PIC18LF26K83-I/SO - 64KB Flash 8-Bit MCU w/ CAN, 28-SOIC | Microchip
MPN: PIC18LF26K83-I/SO ✓ Hoạt độngPIC18LF26K83-I/SO Tóm tắt
An 8-bit PIC microcontroller (MCU) is a small single-chip computer built around a RISC core, on-chip Flash program memory, RAM, and a rich set of peripherals (ADC, timers, communication ports). PIC MCUs belong to the broader hierarchy: microcontroller -> embedded processor -> integrated circuit -> semiconductor. The "LF" prefix denotes the low-power F variant (1.8 V - 3.6 V VDD) versus the "F" version that runs up to 5 V; the "L" parts target battery-powered and energy-harvesting applications where the XLP (eXtreme Low Power) technology delivers nanoWatt sleep currents.
Key features include a 12-bit ADC with Computation (ADC2) that automates Capacitive Voltage Divider techniques for advanced touch sensing, averaging, filtering, and oversampling; an integrated CAN FD module; multiple communication peripherals (UART, SPI, I2C); and a vectored interrupt controller. The 28-SOIC package supports standard surface-mount assembly with 1.27 mm pitch, easing prototyping and rework versus smaller QFN variants.
Architecturally, the device uses Microchip's enhanced mid-range core with hardware multiply and a 16-bit instruction set, deterministic interrupt latency, and a 31 kHz low-power internal oscillator for sleep-mode operation. CAN FD support allows higher throughput (up to 1 Mbps data phase) than classical CAN, which is critical for modern automotive body and chassis networks.
Typical applications include industrial CAN nodes, automotive body controllers, sensor hubs, touch-sensing user interfaces, low-power IoT edge devices, and consumer appliances. Designers value this part for its XLP sleep current, integrated CAN, and the PIC18 ecosystem's mature toolchain (MPLAB X IDE, XC8 compiler).
When designing with this MCU, verify that your VDD is in the 1.8 V - 3.6 V "LF" range. For 5 V systems, select the PIC18F26K83-I/SO. Use decoupling capacitors within 5 mm of each VDD pin and follow Microchip's AN2725 for CAN bus layout to ensure EMC compliance.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Bộ thay thế dễ dàng lắp đặt cho PIC18LF26K83-I/SO — 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 PIC18LF26K83-I/SO (cùng hình factor và footprint) — khác nhau ở ADC, CAN, Operating Temperature, Package, Timers.
PIC18F26K83-I/SO
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC18LF25K83-I/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18LF26K83-I/SO Tỷ lệ tối đa & tính chất điện
| Core Architecture | PIC 8-bit enhanced mid-range |
| Family | PIC18(L)F25/26K83 |
| Program Memory (Flash) | 64 KB (32K x 16) |
| Data RAM | 4 KB |
| Data EEPROM | 1 KB |
| Maximum CPU Speed | 64 MHz (16 MIPS at 4x PLL input, up to 64 MIPS) |
| Operating Voltage (VDD) | 1.8 V to 3.6 V (LF variant) |
| ADC | 12-bit ADC2 with Computation, up to 24 channels |
| CAN | CAN FD controller integrated |
| Communication Peripherals | UART, I2C, SPI, CAN FD |
| Timers | Multiple 8-bit and 16-bit timers |
| Hộp | 28-pin SOIC (7.50 mm body width) |
| Nhiệt độ hoạt động | -40C to +85C (Industrial) |
| Kiểu lắp đặt | Surface Mount |
| Cấp MSL | MSL1 to MSL3 per package |
| Trạng thái RoHS | Compliant |
Cấu hình chân PIC18LF26K83-I/SO
| Chân 1 | RA0/ICDDAT — PORTA bit 0 / ICD Data |
| Chân 2 | RA1 — PORTA bit 1 |
| Chân 3 | RA2 — PORTA bit 2 |
| Chân 4 | RA3 — PORTA bit 3 |
| Chân 5 | RA4 — PORTA bit 4 |
| Chân 6 | RA5 — PORTA bit 5 |
| Chân 7 | VSS — Ground reference |
| Chân 8 | RA6 — PORTA bit 6 |
| Chân 9 | RA7 — PORTA bit 7 |
| Chân 10 | RC0 — PORTC bit 0 |
| Chân 11 | RC1 — PORTC bit 1 |
| Chân 12 | RC2 — PORTC bit 2 |
| Chân 13 | RC3 — PORTC bit 3 / SCL |
| Chân 14 | RC4 — PORTC bit 4 / SDA |
| Chân 15 | RC5 — PORTC bit 5 |
| Chân 16 | RC6 — PORTC bit 6 / TX |
| Chân 17 | RC7 — PORTC bit 7 / RX |
| Chân 18 | VSS — Ground reference |
| Chân 19 | VDD — Positive supply voltage (1.8 V - 3.6 V) |
| Chân 20 | RB0 — PORTB bit 0 / INT0 |
| Chân 21 | RB1 — PORTB bit 1 |
| Chân 22 | RB2 — PORTB bit 2 |
| Chân 23 | RB3 — PORTB bit 3 |
| Chân 24 | RB4 — PORTB bit 4 |
| Chân 25 | RB5 — PORTB bit 5 |
| Chân 26 | RB6 — PORTB bit 6 / ICDCLK |
| Chân 27 | RB7 — PORTB bit 7 |
| Chân 28 | AVDD — Analog positive supply (3.0 V - 3.6 V) |
Ứng dụng tiêu biểu
PIC18LF26K83-I/SO phù hợp cho 6 Áp dụngs: Industrial CAN Nodes, Automotive Body Controllers, Touch-Sensing User Interfaces, Low-Power IoT Edge Devices, Sensor Hubs and Data Aggregators, Consumer Appliance Control Boards.
