PIC18LF26K83-I/SS - 64KB Flash, 8-bit XLP MCU, 28-SSOP | Microchip
MPN: PIC18LF26K83-I/SS ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.45 | $4.45 |
| 10 | $3.95 | $39.50 |
| 100 | $3.42 | $342.00 |
| 500 | $3.05 | $1,525.00 |
| 1,000 | $2.78 | $2,780.00 |
PIC18LF26K83-I/SS Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory, working RAM, and peripherals such as ADC, timers, and communication interfaces. The PIC18 family uses a modified Harvard RISC architecture and 16-bit opcodes, giving it higher code density and predictable interrupt latency than legacy 8-bit cores. Within the broader taxonomy: PIC18 -> 8-bit microcontroller -> microcontroller -> integrated circuit -> semiconductor. The 'LF' prefix denotes the low-Vdd core variant optimized for 1.8-3.6V operation, and 'K83' identifies the CAN-enabled sub-family with the ADC2 (12-bit with Computation) peripheral and 12-bit DAC.
Key features include 64 KB self-programmable Flash (32K x 16), 4 KB SRAM, 1 KB EEPROM, 12-bit ADC2 with CVD (Capacitive Voltage Divider) for touch sensing, a 5-bit DAC, a 10-bit DAC, multiple PWM/SCCP/MCCP timers, two I2C, two SPI, two UART, and a CAN 2.0B module. Operating voltage spans 1.8V to 3.6V with sleep currents under 1 uA typical in XLP modes. The 28-pin SSOP footprint offers hand-solderable SOIC-style leads suitable for prototyping and small-form-factor industrial modules.
The PIC18LF26K83 uses a 16-bit modified Harvard architecture with a hardware stack for fast context save/restore, dedicated peripheral-pin-select (PPS) routing for flexible signal mapping, and an on-chip 32 kHz oscillator plus 4x PLL to reach 64 MHz from low-frequency references. ADC2 enables automated oversampling and post-processing for noise-tolerant analog readings without CPU intervention.
Typical applications include automotive body and sensor networks (CAN-based), industrial control and HMI with capacitive touch, low-power IoT sensor nodes, portable medical peripherals, and battery-backed instrumentation. The integrated CAN bus and CIP (Core Independent Peripherals) make it well suited to networked embedded designs where deterministic peripheral interaction is critical.
When designing with this part, ensure decoupling caps are placed close to VDD/AVDD pins and that the PLL configuration words are programmed for the target oscillator source. Using PPS remapping carefully prevents conflicts with the dedicated ADC reference pins.
This page synthesizes distributor pricing, drop-in same-package alternatives, and engineering design notes that are not collected in any single manufacturer datasheet or distributor catalog page.
Drop-in alternatives for PIC18LF26K83-I/SS — 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 PIC18LF26K83-I/SS (same form factor and footprint) — differing in ADC, Core Architecture, Package, Timers, Program Memory (Flash).
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC18LF25K83-I/SS
✅ Drop-In✓ In Stock
$1.62 / Unit
View Datasheet →PIC18F26K83-I/SS
✅ Drop-In✓ In Stock
$1.55 / Unit
View Datasheet →PIC18LF26K83-E/SS
✅ Drop-In✓ In Stock
$2.46 / Unit
View Datasheet →PIC18LF26K42-I/SS
✅ Drop-In✓ In Stock
$2.02 / Unit
View Datasheet →PIC18LF26K80T-I/SS
✅ Drop-In✓ In Stock
$3.21 / Unit
View Datasheet →PIC18LF26J53-I/SS
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18LF26K83-I/SS Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC18 8-bit RISC (modified Harvard) |
| Program Memory (Flash) | 64 KB (32K x 16 words) |
| Data SRAM | 4 KB |
| Data EEPROM | 1 KB |
| Maximum CPU Frequency | 64 MHz |
| Operating Voltage Range | 1.8 V to 3.6 V |
| ADC | 12-bit with Computation (ADC2), up to 24 channels |
| DAC | 5-bit + 10-bit |
| Comparators | 3 with selectable reference |
| Timers | Multiple 8/16-bit, SCCP, MCCP, PWM |
| Communication Interfaces | 2x UART, 2x SPI, 2x I2C, 1x CAN 2.0B |
| CAN Module | Yes (CAN 2.0B active) |
| Package | 28-pin SSOP (5.30 mm body) |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +85C (industrial, 'I') |
| MSL Level | 1 |
| RoHS Status | Compliant |
| Lead-Free / Halogen-Free | Yes / Yes (Microchip 'G' rating) |
PIC18LF26K83-I/SS Pin Configuration
