PIC18LF26K40-I/SP - 8-Bit 64MHz MCU 64KB Flash 28-SPDIP | Microchip
MPN: PIC18LF26K40-I/SP ✓ Hoạt độngPIC18LF26K40-I/SP Tóm tắt
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, RAM, non-volatile program memory, and peripheral interfaces on one die. The PIC18LF26K40 belongs to the PIC18 microcontrollers > 8-bit MCU > embedded processor > microcontroller hierarchy within Microchip's eXtreme Low Power (XLP) family, a category engineered for battery-powered and energy-harvesting applications where quiescent current directly governs battery life.
Key features include 4KB RAM, 256B EEPROM, 24 channels of 10-bit ADC, a 5-bit DAC, two comparators, PWM, CCP, CWG (Complementary Waveform Generator), HLT (Hardware Limit Timer), WWDT (Windowed Watchdog Timer), SCAN/CRC, ZCD (Zero-Cross Detection), PPS (Peripheral Pin Select), EUSART, and SPI/I2C. The device operates from 1.8V to 3.6V, delivering 64MHz of CPU performance at low power thanks to nanoWatt XLP technology with deep-sleep currents in the nanoampere range.
Architecturally, the PIC18LF26K40 uses an enhanced Harvard RISC core with 49 instructions and a 16-level hardware stack, augmented by Peripheral Pin Select (PPS) which allows remapping of digital peripherals to a wide range of I/O pins, easing PCB layout. The integrated 10-bit ADC with up to 24 channels enables direct connection to multiple analog sensors, while the 5-bit DAC supports setpoint generation, trimming, and analog bias control without external components.
Typical applications include low-power IoT sensor nodes, battery-operated consumer appliances, industrial control panels, smart metering, LED lighting control, and USB-to-UART bridge adapters in compact through-hole form factors. The wide analog integration (ADC/DAC/comparators) suits mixed-signal designs where discrete op-amps and ADCs would otherwise inflate BOM cost and PCB area.
When designing with the PIC18LF26K40, ensure the VDD rail stays within 1.8V-3.6V and add decoupling (100nF plus 10uF bulk) on every supply pin. PPS routing must be configured in firmware before the corresponding peripheral is enabled; an unconfigured PPS can leave a peripheral electrically disconnected. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the bare datasheet.
Bộ thay thế dễ dàng lắp đặt cho PIC18LF26K40-I/SP — 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 PIC18LF26K40-I/SP (cùng hình factor và footprint) — khác nhau ở ADC, Package, Operating Temperature, I/O Pins, PWM Channels.
PIC18F26K40-I/SP
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC18LF26K40-E/SP
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18LF25K40-I/SP
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18LF24K40-I/SP
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18LF26K22-I/SP
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC18LF26K40-I/SP Tỷ lệ tối đa & tính chất điện
| Core Architecture | PIC18 (8-bit RISC) |
| CPU Core | PIC18 Enhanced Harvard |
| Instruction Set | 49 instructions, 16-level hardware stack |
| Maximum CPU Frequency | 64 MHz |
| Program Memory (Flash) | 64 KB (32K x 16) |
| Data SRAM | 4 KB |
| Operating Voltage (VDD) | 1.8 V to 3.6 V |
| I/O Pins | 24 (approximate, per SPDIP-28) |
| ADC | 10-bit, up to 24 channels |
| DAC | 5-bit, 1 channel |
| Comparators | 2 |
| PWM / CCP / CWG | PWM, CCP, Complementary Waveform Generator |
| Timers / WWDT / HLT | Yes (Windowed WDT, Hardware Limit Timer) |
| Communication | EUSART, SPI, I2C |
