PIC18LF26K22-I/SS - 8-bit XLP MCU, 64KB Flash, 28-SSOP | Microchip
MPN: PIC18LF26K22-I/SS ✓ Hoạt độngPIC18LF26K22-I/SS Tóm tắt
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program and data memory, peripherals, and I/O into one package. The PIC18 family uses Microchip's enhanced 8-bit RISC architecture with hardware multiplier and C-friendly design. Within the broader taxonomy, the PIC18LF26K22 sits as: microcontroller -> 8-bit MCU -> PIC18 family -> PIC18 "K22" sub-family -> PIC18LF26K22 (low-voltage, 28-pin, 64KB Flash). It is the foundation of millions of embedded products in consumer, industrial, and automotive-grade (with Q-graded parts) applications.
Key differentiating features of the PIC18LF26K22 include the nanoWatt XLP technology with deep-sleep current in the nanoamp range, integrated mTouch capacitive sensing peripherals, two Enhanced USART modules, two MSSP (SPI/I2C) ports, two CCP/ECCP modules, a 12-channel 10-bit ADC, and four 8-bit timers plus five 16-bit timers. The CTMU peripheral enables capacitive touch and time measurement without external components. The on-chip 64MHz internal oscillator reduces BOM by eliminating an external crystal in many designs.
Typical applications include low-power battery sensor nodes, USB HID peripherals (when paired with the F-variant's USB module), home appliances, motor-control BLDC/PMSM drivers using ECCP, capacitive touch keypads with mTouch, and industrial IoT edge nodes. The wide operating voltage (1.8V-3.3V typical, 3.6V max) lets a single part cover 2xAA, Li-ion, and 3.3V regulated rails.
A key design consideration: at 64MHz and 3.3V the core draws ~10mA (typical), so coin-cell designs must use nanoWatt XLP sleep modes (down to ~20nA). For multi-rail systems, the brown-out reset (BOR) and PWRT timers should be enabled to ensure deterministic startup. The I/SS package is the industrial (-40C to +85C) temperature grade with SSOP-28 footprint.
Bộ thay thế dễ dàng lắp đặt cho PIC18LF26K22-I/SS — 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 PIC18LF26K22-I/SS (cùng hình factor và footprint) — khác nhau ở Operating Temperature, ADC, Package, Core Architecture, Supply Voltage (VDD).
PIC18LF25K22-I/SS
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC18F26K22-I/SS
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F26K22-I/SO
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC18LF26K22-I/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18LF26K22-E/SS
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18LF26K42-I/SS
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18LF26K22-I/SS Tỷ lệ tối đa & tính chất điện
| Architecture | PIC18 8-bit RISC enhanced |
| CPU Core | 8-bit PIC18 |
| Program Memory (Flash) | 64 KB (32K x 16) |
| RAM | 3968 bytes |
| EEPROM | 1024 bytes |
| Maximum CPU Speed | 64 MHz (16 MIPS) |
| Supply Voltage (VDD) | 1.8 V to 3.6 V |
| I/O Pins | 24 |
| ADC | 10-bit, 19 channels |
| Comparators | 2 |
| Timers (8/16-bit) | 4 x 8-bit, 5 x 16-bit |
| CCP/ECCP | 2 CCP, 1 ECCP |
| UART | 2 Enhanced USART |
| SPI / I2C | 2 MSSP (SPI/I2C) |
| Hộp | 28-pin SSOP (I/SS), 5.30 mm body |
| Kiểu lắp đặt | Surface Mount |
| Nhiệt độ hoạt động | -40C to +85C (Industrial) |
| Low-Power Technology | nanoWatt XLP |
| Cấp MSL | 1 (unlimited) |
| Trạng thái RoHS | Compliant |
Cấu hình chân PIC18LF26K22-I/SS
| Chân 1 | RA3/MCLR — Digital I/O / Master Clear (reset) input |
| Chân 2 | RA4/AN4 — Digital I/O / Analog input 4 |
| Chân 3 | RA5/AN5 — Digital I/O / Analog input 5 |
| Chân 4 | RA6 — Digital I/O |
| Chân 5 | RA7 — Digital I/O / Oscillator output |
| Chân 6 | VSS — Ground reference |
| Chân 7 | RA0/AN0 — Digital I/O / Analog input 0 |
| Chân 8 | RA1/AN1 — Digital I/O / Analog input 1 |
| Chân 9 | RA2/AN2 — Digital I/O / Analog input 2 |
| Chân 10 | RB0/AN12 — Digital I/O / Analog input 12 / Interrupt-on-change |
| Chân 11 | RB1/AN10 — Digital I/O / Analog input 10 |
| Chân 12 | RB2/AN8 — Digital I/O / Analog input 8 |
