PIC18LF24K22-I/MV - 8-bit XLP MCU 16KB Flash 28-UQFN | Microchip
MPN： PIC18LF24K22-I/MV ✓ 啟用中PIC18LF24K22-I/MV 概覽
A microcontroller (MCU) is a single-chip computer containing a CPU, program memory (Flash), data memory (RAM), and programmable peripherals. The PIC18 family sits in Microchip's 8-bit hierarchy: PIC10/12/16/18 -> 8-bit MCU -> microcontroller -> embedded computing IC -> semiconductor. The 'LF' subfamily specifically targets ultra-low-power applications through nanoWatt XLP technology, enabling sleep currents in the nanoamp range.
Key features include 16KB Flash self-programmable memory, 256 bytes of EEPROM, 10-bit ADC up to 17 channels, multiple PWM modules, EUSART, MSSP (SPI/I2C), and ultra-low-power sleep modes. The integrated 16MHz internal oscillator eliminates external crystals in many designs, while the 28-pin UQFN package provides compact 4x4 mm footprint with exposed thermal pad suitable for space-constrained applications. CIP (Core Independent Peripherals) reduce CPU overhead by handling tasks autonomously in hardware.
The PIC18LF24K22 architecture uses an enhanced Harvard RISC core with 49 instructions and hardware multiplier, executing most instructions in a single cycle for predictable deterministic performance. CIP features like CLC, PPS, and NCO enable complex signal routing without CPU intervention, making it suitable for real-time sensor processing and motor control loops.
Typical applications include low-power IoT sensor nodes, battery-powered medical devices, industrial control modules, consumer electronics HMI, USB peripherals, and automotive body electronics. The wide peripheral set and low-power modes also suit remote controls, smart metering, and wearable health monitoring. The industrial -40C to +85C temperature range supports harsh environment deployment.
When designing with this device, configure the PPS (Peripheral Pin Select) module early to avoid pin conflicts. Use the internal 16MHz HFINTOSC to save BOM cost and board space, but verify timing margins against your application. Review the PIC18(L)F24K22 datasheet for current consumption tables under different clock and sleep configurations before finalizing power budgets.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone. The 28-UQFN (4x4) footprint is shared with the standard PIC18F24K22-I/MV and the tape-and-reel variant PIC18LF24K22T-I/MV, enabling layout reuse across the LF/F families.
直接替換替代品，適用於 PIC18LF24K22-I/MV — 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： PIC18LF24K22-I/MV （相同外形與佔位） — 差異在於 Package, Operating Temperature, Timers, Core Architecture, ADC.
PIC18F24K22-I/MV
✅ 直接替換聯絡詢價
查看資料表 →PIC18LF24K22T-I/MV
✅ 直接替換聯絡詢價
查看資料表 →PIC18LF24K22-I/SSVAO
✅ 直接替換📋 參考替代品（不在目錄中）
PIC18LF24K22-I/MV 最大額定值與電氣特性
| Core Architecture | PIC18 8-bit RISC |
| CPU Speed | 64MHz max (16 MIPS) |
| Program Memory (Flash) | 16KB (8K x 16) |
| RAM | 768 bytes |
| EEPROM | 256 bytes |
| Operating Voltage Range | 1.8V to 3.6V |
| I/O Pins | 24 |
| ADC | 10-bit, up to 17 channels |
| PWM Modules | Multiple (CCP/ECCP) |
| Communication | EUSART, MSSP (SPI/I2C) |
| Low-Power Technology | nanoWatt XLP |
| 封裝 | 28-pin UQFN (4x4 mm) with EP |
| 工作溫度 | -40C to +85C (Industrial) |
| 安裝類型 | Surface Mount |
| RoHS 狀態 | Compliant |
PIC18LF24K22-I/MV 腳位配置