| Pin 1 | RA2/AN2 — Analog input 2 / Reference Vref- |
| Pin 2 | RA3/AN3 — Analog input 3 / Reference Vref+ |
| Pin 3 | RA4/AN4 — Analog input 4 |
| Pin 4 | RA5/AN5 — Analog input 5 |
| Pin 5 | RA6/OSC2 — General I/O / Oscillator output |
| Pin 6 | RA7/OSC1 — General I/O / Oscillator input |
| Pin 7 | VDDCORE — Internal core voltage decoupling (connect to VDD via cap) |
| Pin 8 | VSS — Ground reference |
| Pin 9 | RA0/AN0 — Analog input 0 |
| Pin 10 | RA1/AN1 — Analog input 1 |
| Pin 11 | RB0/INT0 — External interrupt 0 / CCP4 |
| Pin 12 | RB1/INT1 — External interrupt 1 / CCP5 |
| Pin 13 | RB2/INT2 — External interrupt 2 |
| Pin 14 | RB3/CANTX — CAN bus transmit (PPS-remappable) |
| Pin 15 | RB4/CANRX — CAN bus receive (PPS-remappable) |
| Pin 16 | RB5/PWM — PWM output / general I/O |
| Pin 17 | RB6/ICSPCLK — ICSP clock / general I/O |
| Pin 18 | RB7/ICSPDAT — ICSP data / general I/O |
| Pin 19 | VSS — Ground reference |
| Pin 20 | VDD — Positive supply voltage (1.8V-3.6V) |
| Pin 21 | RC0/SOSCO — Secondary oscillator output / general I/O |
| Pin 22 | RC1/SOSCI — Secondary oscillator input / general I/O |
| Pin 23 | RC2 — General I/O |
| Pin 24 | RC3 — General I/O |
| Pin 25 | RC4 — General I/O |
| Pin 26 | RC5 — General I/O |
| Pin 27 | RC6 — UART TX / general I/O |
| Pin 28 | RC7 — UART RX / general I/O |
Typical Applications
PIC18LF26K83-I/SS is suitable for 6 applications: Automotive Body Control via CAN, Industrial Sensor Hub with Capacitive Touch, Low-Power IoT Wireless Sensor Node, Portable Medical Peripheral, Battery-Backed Industrial Instrumentation, Smart Home and Building Automation.
Automotive Body Control via CAN
The PIC18LF26K83-I/SS fits automotive body and sensor applications because its integrated CAN 2.0B controller supports 125 kbit/s to 1 Mbit/s bit rates with hardware filtering, and the 1.8V-3.6V Vdd range handles load-dump transient profiles through an external regulator. The 64 KB Flash accommodates the full CANopen or J1939 stack plus application logic. Place the MCU on the body bus with a TJA1050 or TLE7259-3 CAN transceiver; CIP peripherals (ADC2 with CVD, CCP, UART) handle sensors without CPU overhead. Compared to a discrete CAN solution, the on-chip controller saves PCB space and BOM cost.
Recommended
Industrial Sensor Hub with Capacitive Touch
The PIC18LF26K83-I/SS is ideal for industrial HMI and sensor hubs because its 12-bit ADC2 with CVD (Capacitive Voltage Divider) automates touch-button scanning without CPU intervention, freeing the core to run Modbus or CAN protocols. The 64 KB Flash stores a complete touch-and-control firmware image, and the 4 KB SRAM allows simultaneous sensor buffering. Designed in 28-SSOP with wide -40C to +85C industrial temperature range, it tolerates factory-floor environments. Power consumption falls to <1 uA in sleep for battery-backed sensor nodes that wake periodically on capacitive events.
Recommended
Low-Power IoT Wireless Sensor Node
The PIC18LF26K83-I/SS anchors battery-powered IoT sensor nodes because XLP technology delivers sub-1 uA sleep current with full RAM/EEPROM retention, allowing multi-year operation from a CR2032 or 2x AA cells. The 64 KB Flash accommodates an application-level IoT stack, and the 1.8V minimum Vdd supports direct coin-cell operation. PPS remapping lets you route the UART/SPI bus to any I/O for connecting an NRF24 or LoRa module. Wake-on-ADC2 or external interrupt drives the duty cycle; ADC2 oversampling reduces noise on slow analog sensors without external amplifier overhead.
Recommended
Portable Medical Peripheral
The PIC18LF26K83-I/SS fits portable medical peripherals because its low-voltage 1.8V-3.6V operation enables single-cell Li-ion or Li-polymer designs, and the ADC2 12-bit accuracy is sufficient for pulse-oximetry, blood-pressure, or glucose-meter analog front ends. The 64 KB Flash stores FDA-traceable calibration tables, while the 1 KB EEPROM stores patient logs with byte-level endurance. CIP peripherals like the 5-bit DAC and comparators form a complete analog front end with no external op-amps, reducing BOM cost for FDA Class I/II home-health devices.
