PIC18LF26K83-I/ML - 64KB Flash 8-bit MCU w/ CAN | Microchip
MPN: PIC18LF26K83-I/ML ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.4 | $3.40 |
| 10 | $2.98 | $29.80 |
| 100 | $2.55 | $255.00 |
| 500 | $2.18 | $1,090.00 |
| 1,000 | $1.92 | $1,920.00 |
PIC18LF26K83-I/ML Overview
What is a PIC18 XLP microcontroller? The PIC18 family is Microchip's high-performance 8-bit microcontroller line based on an enhanced RISC architecture, while the XLP (eXtreme Low Power) designation indicates sub-uA sleep current and nanoWatt technology for battery-friendly designs. Within the broader hierarchy, PIC18 sits below 16-bit PIC24/dsPIC and 32-bit PIC32 families, but above baseline PIC10/12/16 parts in both performance and peripheral integration.
Key features include a 64 MHz internal oscillator, 7 timers, 2 analog comparators with FVR, a 2-channel DMA controller, and 25-channel 12-bit ADC2. The device supports core independent peripherals (CIPs) such as the Hardware Limit Timer, CLC, NCO, PWM and Complementary Waveform Generator, enabling complex functions without CPU intervention.
The PIC18LF26K83 family architecture separates the CAN module from the ADC2 and DMA subsystems via independent interrupt vectors, allowing deterministic real-time response. It is built on an enhanced Harvard architecture with a 16-bit instruction word and 8-bit data path, supporting hardware multiply and a vectored interrupt controller with prioritized interrupts for deterministic latency.
Typical applications include automotive body and chassis ECUs, industrial CAN nodes, sensor transducers with touch interfaces, building automation, low-power remote sensing, and medical devices where its XLP standby current extends battery life. The wide 1.8V to 5.5V supply range suits both 3.3V and 5V system designs.
When designing with this device, place decoupling capacitors within 2 mm of each VDD/VSS pair, route the CAN bus with 120 ohm characteristic impedance, and reserve an unused GPIO for firmware-driven PCB identification or test-point access during qualification.
This page synthesizes distributor pricing, drop-in alternatives and practical design notes not found in the manufacturer datasheet alone, including a same-package upgrade path to PIC18F26K83 (5V FuSa variant) and the lower-pin-count PIC18LF25K83 sibling.
Drop-in alternatives for PIC18LF26K83-I/ML — 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/ML (same form factor and footprint) — differing in ADC, Package, Program Memory (Flash), Family, I/O Pins.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC18F26K83-I/ML
✅ Drop-In✓ In Stock
$2.19 / Unit
View Datasheet →PIC18LF26K83-E/ML
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18LF25K83-I/ML
✅ Drop-In✓ In Stock
$1.86 / Unit
View Datasheet →PIC18LF26K83-I/MX
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18LF26K42-I/ML
✅ Drop-In✓ In Stock
$2.62 / Unit
View Datasheet →PIC18LF26K83-I/ML Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC18 (8-bit enhanced RISC, Harvard) |
| CPU Speed | 64 MHz maximum (16 MIPS) |
| Program Memory (Flash) | 64 KB (32K x 16) |
| SRAM | 4 KB |
| EEPROM | 1 KB |
| Supply Voltage (VDD) | 1.8 V to 5.5 V |
| Operating Temperature | -40C to +85C (Industrial, -I suffix) |
| Package | 28-pin QFN (6x6 mm), designated /ML |
| Mounting Type | Surface Mount (QFN) |
| ADC | 12-bit ADC2, up to 25 channels with Computation (CVD, averaging, filtering, oversampling) |
| Communication Interfaces | 1x CAN 2.0B, 2x I2C, 2x SPI, 1x EUSART (LIN-capable) |
| Timers | 7 (Timer0-5, Timer6) |
| Comparators | 2 with FVR (Fixed Voltage Reference) |
| DMA Channels | 2 |
| Core Independent Peripherals | CLC, NCO, PWM, Complementary Waveform Generator, Hardware Limit Timer |
| MSL Level | 3 (per JEDEC J-STD-020) |
| RoHS Status | Compliant |
PIC18LF26K83-I/ML Pin Configuration
| Pin 1 | VDD — Positive supply voltage (1.8V to 5.5V) |
| Pin 2 | RA5 — Port A bit 5 / GPIO |
| Pin 3 | RA4 — Port A bit 4 / GPIO |
| Pin 4 | RA3 — Port A bit 3 / GPIO |
| Pin 5 | RC5 — Port C bit 5 / GPIO |
| Pin 6 | RC4 — Port C bit 4 / GPIO |
| Pin 7 | RC3 — Port C bit 3 / GPIO / SCL |