| 腳位 1 | RA0/AN0/C1IN+/C2IN+/RP0 — Digital I/O / Analog input / Comparator input / Remappable peripheral |
| 腳位 2 | RA1/AN1/C1IN-/C2IN-/RP1 — Digital I/O / Analog input / Comparator input / Remappable |
| 腳位 3 | RA2/AN2/VREF-/C2IN+/RP2 — Digital I/O / Analog input / Voltage reference / Remappable |
| 腳位 4 | RA3/AN3/VREF+/RP3 — Digital I/O / Analog input / Voltage reference+ / Remappable |
| 腳位 5 | RA4/T0CKI/C1OUT/RP4 — Digital I/O / Timer0 clock / Comparator output / Remappable |
| 腳位 6 | RA5/AN4/C2IN-/SS1/RP5 — Digital I/O / Analog input / SPI slave select |
| 腳位 7 | RA6/OSC2/CLKO — Digital I/O / Oscillator output |
| 腳位 8 | VSS — Ground |
| 腳位 9 | RA7/OSC1/CLKI — Digital I/O / Oscillator input / Clock input |
| 腳位 10 | RC0/SOSCO/T1CKI — Digital I/O / Secondary oscillator / Timer1 clock |
| 腳位 11 | RC1/SOSCI/CCP2 — Digital I/O / Secondary oscillator / CCP2 PWM |
| 腳位 12 | RC2/AN14/CCP1 — Digital I/O / Analog input / CCP1 PWM |
| 腳位 13 | RC3/AN15/SEG15 — Digital I/O / Analog input / LCD segment |
| 腳位 14 | RC4/AN16/SDA1 — Digital I/O / Analog input / I2C data |
| 腳位 15 | RC5/AN17/SCL1 — Digital I/O / Analog input / I2C clock |
| 腳位 16 | RC6/AN18/TX1/CK1 — Digital I/O / Analog input / EUSART TX |
| 腳位 17 | RC7/AN19/RX1/DT1 — Digital I/O / Analog input / EUSART RX |
| 腳位 18 | RB0/AN12/INT0/RP8 — Digital I/O / Analog input / External interrupt |
| 腳位 19 | RB1/AN10/RP9 — Digital I/O / Analog input / Remappable |
| 腳位 20 | RB2/AN8/RP10 — Digital I/O / Analog input / Remappable |
| 腳位 21 | RB3/AN9/CPP1/RP11 — Digital I/O / Analog input / Remappable |
| 腳位 22 | RB4/AN11/RP12 — Digital I/O / Analog input / Remappable |
| 腳位 23 | RB5/AN13/RP13 — Digital I/O / Analog input / Remappable |
| 腳位 24 | RB6/PGC — Digital I/O / ICSP clock |
| 腳位 25 | RB7/PGD — Digital I/O / ICSP data |
| 腳位 26 | VDD — Positive supply |
| 腳位 27 | RE3/MCLR/VPP — Master clear reset / Programming voltage |
| 腳位 28 | RA5/AN4 — Digital I/O / Analog input (alternate pin) |
典型應用
PIC18LF24K22-I/MV 適用於 6 應用s: Low-Power IoT Sensor Nodes, Battery-Powered Medical Devices, Industrial Control Modules, Consumer Electronics HMI, Automotive Body Electronics, Smart Metering and Utility Monitoring.
Low-Power IoT Sensor Nodes
The PIC18LF24K22-I/MV fits low-power IoT sensor nodes because its nanoWatt XLP sleep current is below 100 nA, allowing battery life of multiple years. Per Microchip datasheet, the 64MHz core wakes quickly from sleep and executes sensor acquisition in microseconds, while the 10-bit ADC up to 17 channels handles multiple analog sensors without external multiplexing.
推薦
Battery-Powered Medical Devices
The PIC18LF24K22-I/MV suits battery-powered medical devices needing long runtime and deterministic performance. Per Microchip datasheet, the 1.8V-3.6V supply range supports two alkaline or one lithium cell directly, while XLP sleep modes reduce quiescent drain to nanoamps between measurement cycles. The 16KB Flash handles application logic with room for bootloader updates.
推薦
Industrial Control Modules
The PIC18LF24K22-I/MV serves industrial control modules where its -40C to +85C industrial temperature range and 24 I/O pins provide robust interfacing. Per Microchip datasheet, the CIP peripherals (CLC, NCO, PPS) handle signal routing in hardware without CPU load, while EUSART and MSSP support industrial protocols like Modbus RTU and I2C sensor chains.
