PIC18LF14K22T-I/SS - 8-bit 16KB Flash XLP MCU 20-SSOP | Microchip
MPN： PIC18LF14K22T-I/SS ✓ 啟用中PIC18LF14K22T-I/SS 概覽
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory (Flash/ROM), data memory (RAM), and peripherals on one silicon die. The PIC18 family sits in the 8-bit hierarchy above baseline PIC10/12/16 parts, offering enhanced peripherals, C-compiler-friendly architecture and Harvard-bus design; this places it within the broader taxonomy of microcontroller -> embedded processor -> semiconductor. nanoWatt XLP technology is Microchip's low-power brand, providing deep-sleep currents in the nA range for battery-friendly designs.
Differentiating features include 17 channels of 10-bit ADC, an enhanced USART, two SPI/I2C modules, an on-chip 16-level voltage reference, a comparator module, and a mTouch capacitive-touch peripheral. The internal 16 MHz and 64 MHz oscillators eliminate external crystals in many designs, and the device supports in-circuit serial programming (ICSP) via two pins. Watchdog timer, brown-out reset, and low-voltage detection are integrated.
Architecturally, the PIC18LF14K22 uses a Harvard design with separate program and data buses, a 16-bit instruction word, and a hardware multiply routine. The 'LF' (low-voltage Flash) prefix indicates a true 1.8V minimum Vdd, and the 'I' suffix denotes the industrial -40C to +85C operating range. Tape-and-reel ('T') and SSOP package options support automated high-volume assembly.
Typical applications include battery-powered sensor nodes, wearable health monitors, remote controls, capacitive-touch user interfaces, IoT edge devices, and low-power industrial instrumentation. The deep-sleep nanoWatt XLP mode and 1.8V minimum Vdd allow operation directly from a single lithium coin cell, with quiescent currents in the nA range during sleep.
A key design consideration: ensure your firmware uses the LF-specific configuration bits (the LF silicon revises some internal regulator settings versus the 'F' part) and validate ADC performance at the lower Vdd bound of 1.8V, where reference stability may differ from 3.3V operation.
This page consolidates real-time distributor pricing, drop-in package-equivalent alternatives, and application-specific design notes that go beyond the manufacturer datasheet narrative, providing actionable selection guidance for engineers and procurement teams.
直接替換替代品，適用於 PIC18LF14K22T-I/SS — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： PIC18LF14K22T-I/SS （相同外形與佔位） — 差異在於 Package, Timers, Program Memory (Flash), ADC, I/O Pins.
PIC18LF14K22T-I/SS
✅ 直接替換聯絡詢價
查看資料表 →PIC18LF14K22T-I/SO
✅ 直接替換聯絡詢價
查看資料表 →PIC18LF14K22T-I/ML
✅ 直接替換聯絡詢價
查看資料表 →PIC18LF14K22-I/SS
✅ 直接替換📋 參考替代品（不在目錄中）
PIC18F14K22T-I/SS
✅ 直接替換聯絡詢價
查看資料表 →PIC18LF13K50T-I/SS
✅ 直接替換聯絡詢價
查看資料表 →PIC18LF14K22T-I/SS 最大額定值與電氣特性
| Core | PIC18 8-bit RISC |
| Program Memory (Flash) | 16 KB (8K x 16) |
| Data EEPROM | 256 bytes |
| Data SRAM | 512 bytes |
| Maximum CPU Speed | 64 MHz (16 MIPS) |
| Operating Voltage (Vdd) | 1.8 V to 3.6 V (LF variant) |
| 工作溫度範圍 | -40C to +85C (Industrial, 'I' suffix) |
| ADC | 10-bit, 17 channels |
| Comparators | 2 (with selectable reference) |
| Communication Interfaces | EUSART, 2x SPI, 2x I2C |
| Timers | 4 (16-bit, 8-bit, Watchdog) |
| I/O Pins | 17 |
| 封裝 | 20-pin SSOP (5.30 mm body, 'SS' suffix) |
| Low-Power Technology | nanoWatt XLP |
| 安裝類型 | Surface Mount (Tape & Reel, 'T' suffix) |
| RoHS 狀態 | Compliant |
| Programming/Debug | ICSP via 2 pins, MPLAB X IDE, PICkit 5 |
PIC18LF14K22T-I/SS 腳位配置
| 腳位 1 | RA3 — Digital I/O / analog input AN3 |
| 腳位 2 | RA2 — Digital I/O / analog input AN2 |
| 腳位 3 | RA1 — Digital I/O / analog input AN1 |
| 腳位 4 | RA0 — Digital I/O / analog input AN0 / ULPWU |
| 腳位 5 | RA5 — Digital I/O / analog input AN4 |
| 腳位 6 | RA4 — Digital I/O / analog input AN11 |
| 腳位 7 | Vss — Ground reference |
| 腳位 8 | Vdd — Positive power supply (1.8V-3.6V) |
| 腳位 9 | RA7 — Digital I/O / oscillator input |
| 腳位 10 | RA6 — Digital I/O / oscillator output |
| 腳位 11 | RC0 — Digital I/O / analog input AN16 |
| 腳位 12 | RC1 — Digital I/O / analog input AN17 |
| 腳位 13 | RC2 — Digital I/O / analog input AN14 |
| 腳位 14 | RC3 — Digital I/O / analog input AN15 / SCL |
| 腳位 15 | RC4 — Digital I/O / SDA |
| 腳位 16 | RC5 — Digital I/O / SDO |
| 腳位 17 | RC6 — Digital I/O / TX/CK |
| 腳位 18 | RC7 — Digital I/O / RX/DT |
| 腳位 19 | RB7 — Digital I/O / ICSPDAT |
| 腳位 20 | RB6 — Digital I/O / ICSPCLK |
典型應用
PIC18LF14K22T-I/SS 適用於 6 應用s: Battery-Powered IoT Sensor Node, Wearable Health Monitor, Capacitive-Touch User Interface, Industrial Sensor Transmitter (4-20 mA / 0-10V), Remote Control (RF/IR Transmitter), Smart Energy Meter / Sub-Meter.
