PIC18LF46K40-E/MV - 64KB Flash 8-bit MCU | Microchip | UQFN-40
Référence : PIC18LF46K40-E/MV ✓ Actif| Qté | Prix unitaire | 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 Présentation
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.
Alternatives de remplacement direct pour PIC18LF46K40-E/MV — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec PIC18LF46K40-E/MV (même facteur de forme et même empreinte) — différant par ADC, Comparators, Package, Program Memory (Flash), Communication.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
PIC18LF46K40-I/MV
✅ Remplacement direct✓ En stock
$1.78 / unité
Voir la fiche technique →PIC18F46K40-E/MV
✅ Remplacement direct✓ En stock
$1.86 / unité
Voir la fiche technique →PIC18LF45K40-E/MV
✅ Remplacement direct✓ En stock
$1.55 / unité
Voir la fiche technique →PIC18LF46K42-E/MV
✅ Remplacement direct ⚠️ Spécifications non vérifiées✓ En stock
$1.92 / unité
Voir la fiche technique →PIC18LF46K22-E/MV
✅ Remplacement direct ⚠️ Spécifications non vérifiées✓ En stock
$2.79 / unité
Voir la fiche technique →PIC18LF46K40-E/MV Valeurs maximales et caractéristiques électriques
| 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) |
| Boîtier | 40-pin UQFN (MV) 5x5 mm with exposed pad |
| Type de montage | Surface Mount |
| Statut RoHS | Compliant |
Configuration des broches de PIC18LF46K40-E/MV
| Broche 1 | RA5 — I/O port A bit 5 |
| Broche 2 | RA4 — I/O port A bit 4 |
| Broche 3 | RA3 — I/O port A bit 3 |
| Broche 4 | RA2 — I/O port A bit 2 |
| Broche 5 | RA1 — I/O port A bit 1 |
| Broche 6 | RA0 — I/O port A bit 0 |
| Broche 7 | VSS — Ground reference |
| Broche 8 | RA7 — I/O port A bit 7 |
| Broche 9 | RA6 — I/O port A bit 6 |
| Broche 10 | RC0 — I/O port C bit 0 |
| Broche 11 | RC1 — I/O port C bit 1 |
| Broche 12 | RC2 — I/O port C bit 2 |
| Broche 13 | RC3 — I/O port C bit 3 |
| Broche 14 | RC4 — I/O port C bit 4 |
| Broche 15 | RC5 — I/O port C bit 5 |
| Broche 16 | RC6 — I/O port C bit 6 |
| Broche 17 | RC7 — I/O port C bit 7 |
| Broche 18 | VSS — Ground reference |
| Broche 19 | VSS — Ground reference |
| Broche 20 | RB7 — I/O port B bit 7 |
| Broche 21 | RB6 — I/O port B bit 6 |
| Broche 22 | RB5 — I/O port B bit 5 |
| Broche 23 | RB4 — I/O port B bit 4 |
| Broche 24 | RB3 — I/O port B bit 3 |
| Broche 25 | RB2 — I/O port B bit 2 |
| Broche 26 | RB1 — I/O port B bit 1 |
| Broche 27 | RB0 — I/O port B bit 0 |
| Broche 28 | VDD — Positive supply voltage |
| Broche 29 | RD0 — I/O port D bit 0 |
| Broche 30 | RD1 — I/O port D bit 1 |
| Broche 31 | RD2 — I/O port D bit 2 |
| Broche 32 | RD3 — I/O port D bit 3 |
| Broche 33 | RD4 — I/O port D bit 4 |
| Broche 34 | RD5 — I/O port D bit 5 |
| Broche 35 | RD6 — I/O port D bit 6 |
| Broche 36 | RD7 — I/O port D bit 7 |
| Broche 37 | RE0 — I/O port E bit 0 |
| Broche 38 | RE1 — I/O port E bit 1 |
| Broche 39 | RE2 — I/O port E bit 2 |
| Broche 40 | RE3 — I/O port E bit 3 |
Applications typiques
PIC18LF46K40-E/MV convient pour 6 applications: 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).
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour PIC18LF46K40-E/MV — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | 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) |
Principaux différenciateurs
- Lowest-power sleep current in 8-bit MCU class (vs PIC18LF45K40-E/MV (32KB Flash variant))
- Highest memory in 40-pin UQFN PIC18 K40 family (vs PIC18LF45K40-E/MV (32KB Flash / 2KB RAM))
- Extended -40C to +125C grade option (vs PIC18LF46K40-I/MV (industrial -40C to +85C))
Notes de conception
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.
Informations de conformité
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.