| Chân 13 | RB3/AN9 — Digital I/O / Analog input 9 |
| Chân 14 | RB4/AN11 — Digital I/O / Analog input 11 |
| Chân 15 | RB5/AN13 — Digital I/O / Analog input 13 |
| Chân 16 | RB6/PGC — Digital I/O / ICSP clock |
| Chân 17 | RB7/PGD — Digital I/O / ICSP data |
| Chân 18 | VSS — Ground reference (second pad) |
| Chân 19 | VDD — Positive supply voltage |
| Chân 20 | RA5 — Digital I/O (alternate pin 5 function) |
| Chân 21 | RC0 — Digital I/O / PWM / USART |
| Chân 22 | RC1 — Digital I/O / PWM / USART |
| Chân 23 | RC2 — Digital I/O / PWM / MSSP |
| Chân 24 | RC3 — Digital I/O / PWM / MSSP |
| Chân 25 | RC4 — Digital I/O / MSSP |
| Chân 26 | RC5 — Digital I/O / MSSP |
| Chân 27 | RC6 — Digital I/O / USART TX |
| Chân 28 | RC7 — Digital I/O / USART RX |
Ứng dụng tiêu biểu
PIC18LF26K22-I/SS phù hợp cho 7 Áp dụngs: Battery-Powered Wireless Sensor Node, Capacitive Touch Keypad (mTouch), BLDC / PMSM Motor Controller, USB HID Peripheral (F-Variant Pair), Industrial Control / Modbus RTU Slave, Home Appliance User Interface Board, IoT Edge Sensor / Data Logger.
Battery-Powered Wireless Sensor Node
The PIC18LF26K22-I/SS is well-suited to battery-powered wireless sensor nodes thanks to its nanoWatt XLP technology, which delivers deep-sleep currents as low as ~20 nA with RAM retention. The 1.8-3.6V VDD range covers two AA cells, a single CR2032 coin cell (with boost), or a Li-ion pack directly. The 64KB Flash holds Zigbee/BLE stack + application code, while the 3.9KB SRAM accommodates 802.15.4 frame buffers and sensor sample arrays. The integrated 10-bit ADC and CTMU interface directly with temperature, humidity, and capacitive-touch sensors without external components, lowering BOM cost.
Được đề xuất
Capacitive Touch Keypad (mTouch)
The PIC18LF26K22-I/SS integrates the CTMU (Charge Time Measurement Unit) peripheral that enables Microchip's mTouch capacitive sensing without any external touch IC. Designers can implement up to 19 touch electrodes using the CTMU + ADC combination, sufficient for 4x4 keypads plus slider/wheel channels. The nanoWatt XLP idle mode keeps standby power under 1uA for battery-backed control panels. The 64KB Flash supports custom gesture recognition firmware, while 3.9KB RAM holds debounce and key-state buffers.
Được đề xuất
BLDC / PMSM Motor Controller
The PIC18LF26K22-I/SS drives small BLDC and PMSM motors via its Enhanced CCP (ECCP) module, which supports center-aligned PWM, complementary outputs with programmable dead-band, and hardware fault shutdown. The 64 MHz / 16 MIPS core executes FOC and sensorless back-EMF algorithms at 32 kHz PWM rates with margin to spare. The 5 timer modules (4x8-bit, 1x16-bit) capture Hall-sensor or quadrature encoder feedback. The 1.8-3.6V supply range and small SSOP-28 footprint fit tight motor-driver boards for fans, pumps, and small appliances up to ~100 W.
Được đề xuất
USB HID Peripheral (F-Variant Pair)
The PIC18LF26K22-I/SS acts as the low-power application coprocessor in designs where the PIC18F26K22-I/SS handles USB 2.0 full-speed enumeration and HID class protocols. The LF part runs the user-interface state machine in nanoWatt XLP sleep between USB events, dropping system power by 90% when the bus is idle. The shared SSOP-28 footprint enables a single PCB to accept either part via stuffing option, giving designers flexibility between USB-enabled (F) and pure sensor (LF) variants.
Được đề xuất
Industrial Control / Modbus RTU Slave
The PIC18LF26K22-I/SS runs Modbus RTU slave firmware over its Enhanced USART at RS-485 baud rates up to 115.2 kbps with hardware CRC-16 support. The wide -40C to +85C industrial temperature grade handles factory-floor environments, while the 64KB Flash stores complete Modbus map, calibration tables, and event logs in EEPROM. The 12-bit-equivalent ADC accuracy (with oversampling) reads 4-20 mA loop sensors directly via a 250-ohm shunt. NanoWatt XLP modes let battery-backed remote terminals ride out power glitches gracefully.
