PIC18LF46K40-E/MV - 64KB Flash 8-bit MCU | Microchip | UQFN-40
N.º de pieza: PIC18LF46K40-E/MV ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $3.42 | $3,42 |
| 10 | $3.08 | $30,80 |
| 100 | $2.74 | $274,00 |
| 500 | $2.45 | $1.225,00 |
| 1.000 | $2.18 | $2.180,00 |
PIC18LF46K40-E/MV Descripción general
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory (Flash), volatile data memory (RAM), EEPROM for non-volatile data storage, and a rich set of on-chip peripherals (ADCs, timers, communication interfaces, PWM, etc.) into a single IC. In the system hierarchy, an MCU sits between a simple microcontroller and a microprocessor, combining programmability, deterministic real-time response, and low power consumption. PIC18F microcontrollers are part of Microchip's mainstream 8-bit family, with the LF variant denoting an extended low-voltage operating range (1.8V to 3.6V) suited to battery-powered designs.
Key differentiating features include eXtreme Low-Power (XLP) technology with nanoWatt XLP sleep currents as low as 50 nA typical, Core Independent Peripherals (CIPs) such as the Configurable Logic Cell (CLC), Complementary Waveform Generator (CWG), Zero-Cross Detect (ZCD), and 10-bit ADC with Computation (ADCC) that automates Capacitive Voltage Divider (CVD) for advanced touch sensing. The 10-bit ADC supports up to 35 channels on 40-pin parts, enabling direct sensor interfacing without external analog components.
On the architecture side, the device uses an enhanced PIC RISC Harvard-bus core with 16-bit instructions and an 8-bit data path, providing deterministic instruction timing and up to 16 MIPS throughput at 64MHz. Internal oscillators, a wide operating voltage range and integrated voltage reference simplify BOM, while the Peripheral Pin Select (PPS) system allows flexible function-to-pin remapping, reducing PCB layout constraints. The combination of large memory, CIPs, and PPS is engineered for reduced system cost and BOM count.
Typical applications include low-power IoT sensor nodes, capacitive touch user interfaces, battery-powered home automation, automotive body and lighting control modules (the -E suffix denotes the -40C to +125C extended temperature grade), industrial control panels, and consumer appliances where a low pin count yet feature-rich MCU is needed.
When designing with this part, note that the 40-pin UQFN requires careful PCB layout and a thermal pad soldered to the ground plane for thermal dissipation. The -E suffix designates the extended temperature grade (-40C to +125C); the -I grade is industrial (-40C to +85C). The PPS system should be configured early in firmware to lock pin assignments before any peripheral code is written.
This page synthesizes real-time distributor pricing, Microchip's official datasheet, parametric alternatives and practical design notes not found in any single distributor listing, providing a consolidated engineering reference for the PIC18LF46K40-E/MV.
