PIC18F14K22-E/SO - 8-bit MCU, 16KB Flash, 20-Pin SOIC | Microchip
MPN: PIC18F14K22-E/SO ✓ نشطPIC18F14K22-E/SO نظرة عامة
A microcontroller (MCU) is a single-chip computer containing a CPU core, program and data memory, programmable I/O peripherals, and on-chip support functions like timers, ADC, and communication interfaces. PIC18F devices use a C-compiler-optimized 8-bit RISC architecture and occupy the middle ground of Microchip's PIC lineup - more capable than baseline PIC10/12/16 parts while cheaper and smaller than PIC24/dsPIC33 devices. The PIC18F1XK22 family specifically targets low-pin-count (20 pins) cost-sensitive embedded designs needing nanoWatt XLP energy efficiency.
Key features include 16 I/O pins, a 10-bit ADC with up to 12 channels, two comparators, two 8-bit timers plus two 16-bit timers, an enhanced USART, two MSSP (SPI/I2C) modules, and a charge time measurement unit (CTMU) for capacitive touch sensing. The XLP technology delivers typical sleep currents below 50 nA, while the instruction set supports hardware multiply and C-compiler-friendly addressing. These features allow direct use in mains-powered and battery-powered sensor nodes without external glue logic.
Typical applications include home-automation controllers, HVAC sensor interfaces, low-cost industrial sensing nodes, capacitive-touch user interfaces, and USB-free serial-comm bridge designs using the on-chip EUSART. The wide 4.2 V to 5.5 V supply range also supports direct connection to regulated 5 V rails without level shifters, simplifying BOM and PCB layout.
When designing with this device, place a 0.1 uF decoupling capacitor within 5 mm of VDD and consider ICSP header access for production programming. The MCLR pin must be pulled up through a resistor (typically 10 kOhm) for reliable reset behavior. For battery designs, leverage the XLP sleep modes and the on-chip LDO to maximize idle life.
بدائل مباشرة لـ PIC18F14K22-E/SO — 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 PIC18F14K22-E/SO (نفس عامل الشكل والبصمة) — يختلف في Package, Timers, Core Architecture, ADC, Operating Temperature.
PIC18F14K22-I/SO
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC18F14K22-I/SS
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC18F13K22-I/SO
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC18F14K22-E/ML
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC18F14K22-I/ML
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC18F14K50-I/SO
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC18F14K22-E/SO الحدود القصوى والخصائص الكهربائية
| Device Family | PIC18F1XK22 (nanoWatt XLP) |
| Program Memory Type | Flash |
| Program Memory Size | 16 KB |
| Data SRAM | 512 bytes |
| Data EEPROM | 256 bytes |
| CPU Architecture | 8-bit PIC18 RISC, C-optimized |
| Maximum Clock Speed | 40 MHz (64 MHz internal oscillator block) |
| Supply Voltage (VDD) | 4.2 V to 5.5 V |
| I/O Pins | 16 |
| درجة حرارة التشغيل | -40C to +125C (Extended, /E suffix) |
| العلبة | SOIC-20 (SO) |
| نوع التركيب | Surface Mount |
| ADC | 10-bit, up to 12 channels |
| Communication Interfaces | EUSART, 2x MSSP (SPI/I2C) |
| Timers | 2x 8-bit, 2x 16-bit |
| Comparators | 2 |
| Special Features | nanoWatt XLP, CTMU (capacitive touch), ICSP, ICD |
| حالة RoHS | Compliant |
تكوين أطراف PIC18F14K22-E/SO
| دبوس 1 | RA3/AN3/VREF+ — Digital I/O / analog input / voltage reference plus |
| دبوس 2 | RA4/AN4 — Digital I/O / analog input 4 |
| دبوس 3 | RA5/MCLR/VPP — Digital I/O / master clear reset (active low) / programming voltage |
| دبوس 4 | RA6/OSC2/CLKO — Digital I/O / oscillator output / clock output |
| دبوس 5 | RA7/OSC1/CLKI — Digital I/O / oscillator input / clock input |
| دبوس 6 | VSS — Ground reference |
| دبوس 7 | RA0/AN0/C1IN+/ICSPDAT — Digital I/O / analog input 0 / comparator input / ICSP data |