Được đề xuất
Home Appliance User Interface Board
The PIC18LF26K22-I/SS drives user-interface boards in washing machines, dishwashers, ovens, and HVAC controls thanks to its mix of mTouch capacitive keys, LED-driving CCP/PWM outputs, and UART link to the main appliance MCU. The 64KB Flash holds multilingual menu strings, fault-code libraries, and IoT-ready upgrade bootloaders. The industrial -40C to +85C rating covers appliance interior temperatures, and the SSOP-28 footprint is easy to hand-solder during prototyping.
Được đề xuất
IoT Edge Sensor / Data Logger
The PIC18LF26K22-I/SS records sensor data to its 1KB on-chip EEPROM (10-year retention) or to an external SPI Flash via MSSP, waking only on a timer interrupt or external event. The nanoWatt XLP deep-sleep mode keeps idle current below 50 nA, enabling multi-year battery life on a single 2400 mAh Li-ion cell when sampling once per minute. The two MSSP ports allow simultaneous SPI Flash storage and I2C sensor interfacing (e.g., SHT30 humidity). The 64KB Flash is sufficient for TinyML inference or complex signal-processing front-ends.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC18LF26K22-I/SS — 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 | PIC18LF25K22-I/SS | PIC18F26K22-I/SS | PIC18LF26K42-I/SS |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-pin SSOP (I/SS) | 28-pin SSOP - same | 28-pin SSOP - same | 28-pin SSOP - same |
| Flash Memory | 64 KB | 32 KB | 64 KB | 64 KB |
| RAM | 3968 B | 2048 B | 3968 B | 4096 B |
| Max CPU Speed | 64 MHz / 16 MIPS | 64 MHz / 16 MIPS | 64 MHz / 16 MIPS | 64 MHz / 16 MIPS |
| VDD Range | 1.8V - 3.6V (LF) | 1.8V - 3.6V | 1.8V - 5.5V (F) | 1.8V - 3.6V |
| USB 2.0 | No | No | Yes | No |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C | -40C to +85C | -40C to +85C |
| Price (qty 1, USD) | $4.38 | $3.20 (typical) | $4.50 (typical) | $3.80 (typical) |
Bảo phân biệt quan trọng
- Highest-density 64KB Flash PIC18 SSOP-28 option in the LF family (vsPIC18LF25K22-I/SS)
- Lower-voltage operation protects battery cells (vsPIC18F26K22-I/SS)
- Mature, well-documented K22 core with extensive library support (vsPIC18LF26K42-I/SS)
Ghi chú thiết kế
Estimated: at 64 MHz / 3.3 V the PIC18LF26K22-I/SS core consumes ~10 mA (typical from datasheet DS39976). In nanoWatt XLP deep-sleep with RTCC running, current drops to ~20-100 nA. For two-AA battery designs (3000 mAh), average current must stay under 500 uA to achieve 6-month battery life. Disable all unused peripherals in firmware via PMDx registers and configure unused pins as outputs low to minimize pin-leakage.
Place decoupling capacitors (100 nF ceramic + 10 uF bulk) within 5 mm of VDD (pin 19) and VSS (pin 18). The SSOP-28 footprint accepts a 0.65 mm pitch land pattern; ensure the MCLR pin has its own 10 kohm pull-up to VDD and a 100 nF decoupling cap to ground for noise-free resets. Keep analog traces (RA0-RA5, RBx-ANxx) short and routed away from PWM/USART switching signals to preserve ADC accuracy.
The ICSP pins (RB6/PGC, RB7/PGD) double as in-circuit programming and debugging lines; do not place series resistors larger than 100 ohm on these pins or programming may fail. Route MCLR separately from analog inputs. For mTouch designs, use a ground-fill keepout under touch electrodes per Microchip AN1258 to maximize sensitivity. The 28-pin SSOP body is 5.30 mm wide with 0.65 mm lead pitch - allocate PCB keepout accordingly.
Do not assume the LF (1.8-3.6V) variant can operate at 5V - exceeding 3.6V VDD will damage EEPROM and stress the silicon. Brown-out Reset (BOR) must be enabled for deterministic startup; without it, the part may execute code at indeterminate VDD levels and corrupt EEPROM. The internal 64 MHz oscillator is factory-trimmed but may need user calibration over temperature for UART timing-critical applications.
Thông tin tuân thủ
RoHS and REACH compliant per Microchip product page. The I/SS industrial grade is NOT AEC-Q100 qualified; for automotive, use the PIC18F26K22-E/SS extended grade or a Q-graded variant.
