PIC18F4423-E/ML - 8-bit MCU, 16KB Flash, 40MHz, 44-VQFN | Microchip
N.º da peça: PIC18F4423-E/ML ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $4.4431 | $4,44 |
| 10 | $4 | $40,00 |
| 100 | $3.62 | $362,00 |
| 500 | $3.2 | $1.600,00 |
| 1.000 | $2.85 | $2.850,00 |
PIC18F4423-E/ML Visão geral
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program and data memory, peripherals, and I/O onto one silicon die. Within the broader semiconductor hierarchy, an MCU is a sub-category of microprocessors, sitting alongside DSPs, FPGAs, and microcontrollers in the embedded compute taxonomy. PIC microcontrollers from Microchip use a Harvard RISC architecture with separate program and data buses, executing most instructions in a single cycle. The PIC18 family is Microchip's high-performance 8-bit line, providing C-compiler-friendly architecture, hardware multiply, and rich peripheral integration.
The PIC18F4423 operates from 4.2 V to 5.5 V and includes peripherals such as an enhanced USART, MSSP (SPI/I2C), Capture/Compare/PWM modules, 10-bit ADC with up to 13 channels, and nanoWatt features including idle, sleep, and run-time power modes. Its 16 KB flash supports self-programming and ICSP (In-Circuit Serial Programming). The 'F' designation means flash-based program memory, allowing field-upgradeable firmware.
Architecturally, the PIC18F4423 uses a 16-bit instruction word with 8-bit data path, and supports a 31-level hardware stack and software-managed memory model. The 10-bit ADC samples at rates suitable for control loops and slow analog sensing; the PWM/CEC pins support motor, lighting, and switching power control.
Typical applications include industrial control, sensor interfaces, low-end motor control, consumer appliances, and human-machine interfaces (HMI). The 40 MHz clock and 36 I/O lines support moderate-density designs requiring multiple analog inputs and serial communication.
For designers, the extended temperature grade ('-E') allows automotive and industrial environments without special screening, while the 44-VQFN package is footprint-compatible with several other PIC18F44xx devices, easing PCB reuse across variants. Note that PIC18F devices with the same pin count but different memory sizes in the same package are usually drop-in compatible with code adjustments only.
This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the manufacturer datasheet alone.
Alternativas drop-in para PIC18F4423-E/ML — 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 PIC18F4423-E/ML (mesmo formato e footprint) — diferindo em Operating Temperature, Package, Communication, Core Architecture, Program Memory (Flash).
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
PIC18F4423-I/ML
✅ Drop-In✓ Em estoque
$4.05 / unidade
Ver ficha técnica →PIC18F43K22-E/ML
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
PIC18F4420-E/ML
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
PIC18LF4423-I/ML
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
PIC18F43K20-E/ML
✅ Drop-In✓ Em estoque
$1.38 / unidade
Ver ficha técnica →PIC18F4423-E/ML Classificações máximas e características elétricas
| Core Architecture | PIC18 (8-bit Harvard RISC) |
| Program Memory Type | Flash |
| Program Memory Size | 16 KB (8K x 16) |
| RAM Size | 768 bytes |
| EEPROM Size | 256 bytes |
| Maximum CPU Frequency | 40 MHz |
| Performance | 10 MIPS |
| Supply Voltage (VDD) | 4.2 V to 5.5 V |
| I/O Pins | 36 |
| ADC | 10-bit, up to 13 channels |
| Package Type | 44-pin VQFN (8x8 mm) with exposed pad |
| Tipo de montagem | Surface Mount |
| Temperatura de operação | -40C to +125C (extended grade, '-E') |
| Communication Interfaces | UART, SPI, I2C (MSSP), Enhanced USART |
| Timers/PWM | Capture/Compare/PWM modules |
| Status RoHS | Compliant |
| Nível MSL | 3 (168 hours) |
Configuração de pinos do PIC18F4423-E/ML
| Pino 1 | RA0/AN0 — Digital I/O / Analog input channel 0 |
| Pino 2 | RA1/AN1 — Digital I/O / Analog input channel 1 |
| Pino 3 | RA2/AN2/VREF- — Digital I/O / Analog input channel 2 / ADC VREF- |
| Pino 4 | RA3/AN3/VREF+ — Digital I/O / Analog input channel 3 / ADC VREF+ |
| Pino 5 | RA4/T0CKI — Digital I/O / Timer0 clock input |
| Pino 6 | RA5/AN4/SS — Digital I/O / Analog input / SPI slave select |