| Peripheral Pin Select (PPS) | Yes |
| ZCD / SCAN / CRC | Yes |
| Nhiệt độ hoạt động | -40 C to +85 C (industrial, 'I' grade) |
| Hộp | 28-pin SPDIP (SP) |
| Kiểu lắp đặt | Through-Hole |
| XLP / nanoWatt Technology | Yes (eXtreme Low Power) |
| Trạng thái RoHS | Compliant |
Cấu hình chân PIC18LF26K40-I/SP
| Chân 1 | MCLR/RE3 — Master Clear (reset) input or digital I/O |
| Chân 2 | RA0 — PORTA bit 0 (analog/digital I/O via PPS) |
| Chân 3 | RA1 — PORTA bit 1 (analog/digital I/O via PPS) |
| Chân 4 | RA2 — PORTA bit 2 (analog/digital I/O via PPS) |
| Chân 5 | RA3 — PORTA bit 3 (analog/digital I/O via PPS) |
| Chân 6 | RA4 — PORTA bit 4 (analog/digital I/O via PPS) |
| Chân 7 | RA5 — PORTA bit 5 (analog/digital I/O via PPS) |
| Chân 8 | RA6 — PORTA bit 6 (analog/digital I/O via PPS) |
| Chân 9 | RA7 — PORTA bit 7 (analog/digital I/O via PPS) |
| Chân 10 | VSS — Ground reference |
| Chân 11 | VDD — Positive supply (1.8V-3.6V) |
| Chân 12 | RB0 — PORTB bit 0 (interrupt-on-change, analog/digital I/O) |
| Chân 13 | RB1 — PORTB bit 1 (interrupt-on-change, analog/digital I/O) |
| Chân 14 | RB2 — PORTB bit 2 (interrupt-on-change, analog/digital I/O) |
| Chân 15 | RB3 — PORTB bit 3 (interrupt-on-change, analog/digital I/O) |
| Chân 16 | RB4 — PORTB bit 4 (interrupt-on-change, analog/digital I/O) |
| Chân 17 | RB5 — PORTB bit 5 (interrupt-on-change, ICP, analog/digital I/O) |
| Chân 18 | RB6 — PORTB bit 6 (PGC, ICP, analog/digital I/O) |
| Chân 19 | RB7 — PORTB bit 7 (PGD, ICP, analog/digital I/O) |
| Chân 20 | VSS — Ground reference |
| Chân 21 | VDD — Positive supply (1.8V-3.6V) |
| Chân 22 | RC0 — PORTC bit 0 (analog/digital I/O via PPS) |
| Chân 23 | RC1 — PORTC bit 1 (analog/digital I/O via PPS) |
| Chân 24 | RC2 — PORTC bit 2 (analog/digital I/O via PPS) |
| Chân 25 | RC3 — PORTC bit 3 (analog/digital I/O via PPS) |
| Chân 26 | RC4 — PORTC bit 4 (analog/digital I/O via PPS) |
| Chân 27 | RC5 — PORTC bit 5 (analog/digital I/O via PPS) |
| Chân 28 | RC6 — PORTC bit 6 (TX/CK, analog/digital I/O via PPS) |
| Chân 29 | RC7 — PORTC bit 7 (RX/DT, analog/digital I/O via PPS) |
| Chân 30 | VSS — Ground reference |
| Chân 31 | VDD — Positive supply (1.8V-3.6V) |
| Chân 32 | RE0 — PORTE bit 0 (analog/digital I/O via PPS) |
| Chân 33 | RE1 — PORTE bit 1 (analog/digital I/O via PPS) |
| Chân 34 | RE2 — PORTE bit 2 (analog/digital I/O via PPS) |
Ứng dụng tiêu biểu
PIC18LF26K40-I/SP phù hợp cho 7 Áp dụngs: Battery-Powered IoT Sensor Node, Industrial Control Panel Interface, Smart Metering and Energy Monitoring, LED Lighting Control and Color Mixing, Automotive Body and Comfort Electronics, Consumer Appliance Control Board, USB-to-UART Bridge Adapter.
Battery-Powered IoT Sensor Node
The PIC18LF26K40-I/SP is well-suited for battery-powered IoT sensor nodes because the LF silicon supports 1.8V-3.6V operation directly from two AA cells or a single Li-ion cell, while XLP nanoWatt technology drives sleep currents into the nanoampere range to extend battery life to years. Its 24-channel 10-bit ADC scans multiple analog sensors (temperature, humidity, gas) without external multiplexing, and the integrated EUSART/SPI/I2C blocks connect to radios, EEPROMs, or sensors. With 64 KB of Flash the part hosts OTA bootloader plus application logic, and Peripheral Pin Select (PCB) lets the engineer reassign digital peripheral pins to free analog inputs without PCB rework. The 28-SPDIP through-hole package is friendly to hand-soldered prototypes and field-replaceable modules.
