PIC18LF26K40-E/SS - 64KB Flash XLP 8-bit MCU, SSOP-28 | Microchip
料号： PIC18LF26K40-E/SS ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $2.95 | $2.95 |
| 10 | $2.62 | $26.20 |
| 100 | $2.31 | $231.00 |
| 500 | $2.05 | $1,025.00 |
| 1,000 | $1.85 | $1,850.00 |
| 3,000 | $1.62 | $4,860.00 |
PIC18LF26K40-E/SS 概述
An 8-bit microcontroller (MCU) is a single-chip processor with an 8-bit data bus width, internal program memory, RAM, and integrated peripherals like ADC, timers, and communication interfaces. Within the MCU taxonomy, the PIC18LF26K40 belongs to the PIC18 family -> 8-bit PIC microcontrollers -> microcontrollers -> microcontrollers and processors -> semiconductor ICs, positioning it for general-purpose embedded control rather than high-performance DSP workloads.
Key differentiating features include nanoWatt XLP technology for sub-µA sleep currents that extend battery life, eXtreme Low-Power (XLP) modes with typical <100 nA sleep draw, PPS for remapping digital peripherals to nearly any I/O pin (reducing PCB layout constraints), and Core Independent Peripherals (CIPs) such as CWG and WWDT that operate without CPU intervention. The 'LF' prefix denotes the low-voltage (1.8V-3.6V) variant designed for battery-powered and energy-harvesting systems.
Architecturally, the device uses a 16-bit instruction word with an 8-bit data path, hardware multiply, and a vectored interrupt controller supporting prioritized interrupts. The integrated high-frequency oscillator and PLL eliminate external crystals for many timing needs, while the IDLE/DOZE/PMD power-management modes let developers trade peripheral activity against current draw at runtime.
Typical applications include IoT sensor nodes, battery-powered remote controls, low-end consumer electronics, industrial sensor interfaces, and automotive body controllers. Designers select this MCU when they need generous Flash/RAM, robust I/O count, and proven low-power PIC18 toolchain support.
Design consideration: leverage PPS to remap EUSART/SPI/I2C to any available pin, simplifying PCB routing; always place the ICSPDAT/ICSCLK pins to accessible test points for in-circuit programming and debugging.
This page consolidates distributor pricing tiers (as of 2026-09-28), verified drop-in alternatives (same SSOP-28 package), and practical design notes synthesized from Microchip datasheets not commonly seen on distributor listings.
直接替换替代料： PIC18LF26K40-E/SS ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： PIC18LF26K40-E/SS （相同外形与封装尺寸） ——差异在于 ADC, Package, Comparators, Program Memory (Flash), Core Architecture.
快速对比工具——选择替代料号进行并排对比：
PIC18F26K40-E/SS
✅ 直接替换✓ 有现货
$1.65 / 个
查看数据手册 →PIC18F26K40-I/SS
✅ 直接替换✓ 有现货
$1.32 / 个
查看数据手册 →PIC18F26K40T-I/SS
✅ 直接替换✓ 有现货
$1.94 / 个
查看数据手册 →PIC18LF26K40-I/SS
✅ 直接替换✓ 有现货
$1.18 / 个
查看数据手册 →PIC18F46K40-E/SS
✅ 直接替换📋 参考替代料（不在目录中）
PIC18F26K40-E/SP
✅ 直接替换📋 参考替代料（不在目录中）
PIC18LF26K40-E/SS 最大额定值与电气特性
| Core Architecture | PIC18 enhanced mid-range 8-bit |
| Program Memory (Flash) | 64 KB (32K x 16 words) |
| Data Memory (SRAM) | 4 KB |
| EEPROM | 256 bytes |
| Maximum CPU Speed | 64 MHz |
| Operating Voltage Range | 1.8 V to 3.6 V |
| I/O Pins | Up to 25 (varies by package) |
| ADC | 10-bit ADC2 (computation) |
| DAC | 5-bit DAC |
| 封装 | 28-SSOP (5.30 mm body, 0.65 mm pitch) |
| 安装类型 | Surface Mount |
| Comparators | Yes |
| Timers | Multiple 8/16-bit with WWDT |
| Communication Interfaces | EUSART, SPI, I2C |
| Peripheral Pin Select (PPS) | Yes |
| XLP (nanoWatt) Sleep Current | Sub-microampere typical |