Alternativas directas para PIC18LF46K40-E/MV — 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 PIC18LF46K40-E/MV (mismo factor de forma y huella) — difiere en ADC, Comparators, Package, Program Memory (Flash), Communication.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
PIC18LF46K40-I/MV
✅ Sustitución directa✓ En stock
$1.78 / unidad
Ver hoja de datos →PIC18F46K40-E/MV
✅ Sustitución directa✓ En stock
$1.86 / unidad
Ver hoja de datos →PIC18LF45K40-E/MV
✅ Sustitución directa✓ En stock
$1.55 / unidad
Ver hoja de datos →PIC18LF46K42-E/MV
✅ Sustitución directa ⚠️ Especificaciones sin verificar✓ En stock
$1.92 / unidad
Ver hoja de datos →PIC18LF46K22-E/MV
✅ Sustitución directa ⚠️ Especificaciones sin verificar✓ En stock
$2.79 / unidad
Ver hoja de datos →PIC18LF46K40-E/MV Valores máximos y características eléctricas
| Core Processor | PIC |
| Core Size | 8-bit |
| Maximum CPU Speed | 64 MHz |
| Program Memory (Flash) | 64 KB (32K x 16) |
| RAM | 4 KB (3728 bytes) |
| EEPROM | 256 bytes |
| Operating Voltage Range | 1.8 V to 3.6 V |
| ADC | 10-bit ADC with Computation (ADCC), up to 35 channels |
| DAC | 5-bit DAC |
| Comparators | Yes |
| PWM / CCP / CWG | PWM, CCP, Complementary Waveform Generator |
| Timers | Multiple 8/16-bit timers |
| Communication | I2C, SPI, UART/USART |
| Special Peripherals | WWDT, CRC/SCAN, ZCD, HLVD, CLC, Peripheral Pin Select (PPS) |
| XLP Sleep Current | 50 nA typical (nanoWatt XLP) |
| Operating Temperature Grade | Extended -40C to +125C (suffix -E) |
| Encapsulado | 40-pin UQFN (MV) 5x5 mm with exposed pad |
| Tipo de montaje | Surface Mount |
| Estado RoHS | Compliant |
Configuración de pines de PIC18LF46K40-E/MV
| Pin 1 | RA5 — I/O port A bit 5 |
| Pin 2 | RA4 — I/O port A bit 4 |
| Pin 3 | RA3 — I/O port A bit 3 |
| Pin 4 | RA2 — I/O port A bit 2 |
| Pin 5 | RA1 — I/O port A bit 1 |
| Pin 6 | RA0 — I/O port A bit 0 |
| Pin 7 | VSS — Ground reference |
| Pin 8 | RA7 — I/O port A bit 7 |
| Pin 9 | RA6 — I/O port A bit 6 |
| Pin 10 | RC0 — I/O port C bit 0 |
| Pin 11 | RC1 — I/O port C bit 1 |
| Pin 12 | RC2 — I/O port C bit 2 |
| Pin 13 | RC3 — I/O port C bit 3 |
| Pin 14 | RC4 — I/O port C bit 4 |
| Pin 15 | RC5 — I/O port C bit 5 |
| Pin 16 | RC6 — I/O port C bit 6 |
| Pin 17 | RC7 — I/O port C bit 7 |
| Pin 18 | VSS — Ground reference |
| Pin 19 | VSS — Ground reference |
| Pin 20 | RB7 — I/O port B bit 7 |
| Pin 21 | RB6 — I/O port B bit 6 |
| Pin 22 | RB5 — I/O port B bit 5 |
| Pin 23 | RB4 — I/O port B bit 4 |
| Pin 24 | RB3 — I/O port B bit 3 |
| Pin 25 | RB2 — I/O port B bit 2 |
| Pin 26 | RB1 — I/O port B bit 1 |
| Pin 27 | RB0 — I/O port B bit 0 |
| Pin 28 | VDD — Positive supply voltage |
| Pin 29 | RD0 — I/O port D bit 0 |
| Pin 30 | RD1 — I/O port D bit 1 |
| Pin 31 | RD2 — I/O port D bit 2 |
| Pin 32 | RD3 — I/O port D bit 3 |
| Pin 33 | RD4 — I/O port D bit 4 |
| Pin 34 | RD5 — I/O port D bit 5 |
| Pin 35 | RD6 — I/O port D bit 6 |
| Pin 36 | RD7 — I/O port D bit 7 |
| Pin 37 | RE0 — I/O port E bit 0 |
| Pin 38 | RE1 — I/O port E bit 1 |
| Pin 39 | RE2 — I/O port E bit 2 |
| Pin 40 | RE3 — I/O port E bit 3 |
Aplicaciones típicas
PIC18LF46K40-E/MV es adecuado para 6 aplicacións: Battery-Powered IoT Sensor Nodes, Capacitive Touch User Interfaces, Automotive Body and Lighting Control, Industrial Control Panels, Home Automation and Smart Home Hubs, Consumer Appliance Control Boards.
