PIC18LF24K22-I/SO - 8-bit 64MHz 16KB Flash XLP MCU | Microchip
MPN: PIC18LF24K22-I/SO ✓ Hoạt độngPIC18LF24K22-I/SO Tóm tắt
A microcontroller is a single-chip computer that integrates a CPU core, volatile and non-volatile memory, programmable I/O peripherals, and dedicated hardware blocks (timers, ADC, communication peripherals) into one IC. The PIC18 family sits in Microchip's 8-bit MCU lineup with an enhanced RISC architecture and 16-bit-wide instruction words; the "LF24K22" series extends the family with XLP ultra-low-power modes, larger RAM, more peripherals, and a faster 64 MHz internal oscillator pipeline compared with the earlier K20 generation.
Key features of the PIC18LF24K22 include 16KB (8K x 16 words) self-programmable Flash, 768 bytes of RAM, 256 bytes of EEPROM, a 10-bit ADC (with up to 17 channels), three CCP/ECCP modules, two USART (enhanced) modules, two MSSP (I2C/SPI) modules, and 25 general-purpose I/O pins. The device supports 1.8V to 3.6V single-supply operation with nanoWatt XLP Idle, Sleep, and deep-sleep modes that drop current consumption into the nanoampere range - critical for battery-powered and energy-harvesting designs.
The architecture combines a high-performance 16-bit Harvard bus, hardware multiplier, C-compiler-friendly memory map, and on-chip debug via ICD. The 64 MHz oscillator drives a four-clock-per-instruction pipeline, delivering up to 16 MIPS throughput. The device also integrates a mTouch capacitive-touch sensing peripheral and a CTMU module for advanced touch interfaces.
Typical applications include battery-powered wireless sensor nodes, low-power IoT endpoints, portable medical instrumentation, remote controls, e-metering / smart thermostats, and consumer products requiring USB-less general-purpose 8-bit control. The wide SOIC-28 footprint simplifies hand-soldering and rework during prototyping.
When designing with this part, ensure decoupling with 100 nF ceramic capacitors placed within 5 mm of VDD/VSS pairs, and configure the CONFIG registers to enable the lowest-power Sleep mode compatible with the application's wake-up latency budget. Avoid leaving floating analog inputs - tie unused ANx pins to VDD or VSS through a defined resistor to reduce ADC leakage.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found on the manufacturer datasheet, with all data cross-checked against Microchip's PIC18F24K22/LF24K22 datasheet (DS41398) and current distributor listings as of 2026-09-28.
Bộ thay thế dễ dàng lắp đặt cho PIC18LF24K22-I/SO — 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 PIC18LF24K22-I/SO (cùng hình factor và footprint) — khác nhau ở Package, ADC, I/O Pins, Operating Voltage Range, Program Memory (Flash).
PIC18F24K22-I/SO
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC18LF24K22-I/MV
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18LF23K22-I/SO
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC18LF24K22-E/SO
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC18LF24K22T-I/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18LF24J11-I/SO
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
PIC18LF24K22-I/SO Tỷ lệ tối đa & tính chất điện
| Product Family | PIC18F/LF24K22 (8-bit) |
| Core Architecture | Enhanced RISC Harvard, 16-bit instruction |
| CPU Speed (Max) | 64 MHz (16 MIPS) |
| Program Memory (Flash) | 16 KB (8K x 16 words) |
| Data SRAM | 768 bytes |
| Data EEPROM | 256 bytes |
| Operating Voltage Range | 1.8 V to 3.6 V (LF variant) |
| Khoảng nhiệt độ hoạt động | -40 C to +85 C (Industrial, "I") |
| I/O Pins | 25 |
| ADC | 10-bit, up to 17 channels |
| Timers | Timer0/1/2/3 + 3x CCP/ECCP + WDT |
| Communication Peripherals | 2x EUSART, 2x MSSP (I2C/SPI) |
| Hộp | SOIC-28 (Wide Body, 7.50 mm) |
| Kiểu lắp đặt | Surface Mount |
| Special Features | nanoWatt XLP, mTouch, CTMU, on-chip debug |
| Trạng thái RoHS | Compliant |
Cấu hình chân PIC18LF24K22-I/SO
| Chân 1 | MCLR/RE3 — Master Clear (reset) input or digital input RE3 |
| Chân 2 | RA0/AN0 — PORTA bit 0 / analog input AN0 |
| Chân 3 | RA1/AN1 — PORTA bit 1 / analog input AN1 |
| Chân 4 | RA2/AN2 — PORTA bit 2 / analog input AN2 |
| Chân 5 | RA3/AN3/VREF+ — PORTA bit 3 / AN3 / positive voltage reference |
| Chân 6 | RA4/AN4/T0CKI — PORTA bit 4 / AN4 / Timer0 clock input |
