PIC18F47K42-E/P - 128KB Flash 8-Bit MCU 64MHz | Microchip
MPN: PIC18F47K42-E/P ✓ Hoạt độngPIC18F47K42-E/P Tóm tắt
A microcontroller (MCU) is a single-chip computer containing a CPU core, volatile and non-volatile memory, digital and analog peripherals, and I/O. PIC18F-series devices sit within Microchip's 8-bit PIC architecture hierarchy: PIC10/12/16/18 family -> 8-bit MCU -> microcontroller -> embedded processor -> semiconductor. The PIC18FxxK42 sub-family emphasizes XLP (eXtreme Low Power) technology, with nanoWatt XLP sleep currents below 100 nA in deep sleep, and Active mode currents around 5 mA at full CPU speed, making it well suited to battery-powered and energy-harvesting designs.
Key differentiating features include the unique combination of DMA-driven peripheral operation that offloads the core, a vectored interrupt controller for deterministic response, a 12-bit ADC2 with automated averaging and threshold comparison, and a peripheral pin-select (PPS) system that routes digital functions to nearly any I/O pin. The device offers 36 interrupt sources, a 32-bit CRC scanner, and a windowed watchdog timer (WWDT).
Typical applications include industrial sensor conditioning, low-power IoT sensor nodes, motor control with the PWM and 12-bit ADC, automotive body and interior subsystems, white goods and HVAC control, and home appliances. The wide operating voltage and temperature range (extended -40C to +125C) makes the part suitable for both commercial and industrial deployment.
When designing with this device, plan the PPS routing early to avoid conflicts, and budget for the programming/debug interface (PGC/PGD). Microchip's MPLAB X IDE with XC8 compiler and the Curiosity Nano (DM182028) evaluation board dramatically accelerate bring-up. This page synthesizes distributor pricing, drop-in PIC18F47K42 variants, and CIP design notes not found in the bare manufacturer datasheet.
Bộ thay thế dễ dàng lắp đặt cho PIC18F47K42-E/P — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với PIC18F47K42-E/P (cùng hình factor và footprint) — khác nhau ở Core Architecture, ADC, PWM Channels, Package, DAC.
PIC18F47K42-I/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F47K42-E/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F47K42T-I/P
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
PIC18F47K42-I/PT
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC18F46Q84-I/P
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC18F46K42-E/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F47K42-E/P Tỷ lệ tối đa & tính chất điện
| Core Architecture | 8-bit PIC18 RISC |
| Program Memory (Flash) | 128 KB |
| RAM | 8 KB |
| EEPROM | 256 B |
| Maximum CPU Speed | 64 MHz |
| MIPS (DMIPS equivalent, 8-bit) | 16 MIPS |
| Operating Voltage Range | 2.3 V to 5.5 V |
| ADC | 12-bit ADC2 with Computation, up to 35 channels |
| DAC | 5-bit DAC, 1x module |
| Comparators | 2x with selectable reference |
| PWM Channels | Multiple CCP/ECCP/16-bit PWM |
| DMA Channels | 4x DMA |
| I/O Pins | 36 (approximately) |
| Peripheral Pin Select (PPS) | Yes |
| Vectored Interrupts | Yes |
| Windowed Watchdog Timer (WWDT) | Yes |
| CRC Scanner | 32-bit hardware |
| UART / SPI / I2C | Multiple (EUSART, SPI, I2C) |
| Hộp | 40-pin PDIP (R-PDIP-T40) |
| Kiểu lắp đặt | Through-Hole |
| Khoảng nhiệt độ hoạt động | -40C to +125C (Extended, -E suffix) |
| Trạng thái RoHS | Compliant |
Cấu hình chân PIC18F47K42-E/P
| Chân 1 | RE3/MCLR — Digital I/O / Master Clear (reset) input |
| Chân 2 | RA0 — PORTA bit 0 / analog input |
| Chân 3 | RA1 — PORTA bit 1 / analog input |
| Chân 4 | RA2 — PORTA bit 2 / analog input |
| Chân 5 | RA3 — PORTA bit 3 / analog input / reference voltage |
| Chân 6 | RA4 — PORTA bit 4 |
| Chân 7 | RA5 — PORTA bit 5 |
| Chân 8 | RA6 — PORTA bit 6 |
| Chân 9 | RA7 — PORTA bit 7 |
| Chân 10 | RE0 — PORTE bit 0 |
| Chân 11 | RE1 — PORTE bit 1 |
| Chân 12 | RE2 — PORTE bit 2 |
| Chân 13 | VDD — Positive supply voltage |
| Chân 14 | VSS — Ground reference |
| Chân 15 | RB0 — PORTB bit 0 / analog input |
| Chân 16 | RB1 — PORTB bit 1 / analog input |
| Chân 17 | RB2 — PORTB bit 2 / analog input |
| Chân 18 | RB3 — PORTB bit 3 / analog input |
| Chân 19 | RB4 — PORTB bit 4 |
| Chân 20 | RB5 — PORTB bit 5 |
| Chân 21 | RB6 — PORTB bit 6 / ICSP clock |
| Chân 22 | RB7 — PORTB bit 7 / ICSP data |
| Chân 23 | RC0 — PORTC bit 0 |
| Chân 24 | RC1 — PORTC bit 1 |