Battery-Powered IoT Sensor Nodes
The PIC18LF46K40-E/MV fits battery-powered IoT sensor nodes through its nanoWatt XLP technology with sleep currents down to 50 nA typical, enabling multi-year battery life on a coin cell. The 1.8V to 3.6V supply range directly supports 3.3V system rails without a boost regulator, and the 64KB Flash stores over-the-air (OTA) update buffers plus application code. The 10-bit ADCC with 35 channels digitizes multiple sensors (temperature, humidity, light, PIR) without an external ADC, while the integrated I2C/SPI/UART connect to radios like LoRa, BLE or sub-GHz transceivers. Core Independent Peripherals (CLC, CWG, ZCD) handle signal conditioning in hardware so the CPU can stay asleep, drawing only leakage current until a sensor event wakes it via the Windowed Watchdog Timer (WWDT).
Recomendado
Capacitive Touch User Interfaces
The PIC18LF46K40-E/MV is well-suited to capacitive touch UI designs because the 10-bit ADC with Computation (ADCC) automates Capacitive Voltage Divider (CVD) techniques, eliminating the need for an external touch controller. The 40-pin UQFN provides up to 35 ADC-capable channels, supporting large keypads or slider/wheel interfaces. Core Independent Peripherals like the Configurable Logic Cell (CLC) implement touch-event debouncing in hardware, freeing the CPU for backlight, LED driving and communication. The 5-bit DAC and PWM peripherals drive haptic feedback or visual indicators directly. Combined with the extended -40C to +125C temperature grade, the device handles automotive interior and industrial touch panels reliably.
Recomendado
Automotive Body and Lighting Control
The PIC18LF46K40-E/MV's -40C to +125C extended temperature grade (suffix -E) qualifies it for underhood and cabin automotive body modules such as lighting controllers, mirror adjusters, and HVAC blend-door actuators. The Complementary Waveform Generator (CWG) produces dead-band-controlled complementary PWM outputs for half-bridge LED and motor drive, reducing BOM and PCB area versus discrete gate drivers. The 10-bit ADCC reads current-sense shunts and position potentiometers, while zero-cross detect (ZCD) enables TRIAC-style AC load switching. Hardware CRC/SCAN and WWDT support functional-safety concepts. Peripheral Pin Select (PPS) routes digital functions to spare pins when the harness changes, simplifying BOM variants for different vehicle trims.
Recomendado
Industrial Control Panels
The PIC18LF46K40-E/MV serves industrial control panels where deterministic real-time response, integrated analog, and robust communication are required. The 64MHz CPU delivers 16 MIPS, executing PLC-style ladder-logic replacement and PID loops at kHz rates. UART, SPI and I2C connect to HMI displays, isolated digital I/O modules and Modbus gateways. The 10-bit ADCC with computation automates averaging and oversampling for 12-bit-effective measurements on 4-20 mA loop inputs. The Windowed Watchdog Timer (WWDT) and CRC/SCAN memory scan detect firmware runaway and flash corruption, both required by IEC 61508 SIL-capable designs. The -40C to +125C grade handles cabinet interior thermal rise near heaters and power supplies.
Recomendado
Home Automation and Smart Home Hubs
The PIC18LF46K40-E/MV fits home automation hubs and edge nodes controlling lights, blinds, thermostats and security sensors. The XLP nanoWatt sleep mode keeps battery-powered door/window sensors dormant for years, waking on interrupt for sub-millisecond transmissions. Core Independent Peripherals (CLC, CWG, PWM) drive LED dimming, motor direction, and HVAC damper actuation without CPU intervention. The 10-bit ADC reads thermistor inputs for thermostat control, while UART and SPI connect to Wi-Fi or BLE modules. The 64KB Flash stores OTA bootloader plus Z-Wave, Zigbee or Matter protocol stacks. The -40C to +125C grade tolerates outdoor enclosures and attic installations.