| Core Independent Peripherals (CIP) | CWG, WWDT, CRC/SCAN, ZCD, CLC |
| 工作温度范围 | -40C to +125C (E suffix) |
| RoHS 状态 | Compliant |
| Lead-Free / Halogen-Free | Yes / Yes |
| MSL 等级 | MSL1 per JEDEC J-STD-020 |
PIC18LF26K40-E/SS 引脚配置
| 引脚 1 | RA3/AN3/VREF+/T0CKI/PGM/CCP3 — Digital I/O, analog channel 3, Vref+, Timer0 clock input, ICSP PGM, CCP3 output |
| 引脚 2 | RA2/AN2/C1INA/CTED1 — Digital I/O, analog input, comparator input, CTMU edge |
| 引脚 3 | RA1/AN1/C1INB-/ICSPCLK — Digital I/O, analog input, comparator input, ICSP clock |
| 引脚 4 | RA0/AN0/C1INA+/ICSPDAT — Digital I/O, analog input, comparator input, ICSP data |
| 引脚 5 | RA5/AN4/CCP2/SS1/T1CKI — Digital I/O, analog input, CCP2 input, SPI slave select, Timer1 clock |
| 引脚 6 | RA4/T1G/AN5/C2OUT — Digital I/O, Timer1 gate, analog input, comparator output |
| 引脚 7 | VDD — Positive supply voltage (1.8V-3.6V) |
| 引脚 8 | VSS — Ground reference |
| 引脚 9 | OSC2/CLKOUT/RA6 — Crystal/clock output or digital I/O |
| 引脚 10 | OSC1/CLKIN/RA7 — Crystal/clock input or digital I/O |
| 引脚 11 | RC7/RX/DT1/CCP4 — Digital I/O, EUSART RX, CCP4 |
| 引脚 12 | RC6/TX/CK1/CCP3 — Digital I/O, EUSART TX, CCP3 |
| 引脚 13 | RC5/SDO1/C2OUT/CCP2 — Digital I/O, SPI MOSI, comparator output, CCP2 |
| 引脚 14 | RC4/SDI1/SDA1 — Digital I/O, SPI MISO, I2C data |
| 引脚 15 | RC3/SCL1/SCK1 — Digital I/O, I2C clock, SPI clock |
| 引脚 16 | RC2/CCP1/P1A/AN6 — Digital I/O, CCP1 output, PWM, analog input |
| 引脚 17 | RC1/CCP2/AN7 — Digital I/O, CCP2 output, analog input |
| 引脚 18 | RC0/AN8 — Digital I/O, analog input |
| 引脚 19 | RB7/INT2/AN14 — Digital I/O, external interrupt, analog input |
| 引脚 20 | RB6/INT1/AN13 — Digital I/O, external interrupt, analog input |
| 引脚 21 | RB5/INT0/AN12 — Digital I/O, external interrupt, analog input |
| 引脚 22 | RB4/AN11 — Digital I/O, analog input |
| 引脚 23 | RB3/AN9/CCP5 — Digital I/O, analog input, CCP5 |
| 引脚 24 | RB2/AN8/C1IND/INT2 — Digital I/O, analog input, comparator input, external interrupt |
| 引脚 25 | RB1/AN10/C1INC — Digital I/O, analog input, comparator input |
| 引脚 26 | RB0/AN12/INT0/FLT0 — Digital I/O, analog input, external interrupt, PWM fault |
| 引脚 27 | RE3/MCLR/VPP — Master clear (reset), ICSP programming voltage |
| 引脚 28 | RD7 — Digital I/O (Port D, bit 7) |
典型应用
PIC18LF26K40-E/SS 适用于 7 应用s: Battery-Powered IoT Sensor Node, Industrial Sensor Interface, Consumer Remote Control, Automotive Body Control Module, Medical Sensor / Health Monitor, Lighting / LED Color Controller, Low-Power Communication Gateway.
Battery-Powered IoT Sensor Node
The PIC18LF26K40-E/SS is engineered for low-duty-cycle IoT sensor nodes powered by primary lithium cells or coin-cell batteries. Its 1.8V-3.6V operating range spans a single-coin-cell battery's full discharge curve, while nanoWatt XLP technology delivers typical sleep current under 1 µA with full RAM retention. The integrated 10-bit ADC2 (computation) digitizes temperature, humidity, or analog sensors with hardware accumulation and threshold detection, offloading work from the CPU so the core can stay asleep longer. Peripheral pin select (PPS) lets designers route UART or I2C sensors to any free I/O, simplifying PCB layout when sensor placement requires signal integrity care. Compared to switching regulators, an LDO supplied the rail here without switching noise, and the MCU's 4KB SRAM buffers moderate packet sizes from LoRa or BLE co-processors. Estimated battery life: 5+ years on a 2400 mAh Li-coin with hourly wake/sense/transmit cycles.
