PIC18F27K40-E/SS - 8-bit MCU, 128KB Flash, 64MHz, 28-SSOP | Microchip
MPN: PIC18F27K40-E/SS ✓ Hoạt độngPIC18F27K40-E/SS Tóm tắt
A microcontroller (MCU) is a single-chip computer containing a CPU, non-volatile program storage (Flash/ROM), volatile working memory (RAM), and a mix of peripherals such as ADC, timers, communication, and PWM. Within the system taxonomy it belongs to embedded controllers -> microcontrollers -> 8-bit MCUs -> semiconductor ICs. PIC18 series devices use an enhanced Harvard RISC architecture, separating program and data buses for deterministic instruction throughput.
Key features include 49 instruction set, 16-bit instructions, hardware multiplier, XLP (eXtreme Low Power) technology, and direct LED drive capability on I/O pins. Core Independent Peripherals (CIPs) such as the Complementary Waveform Generator (CWG), Windowed Watchdog Timer (WWDT), and CRC/Scan can operate without CPU intervention, offloading timing-critical tasks and lowering active-core power.
Technical depth: the part integrates 24 channels of 10-bit ADC, a 5-bit DAC, multiple Capture/Compare/PWM (CCP) modules, Enhanced USART, MSSP (SPI/I2C), and hardware touch/hardware treatment peripherals. The 64 MHz internal oscillator and 16-bit instruction width deliver up to 16 MIPS computational throughput. XLP technology yields typical sleep currents below 50 nA, suiting long-life battery applications.
Typical applications include low-power IoT sensor nodes, LED lighting controllers, home appliance user interfaces, industrial sensor signal conditioning, and battery-powered handheld instruments. The combination of 128KB Flash and rich CIP integration reduces external component count and firmware complexity.
Design consideration: when migrating code from a PIC18F25K22 or PIC18F27K42, validate interrupt mapping and peripheral pin-select (PPS) assignments, as the K40 family uses enhanced PPS that may differ from older PIC18 baselines. Operate within 3.0V-5.5V VDD; programming voltage is internally managed.
This page synthesizes distributor pricing, drop-in alternatives, comparison matrix, and practical design notes not found in the manufacturer datasheet alone.
Bộ thay thế dễ dàng lắp đặt cho PIC18F27K40-E/SS — 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 PIC18F27K40-E/SS (cùng hình factor và footprint) — khác nhau ở Package, ADC, Operating Temperature, Program Memory (Flash), Core Architecture.
PIC18F27K40-I/SS
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F27K40-E/SP
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC18F27K42-E/SS
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F25Q43-I/STX
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F24K22-I/SSVAO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATTINY1626-XU
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F27K40-E/SS Tỷ lệ tối đa & tính chất điện
| Core Architecture | PIC18 RISC (8-bit) |
| Program Memory (Flash) | 128 KB (64K x 16) |
| RAM | 4 KB |
| EEPROM | 256 B |
| Maximum CPU Frequency | 64 MHz |
| Operating Voltage (VDD) | 3.0 V to 5.5 V |
| ADC | 10-bit, up to 24 channels |
| DAC | 5-bit |
| Comparators | Yes |
| PWM / CCP Modules | PWM, CCP, CWG |
| Core Independent Peripherals | CWG, WWDT, CRC/Scan, HLT |
| Communication | EUSART, MSSP (SPI / I2C) |
| XLP (Low Power) Technology | Yes |
| Nhiệt độ hoạt động | -40C to +125C (Extended, -E suffix) |
| Hộp | 28-pin SSOP (5.30 mm body) |
| Kiểu lắp đặt | Surface Mount |
| Trạng thái RoHS | Compliant |