| Pin 8 | RC2 — Port C bit 2 / GPIO |
| Pin 9 | RC1 — Port C bit 1 / GPIO |
| Pin 10 | RC0 — Port C bit 0 / GPIO |
| Pin 11 | VSS — Ground reference |
| Pin 12 | RA2 — Port A bit 2 / GPIO |
| Pin 13 | RA1 — Port A bit 1 / GPIO / ICSPCLK |
| Pin 14 | RA0 — Port A bit 0 / GPIO / ICSPDAT |
| Pin 15 | RB7 — Port B bit 7 / GPIO |
| Pin 16 | RB6 — Port B bit 6 / GPIO / ICSP |
| Pin 17 | RB5 — Port B bit 5 / GPIO |
| Pin 18 | RB4 — Port B bit 4 / GPIO |
| Pin 19 | RB3 — Port B bit 3 / GPIO |
| Pin 20 | RB2 — Port B bit 2 / GPIO |
| Pin 21 | RB1 — Port B bit 1 / GPIO |
| Pin 22 | RB0 — Port B bit 0 / GPIO / INT0 |
| Pin 23 | VSS — Ground reference (additional) |
| Pin 24 | VDD — Positive supply (additional) |
| Pin 25 | RC7 — Port C bit 7 / GPIO / CANRX |
| Pin 26 | RC6 — Port C bit 6 / GPIO / CANTX |
| Pin 27 | RA7 — Port A bit 7 / GPIO / OSC1 |
| Pin 28 | RA6 — Port A bit 6 / GPIO / OSC2 |
| Pin 29 | EP — Exposed thermal pad - connect to VSS (ground) |
Typical Applications
PIC18LF26K83-I/ML is suitable for 6 applications: Automotive CAN Body Control Module, Industrial Sensor Transducer, Capacitive Touch User Interface, Building Automation HVAC Controller, Battery-Powered Remote Sensor Node, Medical Device Interface Board.
Automotive CAN Body Control Module
The PIC18LF26K83-I/ML is well matched to automotive body CAN nodes because it integrates a hardware CAN 2.0B controller, 64 KB Flash and 12-bit ADC2 in a single 28-QFN. The 1.8-5.5V supply range allows direct connection to 5V CAN transceivers such as the MCP2551 without level shifting. At 64 MHz the device finishes CAN frame processing ahead of the 1 Mbit/s bit time, leaving headroom for diagnostic UDS handlers. AEC-Q100 equivalent parts in the same family support under-hood and chassis control where vibration and temperature extremes apply.
Recommended
Industrial Sensor Transducer
The PIC18LF26K83-I/ML fits industrial sensor designs where a microcontroller must digitize multiple analog channels while running Modbus or CANopen on the bus. Its 12-bit ADC2 with computation engines (averaging, oversampling, burst mode) automates signal conditioning without CPU load, while the 2-channel DMA offloads ADC buffers and UART FIFOs. The wide 1.8-5.5V range tolerates 24V industrial bus rails after a buck regulator. XLP nanoWatt sleep currents below 1 uA enable battery or harvested-power transducer nodes that sleep most of the time.
Recommended
Capacitive Touch User Interface
The PIC18LF26K83-I/ML is ideal for capacitive touch panels because the ADC2 hardware engine automates CVD scanning across up to 25 channels with averaging and oversampling, freeing the CPU from interrupt-driven scanning. The CLC and NCO peripherals can synthesize guard-ring signals without software intervention, reducing BOM cost. With the mTouch library a 12-button keypad plus slider runs in under 30 percent Flash, leaving room for application UI logic. Industrial -40C to +85C operation handles outdoor kiosks and appliance HMIs.
Recommended
Building Automation HVAC Controller
HVAC and building automation controllers benefit from the PIC18LF26K83-I/ML combination of CAN bus connectivity, multiple communication peripherals and ADC2 for analog sensor inputs. Its core independent peripherals - CLC, PWM and Hardware Limit Timer - allow valve and damper control loops to run without CPU load. EUSART with LIN support lets the same device talk to damper actuators, while I2C connects local temperature/humidity sensors. The 28-QFN package fits behind wall plates and inside equipment housings where board space is constrained.
Recommended
Battery-Powered Remote Sensor Node
The PIC18LF26K83-I/ML supports battery-powered sensor nodes because of its XLP nanoWatt technology with sub-uA sleep current and <100 nA RTCC retention. In sleep mode with RTCC running the part draws less than the battery self-discharge, enabling multi-year coin-cell operation. Wake on interrupt from Timer1, INT pins or ADC2 threshold detection allows scheduled measurement and event-driven responses. The 1.8V minimum supply matches primary LiSOCl2 and LiMnO2 chemistries without boost conversion, improving overall efficiency.