推荐
Industrial Sensor Interface
The PIC18LF26K40-E/SS serves as a flexible industrial sensor conditioner, with 25 I/O available in the 28-SSOP footprint and Core Independent Peripherals (CIPs) executing time-critical tasks without CPU load. The comparators and zero-cross detect (ZCD) modules sense AC line timing for TRIAC-based heater control, while the configurable logic cells (CLC) build logic gates between peripherals on the fly. EUSART plus SPI/I2C enable simultaneous connection to a host PLC and remote sensor chains. The -40C to +125C industrial operating range ('E' suffix) is rated for outdoor cabinet and factory-floor environments. For EMI robustness, the datasheet recommends ferrite beads on the supply and bypassing the analog VDD pin with a separate 100 nF ceramic next to the IC. This MCU pair with TLx4971 current-sense ICs implements a complete motor-monitoring node in less than 1 square inch of PCB.
推荐
Consumer Remote Control
Universal remote controls and TV/STB handsets benefit from the PIC18LF26K40-E/SS's low sleep current (under 1 µA), its 64KB Flash (sufficient for IR/RF protocol databases), and its 16 KB of total Flash headroom for multi-protocol support. Peripheral pin select simplifies the PCB when IR receivers, LEDs, and key matrices share pins on a crowded 4-layer board. The complementary waveform generator (CWG) and 16-bit PWM modules drive IR LEDs with carrier-precision timing, while the WWDT ensures accidental code lockups reset cleanly. Designers typically pair this PIC with an IR receiver module and a 32.768 kHz crystal to drive low-power RTC tasks; an AAA alkaline pair runs the design for 2+ years in standby. The supplied I2C channel can drive an OLED status display alongside the main UI microcontroller.
推荐
Automotive Body Control Module
Within automotive body controllers, the PIC18LF26K40-E/SS is commonly paired with LIN/CAN transceivers to handle lighting, wiper, mirror, and lock actuators. The 'F26K40 (5V) variant' is preferred where the bus is 12V-24V-tolerant via external regulators, and PIC18LF26K40-E/SS handles sub-modules requiring direct 3.3V battery sensing. Its 25 I/O pins are routed via PPS to match the harness connector pinout without costly board reroutes, and the CWG module generates precise LIN-controlled PWM for LED dimming. AEC-Q100 not qualified per the standard part, but PIC18F26K40 family equivalents are designed for automotive-grade sourcing. CRC/SCAN peripherals continuously check Flash integrity in the field, providing functional-safety assurance for tier-2 OEMs.
推荐
Medical Sensor / Health Monitor
Portable medical accessories like pulse oximeters, pill dispensers, and glucose-meter peripherals adopt the PIC18LF26K40-E/SS for its low power and reliable 10-bit ADC2 precision. Sleep currents below 1 µA extend device shelf life, while the full 4KB SRAM and 64KB Flash accommodate small RTOS or bare-metal firmware with secure bootloaders. The 256-byte EEPROM provides nonvolatile storage for calibration constants and patient log retention. Designers often pair this MCU with an OLED display, a temperature sensor, and a coin-cell LDO. Note: for FDA-registered medical Class II/III devices, more rigorous qualification is required, but for OTC health/wellness gadgets this part is widely deployed. The 1.8V minimum VDD permits operation from single AA alkaline at end of life.
推荐
Lighting / LED Color Controller
The PIC18LF26K40-E/SS is well matched to LED lighting controllers running at low DC bus voltages. Its 16-bit PWM with up to 10-bit resolution and 64 MHz system clock is enough to drive a 12-channel RGBW strip with 1000-step dimming resolution at 1 kHz refresh. The complementary waveform generator (CWG) and zero-cross detect (ZCD) minimize switching losses in TRIAC dimmer replacements. I2C control surfaces like DALI and Bluetooth Mesh supported via co-processors such as RN4871, with the PIC serving as local intelligence and LED driver. Designers should place ferrite beads on the analog supply to prevent PWM noise coupling back into the ADC reading the ambient light sensor.
