PIC18F46K40-E/P - 8-Bit 64MHz XLP MCU, 64KB Flash, 40-PDIP
N.º de pieza: PIC18F46K40-E/P ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $3.84 | $3,84 |
| 10 | $3.45 | $34,50 |
| 100 | $2.95 | $295,00 |
| 500 | $2.62 | $1.310,00 |
| 1.000 | $2.3 | $2.300,00 |
PIC18F46K40-E/P Descripción general
A microcontroller (MCU) is a single-chip computer containing a CPU, program and data memory, and integrated peripherals. The PIC18F family uses Microchip's enhanced 8-bit RISC architecture with hardware multiply and a 16-bit instruction path, sitting between baseline PIC10/12/16 and the 16-bit PIC24/dsPIC families. Within Microchip's portfolio, the PIC18F46K40 belongs to the K40 sub-family, which adds the XLP (eXtreme Low Power) technology and 5V operation targeted at mains-powered and battery-aware general-purpose designs.
Key features of the PIC18F46K40-E/P include a 10-bit ADC with Computation (ADC2) oversampling, a 5-bit DAC, two comparators, multiple PWM/CCP/CWG peripherals, a Hardware Limit Timer (HLT), Windowed Watchdog Timer (WWDT), and a CRC/SCAN memory scanner. Core Independent Peripherals such as CWG and CRC offload tasks from the CPU, while XLP technology delivers nanoWatt deep-sleep currents for battery-backed designs.
Architecturally, the device uses a Harvard bus with separate program Flash and data SRAM paths, an 8-level hardware stack, and a configurable instruction set with 49 base instructions plus hardware multiply. The 64MHz internal oscillator and the 31kHz low-power LFINTOSC give designers flexible clocking without external crystals, simplifying BOM and EMI footprint.
Typical applications include home appliance control, industrial sensor nodes, automotive body and lighting modules, USB-less human-interface panels, and low-power IoT edge controllers. Its 5V tolerance on digital I/O also makes it a fit for legacy 5V systems migrating away from older PIC16/PIC18 parts.
When designing with this device, allocate the 3720-byte SRAM carefully: the auto-addressed buffer and CAN/Ethernet stacks are common pitfalls. Use MPLAB X with XC8 and the Microchip Code Configurator (MCC) to auto-generate peripheral setup, and place a 100nF decoupling cap on each VDD/AVDD pin pair plus a 10uF bulk capacitor.
Alternativas directas para PIC18F46K40-E/P — 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 PIC18F46K40-E/P (mismo factor de forma y huella) — difiere en Package, Program Memory (Flash), ADC, Operating Temperature, DAC.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
PIC18F46K40-I/P
✅ Sustitución directa✓ En stock
$2.4 / unidad
Ver hoja de datos →PIC18F46K42-I/P
✅ Sustitución directa ⚠️ Especificaciones sin verificar📋 Alternativa de referencia (no en el catálogo)
PIC18F45Q43-I/P
✅ Sustitución directa ⚠️ Especificaciones sin verificar✓ En stock
$2.62 / unidad
Ver hoja de datos →PIC18F46K40-E/P Valores máximos y características eléctricas
| Core Architecture | PIC18 (8-bit RISC, enhanced) |
| Program Memory (Flash) | 64 KB (32K x 16 words) |
| Data SRAM | 3720 bytes |
| Data EEPROM | 1024 bytes |
| Maximum CPU Clock | 64 MHz |
| Operating Voltage | 2.3 V to 5.5 V |
| ADC | 10-bit ADC2 with Computation, up to 35 channels |
| DAC | 5-bit, 1 channel |
| Comparators | 2 |
| PWM / CCP / CWG | Multiple PWM, 3 CCP, 1 CWG |
| Hardware Limit Timer (HLT) | Yes |
| Windowed WDT | Yes (WWDT) |
| CRC / Memory SCAN | Yes |
