PIC18LF23K22-I/MV - 8-bit XLP MCU, 8KB Flash, 28-UQFN | Microchip
MPN: PIC18LF23K22-I/MV ✓ Hoạt độngPIC18LF23K22-I/MV Tóm tắt
What is a microcontroller (MCU)? An MCU is a single-chip computer that integrates a CPU core, program and data memory, peripherals, and I/O onto one silicon die. The PIC18 family is Microchip's high-performance 8-bit architecture, positioned above the baseline PIC16 and PIC10/12/16 families and below the 16-bit dsPIC and 32-bit PIC32 families. Within the PIC18K sub-family, the 'K' parts target low-power and high-precision analog applications, the 'LF' suffix specifies the 1.8 V–3.6 V extended power range, and the 'F' (non-LF) variants are 5 V tolerant.
Key features of this part include a 12-bit ADC with up to 17 channels, mTouch™ capacitive touch support, multiple communication peripherals (I2C, SPI, EUSART), four 8-bit timer/counters and two CCP modules, plus a nanoWatt XLP power management unit with multiple idle and sleep modes. The device integrates a precision internal oscillator and operates across the industrial temperature range of -40 °C to +85 °C.
Architecturally, the PIC18LF23K22 uses an enhanced Harvard architecture with separate program and data buses, a 16-bit instruction word, and a hardware multiply/divide accelerator. Its 31-level hardware stack and 74 instructions provide deterministic interrupt response, while the peripheral pin-select (PPS) subsystem remaps digital peripherals to any I/O pin to simplify PCB routing on space-constrained boards.
Typical applications include battery-powered sensor nodes, low-power IoT edge devices, capacitive-touch user interfaces, small home appliances, and portable medical accessories where low sleep current, small UQFN footprint, and integrated analog peripherals are critical. The wide 1.8–3.6 V operating range allows direct connection to single-cell Li-ion or two-cell alkaline battery stacks.
A key design consideration: the 28-UQFN package has an exposed thermal pad that MUST be soldered to the PCB ground plane to meet thermal and mechanical reliability targets; for hand-prototyping or breadboard builds, choose the 28-SPDIP (PIC18LF23K22-I/SP) variant instead. The LF voltage range also requires careful verification of analog reference voltages—using a 5 V reference with a 3.3 V supply will damage the ADC.
This page synthesizes Microchip datasheet specifications, distributor pricing, drop-in alternative MPNs, and practical design notes not consolidated on the manufacturer product page.
Bộ thay thế dễ dàng lắp đặt cho PIC18LF23K22-I/MV — 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 PIC18LF23K22-I/MV (cùng hình factor và footprint) — khác nhau ở Package, Operating Temperature, Program Memory (Flash), Core Architecture, I/O Pins.
PIC18LF23K22-I/ML
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18LF23K22T-I/MV
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18LF24K22-I/MV
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F23K22-I/MV
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18LF25K22-I/MV
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC18LF23K22-I/MV Tỷ lệ tối đa & tính chất điện
| Core Architecture | PIC 8-bit (Enhanced Harvard) |
| Series | PIC® XLP™ 18K |
| Program Memory (Flash) | 8 KB (4K x 16) |
| RAM | 768 bytes |
| EEPROM | 256 bytes |
| Maximum CPU Speed | 64 MHz |
| Supply Voltage (VDD) | 1.8 V to 3.6 V |
| Nhiệt độ hoạt động | -40 °C to +85 °C (Industrial) |
| Hộp | 28-UQFN (4x4 mm) - MV |
| Số chân | 28 |
| ADC | 12-bit, up to 17 channels |
| Communication Peripherals | 1x EUSART, 1x I2C, 1x SPI |
| Timers | 4x 8-bit + 2x CCP |
| Touch Sensing | mTouch™ capacitive touch supported |
| Low-Power Technology | nanoWatt XLP™ (sleep current < 100 nA) |
| Kiểu lắp đặt | Surface Mount |
