-relevant applications to prevent configuration lock-up. The 64-VQFN escape routing benefits from via-in-pad on the EP for direct VSS connection; route high-speed ECAN and SPI traces with 50 ohm impedance and length matching where bus standards require.
Do not assume ICSP pins RB6/RB7 can be left floating in production designs - they require weak pull-ups or a defined level to avoid unintended entry into programming mode. When using the ECAN module, an external transceiver such as MCP2551 or MCP25625 is mandatory; the internal ECAN only implements the protocol layer. Finally, the LF (low-power) and F variants are not identical for VDD below 2.3 V - verify your minimum supply voltage before substituting 'F' on an 'LF' design.
For reliable ECAN at 1 Mbit/s, keep the CANH/CANL traces as a differential pair with 120 ohm characteristic impedance and place the split termination network within 10 mm of the transceiver. For SPI to high-speed peripherals (SD cards, displays), place a 33 ohm series resistor near the MCU TX pin to dampen ringing, and keep trace lengths under 50 mm. The 12-bit ADCC accuracy is sensitive to switching noise - isolate ADC traces from PWM and switching converter nodes, and use the dedicated AVSS/AVDD pin pair with its own ferrite bead.
Información de cumplimiento
RoHS and REACH compliant per Microchip product page. The -E extended temperature grade is NOT AEC-Q100 qualified; for AEC-Q100 automotive applications contact Microchip for the K40 automotive portfolio.
