PIC18LF26K40-E/SP - 8-Bit 64MHz XLP MCU 64KB Flash | Microchip
MPN： PIC18LF26K40-E/SP ✓ 啟用中PIC18LF26K40-E/SP 概覽
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, RAM, non-volatile program memory, and peripherals onto one silicon die; the PIC18 architecture sits within Microchip's hierarchy of 8-bit microcontrollers (PIC10/12/16/18) -> RISC MCU -> microcontroller -> embedded processor -> semiconductor. The "LF" prefix denotes the extended low-power (XLP) family, optimized for battery-operated and energy-harvesting designs where quiescent current in nanoampere ranges is mandatory.
The device operates from 1.8 V to 3.6 V (LF variant) and supports up to 16 MIPS at 64 MHz. It features Core Independent Peripherals (CIPs) such as the Complementary Waveform Generator (CWG), Windowed Watchdog Timer (WWDT), and Cyclic Redundancy Check with Memory Scan (CRC/SCAN) that offload tasks from the CPU and improve deterministic real-time response. The 10-bit ADC2 includes hardware accumulation, averaging, threshold detection, and automatic channel scanning, reducing firmware overhead for sensor-array applications.
Typical applications include IoT sensor nodes, battery-powered instrumentation, home automation controllers, low-power wireless sensor platforms, and consumer appliances. The integrated ZCD, CWG, and analog peripherals make it well suited for SMPS control loops and motor/lighting control where deterministic hardware response is required.
Designers should review the device's power-budget calculator and clock-tree configuration in MPLAB X IDE to balance active current, sleep current, and wake-up latency. The 28-pin SPDIP footprint supports breadboard and through-hole prototyping, while surface-mount variants (SOIC/SSOP/QFN/ML) of the same die are available for production reflow assembly.
This page synthesizes distributor pricing, drop-in same-family alternatives from Microchip, and practical design notes that supplement - but do not replace - the manufacturer datasheet and the MPLAB XC8 compiler documentation.
直接替換替代品，適用於 PIC18LF26K40-E/SP — 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： PIC18LF26K40-E/SP （相同外形與佔位） — 差異在於 ADC, Package, Comparators, Program Memory (Flash), I/O Pins.
PIC18F26K40-E/SP
✅ 直接替換📋 參考替代品（不在目錄中）
PIC18LF25K40-E/SP
✅ 直接替換聯絡詢價
查看資料表 →PIC18LF26K40-E/SP 最大額定值與電氣特性
| Core | PIC18 8-bit RISC |
| Program Memory (Flash) | 64 KB (32K x 16) |
| Data RAM | 4 KB |
| Data EEPROM | 256 bytes |
| Maximum CPU Speed | 64 MHz (16 MIPS) |
| Operating Voltage Range | 1.8 V to 3.6 V |
| ADC | 10-bit ADC2 with Computation |
| DAC | 5-bit DAC |
| Comparators | Yes |
| PWM Channels | Multiple (PWM/CCP/CWG) |
| Timers | Multiple 8/16-bit with WWDT |
| CRC/SCAN Engine | Yes |
| Zero-Cross Detection (ZCD) | Yes |
| HLT Peripheral | Yes |
| 封裝 | 28-pin SPDIP (0.300", 7.62 mm) |
| 安裝類型 | Through-Hole |
| 工作溫度範圍 | -40C to +125C (Extended) |
| RoHS 狀態 | Compliant |
PIC18LF26K40-E/SP 腳位配置
| 腳位 1 | MCLR/RE3 — Master Clear (reset) input or digital I/O RE3 |
| 腳位 2 | RA0 — PORTA bit 0 / analog input / IOC |
| 腳位 3 | RA1 — PORTA bit 1 / analog input / IOC |
| 腳位 4 | RA2 — PORTA bit 2 / analog input / DAC output / IOC |
| 腳位 5 | RA3 — PORTA bit 3 / analog input / IOC |
| 腳位 6 | RA4 — PORTA bit 4 / analog input / IOC |
| 腳位 7 | RA5 — PORTA bit 5 / analog input / IOC |
| 腳位 8 | VSS — Ground reference |
| 腳位 9 | RA7 — PORTA bit 7 / analog input / IOC |
| 腳位 10 | RA6 — PORTA bit 6 / analog input / IOC |
| 腳位 11 | RC0 — PORTC bit 0 / analog input / IOC |
| 腳位 12 | RC1 — PORTC bit 1 / analog input / IOC |
| 腳位 13 | RC2 — PORTC bit 2 / analog input / IOC |
| 腳位 14 | RC3 — PORTC bit 3 / analog input / IOC |
| 腳位 15 | RC4 — PORTC bit 4 / analog input / IOC |
| 腳位 16 | RC5 — PORTC bit 5 / analog input / IOC |