Cấu hình chân PIC18LF23K22-I/MV
| Chân 1 | RA2 — Bidirectional I/O / analog input / CVref |
| Chân 2 | RA3 — Bidirectional I/O / analog input |
| Chân 3 | RA4 — Bidirectional I/O / analog input / T0CKI |
| Chân 4 | RA5 — Bidirectional I/O / analog input / SS |
| Chân 5 | VDD — Positive supply voltage |
| Chân 6 | VSS — Ground reference |
| Chân 7 | RA7 — Bidirectional I/O / oscillator input |
| Chân 8 | RA6 — Bidirectional I/O / oscillator output |
| Chân 9 | RC0 — Bidirectional I/O / analog input / PWM |
| Chân 10 | RC1 — Bidirectional I/O / analog input / PWM |
| Chân 11 | RC2 — Bidirectional I/O / analog input / PWM |
| Chân 12 | RC3 — Bidirectional I/O / analog input / SPI SCK |
| Chân 13 | RC4 — Bidirectional I/O / analog input / SPI SDI |
| Chân 14 | RC5 — Bidirectional I/O / analog input / SPI SDO |
| Chân 15 | RC6 — Bidirectional I/O / TX/CK |
| Chân 16 | RC7 — Bidirectional I/O / RX/DT |
| Chân 17 | RB7 — Bidirectional I/O / I2C SDA |
| Chân 18 | RB6 — Bidirectional I/O / I2C SCL |
| Chân 19 | RB5 — Bidirectional I/O / PWM |
| Chân 20 | RB4 — Bidirectional I/O / PWM |
| Chân 21 | RB3 — Bidirectional I/O / CCP input/output |
| Chân 22 | RB2 — Bidirectional I/O / analog input |
| Chân 23 | RB1 — Bidirectional I/O / analog input / INT1 |
| Chân 24 | RB0 — Bidirectional I/O / analog input / INT0 |
| Chân 25 | RA1 — Bidirectional I/O / analog input / CVref- |
| Chân 26 | RA0 — Bidirectional I/O / analog input |
| Chân 27 | VSS — Ground (second pad) |
| Chân 28 | VDD — Positive supply (second pad) |
| Chân EP | EP — Exposed thermal pad - connect to VSS (GND) |
Ứng dụng tiêu biểu
PIC18LF23K22-I/MV phù hợp cho 6 Áp dụngs: Battery-Powered IoT Sensor Node, Capacitive Touch User Interface, Portable Medical Accessories, Small Home Appliances, Industrial Sensor Transmitters, Remote Control and HMI Keypads.
Battery-Powered IoT Sensor Node
The PIC18LF23K22-I/MV is well-suited for battery-powered IoT sensor nodes thanks to its nanoWatt XLP technology delivering sub-100 nA deep sleep current and 1.8 V to 3.6 V operation compatible with single-cell Li-ion or two-AAA battery stacks. The integrated 12-bit ADC, EUSART, I2C, and SPI peripherals allow direct connection to temperature, humidity, and motion sensors without external glue logic. The 4x4 mm 28-UQFN footprint enables compact wearable and wireless sensor form factors.
Được đề xuất
Capacitive Touch User Interface
The PIC18LF23K22-I/MV's mTouch™ capacitive touch peripheral and high-resolution 12-bit ADC make it a strong choice for capacitive touch buttons, sliders, and proximity sensors in home appliances and consumer electronics. Peripheral Pin Select (PPS) remaps touch channels to any I/O pin, simplifying PCB layout under tight mechanical constraints. The 28-UQFN 4x4 mm package fits behind thin overlays in space-constrained UI modules.
Được đề xuất
Portable Medical Accessories
Low-power operation, industrial temperature range, and small footprint make the PIC18LF23K22-I/MV suitable for portable medical accessories such as glucose meters, pulse oximeters, and personal health monitors. The 12-bit ADC captures analog signals from biomedical sensors with sufficient resolution for vital-sign analysis. The wide 1.8 V to 3.6 V range supports direct single-cell Li-ion battery operation without boost converters.
Được đề xuất
Small Home Appliances
Coffee makers, blenders, air purifiers, and other small home appliances benefit from the PIC18LF23K22-I/MV's combination of low cost, integrated peripherals, and robust 8-bit core. The PIC18 architecture's deterministic interrupt response and 31-level hardware stack ensure reliable real-time control of motors, heaters, and displays. The 28-UQFN package and 1.8 V minimum supply enable compact appliance PCBs with simple linear regulators.