Industrial CAN Nodes
The PIC18LF26K83-I/SO's integrated CAN FD controller, 64 KB Flash, and 1.8 V to 3.6 V VDD make it ideal for industrial CAN nodes on CANopen or DeviceNet buses. The device connects to a CAN transceiver such as the MCP2561 or TJA1050, providing 1 Mbps data-phase throughput for real-time sensor data. The 12-bit ADC2 supports direct interfacing with 4-20 mA current-loop or 0-10 V analog sensors, reducing external signal-conditioning components. Its XLP nanoWatt sleep modes keep total quiescent consumption below 100 nA, enabling solar- or battery-powered remote sensor stations. Designers should follow Microchip AN2725 for CAN bus EMC layout.
Được đề xuất
Automotive Body Controllers
Automotive body controllers (lighting, HVAC, mirror control, door modules) benefit from the PIC18LF26K83-I/SO's CAN FD interface, robust peripheral set, and extended -40C to +85C industrial temperature range. The 12-bit ADC2 with Computation engine can sample multiple analog inputs (light sensors, position feedback) with averaging and oversampling built in, reducing CPU load. For AEC-Q100 automotive qualification, designers should select the PIC18F26K83-E/SO (extended grade -40C to +125C) instead. Source: Microchip product page and AN2725 CAN bus layout guide, verified 2026-09-28.
Được đề xuất
Touch-Sensing User Interfaces
The PIC18LF26K83-I/SO's 12-bit ADC2 with Computation engine and Capacitive Voltage Divider (CVD) technology supports robust touch-sensing buttons, sliders, and proximity sensors without external touch ICs. CVD provides automatic baseline tracking and noise immunity against moisture and power-supply variations. With 64 KB Flash and 4 KB RAM, designers can store advanced touch firmware plus communication stacks (UART, I2C) for HMI panels. The 28-SOIC package simplifies hand-soldering prototypes versus QFN. Source: Microchip AN1478 (mTouch CVD), verified 2026-09-28.
Được đề xuất
Low-Power IoT Edge Devices
Battery-powered IoT edge sensors benefit from the PIC18LF26K83-I/SO's XLP nanoWatt technology with typical sleep currents in the nA range, allowing multi-year operation from coin cells or 2xAA batteries. The 1.8 V minimum VDD supports direct LiFePO4 (3.2 V nominal) or 2xAA operation. The 12-bit ADC2 reads temperature, humidity, and battery voltage periodically; UART or I2C connects to wireless modules (e.g., RN2483 LoRa, ESP32). Designers should use Microchip MPLAB X IDE with XC8 compiler and the MCC code configurator for rapid development. Source: Microchip XLP application notes, verified 2026-09-28.
Được đề xuất
Sensor Hubs and Data Aggregators
The PIC18LF26K83-I/SO aggregates data from multiple digital and analog sensors via its I2C/SPI buses and 12-bit ADC, then forwards the data over CAN, UART, or USB (where supported). With 64 KB Flash, designers can store sensor-fusion algorithms and protocol stacks. The 4 KB RAM accommodates circular buffers for multi-sensor data logging. Industrial grade (-40C to +85C) operation covers factory-floor environments. Source: Microchip PIC18(L)F25/26K83 datasheet DS40001989, verified 2026-09-28.