| Lead-Free | Yes |
Cấu hình chân PIC18F27K40-E/SS
| Chân 1 | RA0 — Port A bit 0 / AN0 / IOC |
| Chân 2 | RA1 — Port A bit 1 / AN1 / IOC |
| Chân 3 | RA2 — Port A bit 2 / AN2 / DAC / IOC |
| Chân 4 | RA3 — Port A bit 3 / AN3 / IOC |
| Chân 5 | RA4 — Port A bit 4 / IOC |
| Chân 6 | RA5 — Port A bit 5 / AN4 / IOC |
| Chân 7 | RA6 — Port A bit 6 / OSC2 / IOC |
| Chân 8 | VSS — Ground reference |
| Chân 9 | RA7 — Port A bit 7 / OSC1 / IOC |
| Chân 10 | RB0 — Port B bit 0 / ZCD / IOC |
| Chân 11 | RB1 — Port B bit 1 / ZCD / IOC |
| Chân 12 | RB2 — Port B bit 2 / AN8 / IOC |
| Chân 13 | RB3 — Port B bit 3 / AN9 / IOC |
| Chân 14 | RB4 — Port B bit 4 / AN10 / IOC |
| Chân 15 | RB5 — Port B bit 5 / AN11 / IOC |
| Chân 16 | RB6 — Port B bit 6 / ICDCLK / IOC |
| Chân 17 | RB7 — Port B bit 7 / ICDDAT / IOC |
| Chân 18 | VDD — Positive supply (3.3V or 5V) |
| Chân 19 | VSS — Ground reference |
| Chân 20 | RC0 — Port C bit 0 / AN12 / IOC |
| Chân 21 | RC1 — Port C bit 1 / AN13 / IOC |
| Chân 22 | RC2 — Port C bit 2 / AN14 / IOC |
| Chân 23 | RC3 — Port C bit 3 / AN15 / IOC |
| Chân 24 | RC4 — Port C bit 4 / AN16 / IOC |
| Chân 25 | RC5 — Port C bit 5 / AN17 / IOC |
| Chân 26 | RC6 — Port C bit 6 / AN18 / IOC |
| Chân 27 | RC7 — Port C bit 7 / AN19 / IOC |
| Chân 28 | RE3 — Port E bit 3 / AN5 / IOC |
Ứng dụng tiêu biểu
PIC18F27K40-E/SS phù hợp cho 6 Áp dụngs: Low-Power IoT Sensor Node, LED Lighting Controller, Home Appliance User Interface, Industrial Sensor Signal Conditioning, Battery-Powered Handheld Instrument, Automotive Body Control Module.
Low-Power IoT Sensor Node
The PIC18F27K40-E/SS suits battery-powered IoT sensor nodes thanks to XLP technology with sub-50 nA sleep current and 128 KB Flash for protocol stacks. The 10-bit ADC with up to 24 channels can directly interface analog sensors (temperature, humidity, pressure), while the integrated I2C/SPI MSSP connects digital sensors. Sleep-mode duty cycling with WWDT wake-up enables multi-year battery life. The 64 MHz core handles encrypted MQTT/HTTP transmission bursts.
Được đề xuất
LED Lighting Controller
The PIC18F27K40-E/SS can drive LED arrays directly using its high-current I/O pins (up to 50 mA per pin) and integrated Complementary Waveform Generator (CWG). The 5-bit DAC and PWM/CCP modules generate precise color-mixing waveforms for RGB or tunable-white lighting. CRC/Scan can monitor LED open/short faults without CPU intervention, reducing firmware complexity. Wide 3.0V to 5.5V VDD simplifies direct 5V LED rail operation.
Được đề xuất
Home Appliance User Interface
The PIC18F27K40-E/SS powers appliance control boards by integrating touch/proximity sensing via Hardware Limit Timer (HLT), PWM for motor control, and EUSART for appliance-network communication. The 128 KB Flash supports multi-language UI and safety state machines. The Extended temperature grade (-40C to +125C) handles oven or dryer thermal environments. Core Independent Peripherals offload button debouncing and LED matrix scanning.
Được đề xuất
Industrial Sensor Signal Conditioning
The PIC18F27K40-E/SS conditions 4-20 mA or 0-10 V industrial sensor signals via its 10-bit ADC with up to 24 channels and integrated comparators for threshold detection. The 5-bit DAC can output a calibration reference voltage. The EUSART interfaces RS-485 transceivers for industrial bus communication, while XLP modes allow 10+ year battery life on remote wireless transmitters. Extended temp grade supports factory-floor environments.