Được đề xuất
Industrial Control Panel Interface
For industrial control panels, the PIC18LF26K40-I/SP provides the digital I/O and analog integration needed to read pushbuttons, potentiometers, and 4-20 mA loops while driving relays, LEDs, and segment displays. The 10-bit ADC with up to 24 channels accepts multiple sensor inputs simultaneously, and the integrated 5-bit DAC supports setpoint or trim-voltage generation without an external DAC chip. Its -40C to +85C industrial temperature range and through-hole SPDIP package suit harsh factory environments where vibration tolerance and field serviceability matter. The CWG (Complementary Waveform Generator) produces dead-band-controlled complementary PWM for power-converter feedback loops, while the ZCD (Zero-Cross Detect) simplifies AC-line triggering.
Được đề xuất
Smart Metering and Energy Monitoring
In smart electricity, water, or gas meters, the PIC18LF26K40-I/SP reads analog front-end signals through its 10-bit ADC while the integrated comparators implement zero-crossing detection for AC-line metering. The XLP low-power modes allow the MCU to sleep between measurements, drawing only nanoamps while accumulating metrology data over long intervals, and the 64 KB Flash holds both the metering firmware and communication stacks (DLMS/COSEM, M-Bus, or wireless M-Bus). The 5-bit DAC can drive a precision bias or reference trim, and PPS allows the engineer to route UART/SPI to the meter's optical port or wireless module without remapping the PCB. Industrial-grade temperature ensures stable operation in outdoor meter enclosures.
Được đề xuất
LED Lighting Control and Color Mixing
The PIC18LF26K40-I/SP drives multi-channel LED lighting systems using its PWM, CCP, and CWG peripherals to generate precise color-mixed or dimmed outputs. The 10-bit ADC monitors light sensors for closed-loop lumen maintenance, while the 5-bit DAC trims the LED current reference. PPS remaps the PWM outputs to any I/O pin so PCB layout can place FET drivers near their LEDs without burning CPU resources on software PWM. The 1.8V-3.6V VDD lets the design operate from a single Li-ion cell or USB rail, while the CWG with dead-band control prevents shoot-through in half-bridge LED driver stages. Industrial temperature range supports outdoor architectural lighting.
Được đề xuất
Automotive Body and Comfort Electronics
The PIC18LF26K40-I/SP targets automotive body and comfort modules including interior lighting controllers, mirror adjusters, and seat-position sensors where its 24 ADC channels read multiple potentiometers simultaneously. The CWG and PWM peripherals drive small DC motors and LED strings with dead-band control, and the integrated comparators implement over-current protection. PPS keeps the BOM compact by removing external glue logic, and the industrial -40C to +85C temperature range covers cabin electronics. For under-hood applications, choose the PIC18F26K40-I/SP variant or migrate to AEC-Q100-qualified PIC18 K40 members. The 28-SPDIP package is convenient for serviceable automotive aftermarket modules.
Được đề xuất
Consumer Appliance Control Board
In consumer appliances such as coffee machines, washing machines, or air purifiers, the PIC18LF26K40-I/SP integrates the user-interface keypad, display driver, and main control loop on a single chip. The 24 ADC channels scan temperature, level, and humidity sensors without external mux ICs, and the integrated comparators implement safety-critical over-temperature shutdown. The XLP nanoWatt technology cuts standby power to meet stringent energy regulations (e.g., EU Ecodesign), while the through-hole SPDIP package simplifies assembly-line hand rework and field repairs. 64 KB Flash stores the appliance firmware plus optional USB device stack for diagnostics or firmware updates via the EUSART/SPI.