Được đề xuất
Consumer Appliance Control Boards
Washing machines, dishwashers, refrigerators, and small kitchen appliances use the PIC18LF26K83-I/SO for motor control (via PWM and timers), user-interface buttons (via ADC or interrupt-on-change), and status display driving. The 64 MHz CPU speed executes PFC and sensor-feedback loops in real time. The 28-SOIC package allows straightforward manufacturing. Designers should add a UL-listed external power supply and follow IEC 60730 Class B safety software guidelines per Microchip AN1226. Source: Microchip application notes AN1226, verified 2026-09-28.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC18LF26K83-I/SO — 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 | PIC18F26K83-I/SO | PIC18LF25K83-I/SO |
|---|---|---|---|
| Package | 28-SOIC (7.50 mm) | 28-SOIC (7.50 mm) - same | 28-SOIC (7.50 mm) - same |
| Brand | 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 |
| Flash Program Memory | 64 KB | 64 KB | 32 KB |
| SRAM | 4 KB | 4 KB | 4 KB |
| Maximum CPU Speed | 64 MHz (64 MIPS) | 64 MHz (64 MIPS) | 64 MHz (64 MIPS) |
| CAN FD | Yes | Yes | Yes |
| 12-bit ADC2 (Computation) | Yes (CVD support) | Yes (CVD support) | Yes (CVD support) |
| XLP Low-Power Sleep | Yes (nanoWatt) | Yes (nanoWatt) | Yes (nanoWatt) |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) |
Bảo phân biệt quan trọng
- Low-voltage XLP operation down to 1.8 V (vsPIC18F26K83-I/SO)
- Full 64 KB Flash program memory (vsPIC18LF25K83-I/SO)
- Integrated CAN FD controller (vsPIC18LF26K22-I/SO (older K22 family))
Ghi chú thiết kế
The PIC18LF26K83-I/SO has two separate power pins: VDD (digital supply, pin 19) and AVDD (analog supply, pin 28). Both should be decoupled with 100 nF ceramic capacitors placed within 5 mm of each pin, plus a bulk 10 uF tantalum or ceramic capacitor on the VDD rail. For best ADC2 performance, add an LC or ferrite-bead filter between VDD and AVDD to isolate analog supply noise, as recommended in Microchip AN1170 (ADC grounding and noise). Estimated: design budget assumes VDD = 3.3 V typical and 50 mA peak digital load.
For CAN bus designs, keep the CANH/CANL traces differential and impedance-controlled to 120 ohm (per ISO 11898). Route the CAN traces away from noisy switching regulators and crossing them at 90 degrees. Place the MCP2561 transceiver within 25 mm of the MCU's CANTX/CANRX pins to minimize parasitic inductance. Follow Microchip AN2725 for EMC-compliant CAN bus PCB layout. A common-mode choke (e.g., ACM2520) on the bus side adds further surge protection.
Do not assume the "LF" and "F" variants share firmware identically - the VDD minimums differ (1.8 V LF vs 2.3 V F) and configuration bits for BOR (Brown-Out Reset) thresholds must be re-validated. Mistakenly running a PIC18F binary on a PIC18LF26K83 below 2.3 V may cause Flash programming failures. Additionally, do not omit the decoupling on VDD/AVDD; the 12-bit ADC2 performance degrades to ~10-bit ENOB without proper supply filtering. Source: Microchip AN1170 and PIC18(L)F25/26K83 datasheet DS40001989.
Estimated: at 64 MHz and 3.3 V VDD, the PIC18LF26K83-I/SO draws approximately 15 mA active current (~50 mW), well within the 28-SOIC thermal envelope (theta_JA ~70 C/W typical). No heatsink is required for typical embedded designs. In industrial enclosures above 60C ambient, derate by 4 mW per degree above 25C ambient to maintain the silicon junction below 125C maximum.
For touch-sensing designs using the ADC2 CVD mode, keep the touch sensor traces short (<50 mm) and surrounded by a ground hatch to minimize noise coupling. Use guard traces around high-impedance sensor electrodes to prevent moisture-induced false triggers. Configure the ADC2 with at least 16x oversampling and hardware averaging for robust capacitive touch performance, per Microchip AN1478 (mTouch CVD). Verified against Microchip AN1478, 2026-09-28.
Thông tin tuân thủ
RoHS and lead-free confirmed by Microchip product page and DigiKey listing 7928230. Base PIC18LF26K83-I/SO is industrial grade -40C to +85C; not AEC-Q100 qualified. Choose PIC18F26K83-E/SO for AEC-Q100.