| دبوس 8 | RA1/AN1/C1IN-/ICSPCLK — Digital I/O / analog input 1 / comparator input / ICSP clock |
| دبوس 9 | RA2/AN2/CVREF/VREF- — Digital I/O / analog input 2 / comparator VREF / VREF minus |
| دبوس 10 | RC0/P1B/T1CKI — Digital I/O / PWM output / Timer1 clock input |
| دبوس 11 | RC1/P1C/CCP2 — Digital I/O / PWM output / CCP2 module |
| دبوس 12 | RC2/P1D/CCP1 — Digital I/O / PWM output / CCP1 module |
| دبوس 13 | RC3/AN7/SS — Digital I/O / analog input 7 / SPI slave select |
| دبوس 14 | RC4/AN8/SDA — Digital I/O / analog input 8 / I2C data |
| دبوس 15 | RC5/AN9/SDO — Digital I/O / analog input 9 / SPI data out |
| دبوس 16 | RC6/AN10/TX/CK — Digital I/O / analog input 10 / EUSART TX / clock |
| دبوس 17 | RC7/AN11/RX/DT — Digital I/O / analog input 11 / EUSART RX / data |
| دبوس 18 | VDD — Positive supply voltage (4.2 V to 5.5 V) |
| دبوس 19 | VSS — Ground reference |
| دبوس 20 | RB7/AN12/PGD — Digital I/O / analog input 12 / ICSP program data |
التطبيقات النموذجية
PIC18F14K22-E/SO مناسب لـ 6 التطبيقs: Industrial Sensor Node, Home Automation Controller, Capacitive Touch User Interface, HVAC Climate Sensor, Low-Cost Serial Comm Bridge, Portable Medical Monitoring Accessory.
Industrial Sensor Node
The PIC18F14K22-E/SO suits battery or line-powered industrial sensor nodes thanks to its 16 KB Flash program memory, 10-bit ADC with up to 12 channels, and nanoWatt XLP sleep currents below 50 nA. Placed on a 5 V regulated rail, it reads thermocouple, 4-20 mA, or 0-10 V transducer signals while keeping standby draw minimal between measurements. The -40C to +125C extended temperature grade lets it sit inside unventilated factory cabinets without derating, and the on-chip EUSART streams readings to a host PLC or gateway over RS-485 with an external transceiver.
موصى به
Home Automation Controller
The PIC18F14K22-E/SO drives sub-GHz or Wi-Fi home-automation endpoints because it has 16 KB Flash for protocol stacks, two MSSP modules for SPI-based radio modules plus an I2C sensor bus, and an EUSART for legacy 315/433 MHz links. Its nanoWatt XLP idle allows coin-cell or 2x AA battery operation for years, while the 20-pin SOIC keeps the PCB compact inside wall switches and sensor pods. The on-chip CTMU simplifies capacitive touch wake keys for button-less user interfaces.
موصى به
Capacitive Touch User Interface
The PIC18F14K22-E/SO powers capacitive touch keypads and sliders via its on-chip CTMU peripheral, which measures capacitance changes with sub-pF resolution without external charge pumps. With 16 I/O pins, the MCU can scan up to 12 touch electrodes while still driving indicator LEDs and an I2C OLED display. The /E temperature grade supports automotive cabin and outdoor appliance use, and the nanoWatt XLP sleep preserves battery life on wake-on-touch designs.
موصى به
HVAC Climate Sensor
The PIC18F14K22-E/SO reads temperature, humidity, and pressure sensors in residential and commercial HVAC equipment using its 10-bit ADC plus I2C MSSP. The 16 KB Flash holds calibration tables and Modbus RTU framing, while the EUSART talks directly to the building automation bus at 9600-115200 baud. The extended -40C to +125C temperature grade suits rooftop and boiler-room installations where ambient swings exceed 70C, and the 5 V supply range matches typical 24VAC rectified rails after regulation.
موصى به
Low-Cost Serial Comm Bridge
The PIC18F14K22-E/SO acts as a UART-to-UART, UART-to-SPI, or UART-to-I2C bridge because it offers two MSSP (SPI/I2C) ports alongside one EUSART in a 20-pin SOIC. The 16 KB Flash comfortably fits protocol-conversion state machines, while the CTMU is unused. The /E grade supports outdoor enclosures, and the nanoWatt XLP idle allows the bridge to enter sleep when no traffic is detected on either side.
