PIC18LF26K80-I/SO - 64MHz 8-bit MCU 64KB Flash ECAN XLP | Microchip
MPN: PIC18LF26K80-I/SO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $7.46 | $7.46 |
| 10 | $6.89 | $68.90 |
| 100 | $6.12 | $612.00 |
| 500 | $5.46 | $2,730.00 |
| 1,000 | $4.83 | $4,830.00 |
PIC18LF26K80-I/SO Overview
A PIC18 microcontroller is a 8-bit Harvard-architecture MCU built on Microchip's enhanced RISC core, executing most instructions in a single 200 ns cycle. PIC18 sits within the broader PIC family -> 8-bit microcontroller -> microcontroller -> embedded computing hierarchy. The LF prefix designates a wide-voltage variant (1.8 V to 3.6 V) optimized for battery-powered and energy-harvesting applications, while the F variant supports 2.0 V to 5.5 V. The K80 series extends the K22/K40/K50/K42 lines with the addition of a hardware ECAN controller and a 12-bit ADC with capacitive touch (CTMU) support.
Key differentiating features include 16 MIPS peak throughput at 64 MHz, brown-out reset and low-voltage detect, peripheral pin select (PPS) for flexible signal routing, and on-chip ECAN 2.0B with filtering. The CTMU enables cost-effective capacitive touch sensing, while nanoWatt XLP keeps sleep current below 50 nA typical, allowing years of operation from a single coin cell.
Architecture-wise the K80 pairs the standard PIC18 ALU with a hardware multiply engine, a 31-level hardware stack, and the C compiler-friendly instruction set introduced in PIC18. Internal oscillator accuracy is factory calibrated to within +/-1 %, and the ECAN module supports CAN 2.0B active with hardware acceptance filters, reducing host CPU overhead versus software bit-banging.
Typical applications include automotive body and HVAC modules, industrial sensor nodes, capacitive touch user interfaces, CAN-connected building automation, and battery-powered remote controls. The part's ECAN peripheral makes it especially well suited to nodes that need to talk on a CAN bus without a dedicated transceiver MCU.
When designing with the K80, ensure VDD stays within 1.8 V to 3.6 V and reserve Vcap decoupling on the core regulator pin. Verify pinout against the chosen package (SOIC, SSOP, QFN, or SPDIP all share the same peripheral map) before PCB fabrication because several PPS-mapped signals change pin location across packages.
This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for PIC18LF26K80-I/SO — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with PIC18LF26K80-I/SO (same form factor and footprint) — differing in Package, ADC, Core Architecture, Mounting Type, Operating Voltage Range.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC18F26K80-I/SO
✅ Drop-In✓ In Stock
$2.87 / Unit
View Datasheet →PIC18LF46K80-I/SO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18LF26K80-I/SP
✅ Drop-In✓ In Stock
$2.65 / Unit
View Datasheet →PIC18LF26K80-I/SS
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18LF26K80-I/MM
✅ Drop-In✓ In Stock
$3.42 / Unit
View Datasheet →PIC18LF26K42-I/SO
✅ Drop-In✓ In Stock
$1.92 / Unit
View Datasheet →PIC18LF26K80-I/SO Maximum Ratings & Electrical Characteristics
| Core | PIC18 8-bit RISC |
| Maximum Clock Frequency | 64 MHz |
| Program Memory (Flash) | 64 KB (32K x 16) |