| 腳位 17 | RC6 — PORTC bit 6 / analog input / IOC |
| 腳位 18 | RC7 — PORTC bit 7 / analog input / IOC |
| 腳位 19 | VSS — Ground reference |
| 腳位 20 | VDD — Positive supply voltage |
| 腳位 21 | RB0 — PORTB bit 0 / analog input / IOC / interrupt-on-change |
| 腳位 22 | RB1 — PORTB bit 1 / analog input / IOC |
| 腳位 23 | RB2 — PORTB bit 2 / analog input / IOC |
| 腳位 24 | RB3 — PORTB bit 3 / analog input / IOC |
| 腳位 25 | RB4 — PORTB bit 4 / analog input / IOC |
| 腳位 26 | RB5 — PORTB bit 5 / analog input / IOC / ICP |
| 腳位 27 | RB6 — PORTB bit 6 / analog input / IOC / PGC |
| 腳位 28 | RB7 — PORTB bit 7 / analog input / IOC / PGD |
典型應用
PIC18LF26K40-E/SP 適用於 6 應用s: Battery-Powered IoT Sensor Node, Switched-Mode Power Supply (SMPS) Controller, Industrial Sensor Transmitter (4-20 mA), Home Automation / Smart Home Controller, Consumer Appliance Control Board, Portable Medical Monitoring Device.
Battery-Powered IoT Sensor Node
The PIC18LF26K40-E/SP is ideal for battery-powered IoT sensor nodes operating from a CR2032 or 2xAA battery in the 1.8 V to 3.6 V range. Its nanoamp-range sleep current and fast wake-up via WWDT minimize idle energy, while the 64 KB Flash comfortably fits LoRaWAN or BLE MCU host stacks. The 10-bit ADC2 with hardware averaging handles thermistor, photocell, or soil-moisture sensing without CPU intervention. Compared with 32-bit MCUs, the PIC18LF26K40 draws roughly 1/10 the deep-sleep current while delivering deterministic CIP-based sensor processing.
推薦
Switched-Mode Power Supply (SMPS) Controller
The integrated Complementary Waveform Generator (CWG), Zero-Cross Detection (ZCD), and high-speed comparators make the PIC18LF26K40-E/SP well suited as a digital SMPS controller. The CWG drives synchronous rectifier FETs with programmable dead-band, while the comparator-based peak-current-mode control loop closes in hardware for sub-microsecond response. The 64 MHz CPU and 10-bit ADC2 with computation support closed-loop voltage-mode or current-mode control of buck/boost topologies in LED drivers, battery chargers, and isolated DC-DC converters up to several hundred kHz.
推薦
Industrial Sensor Transmitter (4-20 mA)
The 28-SPDIP through-hole footprint and -40C to +125C extended temperature range suit the PIC18LF26K40-E/SP for industrial 4-20 mA sensor transmitters and process-control front ends. The XLP current profile (sub-uA sleep) and 10-bit ADC2 with hardware oversampling enable battery-backed loop-powered transmitters with multi-year battery life. The integrated comparators and ZCD support HART modem signaling or AC line-voltage zero-cross timing in smart-meter and motor-protection applications.
推薦
Home Automation / Smart Home Controller
For home-automation hubs, the PIC18LF26K40-E/SP balances cost, peripheral richness, and deterministic response. Its 64 KB Flash and 4 KB RAM fit Zigbee/BLE-MCU host bridging, keypad scanning, and PWM-driven LED dimming. Multiple PWM/CCP/CWG channels enable precise dimming and RGBW color-mixing for connected lighting fixtures, while the CRC/SCAN engine ensures non-intrusive background memory integrity checking for IEC 60730 class-B safety compliance. ZCD enables AC-line synchronization for TRIAC dimming without external components.
推薦
Consumer Appliance Control Board
White-goods control boards (washing machines, dishwashers, coffee machines) benefit from the PIC18LF26K40-E/SP's mix of 28-SPDIP through-hole assembly (easy field-repair) and rich peripheral set. The CWG drives TRIAC gates for AC load control, the comparators sense water level or motor overcurrent, and the WWDT provides functional-safety supervision. The 1.8 V to 3.6 V supply rail simplifies power-tree design and supports direct Li-ion battery backup for clock RTC retention during power-loss events.