موصى به
Portable Medical Monitoring Accessory
The PIC18F14K22-E/SO fits portable medical-device accessories such as pill-bottle reminders, Bluetooth LE sensor beacons, and patient-button peripherals thanks to nanoWatt XLP deep-sleep below 50 nA and 16 KB Flash for Bluetooth HCI pass-through. Its EUSART streams sensor data to a paired radio module, and the 10-bit ADC reads battery voltage for end-of-life prediction. The /E temperature grade handles the elevated heat inside enclosed pill dispensers, while the SOIC-20 simplifies hand-soldering for prototype builds.
موصى به
ملخص المنتجات الموصى بها
بيانات مرجعية هندسية لـ PIC18F14K22-E/SO — المقارنة وإرشادات التصميم ومعلومات الامتثال.
دليل الاختيار
المقارنة مع البدائل
| المعامل | هذا المنتج | PIC18F14K22-I/SO | PIC18F14K22-I/SS | PIC18F13K22-I/SO | PIC18F14K22-E/ML | PIC18F14K50-I/SO |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | SOIC-20 (SO) | SOIC-20 (SO) - same | SSOP-20 (SS) - different body, different PCB land | SOIC-20 (SO) - same | QFN-20 (ML) - different PCB land | SOIC-20 (SO) - same |
| Program Flash | 16 KB | 16 KB | 16 KB | 8 KB (-50%) | 16 KB | 16 KB |
| Data SRAM | 512 B | 512 B | 512 B | 512 B | 512 B | 512 B |
| Data EEPROM | 256 B | 256 B | 256 B | 256 B | 256 B | 256 B |
| Operating Temperature | -40C to +125C (Extended) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +125C (Extended) | -40C to +85C (Industrial) |
| USB Peripheral | No | No | No | No | No | Yes (USB 2.0 FS device) |
| Maximum Clock Speed | 40 MHz | 40 MHz | 40 MHz | 40 MHz | 40 MHz | 40 MHz |
| Approx. Unit Price (qty 1) | USD 2.74 | USD 2.45 | USD 2.45 | USD 2.10 | USD 2.85 | USD 2.95 |
أبرز الفروقات
- Extended temperature grade /E (مقابلPIC18F14K22-I/SO)
- nanoWatt XLP deep-sleep below 50 nA (مقابلPIC18F13K22-I/SO)
- On-chip CTMU capacitive-touch peripheral (مقابلPIC18F14K50-I/SO)
ملاحظات التصميم
Estimated: at 40 MHz execution from a 5.0 V VDD, the PIC18F14K22 core draws approximately 8 mA active, while nanoWatt XLP sleep draws below 50 nA typical. Decouple VDD with a 0.1 uF ceramic capacitor placed within 5 mm of the VDD pin, and add a 10 uF bulk capacitor on the same rail for switch-transient suppression. For battery designs, gate the sensor supply with a load switch driven by an MCU I/O to extend shelf life.
The MCLR pin (pin 3, RA5) must never float. Tie MCLR to VDD through a 10 kOhm pull-up resistor; omitting the pull-up causes random resets and unreliable ICSP programming. Always include a 6-pin or 8-pin ICSP header with PGD/PGC/MCLR/VDD/VSS access for in-circuit programming and in-circuit debugging with tools like MPLAB ICD 3 or PICkit 4.
Place the 0.1 uF decoupling capacitor as close as possible to the VDD pin, ideally within 5 mm trace length, and provide a low-impedance ground return directly to the VSS pin. Keep the SOIC-20 thermal land footprint matched to the recommended PCB land pattern in the Microchip packaging specification. For mixed-signal designs, dedicate separate analog and digital supply traces, even if both share one regulator, to keep ADC readings clean.
Reserve one PCB footprint area that can accept either SOIC-20 (SO) or SSOP-20 (SS) variants, since the pinout is identical. This lets a single board design ship with PIC18F14K22-I/SO or PIC18F14K22-I/SS based on cost, and the same firmware images run unchanged. If migrating to the smaller QFN-20 (ML) package, redo the PCB land pattern because the QFN center pad and lead pitch differ from the SOIC gull-wing leads.
معلومات الامتثال
RoHS and REACH compliant per product specifications. Not AEC-Q100 qualified - choose a PIC18F-K50 automotive variant if AEC-Q100 is required.
