PIC18F43K20-E/P - 8KB Flash 8-bit MCU 48MHz 40-PDIP | Microchip
Référence : PIC18F43K20-E/P ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $3.84 | $3,84 |
| 10 | $3.46 | $34,60 |
| 100 | $3.07 | $307,00 |
| 500 | $2.65 | $1 325,00 |
| 1 000 | $2.21 | $2 210,00 |
PIC18F43K20-E/P Présentation
A microcontroller (MCU) is a single-chip computer that integrates a CPU, RAM, non-volatile program memory, peripherals, and I/O. The PIC18 family is Microchip's high-performance 8-bit line with a modified RISC architecture, optimized for C-compiler efficiency and widely adopted in consumer, industrial, and automotive body electronics. PIC18 K-series parts specifically add nanoWatt XLP technology for ultra-low sleep currents in battery-powered applications.
Key features of the PIC18F43K20 include 10-bit A/D converter with up to 14 channels, multiple communication peripherals (EUSART, MSSP for SPI/I2C), PWM modules, comparators, and configurable logic cells. The device operates from 1.8V to 3.6V and includes self-programming Flash with block erase support, making firmware updates practical in the field. The 48 MHz instruction rate delivers up to 12 MIPS throughput.
Typical applications include industrial control panels, sensor signal conditioning, low-power remote monitoring, USB-to-UART bridges (with companion parts), and legacy drop-in upgrades for earlier PIC18 designs. The extended temperature range supports under-hood automotive body controllers, outdoor metering, and HVAC peripherals.
When designing with this part, plan for decoupling with 100 nF ceramic capacitors on each VDD/VSS pair within 5 mm of the pins, follow Microchip's MPLAB ICD programming pinout, and use the ICD3 or PICkit 4 for in-circuit debugging. The 40-pin PDIP footprint remains the most user-friendly package for prototype work and breadboard integration.
Alternatives de remplacement direct pour PIC18F43K20-E/P — 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 PIC18F43K20-E/P (même facteur de forme et même empreinte) — différant par Operating Temperature, Package, ADC, Timers, MSL Level.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
PIC18F43K20-I/P
✅ Remplacement direct✓ En stock
$1.95 / unité
Voir la fiche technique →PIC18F4320-I/P
✅ Remplacement direct✓ En stock
$4.05 / unité
Voir la fiche technique →PIC18F4220-I/P
✅ Remplacement direct✓ En stock
$4.78 / unité
Voir la fiche technique →PIC18F4221-I/P
✅ Remplacement direct✓ En stock
$3.15 / unité
Voir la fiche technique →PIC18F43K20-E/P Valeurs maximales et caractéristiques électriques
| Core | PIC 8-bit, modified Harvard RISC |
| Program Memory | 8 KB Flash (4K x 16) |
| Data Memory (SRAM) | 512 bytes |
| EEPROM | 256 bytes |
| Maximum CPU Frequency | 48 MHz |
| Instruction Cycle | 83 ns (at 48 MHz) |
| Throughput | 12 MIPS |
| Operating Voltage | 1.8 V to 3.6 V |
| I/O Pins | 36 |
| ADC | 10-bit, up to 14 channels |
| Timers | 4 (Timer0/1/2/3) |
| Communication | 1x EUSART, 1x MSSP (SPI/I2C) |
| PWM Modules | 2x CCP, 1x ECCP |
| Température de fonctionnement | -40C to +125C (Extended grade) |
| Boîtier | 40-pin PDIP (0.600", 15.24 mm) |
| Type de montage | Through-Hole |
| Niveau MSL | 1 (not moisture sensitive) |
| Statut RoHS | Compliant |
Configuration des broches de PIC18F43K20-E/P
| Broche 1 | MCLR — Master Clear (reset) input, active low |
| Broche 2 | RA0/AN0 — Digital I/O / Analog input channel 0 |
| Broche 3 | RA1/AN1 — Digital I/O / Analog input channel 1 |
| Broche 4 | RA2/AN2/VREF- — Digital I/O / Analog input 2 / ADC VREF- |
| Broche 5 | RA3/AN3/VREF+ — Digital I/O / Analog input 3 / ADC VREF+ |
| Broche 6 | RA4/AN4 — Digital I/O / Analog input 4 (open-drain) |
| Broche 7 | RA5/AN5 — Digital I/O / Analog input 5 |
| Broche 8 | RE0/AN6 — Digital I/O / Analog input 6 |
| Broche 9 | RE1/AN7 — Digital I/O / Analog input 7 |
| Broche 10 | RE2/AN8 — Digital I/O / Analog input 8 |
| Broche 11 | VDD — Positive power supply |
| Broche 12 | VSS — Ground reference |