Battery-Powered IoT Sensor Node
The PIC18LF14K22T-I/SS is well-matched to battery-powered IoT sensor nodes thanks to its nanoWatt XLP technology, which delivers deep-sleep currents in the nA range with SRAM retention and watchdog timer operation. The 1.8V-3.6V Vdd range enables direct operation from a single 3V CR2032 coin cell without a boost converter, eliminating quiescent-current loss. Its 17-channel 10-bit ADC supports temperature, light, voltage, and analog sensor interfaces; the integrated EUSART plus dual I2C/SPI buses interface to radios like the RN2483 LoRa module or NRF24L01+ 2.4 GHz transceiver. The 64 MHz internal oscillator eliminates an external crystal, reducing BOM cost and PCB area in compact sensor packages.
推薦
Wearable Health Monitor
The PIC18LF14K22T-I/SS fits wearable health monitor designs where coin-cell operation and small PCB area are critical. Operating from 1.8V-3.6V, the LF silicon runs directly from a single alkaline or rechargeable coin cell, while nanoWatt XLP sleep modes extend battery life beyond one year in heart-rate or step-counter applications. The mTouch capacitive-touch peripheral enables touch-based user interfaces without mechanical buttons, and the 17-channel ADC supports multiple bioelectric sensors. The 20-pin SSOP package provides sufficient I/O (17 GPIO) for display, accelerometer interrupt, and battery-voltage monitoring while keeping the PCB footprint under 8 mm by 8 mm for wristband form factors.
推薦
Capacitive-Touch User Interface
The PIC18LF14K22T-I/SS integrates Microchip's mTouch capacitive-touch peripheral, enabling reliable touch buttons, sliders, and proximity sensors without external touch ICs. Its 17 GPIO pins can be configured as capacitive sensing channels with on-chip hardware support for guard rings and noise filtering. The 64 MHz instruction cycle provides responsive touch scanning, and the nanoWatt XLP mode keeps quiescent current under 1 uA during touch standby, which is critical for battery-powered remote controls and smart-home panels. Designers can implement up to 12 touch buttons plus a slider using the on-chip CVD (charge-virtual-capacitance) peripheral.
推薦
Industrial Sensor Transmitter (4-20 mA / 0-10V)
The PIC18LF14K22T-I/SS supports 4-20 mA and 0-10V industrial sensor transmitters with its 10-bit ADC (17 channels), accurate on-chip voltage reference, and industrial -40C to +85C operating range. The 64 MHz core enables 16 MIPS processing power for linearization, calibration, and HART-like protocol modulation. The 1.8V-3.6V Vdd range supports 3.3V-regulated loop-powered designs, while the SSOP-20 industrial-grade package meets harsh-environment solder-joint reliability requirements. Low-power sleep modes preserve loop current during idle periods, supporting IEC 61000-4 industrial EMI environments.
推薦
Remote Control (RF/IR Transmitter)
The PIC18LF14K22T-I/SS is well-suited to battery-powered remote controls, with nanoWatt XLP sleep currents around 20 nA allowing 5+ year battery life from a single CR2032. The internal 16 MHz / 64 MHz oscillators and PWM peripherals drive IR LEDs or low-cost 315/433/868 MHz SAW-based RF transmitters without external timing components. The 17 GPIO pins support matrix keypads up to 4x4, capacitive touch buttons, or rotary encoder inputs. The wide 1.8V-3.6V range matches alkaline and coin-cell chemistries directly, eliminating boost converters in cost-sensitive consumer remote designs.
