PIC18F27K40-E/SS - 8-bit MCU, 128KB Flash, 64MHz, 28-SSOP | Microchip
MPN: PIC18F27K40-E/SS ✓ نشطPIC18F27K40-E/SS نظرة عامة
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.
بدائل مباشرة لـ PIC18F27K40-E/SS — نفس الحزمة، متوافق دبوس بدبوس. تُستثنى القطع ذات الحزم المختلفة التي تتطلب تعديل PCB.
الطرازات في هذه السلسلة
طرازات من نفس السلسلة متوافقة تمامًا مع PIC18F27K40-E/SS (نفس عامل الشكل والبصمة) — يختلف في Package, ADC, Operating Temperature, Program Memory (Flash), Core Architecture.
PIC18F27K40-I/SS
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC18F27K40-E/SP
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
PIC18F27K42-E/SS
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC18F25Q43-I/STX
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC18F24K22-I/SSVAO
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←ATTINY1626-XU
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC18F27K40-E/SS الحدود القصوى والخصائص الكهربائية
| 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 |
| درجة حرارة التشغيل | -40C to +125C (Extended, -E suffix) |
| العلبة | 28-pin SSOP (5.30 mm body) |
| نوع التركيب | Surface Mount |
| حالة RoHS | Compliant |
| Lead-Free | Yes |
تكوين أطراف PIC18F27K40-E/SS
| دبوس 1 | RA0 — Port A bit 0 / AN0 / IOC |
| دبوس 2 | RA1 — Port A bit 1 / AN1 / IOC |
| دبوس 3 | RA2 — Port A bit 2 / AN2 / DAC / IOC |
| دبوس 4 | RA3 — Port A bit 3 / AN3 / IOC |
| دبوس 5 | RA4 — Port A bit 4 / IOC |
| دبوس 6 | RA5 — Port A bit 5 / AN4 / IOC |
| دبوس 7 | RA6 — Port A bit 6 / OSC2 / IOC |
| دبوس 8 | VSS — Ground reference |
| دبوس 9 | RA7 — Port A bit 7 / OSC1 / IOC |
| دبوس 10 | RB0 — Port B bit 0 / ZCD / IOC |
| دبوس 11 | RB1 — Port B bit 1 / ZCD / IOC |
| دبوس 12 | RB2 — Port B bit 2 / AN8 / IOC |
| دبوس 13 | RB3 — Port B bit 3 / AN9 / IOC |
| دبوس 14 | RB4 — Port B bit 4 / AN10 / IOC |
| دبوس 15 | RB5 — Port B bit 5 / AN11 / IOC |
| دبوس 16 | RB6 — Port B bit 6 / ICDCLK / IOC |
| دبوس 17 | RB7 — Port B bit 7 / ICDDAT / IOC |
| دبوس 18 | VDD — Positive supply (3.3V or 5V) |
| دبوس 19 | VSS — Ground reference |
| دبوس 20 | RC0 — Port C bit 0 / AN12 / IOC |
| دبوس 21 | RC1 — Port C bit 1 / AN13 / IOC |
| دبوس 22 | RC2 — Port C bit 2 / AN14 / IOC |
| دبوس 23 | RC3 — Port C bit 3 / AN15 / IOC |
| دبوس 24 | RC4 — Port C bit 4 / AN16 / IOC |
| دبوس 25 | RC5 — Port C bit 5 / AN17 / IOC |
| دبوس 26 | RC6 — Port C bit 6 / AN18 / IOC |
| دبوس 27 | RC7 — Port C bit 7 / AN19 / IOC |
| دبوس 28 | RE3 — Port E bit 3 / AN5 / IOC |
التطبيقات النموذجية
PIC18F27K40-E/SS مناسب لـ 6 التطبيقs: 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.
موصى به
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.
موصى به
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.
موصى به
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.
موصى به
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.
موصى به
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.
موصى به
ملخص المنتجات الموصى بها
بيانات مرجعية هندسية لـ PIC18F27K40-E/SS — المقارنة وإرشادات التصميم ومعلومات الامتثال.
دليل الاختيار
المقارنة مع البدائل
| المعامل | هذا المنتج | 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 |
أبرز الفروقات
- Largest flash in 28-pin PIC18 K40 family (مقابلPIC18F25Q43-I/STX)
- Extended temperature range vs Pico cell (مقابلPIC18F27K40-I/SS)
- Integrated Core Independent Peripherals (مقابلPIC18F24K25K22-I/SSVAO)
ملاحظات التصميم
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.
معلومات الامتثال
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.