| Broche 13 | OSC1/RA7 — Oscillator input / Digital I/O |
| Broche 14 | OSC2/RA6 — Oscillator output / Digital I/O |
| Broche 15 | RC0 — Digital I/O port C |
| Broche 16 | RC1 — Digital I/O port C |
| Broche 17 | RC2 — Digital I/O port C |
| Broche 18 | RC3 — Digital I/O port C |
| Broche 19 | RD0 — Digital I/O port D |
| Broche 20 | RD1 — Digital I/O port D |
| Broche 21 | RD2 — Digital I/O port D |
| Broche 22 | RD3 — Digital I/O port D |
| Broche 23 | RC4 — Digital I/O port C |
| Broche 24 | RC5 — Digital I/O port C |
| Broche 25 | RC6 — Digital I/O port C |
| Broche 26 | RC7 — Digital I/O port C |
| Broche 27 | RD4 — Digital I/O port D |
| Broche 28 | RD5 — Digital I/O port D |
| Broche 29 | RD6 — Digital I/O port D |
| Broche 30 | RD7 — Digital I/O port D |
| Broche 31 | VSS — Ground reference |
| Broche 32 | VDD — Positive power supply |
| Broche 33 | RB0/INT0 — Digital I/O / External interrupt 0 |
| Broche 34 | RB1/INT1 — Digital I/O / External interrupt 1 |
| Broche 35 | RB2/INT2 — Digital I/O / External interrupt 2 |
| Broche 36 | RB3 — Digital I/O port B |
| Broche 37 | RB4 — Digital I/O port B |
| Broche 38 | RB5 — Digital I/O port B |
| Broche 39 | RB6/PGC — Digital I/O / ICSP clock |
| Broche 40 | RB7/PGD — Digital I/O / ICSP data |
Applications typiques
PIC18F43K20-E/P convient pour 6 applications: Battery-Powered IoT Sensor Nodes, Industrial Control Panels, Automotive Body Electronics, Consumer Electronics Prototyping, HVAC and Environmental Monitoring, Educational and Maker Projects.
Battery-Powered IoT Sensor Nodes
The PIC18F43K20-E/P is well-suited for battery-powered IoT sensor nodes due to its nanoWatt XLP technology delivering sub-100 nA sleep current, integrated 14-channel 10-bit ADC for direct sensor interfacing, and 48 MHz CPU enabling fast active-mode processing. In a typical temperature/humidity sensor node, the MCU wakes periodically via Watchdog Timer, performs a single ADC conversion in <100 us, transmits via the EUSART or MSSP peripheral, and returns to sleep, achieving multi-year battery life on a coin cell. The 8 KB Flash accommodates BLE stack fragments or LoRaWAN drivers when paired with an external transceiver.
Recommandé
Industrial Control Panels
The PIC18F43K20-E/P fits industrial control panel designs because of its extended -40C to +125C temperature grade and 36 I/O pins sufficient for keypad scanning, LED matrix driving, relay control, and 4-20 mA sensor inputs. The 10-bit ADC with internal 2.048V reference simplifies analog front-end design, eliminating external reference ICs. RS-485 communication via EUSART with external transceiver supports MODBUS RTU slave protocols. The 40-pin PDIP package is preferred in industrial settings for field-serviceability and through-hole reliability under vibration.
Recommandé
Automotive Body Electronics
The PIC18F43K20-E/P's extended temperature grade (-40C to +125C) and PWM modules make it suitable for non-safety automotive body applications such as interior lighting controllers, seat adjustment modules, and HVAC blend door actuators. The 2x CCP and 1x ECCP PWM peripherals generate precise control signals for LED dimming and motor speed control. With 14 ADC channels, multiple sensor inputs (temperature, position, current) can be monitored simultaneously. AEC-Q100 qualification is not present on this part, so it is appropriate only for non-safety body electronics, not for powertrain or ADAS.
Recommandé
Consumer Electronics Prototyping
The PIC18F43K20-E/P is widely used in consumer electronics prototyping because the 40-pin PDIP package fits standard breadboards and IC sockets, eliminating soldering for rapid iteration. Designers can test firmware on the PDIP variant and migrate to QFN/MLF packages for production. The 8 KB Flash and MPLAB X IDE support enable C-based development with the XC8 compiler. Common consumer applications include remote controls, toy electronics, smart home sensor hubs, and small appliance controllers.