| I/O Pins | 36 |
| Encapsulado | 40-pin PDIP (through-hole) |
| Tipo de montaje | Through-Hole |
| Temperature Grade (E suffix) | -40C to +125C (Extended Industrial) |
| Estado RoHS | Compliant |
| Lead-Free / MSL | Lead-free, MSL 1 |
Configuración de pines de PIC18F46K40-E/P
| Pin 1 | RE3/MCLR — Master Clear (Reset) input, also digital input only on RE3 |
| Pin 2 | RA0 — PORTA bit 0, analog/digital I/O |
| Pin 3 | RA1 — PORTA bit 1, analog/digital I/O |
| Pin 4 | RA2 — PORTA bit 2, analog/digital I/O |
| Pin 5 | RA3 — PORTA bit 3, analog/digital I/O |
| Pin 6 | RA4 — PORTA bit 4, analog/digital I/O |
| Pin 7 | RA5 — PORTA bit 5, analog/digital I/O |
| Pin 8 | RA6 — PORTA bit 6, analog/digital I/O |
| Pin 9 | RA7 — PORTA bit 7, analog/digital I/O |
| Pin 10 | RE0 — PORTE bit 0, analog/digital I/O |
| Pin 11 | RE1 — PORTE bit 1, analog/digital I/O |
| Pin 12 | RE2 — PORTE bit 2, analog/digital I/O |
| Pin 13 | AVDD — Analog supply voltage |
| Pin 14 | AVSS — Analog ground |
| Pin 15 | OSC1/CLKIN — External clock input or crystal connection |
| Pin 16 | OSC2/CLKOUT — External clock output or crystal connection |
| Pin 17 | RC0 — PORTC bit 0, analog/digital I/O |
| Pin 18 | RC1 — PORTC bit 1, analog/digital I/O |
| Pin 19 | RC2 — PORTC bit 2, analog/digital I/O |
| Pin 20 | RC3 — PORTC bit 3, analog/digital I/O |
| Pin 21 | RC4 — PORTC bit 4, analog/digital I/O |
| Pin 22 | RC5 — PORTC bit 5, analog/digital I/O |
| Pin 23 | RC6 — PORTC bit 6, analog/digital I/O |
| Pin 24 | RC7 — PORTC bit 7, analog/digital I/O |
| Pin 25 | RB0 — PORTB bit 0, analog/digital I/O |
| Pin 26 | RB1 — PORTB bit 1, analog/digital I/O |
| Pin 27 | RB2 — PORTB bit 2, analog/digital I/O |
| Pin 28 | RB3 — PORTB bit 3, analog/digital I/O |
| Pin 29 | RB4 — PORTB bit 4, analog/digital I/O |
| Pin 30 | RB5 — PORTB bit 5, analog/digital I/O |
| Pin 31 | RB6 — PORTB bit 6, analog/digital I/O, ICSCLK |
| Pin 32 | RB7 — PORTB bit 7, analog/digital I/O, ICSDAT |
| Pin 33 | VSS — Ground reference |
| Pin 34 | VDD — Positive supply voltage |
| Pin 35 | RD0 — PORTD bit 0, digital I/O |
| Pin 36 | RD1 — PORTD bit 1, digital I/O |
| Pin 37 | RD2 — PORTD bit 2, digital I/O |
| Pin 38 | RD3 — PORTD bit 3, digital I/O |
| Pin 39 | RD4 — PORTD bit 4, digital I/O |
| Pin 40 | RD5/RD6/RD7 — PORTD bits 5-7, digital I/O |
Aplicaciones típicas
PIC18F46K40-E/P es adecuado para 6 aplicacións: Home Appliance Control, Industrial Sensor Nodes, Automotive Body & Lighting Modules, Human-Machine Interface Panels, Battery-Backed IoT Edge Nodes, Legacy 5V System Migration.
Home Appliance Control
The PIC18F46K40-E/P fits washing-machine, dishwasher, and microwave control boards because its 64MHz PIC18 core runs motor-control PWM loops while XLP deep-sleep keeps standby consumption under 1uA. The 5V-tolerant I/O directly drives triac and relay drivers without level shifters, and the 64KB Flash hosts a state-machine plus UART bootloader for service updates.
Recomendado
Industrial Sensor Nodes
With 64KB Flash and 3720 bytes SRAM, the PIC18F46K40-E/P runs Modbus RTU or IO-Link-like protocols on 4-20mA loops. The 10-bit ADC2 with Computation performs oversampling for thermocouple or strain-gauge conditioning, while the Hardware Limit Timer (HLT) trips a safety shutdown without CPU intervention. Industrial -40C to +125C rating supports factory-floor deployment.