推薦
Portable Medical Monitoring Device
The PIC18LF26K40-E/SP serves portable medical monitoring devices such as pulse oximeters, glucose meters, and handheld spirometers, where its XLP nanoamp sleep and deterministic CIP-based signal processing minimize battery load. The 10-bit ADC2 with oversampling handles pulse-oximetry photodiode current measurements; the 5-bit DAC drives LED bias currents. Compared with 32-bit Cortex-M0+ parts at the same price point, the PIC18LF26K40-E/SP offers lower sleep current and a more deterministic interrupt response critical for medical IEC 60601-1-8 alarm timing.
推薦
推薦產品摘要
工程參考資料，適用於 PIC18LF26K40-E/SP — 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 | PIC18F26K40-E/SP | PIC18LF25K40-E/SP | PIC18LF26K40-E/MV |
|---|---|---|---|---|
| Package | 28-SPDIP (0.300") | 28-SPDIP - same footprint | 28-SPDIP - same footprint | 28-UQFN - different package |
| Brand | Microchip Technology | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same |
| Flash Memory | 64 KB | 64 KB - same | 32 KB (-50%) | 64 KB - same |
| Data RAM | 4 KB | 4 KB - same | 2 KB (-50%) | 4 KB - same |
| Operating Voltage | 1.8 V to 3.6 V (LF) | 2.3 V to 5.5 V (F) | 1.8 V to 3.6 V (LF) - same | 1.8 V to 3.6 V (LF) - same |
| CPU Speed | 64 MHz / 16 MIPS | 64 MHz / 16 MIPS - same | 64 MHz / 16 MIPS - same | 64 MHz / 16 MIPS - same |
| EEPROM | 256 B | 256 B - same | 256 B - same | 256 B - same |
| Pin Count | 28 | 28 - same | 28 - same | 28 - same |
| RoHS Compliance | Yes | Yes - same | Yes - same | Yes - same |
主要差異化特點
- XLP nanoamp sleep current extends battery life 5-10x vs standard PIC18F parts (對比PIC18F26K40-E/SP)
- 64 KB Flash / 4 KB RAM doubles the memory of the lower-cost 25-series (對比PIC18LF25K40-E/SP)
- Through-hole SPDIP for breadboard/prototyping and field-repairable designs (對比PIC18LF26K40-E/MV (QFN))
- Core Independent Peripherals (CWG/WWDT/CRC-SCANT) reduce CPU load (對比Generic 8-bit MCUs without CIP)
設計說明
Estimated: at VDD=3.3V, FOSC=64MHz active mode, the PIC18LF26K40-E/SP draws approximately 8-10 mA active (per Microchip DC characteristics). For sleep modes, the XLP variant achieves sub-1 uA typical with RTC and WWDT running. Use MPLAB X IDE's Power Budget Calculator to optimize active vs. sleep ratios; for battery life estimation, sum (Iactive x tactive) + (Isleep x tsleep) and divide by battery capacity with derating.
Place a 100 nF decoupling capacitor as close as possible to the VDD pin (pin 20) with short traces to the nearest VSS (pin 19). For high-frequency noise suppression, add a 10 uF bulk capacitor on the VDD rail near the MCU. The AVDD/AVSS pins (if used for ADC reference) require separate low-noise filtering: 10 ohm ferrite + 100 nF + 10 uF pi-filter. Keep analog and digital ground returns separate and join only at the MCU's VSS pin to avoid digital switching noise coupling into ADC readings.
Do not apply voltages above VDD+0.3V to any digital I/O pin - the PIC18LF26K40 is NOT 5V tolerant on I/O. When migrating from a 5V system, use level shifters (e.g., TXB0108) for inter-MCU communications. The MCLR pin requires a 10 kohm pull-up to VDD; without it, the device may enter unpredictable reset states. The ICSP programming pins PGC/PGD (RB6/RB7) must not be strapped low at reset or the MCU enters programming mode unexpectedly.
Keep the 28-SPDIP through-hole footprint on a standard 2.54 mm pitch DIP land pattern for breadboard compatibility. For dual-footprint designs that also accept SMD variants, route a 'SPDIP-to-SOIC adapter' pattern using 0.300" SPDIP pads extended to allow either package. The exposed pad on QFN variants (when migrating to /MV package) MUST be soldered to a ground copper pour with multiple thermal vias to meet theta_JA datasheet values.
合規資訊
RoHS and REACH compliant per Microchip product documentation. Not AEC-Q100 qualified - choose automotive-grade PIC18F variants with /VAO suffix for automotive applications. Standard PIC18LF26K40-E/SP is suitable for industrial and consumer designs.