Được đề xuất
USB-to-UART Bridge Adapter
The PIC18LF26K40-I/SP serves as a USB-to-UART bridge or general-purpose serial protocol converter in low-cost debug tools and industrial gateways. The integrated EUSART and SPI/I2C peripherals map to external interfaces while the on-chip ADC monitors supply voltage and reference signals. The 64 KB Flash stores USB CDC and HID stacks, and the PPS block routes the UART pins to the DB9 or USB-C connector without PCB rework. Operating from 1.8V-3.6V, the part pairs with modern low-voltage USB controllers. The 28-SPDIP package allows hand-soldering in small-batch adapter production and field replacements.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC18LF26K40-I/SP — 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 | PIC18F26K40-I/SP | PIC18LF26K40-E/SP | PIC18LF26K40-I/MV | PIC18LF25K40-I/SP | PIC18LF24K40-I/SP | PIC18LF26K22-I/SP |
|---|---|---|---|---|---|---|---|
| Package | 28-SPDIP (SP) - through-hole | 28-SPDIP (SP) - same | 28-SPDIP (SP) - same | UQFN-28 (MV) - different | 28-SPDIP (SP) - same | 28-SPDIP (SP) - same | 28-SPDIP (SP) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Operating Voltage (VDD) | 1.8 V to 3.6 V | 2.3 V to 5.5 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V |
| CPU Frequency | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz |
| Flash Program Memory | 64 KB | 64 KB | 64 KB | 64 KB | 32 KB | 16 KB | 64 KB |
| RAM | 4 KB | 4 KB | 4 KB | 4 KB | 2 KB | 1 KB | 3.8 KB |
| Temperature Grade | Industrial (-40C to +85C) | Industrial (-40C to +85C) | Extended (-40C to +125C) | Industrial (-40C to +85C) | Industrial (-40C to +85C) | Industrial (-40C to +85C) | Industrial (-40C to +85C) |
| Peripheral Pin Select (PPS) | Yes | Yes | Yes | Yes | Yes | Yes | No |
| CWG / ZCD | Yes | Yes | Yes | Yes | Yes | Yes | No |
Bảo phân biệt quan trọng
- Wide analog integration (24 ADC channels + 5-bit DAC + 2 comparators) (vsPIC18LF25K40-I/SP)
- Low-voltage LF silicon supports 1.8V min VDD (vsPIC18F26K40-I/SP)
- PPS plus CWG plus ZCD plus SCAN/CRC (vsPIC18LF26K22-I/SP)
Ghi chú thiết kế
The PIC18LF26K40-I/SP operates from 1.8V-3.6V on VDD; place a 100nF ceramic decoupling capacitor within 5 mm of every VDD pin and a 10uF bulk tantalum or ceramic on the main VDD rail. Tie unused VDD pins to VDD rather than leaving them floating. The 'LF' silicon requires a minimum VDD rise time per datasheet to ensure proper Power-on Reset; if VDD ramps too slowly, use the internal Brown-out Reset or an external supervisory circuit (e.g., MCP101). Estimated: at 64 MHz CPU and VDD=3.3V, the core current is approximately 15 mA per datasheet typical curves, leaving ~10 mA budget for I/O and peripherals.
Place the ICSP/PGD (RB7) and PGC (RB6) pins on accessible test pads or a 5-pin header to enable in-circuit programming and debugging with MPLAB SNAP or PICkit 4. PPS routing must be configured in firmware before peripheral enable; an unconfigured PPS output remains high-impedance and can confuse downstream logic. Keep the analog AVdd/AVss pair separated from noisy digital traces and consider a ferrite bead between VDD and AVdd if the analog readings show switching noise.
Do not exceed 3.6V on VDD or any I/O pin - the LF silicon is not 5V-tolerant on digital inputs even in open-drain mode. Configure the MCLR pin as a reset input (default) rather than RE3 I/O unless the firmware explicitly disables the MCLR function; otherwise the part will continuously reset. Watch the SSP1ADD register for I2C baud-rate errors at FOSC/4 - common bug when migrating from PIC16 to PIC18. The 24 ADC channels share an input mux; sampling rate drops if all channels are scanned at full speed.
Estimated: at 64 MHz CPU and 3.6V VDD, the PIC18LF26K40-I/SP core current reaches approximately 15-20 mA per datasheet DC characteristics, dissipating 0.05-0.07W. With the SPDIP-28 package theta_JA near 70 C/W on a 1 oz 2-layer board, junction temperature rise above 25 C ambient is only 4-5 C, so no heatsink is required. Reduce FOSC and place the CPU in Sleep or Doze mode when battery life dominates the design.
Thông tin tuân thủ
RoHS and lead-free per Microchip product page; halogen_free status not stated in verified data. AEC-Q100 not qualified for this part; AEC-Q100 grade is a separate -Q1 suffix variant not in scope here.