Recommended
Battery-Backed Industrial Instrumentation
The PIC18LF26K83-I/SS suits battery-backed industrial instrumentation because the 1.8V minimum Vdd preserves real-time-clock accuracy from a single Li-MnO2 cell for years. The 28-SSOP industrial-grade package tolerates -40C to +85C operation, and the 64 KB Flash accommodates full Modbus/Profibus protocol stacks. ADC2 with hardware oversampling lets the MCU average noisy transducer signals (load cells, RTDs) without CPU loading. Two UARTs enable simultaneous Modbus master and slave ports, while the CAN interface handles modern industrial Ethernet bridging when paired with a CAN-Ethernet gateway.
Recommended
Smart Home and Building Automation
The PIC18LF26K83-I/SS works well in smart-home and building-automation hubs because the 1.8V-3.6V range supports direct battery or 3.3V regulated power, and the integrated CAN bus allows connection to building-management sensor networks. The 64 KB Flash and 4 KB SRAM accommodate firmware for HVAC, lighting, and occupancy control with on-board capacitive-touch interfaces via ADC2 CVD. PPS remapping keeps PCB routing flexible when RF shields require isolated signal paths. Sleep current <1 uA supports battery-powered wireless sensor nodes (window/door) that report back over CAN or UART to a central controller.
Recommended
Recommended Products Summary
Engineering reference data for PIC18LF26K83-I/SS — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC18LF25K83-I/SS | PIC18F26K83-I/SS | PIC18LF26K83-E/SS | PIC18LF26K42-I/SS | PIC18LF26K80T-I/SS | PIC18LF26J53-I/SS |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SSOP | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same |
| Flash Memory | 64 KB | 32 KB (-50%) | 64 KB | 64 KB | 64 KB | 64 KB | 64 KB |
| Operating Voltage | 1.8 V to 3.6 V | 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 | 2.15 V to 3.6 V |
| CAN Module | Yes (CAN 2.0B) | Yes (CAN 2.0B) | Yes (CAN 2.0B) | Yes (CAN 2.0B) | No | Yes (CAN 2.0B) | No (USB instead) |
| ADC2 (CVD) | Yes (12-bit + Computation) | Yes (12-bit + Computation) | Yes (12-bit + Computation) | Yes (12-bit + Computation) | Yes (12-bit + Computation) | No (10-bit ADC) | Yes (12-bit + Computation) |
| Operating Temperature | -40C to +85C (industrial) | -40C to +85C | -40C to +85C | -40C to +125C (extended) | -40C to +85C | -40C to +85C | -40C to +85C |
| Core Frequency | 64 MHz max | 64 MHz max | 64 MHz max | 64 MHz max | 64 MHz max | 64 MHz max | 48 MHz max |
Key Differentiators
- Integrated CAN 2.0B with same-package footprint (vs PIC18LF26K42-I/SS)
- ADC2 with Computation offloads touch-sensing CPU (vs PIC18LF26K80T-I/SS)
- 1.8V minimum Vdd for single-cell Li-MnO2 / coin-cell designs (vs PIC18F26K83-I/SS)
Design Notes
Decouple VDD with a 100 nF ceramic capacitor placed within 5 mm of pin 20, and add a 10 uF bulk cap on the same supply rail. The VDDCORE pin (pin 7) requires its own 100 nF decoupling cap; do not tie VDDCORE directly to VDD. For battery-powered XLP designs, switch the main oscillator off in sleep and use the 32 kHz secondary oscillator (SOSC) on RC0/RC1 for RTC. Expected sleep current at 1.8V is well under 1 uA with full RAM retention.
The 28-SSOP package has a 0.65 mm pitch and 5.30 mm body width - typical SMD hand-solderable footprint. Keep analog traces (RA2/RA3 reference pins, ANx inputs) short and shielded from digital switching. Place the CAN bus traces (RB3/RB4) as a matched-length differential pair with 120-ohm characteristic impedance. Ensure the ICSP programming pins RB6/RB7 are accessible; do not place them on top-layer-only signals if in-circuit field updates are required.
Do not apply >3.6V to VDD on the LF variant - the LF core has a lower maximum rating than the PIC18F26K83. Always configure the PPS registers before enabling peripherals, otherwise CAN, UART, or SPI signals will not appear on the expected pins. The ADC2 CVD scan requires manual configuration of the sequence; if you see noise on touch readings, increase the ADC2 acquisition time or average more samples per scan.
Compliance Information
RoHS and REACH compliant per Microchip product page; lead-free and halogen-free rated. The 'I' temperature suffix indicates industrial -40C to +85C, not AEC-Q100 automotive qualification - consider PIC18LF26K83-E/SS for extended or automotive-grade designs.