推薦
Smart Energy Meter / Sub-Meter
The PIC18LF14K22T-I/SS enables cost-effective single-phase smart-energy sub-meters with its 17-channel 10-bit ADC, dual comparators for zero-crossing detection, and EUSART for RS-485 Modbus communication. Running at 64 MHz (16 MIPS), it can sample current via shunt resistors or CTs and calculate RMS power, while the 1.8V-3.6V Vdd range suits 3.3V linear-regulated designs powered from mains AC via capacitive droppers. The 16 KB Flash accommodates metering libraries with calibration constants stored in 256 B EEPROM, and the SSOP-20 industrial-grade package operates over the -40C to +85C industrial range required by IEC 62053 metering standards.
推薦
推薦產品摘要
工程參考資料，適用於 PIC18LF14K22T-I/SS — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | PIC18LF14K22T-I/SO | PIC18LF14K22T-I/ML | PIC18LF14K22-I/SS | PIC18F14K22T-I/SS | PIC18LF13K50T-I/SS |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 20-SSOP (5.30 mm) | 20-SOIC (7.50 mm wide body) | 20-QFN (6x6 mm) | 20-SSOP (5.30 mm) - same | 20-SSOP (5.30 mm) - same | 20-SSOP (5.30 mm) - same |
| Operating Voltage (Vdd) | 1.8 V to 3.6 V (LF) | 1.8 V to 3.6 V (LF) | 1.8 V to 3.6 V (LF) | 1.8 V to 3.6 V (LF) | 2.3 V to 5.5 V (F) | 1.8 V to 3.6 V (LF) |
| Program Memory (Flash) | 16 KB | 16 KB | 16 KB | 16 KB | 16 KB | 8 KB |
| Data SRAM | 512 B | 512 B | 512 B | 512 B | 512 B | 768 B |
| Data EEPROM | 256 B | 256 B | 256 B | 256 B | 256 B | 256 B |
| Maximum CPU Speed | 64 MHz (16 MIPS) | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 48 MHz |
| ADC | 10-bit, 17 ch | 10-bit, 17 ch | 10-bit, 17 ch | 10-bit, 17 ch | 10-bit, 17 ch | 10-bit, 9 ch |
| Low-Power Technology | nanoWatt XLP | nanoWatt XLP | nanoWatt XLP | nanoWatt XLP | nanoWatt XLP | nanoWatt XLP |
| USB Support | No | No | No | No | No | Yes (USB 2.0 FS) |
主要差異化特點
- True 1.8V minimum Vdd for single-cell battery operation (對比PIC18F14K22T-I/SS)
- 16 KB Flash vs 8 KB on the LF13K50 sibling (對比PIC18LF13K50T-I/SS)
- 17-channel ADC vs 9-channel on the LF13K50 (對比PIC18LF13K50T-I/SS)
- Higher 64 MHz CPU vs 48 MHz on the LF13K50 (對比PIC18LF13K50T-I/SS)
設計說明
Estimated: at Vdd = 3.3V with 64 MHz CPU active, the PIC18LF14K22T-I/SS typically draws ~8 mA active, dropping to ~20 nA in deep sleep with SRAM retention. Input supply design must provide at least 100 mV of bulk-decoupling margin and a 0.1 uF ceramic bypass capacitor within 5 mm of the Vdd pin. For coin-cell designs (CR2032, ~220 mAh), the average current budget should stay under 50 uA to achieve a 1-year battery life; this typically requires a duty cycle of less than 0.5% with the CPU active and the radio off for the remaining time.
Route the ICSP clock (RB6/ICSPCLK) and ICSP data (RB7/ICSPDAT) lines with a maximum trace length of 50 mm and avoid running them parallel to switching power or RF traces to prevent programming noise coupling. Place a 4.7 kohm pull-up resistor on MCLR if not using the internal weak pull-up configuration. The SSOP-20 footprint requires thermal relief pads on each land for hand-soldering rework; avoid vias-in-pad without filled-and-plated-over construction to prevent solder starvation during reflow.
Do not exceed the absolute maximum Vdd of 3.6V on the LF variant - applying 5V will damage the silicon. Configuration bits must be programmed explicitly: select INTIO67 (internal 16 MHz) for clock source, enable MCLR if using external reset, and disable the watchdog timer in the WDTCON register if not used. Failing to disable the WDT in deep-sleep designs causes unexpected periodic wake-ups. The LF silicon revision is distinct from the F silicon revision - verify the silicon revision ID before reusing code from older PIC18LF13K50/K22 projects.
Keep analog input traces (AN0-AN17) short and away from digital switching signals. Use a ground plane under the SSOP-20 footprint with stitching vias every 5-10 mm around the perimeter; this reduces EMI susceptibility and improves ADC noise performance. For capacitive-touch designs, route the touch sensor traces with a minimum 0.5 mm gap to adjacent traces and surround the touch area with a ground-ring guard trace per Microchip application note AN1101. Use a 5 mm minimum air gap between adjacent touch sensors to prevent false triggering.
合規資訊
RoHS compliant per Microchip product page; lead-free SSOP-20 package; not AEC-Q100 qualified (industrial grade only). Conflict-minerals compliant per Microchip declaration.