| Chân 7 | RA5/AN5/SS/HLVDIN — PORTA bit 5 / AN5 / SPI SS / HLVD input |
| Chân 8 | VSS — Ground reference |
| Chân 9 | RA7/OSC1/CLKI — PORTA bit 7 / oscillator crystal input / external clock |
| Chân 10 | RA6/OSC2/CLKO — PORTA bit 6 / oscillator crystal output / clock out |
| Chân 11 | RC0/SOSCO — PORTC bit 0 / secondary oscillator output (Timer1) |
| Chân 12 | RC1/SOSCI — PORTC bit 1 / secondary oscillator input (Timer1) |
| Chân 13 | RC2/CCP1 — PORTC bit 2 / Capture-Compare-PWM 1 |
| Chân 14 | RC3/SCK/SCL — PORTC bit 3 / SPI SCK / I2C SCL |
| Chân 15 | RC4/SDI/SDA — PORTC bit 4 / SPI SDI / I2C SDA |
| Chân 16 | RC5/SDO — PORTC bit 5 / SPI SDO |
| Chân 17 | RC6/TX/CK — PORTC bit 6 / EUSART TX / clock |
| Chân 18 | RC7/RX/DT — PORTC bit 7 / EUSART RX / data |
| Chân 19 | VSS — Ground reference |
| Chân 20 | VDD — Positive supply voltage (1.8 V to 3.6 V for LF) |
| Chân 21 | RB0/AN12/INT0 — PORTB bit 0 / AN12 / external interrupt 0 |
| Chân 22 | RB1/AN10/INT1 — PORTB bit 1 / AN10 / external interrupt 1 |
| Chân 23 | RB2/AN8 — PORTB bit 2 / analog input AN8 |
| Chân 24 | RB3/AN9/CCP2 — PORTB bit 3 / AN9 / CCP2 |
| Chân 25 | RB4/AN11 — PORTB bit 4 / analog input AN11 |
| Chân 26 | RB5/AN13 — PORTB bit 5 / analog input AN13 |
| Chân 27 | RB6/PGC — PORTB bit 6 / ICSP clock (programming/debug) |
| Chân 28 | RB7/PGD — PORTB bit 7 / ICSP data (programming/debug) |
Ứng dụng tiêu biểu
PIC18LF24K22-I/SO phù hợp cho 6 Áp dụngs: Battery-Powered Wireless Sensor Node, Portable Glucose / Medical Meter, Smart Thermostat / HVAC Controller, Industrial Sensor Transmitter (4-20 mA), Remote Control / Consumer HID Device, IoT Edge Node with Security Co-Processor.
Battery-Powered Wireless Sensor Node
The PIC18LF24K22-I/SO is well suited for battery-powered wireless sensor endpoints thanks to its nanoWatt XLP technology, which drops Sleep current to tens of nanoamperes while retaining RAM and rapid wake-up. The 1.8 V to 3.6 V supply range matches two- or three-alkaline-cell packs and CR2032 lithium coin cells directly, eliminating boost regulators. With 16 KB Flash, 768 B RAM, and integrated 10-bit ADC, it can run a sensor-sampling loop, buffer data, and drive an SPI-attached radio such as the MRF24J40 or SX1276 without external memory. The 64 MHz core provides 16 MIPS, sufficient to handle radio packet framing, AES-light crypto, and periodic sensor reads.
Được đề xuất
Portable Glucose / Medical Meter
Medical handheld meters benefit from the PIC18LF24K22-I/SO's low-voltage operation, integrated ADC, and EEPROM for storing calibration constants and patient history. The 256-byte EEPROM supports 1M erase/write cycles, ideal for logging strip calibration or test counts, while 16 KB Flash fits a small RTOS or state-machine firmware with USB-CDC or UART output. The mTouch and CTMU peripherals enable capacitive buttons or strip-detection electrodes without dedicated touch hardware. Industrial temperature grade (-40 to +85 C) supports the thermal range of POC diagnostics without requiring the extended-grade variant.
Được đề xuất
Smart Thermostat / HVAC Controller
Smart thermostats and HVAC wall controllers use the PIC18LF24K22-I/SO to read multiple temperature sensors, drive a TFT or segment LCD, handle capacitive touch keys, and communicate with a host network over UART or SPI. The 25 GPIO pins and 17-channel 10-bit ADC support multi-zone temperature sensing, relay drive for HVAC stages, and rotary encoder inputs. XLP low-power modes keep quiescent draw below 100 uA between temperature samples, helping meet ENERGY STAR standby budgets. The SOIC-28 wide-body package simplifies hand-rework during field-service updates and allows easy clip-on programming.
Được đề xuất
Industrial Sensor Transmitter (4-20 mA)
Loop-powered 4-20 mA sensor transmitters leverage the PIC18LF24K22-I/SO's 1.8 V to 3.6 V supply to operate from a precision shunt regulator on the loop, eliminating local power. The 10-bit ADC with up to 17 channels handles multiple sensor inputs (temperature, pressure, flow), while the integrated EEPROM stores calibration coefficients per sensor module. The 16 KB Flash fits sensor-linearization libraries and HART or proprietary framing, and the SOIC-28 wide-body package supports standard industrial module form factors. Industrial -40 to +85 C operation meets process-plant requirements.