Recomendado
Automotive Body & Lighting Modules
The PIC18F46K40-E/P drives LED arrays and body controllers via PWM, CWG, and CCP peripherals with deterministic 64MHz timing. The Extended -40C to +125C temperature grade handles under-dash environments, while the CRC/SCAN block validates firmware at boot for ASIL-conscious subsystems. Multiple PWM channels enable sequential LED indicators and RGB ambience lighting.
Recomendado
Human-Machine Interface Panels
The PIC18F46K40-E/P drives 7-segment, character LCD, and small TFT panels through PWM-driven LED backlights and software-driven segment scanning. The 36 I/O pins directly interface keypad matrices up to 4x4, while the 5-bit DAC generates audio feedback tones. The 64KB Flash accommodates bitmapped font tables and multilingual menu trees.
Recomendado
Battery-Backed IoT Edge Nodes
XLP nanoWatt technology makes the PIC18F46K40-E/P suitable for battery-powered edge sensors that wake on interrupt, sample an analog channel with ADC2, transmit over UART, and return to deep-sleep. The Windowed Watchdog (WWDT) detects firmware lockups without external components, while EEPROM stores calibration and threshold values across power cycles.
Recomendado
Legacy 5V System Migration
The PIC18F46K40-E/P's 5V-tolerant digital I/O and 2.3V to 5.5V supply allow direct replacement of legacy PIC16F877A, PIC18F4520, and PIC18F4620 boards without reworking the 5V rail. The CWG and PWM block upgrade motor and power-supply control loops, while the 64KB Flash accommodates a modern firmware image with bootloader. This preserves existing 5V analog signal chains.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para PIC18F46K40-E/P — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | PIC18F46K40-I/P | PIC18F46K42-I/P | PIC18F45Q43-I/P | PIC18F46K40-I/PT |
|---|---|---|---|---|---|
| Package | 40-pin PDIP | 40-pin PDIP - same | 40-pin PDIP - same | 40-pin PDIP - same | 44-pin TQFP - different |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Flash | 64 KB | 64 KB | 64 KB | 32 KB (note: lower than this part) | 64 KB |
| Maximum Clock | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz |
| Operating Voltage | 2.3 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 |
| Temperature Range | -40C to +125C (E) | -40C to +85C (I) | -40C to +85C (I) | -40C to +85C (I) | -40C to +85C (I) |
| XLP nanoWatt Sleep | Yes | Yes | Yes | Yes (lower) | Yes |
Diferenciadores clave
- Extended -40C to +125C temperature grade (frente a PIC18F46K40-I/P)
- 64KB Flash vs 32KB on Q43 family (frente a PIC18F45Q43-I/P)
- Through-hole PDIP for prototype and field service (frente a PIC18F46K40-I/PT)
Notas de diseño
Place a 100nF ceramic decoupling capacitor as close as possible to each VDD/AVDD pin pair (pins 13/14 and 33/34 on the 40-pin PDIP). Add a single 10uF bulk capacitor near the device to handle HFINTOSC bursts during 64MHz operation. Do not assume the internal LDO is sufficient - external decoupling is mandatory per the K40 datasheet layout guidelines.
Estimated: the 3720-byte SRAM is shared between the stack, the auto-allocated buffer, and user variables. A typical Modbus RTU stack consumes 800-1000 bytes, leaving 2700+ bytes for application - but careless malloc or large printf buffers can quickly exhaust this. Use the MPLAB X linker's stack-usage analysis to verify call depth fits the 8-level hardware stack.
Route the ICSPDAT (RB7) and ICSCLK (RB6) lines to the ICSP header with no series resistors and short traces to avoid ICD 4 programmer communication failures. Place the MCLR pull-up (typically 10kohm) close to pin 1 with a 100nF cap to ground for debounce. Keep analog traces (RA0-RA5) away from PWM signals to minimize ADC2 crosstalk.
Información de cumplimiento
RoHS and lead-free confirmed by Microchip product page. AEC-Q100 not qualified - this is a general-purpose MCU, not an automotive-qualified part. Halogen-free status not explicitly stated in the provided data.