| Chân 25 | RC2 — PORTC bit 2 |
| Chân 26 | RC3 — PORTC bit 3 |
| Chân 27 | RC4 — PORTC bit 4 |
| Chân 28 | RC5 — PORTC bit 5 |
| Chân 29 | RC6 — PORTC bit 6 |
| Chân 30 | RC7 — PORTC bit 7 |
| Chân 31 | RD0 — PORTD bit 0 |
| Chân 32 | RD1 — PORTD bit 1 |
| Chân 33 | RD2 — PORTD bit 2 |
| Chân 34 | RD3 — PORTD bit 3 |
| Chân 35 | RD4 — PORTD bit 4 |
| Chân 36 | RD5 — PORTD bit 5 |
| Chân 37 | RD6 — PORTD bit 6 |
| Chân 38 | RD7 — PORTD bit 7 |
| Chân 39 | PGC/ICSPCLK — In-Circuit Serial Programming clock |
| Chân 40 | PGD/ICSPDAT — In-Circuit Serial Programming data |
Ứng dụng tiêu biểu
PIC18F47K42-E/P phù hợp cho 7 Áp dụngs: Low-Power Wireless Sensor Node, Industrial Automation PLC, Automotive Body Control Module, Home Appliance User Interface, Smart Meter Data Concentrator, Medical Monitoring Device, HVAC Climate Control.
Low-Power Wireless Sensor Node
The PIC18F47K42-E/P's 128 KB Flash, 8 KB RAM, and 4 DMA channels make it an ideal host MCU for battery-powered wireless sensor nodes. The CIP DMA can move ADC samples to memory autonomously while the CPU sleeps, while the deep-sleep current below 100 nA extends coin-cell life into the multi-year range. Paired with the integrated 12-bit ADC2 with Computation, the node can perform oversampling and threshold detection without waking the CPU. Designers can implement a 6LoWPAN or LoRaWAN stack in 8 KB RAM with room for proprietary application logic. The 40-pin PDIP through-hole package also simplifies prototyping and rework during early field trials.
Được đề xuất
Industrial Automation PLC
For industrial PLC I/O modules and signal-conditioning cards, the PIC18F47K42-E/P delivers 128 KB Flash for ladder-logic runtimes, the 12-bit ADC2 with Computation for sensor linearization, and the PWM peripheral for closed-loop control. The extended -40C to +125C temperature grade suits cabinet deployments, and the 40-pin PDIP makes through-hole assembly straightforward for low-volume industrial boards. The windowed watchdog timer (WWDT) and vectored interrupts provide deterministic fault response required by IEC 61131-3 systems, while the CRC scanner validates firmware integrity at every boot. The 5V-tolerant I/O directly interfaces with 24V industrial sensors via external dividers.
Được đề xuất
Automotive Body Control Module
The PIC18F47K42-E/P suits body and interior automotive subsystems such as lighting controllers, seat modules, and HVAC blend-door actuators. Its extended temperature grade, 5V I/O tolerance for legacy 12V body networks, and CAN-ready peripherals integrate cleanly into existing vehicle architectures. The 128 KB Flash stores complex body-control algorithms, the DMA moves sensor data without CPU overhead, and the CIP peripherals implement debounced switch inputs and PWM lighting fade transitions autonomously. The part also supports firmware updates over CAN via self-programming Flash, enabling field serviceability for body controllers. Engineers should use the -E extended temp variant for under-dash or engine-bay-adjacent placements.
Được đề xuất
Home Appliance User Interface
Washing machines, dishwashers, and microwave ovens benefit from the PIC18F47K42-E/P's combination of mTouch capacitive touch sensing, 12-bit ADC for temperature and humidity, and the 5-bit DAC for audio beeps. The 8 KB RAM supports an embedded GUI library and the 128 KB Flash holds appliance firmware plus multilingual menus. The CIP-driven peripherals implement smooth knob emulation via PWM without CPU intervention. Designers can leverage Microchip's MCC Melody code generator for rapid pin configuration and peripheral setup. Through-hole PDIP packaging suits high-vibration appliance environments and simplifies field service.
Được đề xuất
Smart Meter Data Concentrator
Smart electricity and water meters using the PIC18F47K42-E/P benefit from its 128 KB Flash for meter firmware and secure communications stacks, plus the 12-bit ADC2 with Computation for power-quality measurements. The DMA channels enable continuous waveform sampling while the CPU handles application logic, and the deep-sleep modes keep standby consumption below the regulatory limits for utility-grade meters. The 40-pin PDIP format allows easy integration with through-hole power supply sections common in metering designs. The hardware CRC scanner provides tamper-detection capability required for revenue-grade meters.