Được đề xuất
Remote Control / Consumer HID Device
Universal remote controls, game controllers, and consumer HID devices fit well on the PIC18LF24K22-I/SO thanks to its capacitive touch (mTouch + CTMU) peripherals for buttons and sliders, plus low-power Sleep modes that extend battery life into the multi-year range. The 64 MHz CPU runs IR protocols (RC5, NEC, SIRC), BLE HID bridging, or 2.4 GHz proprietary RF stacks over SPI-attached radios. 16 KB Flash stores device code-tables and configuration, and SOIC-28 wide-body simplifies through-hole-friendly prototyping for hand-soldered early designs.
Được đề xuất
IoT Edge Node with Security Co-Processor
IoT edge nodes use the PIC18LF24K22-I/SO as an application MCU alongside an ATECC608B or similar secure element. The MCU handles sensor sampling, local control loops, and host-side data formatting, while the companion chip performs ECC/HMAC authentication and secure storage. The 16 KB Flash, 64 MHz core, and 25 GPIO comfortably support MQTT-SN or CoAP framing over UART-attached Wi-Fi/BLE modules, and the LF 3.6 V rail aligns with 3.3 V module power domains. Industrial temperature grade supports outdoor enclosure operation.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC18LF24K22-I/SO — 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 | PIC18F24K22-I/SO | PIC18LF23K22-I/SO | PIC18LF24K22-E/SO | PIC18LF24K22T-I/SO |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | SOIC-28 (Wide Body) | SOIC-28 (Wide Body) | SOIC-28 (Wide Body) | SOIC-28 (Wide Body) | SOIC-28 (Wide Body) |
| Flash Memory | 16 KB | 16 KB | 8 KB (-50%) | 16 KB | 16 KB |
| SRAM | 768 bytes | 768 bytes | 512 bytes (-33%) | 768 bytes | 768 bytes |
| Supply Voltage Range | 1.8 V to 3.6 V (LF) | 1.8 V to 5.5 V (F) | 1.8 V to 3.6 V (LF) | 1.8 V to 3.6 V (LF) | 1.8 V to 3.6 V (LF) |
| Operating Temperature | -40 C to +85 C (Industrial) | -40 C to +85 C | -40 C to +85 C | -40 C to +125 C (Extended) | -40 C to +85 C |
| CPU Speed (Max) | 64 MHz / 16 MIPS | 64 MHz / 16 MIPS | 64 MHz / 16 MIPS | 64 MHz / 16 MIPS | 64 MHz / 16 MIPS |
| GPIO Pins | 25 | 25 | 25 | 25 | 25 |
| EEPROM | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 256 bytes |
Bảo phân biệt quan trọng
- Lower supply voltage ceiling suits 3.3 V battery designs (vsPIC18F24K22-I/SO)
- 16 KB Flash doubles the smaller-memory variant (vsPIC18LF23K22-I/SO)
- Industrial temperature range sufficient for most consumer / industrial use (vsPIC18LF24K22-E/SO)
Ghi chú thiết kế
Estimated: configuring the PIC18LF24K22-I/SO in Sleep mode with peripherals disabled typically yields <100 nA quiescent current at 3.3 V. Place a 100 nF decoupling capacitor within 5 mm of the VDD pin (pin 20) and a bulk 10 uF tantalum or ceramic near the IC. Tie the MCLR pin to VDD through a 10 kohm resistor for reliable reset unless external reset control is required. For battery applications, route all unused I/O as outputs driven low to minimize digital-input leakage currents that can dominate nanoampere Sleep budgets.
Keep the ICSP programming pins RB6/PGC (pin 27) and RB7/PGD (pin 28) accessible on the PCB or via test points to support field firmware updates. The SOIC-28 wide-body footprint permits easy hand-soldering and rework. When using the internal 16 MHz HFINTOSC with PLL for 64 MHz operation, route oscillator traces away from switching power inductors to avoid jitter. Analog inputs AN0-AN13 should be kept short and guarded with a ground trace to minimize ADC crosstalk on the 17-channel 10-bit ADC.
Estimated: do not exceed 3.6 V on the LF variant - connecting a 5 V rail directly to VDD will damage the part. Verify CONFIG1L register settings for oscillator selection and CONFIG1H for WDT behavior before code release, since PIC18 configuration bits are non-volatile and lock once programmed. When migrating code from PIC18F24K22 to PIC18LF24K22, ensure any 5V-peripheral interfaces are level-shifted; the LF GPIO is not 5V-tolerant on digital inputs above 3.6 V. Finally, leave a 5 mm keep-out under the SOIC pads for the heatsink-less thermal path to the PCB copper.
Thông tin tuân thủ
RoHS and REACH compliant per Microchip product page and DigiKey listing. Not AEC-Q100 qualified (industrial-grade only).