| Pino 7 | RE0/RD — Digital I/O / Parallel port read control |
| Pino 8 | RE1/WR — Digital I/O / Parallel port write control |
| Pino 9 | RE2/CS — Digital I/O / Parallel port chip select |
| Pino 10 | VDD — Positive power supply (4.2V to 5.5V) |
| Pino 11 | VSS — Ground reference |
| Pino 12 | OSC1/CLKI — Crystal oscillator input / external clock |
| Pino 13 | OSC2/CLKO — Crystal oscillator output |
| Pino 14 | RC0/T1OSO — Digital I/O / Timer1 oscillator output |
| Pino 15 | RC1/T1OSI/CCP2 — Digital I/O / Timer1 oscillator input / Capture/Compare/PWM 2 |
| Pino 16 | RC2/CCP1 — Digital I/O / Capture/Compare/PWM 1 |
| Pino 17 | RC3/SCK/SCL — Digital I/O / SPI clock / I2C clock |
| Pino 18 | RD0/PSP0 — Digital I/O / Parallel slave port bit 0 |
| Pino 19 | RD1/PSP1 — Digital I/O / Parallel slave port bit 1 |
| Pino 20 | RD2/PSP2 — Digital I/O / Parallel slave port bit 2 |
| Pino 21 | RD3/PSP3 — Digital I/O / Parallel slave port bit 3 |
| Pino 22 | RC4/SDI/SDA — Digital I/O / SPI data in / I2C data |
| Pino 23 | RC5/SDO — Digital I/O / SPI data out |
| Pino 24 | RC6/TX/CK — Digital I/O / USART TX / clock |
| Pino 25 | RC7/RX/DT — Digital I/O / USART RX / data |
| Pino 26 | RD4/PSP4 — Digital I/O / Parallel slave port bit 4 |
| Pino 27 | RD5/PSP5 — Digital I/O / Parallel slave port bit 5 |
| Pino 28 | RD6/PSP6 — Digital I/O / Parallel slave port bit 6 |
| Pino 29 | RD7/PSP7 — Digital I/O / Parallel slave port bit 7 |
| Pino 30 | VSS — Ground reference |
| Pino 31 | VDD — Positive power supply (4.2V to 5.5V) |
| Pino 32 | RB0/INT0 — Digital I/O / External interrupt 0 |
| Pino 33 | RB1/INT1 — Digital I/O / External interrupt 1 |
| Pino 34 | RB2/INT2 — Digital I/O / External interrupt 2 |
| Pino 35 | RB3/INT3/CCP2 — Digital I/O / External interrupt 3 / CCP2 alternate |
| Pino 36 | RB4 — Digital I/O / interrupt-on-change |
| Pino 37 | RB5 — Digital I/O / interrupt-on-change |
| Pino 38 | RB6/PGC — Digital I/O / ICSP clock |
| Pino 39 | RB7/PGD — Digital I/O / ICSP data |
| Pino 40 | MCLR/VPP — Master clear reset / programming voltage |
| Pino 41 | RA6 — Digital I/O |
| Pino 42 | RA7 — Digital I/O |
| Pino 43 | VSS — Ground reference |
| Pino 44 | VDD — Positive power supply (4.2V to 5.5V) |
Aplicações típicas
PIC18F4423-E/ML é adequado para 6 aplicaçãos: Industrial Sensor Interface, Low-End Motor Control, Consumer Appliance Control, Automotive Body Electronics (Non-AEC-Q100), Human-Machine Interface (HMI) Controller, Smart Energy / Metering.
Industrial Sensor Interface
The PIC18F4423-E/ML's 13-channel 10-bit ADC and 36 I/O lines let it interface to multiple analog sensors (temperature, pressure, flow) and digital actuators in industrial control panels. Its extended -40C to +125C temperature grade supports factory-floor environments, while the 40 MHz core handles PID control loops at sub-millisecond intervals. The UART/SPI/I2C peripherals connect to HMIs, displays, and supervisory PLCs without external transceivers.
Recomendado
Low-End Motor Control
The PIC18F4423-E/ML's Capture/Compare/PWM modules and 10-bit ADC make it suitable for BLDC, stepper, and DC motor control at moderate speeds. The 40 MHz CPU executes FOC or trapezoidal commutation routines with adequate headroom, while the 16 KB flash holds lookup tables and PID parameters. Industrial grade temperature rating supports motor housings exposed to high ambient heat.
Recomendado
Consumer Appliance Control
The PIC18F4423-E/ML's 36 I/O and nanoWatt power management suit white-goods controllers (washing machines, dishwashers, ovens) where multiple relays, keypads, and display drivers interface to a single MCU. The 10-bit ADC reads temperature probes, while PWM outputs control valve actuators. Extended temperature operation tolerates steam and heat near oven enclosures.
Recomendado
Automotive Body Electronics (Non-AEC-Q100)
The PIC18F4423-E/ML with extended temperature grade is used in non-safety automotive body electronics such as seat controllers, mirror adjusters, and interior lighting. Its PWM outputs drive LED backlights and motor actuators, while the ADC reads potentiometers and current shunts. Note: For AEC-Q100-qualified automotive designs, the equivalent automotive-grade PIC18F variant must be selected.