| Data RAM | 3.6 KB |
| Data EEPROM | 1 KB |
| Operating Voltage Range | 1.8 V to 3.6 V |
| Number of I/O Pins | 24 |
| ADC | 12-bit, with CTMU |
| Connectivity | ECAN 2.0B, I2C, SPI, UART/USART, LIN |
| Package | 28-SOIC (0.295" / 7.50 mm body) |
| Mounting Type | Surface Mount |
| Operating Temperature Range | -40 C to +85 C (Industrial) |
| Oscillator | Internal |
| Peripherals | Brown-out Detect/Reset, LVD, PWM, CTMU, ECAN |
| Low-Power Mode | nanoWatt XLP (<50 nA typical sleep) |
| CPU Performance | 16 MIPS (200 ns instruction cycle) |
| RoHS Status | Compliant |
| Lead-Free / Halogen-Free | Yes |
| MSL Level | MSL 1 (unlimited floor life at <30 C / 85 % RH) |
| IC Package Type | Wide-body SOIC (SO, 28-pin, 7.50 mm) |
PIC18LF26K80-I/SO Pin Configuration
| Pin 1 | MCLR — Master Clear (Reset) input, active-low |
| Pin 2 | RA0/AN0 — Digital I/O / Analog input channel 0 / CTMU |
| Pin 3 | RA1/AN1 — Digital I/O / Analog input channel 1 / CTMU |
| Pin 4 | RA2/AN2/Vref- — Digital I/O / Analog input / ADC Vref- |
| Pin 5 | RA3/AN3/Vref+ — Digital I/O / Analog input / ADC Vref+ |
| Pin 6 | RA4 — Digital I/O / Timer0 clock input |
| Pin 7 | RA5 — Digital I/O |
| Pin 8 | VSS — Ground reference |
| Pin 9 | RA7/OSC1 — Digital I/O / Crystal oscillator input |
| Pin 10 | RA6/OSC2 — Digital I/O / Crystal oscillator output |
| Pin 11 | RC0 — Digital I/O / PWM |
| Pin 12 | RC1 — Digital I/O / PWM |
| Pin 13 | RC2 — Digital I/O / PWM |
| Pin 14 | RC3 — Digital I/O / SPI/I2C |
| Pin 15 | RC4 — Digital I/O / SPI/I2C |
| Pin 16 | RC5 — Digital I/O / SPI/I2C |
| Pin 17 | RC6 — Digital I/O / UART TX |
| Pin 18 | RC7 — Digital I/O / UART RX |
| Pin 19 | VSS — Ground reference |
| Pin 20 | VDD — Positive power supply |
| Pin 21 | RB0 — Digital I/O / Interrupt-on-change |
| Pin 22 | RB1 — Digital I/O / Interrupt-on-change |
| Pin 23 | RB2 — Digital I/O / Interrupt-on-change |
| Pin 24 | RB3 — Digital I/O / Interrupt-on-change |
| Pin 25 | RB4 — Digital I/O / Interrupt-on-change |
| Pin 26 | RB5 — Digital I/O / Interrupt-on-change / ICSP |
| Pin 27 | RB6 — Digital I/O / ICSP clock |
| Pin 28 | RB7 — Digital I/O / ICSP data |
Typical Applications
PIC18LF26K80-I/SO is suitable for 6 applications: Automotive CAN Body Electronics, Industrial Sensor and Field Nodes, Capacitive Touch User Interfaces, Building Automation and HVAC Controllers, Battery-Powered Remote Controls, Medical and Wellness Monitoring Devices.
Automotive CAN Body Electronics
The PIC18LF26K80-I/SO is well suited to automotive body and HVAC nodes that need to communicate on a CAN bus at 1 Mbit/s without an external transceiver controller. Its integrated ECAN 2.0B controller with hardware acceptance filters offloads bit-stuffing and arbitration from the CPU, leaving headroom for the 8-bit core to handle HVAC logic or body control. The 12-bit ADC with CTMU enables direct sensor reading and capacitive touch on the same MCU, reducing BOM. Wide-voltage 1.8 V to 3.6 V operation supports crank-to-run voltage dips on a 12 V automotive rail after pre-regulation. Designers should pair the MCU with an MCP2561 or TJA1050 transceiver on the bus side and verify ESD performance per IEC 61000-4-2.