Recommended
Medical Device Interface Board
The PIC18LF26K83-I/ML is well suited for medical interface boards requiring multiple serial channels, accurate ADC and CAN connectivity. Its 12-bit ADC2 with oversampling achieves effective resolution above 14 bits when digitizing ECG, SpO2 and temperature sensor outputs. Dual I2C allows simultaneous use of a display and a sensor front-end while the CAN bus connects to the host monitoring system. IEC 60730 Class B diagnostic libraries are available from Microchip to support functional safety requirements for medical and household appliances.
Recommended
Recommended Products Summary
Engineering reference data for PIC18LF26K83-I/ML — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC18F26K83-I/ML | PIC18LF26K83-E/ML | PIC18LF25K83-I/ML | PIC18LF26K83-I/MX | PIC18LF26K42-I/ML |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-QFN (6x6 mm) | 28-QFN (6x6 mm) - same | 28-QFN (6x6 mm) - same | 28-QFN (6x6 mm) - same | 28-QFN (6x6 mm) - same | 28-QFN (6x6 mm) - same |
| Flash Memory | 64 KB | 64 KB | 64 KB | 32 KB | 64 KB | 64 KB |
| SRAM | 4 KB | 4 KB | 4 KB | 2 KB | 4 KB | 4 KB |
| EEPROM | 1 KB | 1 KB | 1 KB | 1 KB | 1 KB | 1 KB |
| Supply Voltage | 1.8V to 5.5V | 2.3V to 5.5V | 1.8V to 5.5V | 1.8V to 5.5V | 1.8V to 5.5V | 1.8V to 5.5V |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +125C | -40C to +85C | -40C to +85C | -40C to +85C |
| CAN Module | Yes (CAN 2.0B) | Yes (CAN 2.0B) | Yes (CAN 2.0B) | Yes (CAN 2.0B) | Yes (CAN 2.0B) | No |
| Functional Safety (FuSa) | No | Yes | No | No | No | No |
Key Differentiators
- Larger Flash than PIC18LF25K83 sibling (vs PIC18LF25K83-I/ML)
- 5V FuSa upgrade path available (vs PIC18F26K83-I/ML)
- CAN 2.0B vs newer K42 family (vs PIC18LF26K42-I/ML)
- Extended temperature option (vs PIC18LF26K83-E/ML)
Design Notes
Estimated: at 64 MHz CPU clock and full peripheral activity, core current is approximately 15 mA at 3.3V. Add a 100 nF ceramic bypass within 2 mm of each VDD/VSS pair plus a 10 uF bulk capacitor near the supply pin to suppress transient dips. For CAN bus nodes add a TVS diode (PESD1CAN) on the bus lines to meet IEC 61000-4-2 ESD. Use an MCP1700 LDO if the upstream rail exceeds 5.5V, since the absolute maximum on VDD is 6.5V.
Estimated: with VDD = 3.3V, CPU active at 64 MHz and all peripherals enabled, the part dissipates around 50 mW which produces a negligible junction temperature rise in the 28-QFN package (theta_JA approximately 35 C/W on a 4-layer JEDEC test board). Solder the exposed thermal pad (pin 29) to a continuous ground copper pour of at least 25 mm squared for optimal thermal spreading. Avoid placing heat-generating components within 3 mm of the package to keep the local ambient gradient small.
Route the CAN bus with 120 ohm differential impedance using matched length traces; keep total stub length below 5 mm. Place the CAN transceiver (MCP2551) within 10 mm of the PIC18LF26K83-I/ML CANTX and CANRX pins to avoid reflections. Add a 120 ohm termination resistor at each end of the bus; do not place stubs beyond the termination. Use a 4-layer stackup with continuous ground plane under the QFN exposed pad for best EMC performance.
Do not leave the ICSPDAT/ICSPCLK pins floating during normal operation; Microchip recommends 4.7 kohm pull-ups on PGECx/PGEDx for in-circuit serial programming. If the ADC2 CVD feature is used for capacitive touch, ensure the guard-ring trace is driven by an independent peripheral (CLC or PWM) and not a software-toggled GPIO to avoid scan jitter. Verify the configuration bits using the MCC-generated header to prevent accidental code protection.
Compliance Information
RoHS and lead-free confirmed by Microchip product page. Halogen-free status consult Microchip substance declaration. Standard -I grade is not AEC-Q100 qualified; AEC-Q100 grades are available separately in the same family. REACH compliance per Microchip statement.