Recommandé
HVAC and Environmental Monitoring
The PIC18F43K20-E/P supports HVAC and environmental monitoring applications through its 14-channel 10-bit ADC for temperature, humidity, and pressure sensor inputs, plus EUSART for MODBUS or BACnet connectivity to building management systems. nanoWatt XLP technology enables battery or Energy-Harvest-powered wireless sensor nodes that report air quality data. The 48 MHz core provides ample processing headroom for sensor linearization algorithms and filtering. Extended temperature operation ensures reliable performance in unconditioned spaces such as attics, crawlspaces, and outdoor enclosures.
Recommandé
Educational and Maker Projects
The PIC18F43K20-E/P is extensively used in educational settings and maker projects due to its DIP package compatibility with breadboards, MPLAB X IDE free development environment, and abundant online tutorials. The PICkit 4 programmer/debugger connects via ICSP pins for in-circuit debugging. With 8 KB Flash and a rich peripheral set, students can learn embedded C programming, ADC, PWM, and serial communication in a single platform. Universities and hobbyists commonly use this MCU for robotics controllers, data loggers, and capstone engineering projects.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour PIC18F43K20-E/P — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | PIC18F43K20-I/P | PIC18F4320-I/P | PIC18F4220-I/P | PIC18F4221-I/P |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 40-PDIP | 40-PDIP - same | 40-PDIP - same | 40-PDIP - same | 40-PDIP - same |
| Program Memory | 8 KB Flash | 8 KB Flash | 8 KB Flash | 4 KB Flash | 4 KB Flash |
| CPU Frequency | 48 MHz | 48 MHz | 40 MHz | 40 MHz | 40 MHz |
| Operating Voltage | 1.8V to 3.6V | 1.8V to 3.6V | 2.0V to 5.5V | 2.0V to 5.5V | 2.0V to 5.5V |
| Temperature Grade | -40C to +125C (Extended) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) |
| ADC | 10-bit, 14 channels | 10-bit, 14 channels | 10-bit, 13 channels | 10-bit, 13 channels | 10-bit, 13 channels |
| XLP Sleep Mode | Yes (nanoWatt) | Yes (nanoWatt) | No (legacy nanoWatt) | No (legacy nanoWatt) | No (legacy nanoWatt) |
Principaux différenciateurs
- Extended industrial temperature grade with nanoWatt XLP technology (vs PIC18F43K20-I/P)
- 40-pin PDIP package for through-hole prototyping and field-serviceability (vs PIC18F43K20-I/ML (QFN package))
- nanoWatt XLP technology with sub-100 nA sleep current (vs PIC18F4320-I/P)
Notes de conception
Place 100 nF decoupling capacitors on each VDD/VSS pair (pins 11/12 and 31/32) within 5 mm of the package. For noisy environments, add a bulk 10 uF tantalum or ceramic capacitor near the MCU. The PIC18F43K20-E/P operates from 1.8V to 3.6V; voltages above 3.6V will damage the part. Use the internal 2.048V reference for ADC to reduce external component count, or apply an external VREF+/VREF- on RA2/RA3 for higher accuracy applications. nanoWatt XLP sleep currents are specified with all peripherals disabled; ensure unused peripherals are clock-gated before entering sleep.
For 40-pin PDIP layout, route the ICSP pins (RB6/PGC and RB7/PGD) to a 6-pin header with the standard Microchip ICSP pinout: 1=MCLR, 2=VDD, 3=VSS, 4=PGD, 5=PGC, 6=NC. This enables in-circuit debugging with PICkit 4 or ICD3 without removing the MCU from the board. Keep analog traces (RA0-RA5, RE0-RE2) short and away from digital switching signals to minimize ADC noise coupling. Place the ADC reference capacitor (typically 0.1 uF) close to VREF+ pin.
Configuration bits must be set correctly: disable the Watchdog Timer (WDT) for predictable firmware development, or enable it with a long timeout for production; configure the oscillator mode (HS, XT, EC, or internal) before programming. The MCLR pin should be pulled up to VDD via a 10 kohm resistor for proper reset behavior. For low-power designs, ensure unused I/O pins are configured as outputs (driven low) or inputs with internal pull-ups enabled, never left floating. The MSSP peripheral requires explicit configuration of SDA/SCL direction for I2C mode.
Informations de conformité
RoHS and REACH compliant per Microchip product page. Not AEC-Q100 qualified - not recommended for safety-critical automotive applications. Lead-free and halogen-free packaging per Microchip environmental specifications.