Được đề xuất
Industrial Sensor Transmitters
Industrial 4-20 mA sensor transmitters, RTD conditioners, and process control modules can leverage the PIC18LF23K22-I/MV's 12-bit ADC, 1.8-3.6 V operation, and industrial -40 °C to +85 °C temperature range. The device's nanoWatt XLP technology enables loop-powered transmitters that draw minimal current from the 4-20 mA loop. EUSART with LIN support simplifies integration into industrial sensor networks.
Được đề xuất
Remote Control and HMI Keypads
Consumer remote controls, security keypads, and small HMI panels benefit from the PIC18LF23K22-I/MV's capacitive touch support, low sleep current for multi-year battery life, and small 28-UQFN footprint. The integrated EUSART supports IR transmission for remote control applications. The PIC18 instruction set and MPLAB X IDE toolchain accelerate firmware development and field-proven reliability.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC18LF23K22-I/MV — 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 | PIC18LF23K22-I/ML | PIC18LF23K22T-I/MV | PIC18LF24K22-I/MV | PIC18F23K22-I/MV | PIC18LF25K22-I/MV |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-UQFN (4x4 mm) - MV | 28-QFN (6x6 mm) - ML | 28-UQFN (4x4 mm) - MV (same) | 28-UQFN (4x4 mm) - MV (same) | 28-UQFN (4x4 mm) - MV (same) | 40-pin (NOT 28-UQFN) |
| Flash Memory | 8 KB | 8 KB | 8 KB | 16 KB | 8 KB | 32 KB |
| RAM | 768 bytes | 768 bytes | 768 bytes | 768 bytes | 768 bytes | 2048 bytes |
| Operating Voltage | 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) |
| Maximum CPU Speed | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz |
| ADC Resolution | 12-bit | 12-bit | 12-bit | 12-bit | 12-bit | 12-bit |
| EEPROM | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 256 bytes |
| Package Code | MV (UQFN-28 4x4) | ML (QFN-28 6x6) | MV (UQFN-28 4x4) | MV (UQFN-28 4x4) | MV (UQFN-28 4x4) | MV (40-pin variant) |
Bảo phân biệt quan trọng
- Smallest package footprint in the PIC18F/LF23K22 family (vsPIC18LF23K22-I/ML)
- Low-voltage 1.8 V operation enables single-cell Li-ion use (vsPIC18F23K22-I/MV)
- nanoWatt XLP technology achieves sub-100 nA sleep current (vsPIC18LF25K22-I/MV)
Ghi chú thiết kế
Estimated: The 28-UQFN package has an exposed thermal pad (EP) that MUST be soldered to a ground plane on the PCB. Without proper soldering, mechanical reliability and thermal dissipation are compromised, and the device may fail during thermal cycling. Use a via array under the EP to connect to an internal ground plane; recommended via diameter is 0.2-0.3 mm with 0.5-0.8 mm pitch to allow solder wicking while preventing solder starvation.
Place a 100 nF decoupling capacitor as close as possible to each VDD pin and a single 10 µF bulk capacitor near the device. The PIC18LF23K22's nanoWatt XLP technology requires clean power to achieve the sub-100 nA deep-sleep current - noisy supplies can increase sleep current by orders of magnitude. For battery applications, use a low-Iq LDO such as MCP1700 (1.6 µA quiescent) to preserve battery life.
Do not exceed 3.6 V on VDD - the LF variant is NOT 5 V tolerant. Using the LF part on a 5 V rail will permanently damage the device; choose the PIC18F23K22-I/MV (2.3-5.5 V variant) instead. Also, ensure configuration bits (FOSC, WDTE, etc.) are correctly programmed before code execution; an unconfigured part will fail to start. Use MPLAB X IDE with the PICkit 5 or Snap debugger for safe configuration.
Keep analog inputs (AN0-ANx) short and away from switching signals to preserve ADC accuracy. The 12-bit ADC requires careful analog ground layout - a single-point star ground from the analog section to the digital ground near the MCU's VSS pin minimizes ground-loop noise. Place a 100 nF bypass capacitor at each AVdd pin if used.
Thông tin tuân thủ
RoHS and REACH compliant per Microchip product page. Industrial temperature grade (-40 °C to +85 °C). Not AEC-Q100 qualified - use automotive-grade PIC18F variants for vehicle applications.