Được đề xuất
Medical Monitoring Device
Patient monitors and portable diagnostic devices can leverage the PIC18F47K42-E/P's 12-bit ADC2 for high-accuracy biosignal acquisition, low-power deep-sleep modes for wearable battery life, and DMA for continuous data acquisition without CPU intervention. The 128 KB Flash accommodates ECG/EEG signal processing algorithms and the 8 KB RAM buffers multiple waveform leads simultaneously. The vectored interrupt controller ensures deterministic response to alarm conditions - critical for IEC 62304 medical device compliance. Engineers should add external watchdog supervision and follow FDA design-control guidance; the part itself is not FDA-listed but is suitable for use as an embedded controller within FDA-cleared systems.
Được đề xuất
HVAC Climate Control
The PIC18F47K42-E/P's combination of multi-channel 12-bit ADC for temperature/humidity sensing, multiple PWM channels for damper and fan motor control, and robust 5V-tolerant I/O make it an excellent HVAC controller brain. The CIP DMA offloads sensor scanning and PID loop execution from the CPU, while the 128 KB Flash stores scheduling, fault logging, and adaptive control algorithms. Extended -40C to +125C operation handles rooftop unit environments, and the 40-pin PDIP simplifies HVAC control board manufacturing. The hardware CRC scanner ensures firmware integrity in critical-life-safety installations.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC18F47K42-E/P — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | PIC18F47K42-I/P | PIC18F46K42-E/P | PIC18F46Q84-I/P |
|---|---|---|---|---|
| Package | 40-pin PDIP | 40-pin PDIP - same | 40-pin PDIP - same | 40-pin PDIP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash (KB) | 128 | 128 | 64 (-50%) | 64 (-50%) |
| RAM (KB) | 8 | 8 | 8 | 8 |
| EEPROM (B) | 256 | 256 | 256 | 256 |
| Max CPU Speed (MHz) | 64 | 64 | 64 | 64 |
| Operating Voltage (V) | 2.3 to 5.5 | 2.3 to 5.5 | 2.3 to 5.5 | 2.3 to 5.5 |
| Temperature Range | -40C to +125C (E) | -40C to +85C (I) | -40C to +125C (E) | -40C to +85C (I) |
| DMA Channels | 4 | 4 | 4 | 4 |
| ADC | 12-bit ADC2 with Computation | 12-bit ADC2 | 12-bit ADC2 | 12-bit ADC2 |
| Unit Price (qty 1) | $8.26 | $8.10 approx | $7.50 approx | $7.00 approx |
Bảo phân biệt quan trọng
- Largest Flash in the 40-pin PIC18FxxK42 family (vsPIC18F46K42-E/P)
- Extended -40C to +125C temperature grade for harsh environments (vsPIC18F47K42-I/P)
- CIP peripherals with DMA reduce CPU load (vsPIC18F46K22-E/P)
Ghi chú thiết kế
Estimated: At VDD=5V, FOSC=64MHz, all peripherals active, the PIC18F47K42-E/P draws approximately 15-20 mA. Add a 100 nF decoupling cap as close as possible to VDD (pin 13) and VSS (pin 14). For battery applications, use the deep-sleep mode (<100 nA) and wake via RTCC interrupt. The internal LDO must be enabled via the LDOEN bit in software when VDD falls below 2.7V to maintain reliable 64 MHz operation.
Place the 100 nF VDD decoupling capacitor within 3 mm of pin 13 with a short ground return to pin 14. Add a bulk capacitor (10 uF tantalum or 22 uF ceramic) on the VDD rail if the source impedance is significant. Keep crystal traces short (under 10 mm) and surround them with a ground pour to minimize EMI. ICSP pins PGC (pin 39) and PGD (pin 40) should remain accessible for in-circuit programming during prototyping.
Critical pitfalls when designing with PIC18F47K42-E/P: (1) the PPS peripheral pin select must be unlocked via PPSLOCK before configuration or writes are silently ignored; (2) ADC readings require the ADGO bit to be polled or the ADC interrupt enabled - do not read ADRES directly; (3) MCLR (pin 1) must be tied to VDD via 10 kohm if not used, otherwise the device will hold in reset; (4) the I2C peripheral uses the MSSP module, not the legacy SSP - configure via the new MSSP register set per datasheet section 30.
For designs with external analog signals, route analog inputs (RA0-RA5, RB0-RB3) away from PWM outputs and high-current switching traces. Use a 1 kohm series resistor on the ADC input with a 100 nF capacitor to VSS for anti-aliasing if the source impedance is high. The 12-bit ADC2 needs at least 10 us acquisition time - extend TACQ for high-impedance sources per datasheet guidance in the ADC section.
Thông tin tuân thủ
RoHS and REACH compliant per Microchip product page. Lead-free and halogen-free per package markings. Not AEC-Q100 qualified - the standard PIC18F47K42-E/P is not automotive qualified; AEC-Q100 qualification requires a specific -Q1 ordering code suffix which is not present in this MPN. Per Microchip environmental compliance documentation, the part is conflict-minerals compliant.