Recomendado
Human-Machine Interface (HMI) Controller
The PIC18F4423-E/ML drives character LCD or simple graphic OLED displays through SPI, scans keypads via I/O expansion, and reads rotary encoders through timer-capture inputs. Its 40 MHz core refreshes displays at 60 Hz without flicker, while the 768-byte RAM holds UI strings and screen buffers. The 16 KB flash accommodates multi-language menus and state machines.
Recomendado
Smart Energy / Metering
The PIC18F4423-E/ML's 10-bit ADC samples current and voltage from shunt resistors and potential dividers for basic single-phase energy metering. Its UART connects to GSM/GPRS or LoRa modules for AMI backhaul, while EEPROM stores calibration constants and tariff tables. Extended temperature rating allows outdoor meter enclosures under direct sunlight.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para PIC18F4423-E/ML — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | PIC18F4423-I/ML | PIC18F43K22-E/ML | PIC18F4420-E/ML | PIC18LF4423-I/ML | PIC18F43K20-E/ML |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-VQFN (8x8 mm) | 44-VQFN (8x8 mm) - same | 44-VQFN (8x8 mm) - same | 44-VQFN (8x8 mm) - same | 44-VQFN (8x8 mm) - same | 44-VQFN (8x8 mm) - same |
| Flash Memory | 16 KB | 16 KB | 16 KB | 16 KB | 16 KB | 8 KB (-50%) |
| RAM Size | 768 bytes | 768 bytes | 1.5 KB | 768 bytes | 768 bytes | 512 bytes |
| Maximum Clock Speed | 40 MHz | 40 MHz | 64 MHz | 40 MHz | 40 MHz | 64 MHz |
| Supply Voltage | 4.2 V to 5.5 V | 4.2 V to 5.5 V | 2.3 V to 5.5 V | 2.0 V to 5.5 V | 2.0 V to 3.6 V | 2.3 V to 5.5 V |
| Temperature Grade | -40C to +125C (E) | -40C to +85C (I) | -40C to +125C (E) | -40C to +125C (E) | -40C to +85C (I) | -40C to +125C (E) |
| ADC Resolution | 10-bit | 10-bit | 12-bit | 10-bit | 10-bit | 10-bit |
| Low-Power Mode | nanoWatt | nanoWatt | XLP (<50 nA sleep) | Standard | nanoWatt | XLP (<50 nA sleep) |
Principais diferenciais
- Extended industrial temperature grade (-40C to +125C) (vs PIC18F4423-I/ML)
- nanoWatt power management features (vs PIC18F4420-E/ML)
- Pin-compatible upgrade path to XLP family (vs PIC18F43K22-E/ML)
Notas de projeto
Decouple VDD/VSS pairs with 100 nF ceramic capacitors placed within 3 mm of each VDD pin (the PIC18F4423-E/ML has three VDD pins on pins 10, 31, and 44). Add a bulk 10 uF tantalum or aluminum-polymer capacitor on the main supply rail. For noise-sensitive analog designs, separate analog VDD (AVDD) and digital VDD (DVDD) planes with ferrite beads, and use star-ground routing for the ADC reference pins (RA2/VREF- and RA3/VREF+).
The 44-VQFN package requires a 0.5 mm pitch land pattern with a central thermal pad. The exposed pad (EP) must be soldered to a copper pour on the PCB for thermal dissipation and ground integrity. Connect the EP to the ground plane with at least 9 thermal vias (0.3 mm drill) to reduce thermal resistance. Per IPC-7351, follow Microchip's recommended land pattern document for proper solder joint reliability.
Do not connect the MCLR pin (pin 40) directly to VDD. Use a 10 kohm pull-up resistor and a 100 nF capacitor to ground for proper reset behavior. For ICSP programming, leave RB6/PGC and RB7/PGD accessible. Avoid using PORTC<3:0> as inputs during reset - they default to analog mode and may cause excessive current draw if left floating. Configure unused I/O pins as outputs driving low to minimize quiescent current.
Estimated: at maximum operating frequency (40 MHz) and 5.5 V supply, the PIC18F4423-E/ML core current is approximately 16 mA, plus peripheral current (ADC, timers). With the 44-VQFN thermal pad connected to 1 square inch of copper pour, theta_JA is approximately 35 C/W, allowing 0.7 W dissipation at 25 C ambient. At 125 C ambient, derate by 70% to maintain reliability. Use the exposed pad to maximize heat dissipation.
Route the crystal traces (OSC1, OSC2) short and direct, with guard traces to ground on both sides. Keep ADC analog signals (AN0-AN13) away from switching digital lines; if cross-over is unavoidable, use perpendicular routing. Place the voltage reference bypass capacitor (100 nF) within 5 mm of the VREF+/VREF- pins. Follow Microchip AN1254 (ADC design) for optimal 10-bit ADC performance.
Informações de conformidade
RoHS and REACH compliant per Microchip product declarations and LCSC/Heisener distributor listings. Not AEC-Q100 qualified; use PIC18F automotive-grade variants for full automotive compliance. Lead-free terminations, MSL-3 (168 hours) per JEDEC J-STD-020.