Recommended
Industrial Sensor and Field Nodes
The PIC18LF26K80-I/SO is ideal for industrial 4 mA to 20 mA loop-powered sensor transmitters and remote field nodes that require low sleep current and deterministic real-time response. Its nanoWatt XLP extreme-low-power mode drops quiescent current below 50 nA typical, allowing years of battery life when the node wakes briefly to measure and transmit. The 12-bit ADC provides adequate resolution for temperature, pressure, and process variable sensors, while the ECAN peripheral supports industrial CANopen and DeviceNet stacks. Designers should use the PIC18LF variant for 3.3 V sensor rails and pair with a TLE7259-3 transceiver for isolated industrial CAN. Wide operating temperature -40 C to +85 C supports outdoor enclosure mounting.
Recommended
Capacitive Touch User Interfaces
The PIC18LF26K80-I/SO integrates the CTMU (Charge Time Measurement Unit) alongside the 12-bit ADC, enabling reliable capacitive touch button, slider, and proximity sensing without an external touch controller. The mTouch software library handles debounce and water-tolerance, reducing firmware development time. The wide-voltage 1.8 V to 3.6 V LF operation allows direct battery-powered designs with no additional LDO. Designers can route touch electrodes through PPS-mapped pins to simplify PCB layout. For best noise immunity, place a guard ring around touch electrodes and add a 1 nF to 10 nF series resistor on each electrode for ESD suppression.
Recommended
Building Automation and HVAC Controllers
The PIC18LF26K80-I/SO is well matched to building automation controllers communicating on a CAN bus backbone (BACnet MS/TP-over-CAN, KNX, or vendor-specific protocols). The 64 KB Flash is ample for HVAC control algorithms, scheduling, and a small LCD UI, while the ECAN peripheral simplifies bus interfacing. The on-chip 12-bit ADC reads thermistors, pressure transducers, and airflow sensors directly. For 24 V HVAC rails, an external buck converter brings the rail down to 3.3 V for the LF variant. Pair with a CAN transceiver like the TLE6251G for industrial-grade bus isolation. AEC-Q100 qualification is not present, so for under-hood automotive use, consider the PIC18F version.
Recommended
Battery-Powered Remote Controls
The PIC18LF26K80-I/SO is ideal for handheld remote controls and wireless sensor transmitters powered by a single coin cell or two AAA batteries. Its nanoWatt XLP extreme-low-power mode keeps sleep current below 50 nA typical, extending battery life to multiple years, while the 64 MHz core wakes quickly to process button events or RF transmissions. The 12-bit ADC reads battery voltage for low-battery detection without an external divider. Designers should use the LF variant to leverage the lower-voltage threshold and pair with a sub-GHz transmitter such as the MRF89XA or a Bluetooth Low Energy module like the RN4870. Power-on brown-out reset is critical for cold-start reliability.
Recommended
Medical and Wellness Monitoring Devices
The PIC18LF26K80-I/SO supports portable medical and wellness monitoring devices such as pulse oximeters, blood pressure monitors, and connected thermometers where low power, deterministic response, and reliable sensor reading are required. Its 12-bit ADC with CTMU reads optical, pressure, and thermistor sensors directly, while the 64 MHz core executes filter and trend algorithms in real time. The 1.8 V to 3.6 V LF variant enables direct operation from a single lithium coin cell. For IEC 60601-1 compliance, an isolated power supply and reinforced isolation barrier are still required. Pair with a low-power BLE module for wireless tethering and use the internal EEPROM for storing calibration coefficients.