Được đề xuất
Battery-Powered Handheld Instrument
The PIC18F27K40-E/SS fits portable DMMs, environmental meters, and medical handheld devices thanks to XLP low-power modes and 128 KB Flash for display drivers, calibration tables, and data logging. The 5-bit DAC and comparators can drive a piezo buzzer or audio feedback. The MSSP interfaces OLED displays over SPI. Wide VDD range supports 2xAA/4xAA NiMH packs with direct 3.3V or 5V operation.
Được đề xuất
Automotive Body Control Module
The PIC18F27K40-E/SS Extended temperature grade (-40C to +125C) makes it usable in cabin body controllers for window lift, mirror adjust, and interior lighting. The CWG drives H-bridge MOSFETs for small motor loads, while PWM modules control LED dimming. CAN/LIN connectivity is achievable via the EUSART and an external transceiver. The 128 KB Flash holds CAN/LIN stacks and diagnostic firmware. Note: K40 is not AEC-Q100 qualified; for full automotive safety use PIC18F27K40-E/SSVAO variants.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC18F27K40-E/SS — 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 | PIC18F27K40-I/SS | PIC18F27K42-E/SS | PIC18F25Q43-I/STX |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SSOP | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same |
| Flash | 128 KB | 128 KB | 128 KB | 32 KB |
| RAM | 4 KB | 4 KB | 4 KB | 2 KB |
| Max Frequency | 64 MHz | 64 MHz | 64 MHz | 64 MHz |
| Operating Voltage | 3.0V - 5.5V | 3.0V - 5.5V | 3.0V - 5.5V | 3.0V - 5.5V |
| Temperature Grade | Extended (-40C to +125C) | Industrial (-40C to +85C) | Extended (-40C to +125C) | Industrial (-40C to +85C) |
| Core Independent Peripherals | CWG, WWDT, CRC/Scan, HLT | CWG, WWDT, CRC/Scan, HLT | Enhanced CIP set (more CWG, ZCD) | Q43 family CIP enhancements |
Bảo phân biệt quan trọng
- Largest flash in 28-pin PIC18 K40 family (vsPIC18F25Q43-I/STX)
- Extended temperature range vs Pico cell (vsPIC18F27K40-I/SS)
- Integrated Core Independent Peripherals (vsPIC18F24K25K22-I/SSVAO)
Ghi chú thiết kế
Estimated: at 64 MHz with all peripherals active, the PIC18F27K40-E/SS consumes approximately 10-15 mA from a 5.0V supply. Use XLP sleep modes with WWDT wake-up for battery applications; sleep current drops below 50 nA per Microchip datasheet 40001844E. Decouple VDD (pin 20) with 100 nF ceramic + 10 uF bulk capacitor placed within 5 mm of the pin to suppress switching transients during CWG operations.
Route the ICSP pins RB6 (ICDCK) and RB7 (ICDDAT) directly to a 6-pin header without series resistors for in-circuit debugging. Keep the high-current I/O traces (RA0-RA4 capable of 50 mA) wide (>20 mil) to handle LED drive currents. Place a ground pour under the SSOP package and connect thermal pad equivalents to VSS to improve thermal dissipation at +125C ambient.
When migrating code from PIC18F45K22 or PIC18F46K22 to PIC18F27K40, validate the Peripheral Pin Select (PPS) configuration registers - the K40 family has a different PPS unlock sequence. Do not exceed 5.5V on any pin; the K40 is NOT 5V tolerant on analog pins when VDD is below 3.0V. Always set the WDT to a reasonable timeout (typically 1-4 seconds) before field deployment to recover from firmware lockups.
The PIC18F27K40-E/SS internal oscillator is factory-calibrated to within +/- 1% across temperature. For UART communication above 115200 baud or for USB applications requiring accurate timing, configure the 64 MHz HFINTOSC with the PLL and use the PLL-typed clock output. Series termination resistors on EUSART TX lines reduce ringing on long PCB traces to external RS-485 transceivers.
Thông tin tuân thủ
RoHS compliant per Microchip product page. PIC18F27K40-E/SS is NOT AEC-Q100 qualified; for AEC-Q100 automotive use qualified variants per Microchip automotive grade catalog. Pricing refresh as of 2026-10-05.