Recomendado
Consumer Appliance Control Boards
The PIC18LF46K40-E/MV powers consumer appliance control boards for washing machines, dishwashers, refrigerators, and induction cooktops, where the -40C to +125C grade handles thermal stress near motors and heaters. The CWG generates dead-band-controlled complementary PWM for variable-frequency motor drive, while the ADCC digitizes motor current and temperature sensors. The 256B EEPROM stores user settings through power cycles without external memory. I2C and SPI connect to display modules and inverter gate drivers, and the 10-bit ADC monitors line voltage via resistive dividers. PPS allows the same firmware to be reused across appliance variants by remapping pins in software, simplifying SKU management for manufacturers.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para PIC18LF46K40-E/MV — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | PIC18LF46K40-I/MV | PIC18F46K40-E/MV | PIC18LF45K40-E/MV |
|---|---|---|---|---|
| Package | 40-pin UQFN (MV) 5x5 mm | 40-pin UQFN (MV) 5x5 mm - same | 40-pin UQFN (MV) 5x5 mm - same | 40-pin UQFN (MV) 5x5 mm - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash | 64 KB | 64 KB | 64 KB | 32 KB |
| RAM | 4 KB | 4 KB | 4 KB | 2 KB |
| Operating Voltage | 1.8 V to 3.6 V (LF) | 1.8 V to 3.6 V (LF) | 1.8 V to 5.5 V (F) | 1.8 V to 3.6 V (LF) |
| Operating Temperature | -40C to +125C (-E extended) | -40C to +85C (-I industrial) | -40C to +125C (-E extended) | -40C to +125C (-E extended) |
| Maximum CPU Speed | 64 MHz | 64 MHz | 64 MHz | 64 MHz |
| 10-bit ADCC | Yes (up to 35 channels) | Yes (up to 35 channels) | Yes (up to 35 channels) | Yes (up to 35 channels) |
Diferenciadores clave
- Lowest-power sleep current in 8-bit MCU class (frente a PIC18LF45K40-E/MV (32KB Flash variant))
- Highest memory in 40-pin UQFN PIC18 K40 family (frente a PIC18LF45K40-E/MV (32KB Flash / 2KB RAM))
- Extended -40C to +125C grade option (frente a PIC18LF46K40-I/MV (industrial -40C to +85C))
Notas de diseño
The 40-pin UQFN (MV) 5x5mm package has an exposed thermal pad on the underside that MUST be soldered to a ground-plane copper pad of at least equal footprint size, with thermal vias to inner copper layers. Without the thermal pad soldered, the device may overheat in continuous 64MHz operation or fail thermal-cycling reliability tests. Place decoupling capacitors (100nF plus 10uF bulk) within 2mm of each VDD pin pair (pin 28 is VDD; pins 7, 18, 19 are VSS) to minimize switching noise on internal rails.
For battery-powered designs, use the XLP Sleep mode with the Real-Time Clock and Calendar (RTCC) running from a 32.768 kHz crystal on SOSC pins to achieve the datasheet's nanoWatt XLP sleep current of ~50 nA typical. Configure all unused peripherals to OFF (PMDx registers) before sleep entry - leaving peripherals clocked can raise sleep current by orders of magnitude. The Windowed Watchdog Timer (WWDT) can wake the device periodically while the CPU stays in sleep, drawing only the WWDT and RTCC currents.
The -E suffix denotes -40C to +125C extended temperature grade; if your design only needs -40C to +85C industrial range, the -I grade (PIC18LF46K40-I/MV) is electrically identical and may have shorter lead times. Pin assignments from Peripheral Pin Select (PPS) MUST be configured in firmware immediately after reset and locked before any peripheral driver initializes - remapping mid-runtime is possible but requires careful peripheral shutdown ordering to avoid glitches on output compare and PWM modules.
Información de cumplimiento
RoHS compliant per Microchip product page; -E grade (-40C to +125C) is suitable for automotive body modules but is NOT AEC-Q100 qualified (no automotive Q100 part number). For AEC-Q100, consult Microchip's automotive-grade PIC18 portfolio.