推荐
Low-Power Communication Gateway
The PIC18LF26K40-E/SS functions as a low-cost bridge between sub-GHz radios and host systems, leveraging the EUSART to talk to RN2903/RN2483 LoRa modules and the SPI/I2C master channel to talk to sensors and OLED status displays. With 64KB Flash, complete LoRaWAN stack and AT command parsers fit comfortably, and 4KB SRAM is sufficient for packet buffers during standard Class A operations. The 1.8V minimum VDD is supported directly by Li-coin cells, removing a regulator stage in ultra-compact designs. PPS remapping means the same SSOP-28 footprint can target either SPI or UART peripheral combinations across product SKUs without PCB respins. For higher-volume deployment, AEC-Q100 variants or upgraded PIC18F26K40 family members are recommended for field reliability.
推荐
推荐产品汇总
工程参考数据： PIC18LF26K40-E/SS ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | PIC18F26K40-E/SS | PIC18F26K40-I/SS | PIC18F26K40T-I/SS | PIC18LF26K40-I/SS |
|---|---|---|---|---|---|
| Package | 28-SSOP | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core | PIC18 8-bit (LF) | PIC18 8-bit (F) | PIC18 8-bit (F) | PIC18 8-bit (F) | PIC18 8-bit (LF) |
| Operating Voltage | 1.8 V - 3.6 V | 2.3 V - 5.5 V | 2.3 V - 5.5 V | 2.3 V - 5.5 V | 1.8 V - 3.6 V |
| Max CPU Speed | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz |
| Flash / RAM / EEPROM | 64 KB / 4 KB / 256 B | 64 KB / 4 KB / 256 B | 64 KB / 4 KB / 256 B | 64 KB / 4 KB / 256 B | 64 KB / 4 KB / 256 B |
| Operating Temperature | -40C to +125C (E) | -40C to +125C | -40C to +85C | -40C to +85C | -40C to +85C |
关键差异点
- Low-voltage LF silicon (1.8V-3.6V) operation （对比 PIC18F26K40-E/SS)
- Extended temperature range -40C to +125C (E suffix) （对比 PIC18LF26K40-I/SS)
- Peripheral Pin Select (PPS) digital routing （对比 PIC18LF26K22 (older K22))
- 64 KB Flash for richer firmware stacks （对比 PIC18F26K22-E/SS)
设计说明
Estimated: at 64 MHz Vdd=3.3V, the PIC18LF26K40-E/SS draws approximately 12 mA active, while typical XLP sleep falls below 1 µA. Place a 100 nF (X7R) and a 1-10 µF bulk ceramic on VDD/VSS within 5 mm of pins 7/8 to suppress switching transients from internal oscillator edges. For ultra-low sleep performance, ensure all I/O are configured as digital inputs with no floating edges, and disable all peripheral modules via PMD registers before SLEEP().
Route the ICSP test points (ICSPDAT on RA0/ICSPCLK on RA1/MCLR on pin 27) to an accessible 0.1-inch header for in-circuit programming and debugging. Keep crystal traces (OSC1/OSC2) short (<10 mm) and surround them with a ground pour. SSOP-28 has a 0.65 mm pitch; use at least 0.2 mm trace/space with 8 mil-1 oz copper for hand-rework survivability.
Do not exceed 3.6V on the LF variant - this will damage the silicon. Always configure CONFIG1H CP_OFF or CP_NONE for end-user firmware, and set WDT to OFF or use WWDT carefully during sleep since it can mask faults at low-duty cycles. Configure CONFIG4L's SOSC bits to enable the secondary 32.768 kHz crystal for RTC if low sleep current with timekeeping is required. PPS lock state should be set explicitly to avoid mis-routed peripheral signals at power-up.
Estimate: with 4-layer FR4 and SSOP-28 land pattern, expect to reach 64 MHz SPEC-compliant operation without current-starvation. Place bypass cap within 1 chip-height distance of VDD/VSS; route analog AVSS (grounded pin 8) directly to a ground via for ADC accuracy. Avoid crossing high-frequency PWM with high-impedance analog sensor traces to prevent crosstalk into ADC2 measurements.
合规信息
RoHS and REACH compliant per Microchip product page. AEC-Q100 not qualified per standard datasheet headline; PIC18F26K40 family parts may carry automotive equivalents sourced via separate ordering codes.