Recommended
Recommended Products Summary
Engineering reference data for PIC18LF26K80-I/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC18F26K80-I/SO | PIC18LF46K80-I/SO | PIC18LF26K42-I/SO |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SOIC (7.50 mm) | 28-SOIC (7.50 mm) - same | 28-SOIC (7.50 mm) - same | 28-SOIC (7.50 mm) - same |
| Core | PIC18 8-bit RISC | PIC18 8-bit RISC | PIC18 8-bit RISC | PIC18 8-bit RISC |
| Maximum Clock Frequency | 64 MHz | 64 MHz | 64 MHz | 64 MHz |
| Flash | 64 KB | 64 KB | 128 KB (+100 %) | 64 KB |
| Data RAM | 3.6 KB | 3.6 KB | 3.8 KB | 4 KB |
| Operating Voltage | 1.8 V to 3.6 V (LF) | 2.0 V to 5.5 V (F) | 1.8 V to 3.6 V (LF) | 1.8 V to 3.6 V (LF) |
| ECAN 2.0B | Yes | Yes | Yes | No (removed in K42) |
| CTMU Capacitive Touch | Yes | Yes | Yes | Yes (CWG added) |
Key Differentiators
- Integrated ECAN 2.0B with hardware acceptance filters (vs PIC18LF26K42-I/SO)
- Wide-voltage 1.8 V to 3.6 V LF operation (vs PIC18F26K80-I/SO)
- CTMU capacitive touch with 12-bit ADC (vs PIC18LF26K40-I/SS)
- 64 KB Flash for HVAC/sensor firmware (vs PIC18F26K22-I/SO)
Design Notes
The PIC18LF26K80-I/SO requires a 1 uF to 10 uF decoupling capacitor placed within 5 mm of the VDD pin (pin 20), and a separate 100 nF ceramic on each additional VDD pin if present. Estimated: at 64 MHz operation with all peripherals active the device draws up to 15 mA peak, so a 3.3 V LDO with at least 50 mA headroom is recommended. The LF variant requires VDD to remain above 1.8 V at all times; for battery designs below 3.0 V, derate the maximum clock to 32 MHz to maintain regulation margin.
Route the ICSP signals (RB6/RB7, MCLR) to a dedicated 5-pin header or test pad so production programming is possible without rework. Place a 10 kohm pull-up on MCLR and a 100 nF cap to VDD for proper reset behaviour. The SOIC-28 package has no exposed thermal pad, so thermal dissipation is limited to roughly 1 W at 25 C ambient; for high-current peripherals (driving LEDs directly), spread the load across multiple I/O pins to stay below 25 mA per pin and 200 mA per port.
The ECAN module requires careful PCB layout: keep the CANH/CANL differential pair matched to 120 ohm impedance within 5 mil tolerance, and isolate the bus traces from digital switching signals by at least 3 mm. Place a 120 ohm termination resistor at each end of the bus, not at the MCU. Estimated: at 1 Mbit/s bus speed the stub length from the transceiver to the bus must remain below 30 mm to avoid reflection. Add TVS diodes such as PESD1CAN for automotive ESD compliance.
Do not assume the LF prefix means the part runs on 5 V - the PIC18LF26K80-I/SO max VDD is 3.6 V and any over-voltage will permanently damage the silicon. Similarly, do not substitute the F variant (PIC18F26K80) on a 3.3 V board without confirming peripheral electrical characteristics are compatible at the lower rail. Always configure the configuration bits (CONFIG1H, CONFIG2L, etc.) to disable the Watchdog Timer or set an appropriate postscaler for first-power-up code; an unconfigured watchdog can stall your firmware at the first MCU reset.
Estimated: at 64 MHz full operation across all I/O driving 5 mA each, total power dissipation is approximately 100 mW, yielding a 5 C junction rise in the SOIC-28 package (theta_JA around 50 C/W). The industrial -40 C to +85 C operating range leaves ample thermal margin for typical designs. For closed enclosures without airflow, derate by 25 % or clock the part to 32 MHz. The part is not AEC-Q100 qualified, so for under-hood automotive use the PIC18F26K80-I/MM in QFN package or the PIC18F46K80 should be considered instead.
Compliance Information
RoHS compliant per Microchip product page. Industrial -40 C to +85 C operating temperature only; AEC-Q100 automotive qualification is NOT present. For automotive body electronics above 85 C ambient, choose PIC18F26K80-I/MM QFN variant or consult Microchip factory for AEC-Q100 screening options. Lead-free reflow profile per JEDEC J-STD-020 is supported.