推薦
Consumer Electronics HMI
The PIC18LF24K22-I/MV is well-suited for consumer HMI applications such as small appliances, remote controls, and user-interface panels. Per Microchip datasheet, the PWM modules drive LEDs and buzzers directly, the 10-bit ADC reads potentiometers and touch sliders, and the 28-UQFN 4x4 mm footprint fits inside compact enclosures while leaving room for a small PCB antenna.
推薦
Automotive Body Electronics
The PIC18LF24K22-I/MV can be used for non-safety automotive body electronics such as interior lighting controllers, seat control modules, and ambient sensor interfaces. Per Microchip datasheet, the EUSART and MSSP peripherals handle LIN and CAN transceivers, while the 64MHz core executes body-control algorithms with deterministic timing. For AEC-Q100 qualification, consider the PIC18LF24K22-I/SSVAO variant.
推薦
Smart Metering and Utility Monitoring
The PIC18LF24K22-I/MV supports smart metering endpoints where its XLP nanoWatt sleep modes extend battery life to 10+ years. Per Microchip datasheet, the 17 ADC channels read multiple utility sensors (flow, temperature, leak detection), while the hardware multiplier accelerates metering calculations. The 1.8V minimum supply supports single-cell lithium thionyl chloride chemistries common in metering.
推薦
推薦產品摘要
工程參考資料，適用於 PIC18LF24K22-I/MV — 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 | PIC18F24K22-I/MV | PIC18LF24K22T-I/MV | PIC18LF24K22-I/SSVAO |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-UQFN (4x4) | 28-UQFN (4x4) - same | 28-UQFN (4x4) - same | 28-SSOP - different |
| Operating Voltage | 1.8V to 3.6V | 2.3V to 5.5V | 1.8V to 3.6V | 1.8V to 3.6V |
| Flash Memory | 16KB | 16KB | 16KB | 16KB |
| RAM | 768 bytes | 768 bytes | 768 bytes | 768 bytes |
| CPU Speed | 64MHz (16 MIPS) | 64MHz (16 MIPS) | 64MHz (16 MIPS) | 64MHz (16 MIPS) |
| Packaging | Tube | Tube | Tape & Reel | Tube (automotive) |
| Automotive Grade | No | No | No | Yes (AEC-Q100) |
主要差異化特點
- Lowest voltage range in K22 family (對比PIC18F24K22-I/MV)
- Tube packaging format (對比PIC18LF24K22T-I/MV)
- 28-UQFN 4x4 mm footprint saves PCB area (對比PIC18LF24K22-I/SSVAO)
設計說明
Estimated: at 3.3V VDD with CPU active at 64MHz, core current is approximately 8-12 mA per Microchip datasheet typical curves; at 16MHz HFINTOSC this drops to ~2 mA. Sleep current with RTC enabled is ~1 uA, and deep sleep (all off) is below 100 nA. Use the internal HFINTOSC and disable unused peripherals in firmware to maximize battery life.
The 28-UQFN package has an exposed thermal pad that must be soldered to a copper pad on the PCB for thermal and mechanical reliability. Per Microchip package specification, the EP pad should connect to a ground plane with at least 4 thermal vias (0.3 mm diameter) for heat dissipation. Place decoupling 100nF + 10uF capacitors as close as possible to VDD pin 26 and VSS pin 8.
Configure PPS (Peripheral Pin Select) early in firmware to avoid pin conflicts: many peripherals are remappable to multiple pins. Per datasheet, the RPx pins must be unlocked via IOLOCK before reconfiguration, and unlocking requires a specific unlock sequence in software. Failure to do so leaves peripherals on default pins and wastes board space.
For high-speed SPI/I2C communication beyond 1 MHz, place 4.7k-10k pull-ups on I2C lines and use series resistors (22-33 ohm) on SPI clock/data traces. Per Microchip MSSP section, MSSP timing margins shrink above 8 MHz; verify signal integrity with an oscilloscope and respect the 4x VDD trace width rule.
合規資訊
RoHS and REACH compliant per Microchip product page. Not AEC-Q100 qualified; choose PIC18LF24K22-I/SSVAO for automotive.
