PIC18F26K83-I/MX - 64KB Flash 8-bit MCU with CAN, 28-UQFN | Microchip
MPN: PIC18F26K83-I/MX ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.94 | $2.94 |
| 10 | $2.65 | $26.50 |
| 100 | $2.35 | $235.00 |
| 500 | $2.05 | $1,025.00 |
| 1,000 | $1.85 | $1,850.00 |
| 2,500 | $1.65 | $4,125.00 |
PIC18F26K83-I/MX Overview
An 8-bit microcontroller (MCU) is a programmable system-on-chip that integrates a CPU core, non-volatile program memory (Flash), working RAM, and a rich set of peripherals (ADC, timers, communication ports) onto a single die. MCUs are the basic building block of every embedded system - from simple sensor nodes to industrial controllers. The PIC18 family sits in Microchip's mainstream 8-bit portfolio, positioned above baseline PIC10/12/16 parts by offering higher MIPS, more memory, CIPs (Core Independent Peripherals), and richer communication peripherals.
Key features of the PIC18F26K83 include a 12-bit ADC with Computation (ADC²) supporting Capacitive Voltage Divider (CVD) for advanced touch sensing, averaging, filtering, and oversampling; a 5-bit DAC; multiple Core Independent Peripherals such as CWG, CCP, PWM, and NCO; and an integrated CAN module for automotive and industrial networking. The device supports up to 64 MHz operation from a 2.3V-5.5V supply, with XLP technology providing sub-microamp sleep currents for battery-powered applications.
Architecturally, the part uses an enhanced mid-range PIC18 CPU with a hardware multiplier, indexed addressing, and a 31-level stack, allowing efficient C compilation through the MPLAB XC8 toolchain. The 28-UQFN package is the smallest footprint option in this family, with a 6x6 mm body and 0.6 mm pitch, suiting space-constrained designs that still need full peripheral integration.
Typical applications include automotive body and comfort modules, industrial sensor nodes with CAN bus, low-power IoT edge devices, capacitive touch human-machine interfaces, and functional-safety systems where the FuSa documentation aids certification. The CAN bus and 12-bit ADC² make it especially strong in distributed sensor networks where deterministic low-latency conversion and reliable communication matter.
When designing in this part, plan your I/O assignments carefully against the 28-pin budget: many peripherals are multiplexed onto shared pins, and CAN, the ADC, and PWM share I/O. Always consult the device pinout table before locking in the PCB layout, and provide adequate decoupling on VDD/VSS pairs near each pin cluster.
This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the manufacturer datasheet alone - giving procurement and embedded engineers a faster path to a working BOM.
Drop-in alternatives for PIC18F26K83-I/MX — 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 PIC18F26K83-I/MX (same form factor and footprint) — differing in ADC, Package, Core, Operating Temperature, Timers.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC18F26K83-E/MX
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18F26K83T-I/MX
✅ Drop-In✓ In Stock
$2.19 / Unit
View Datasheet →PIC18F25K83T-I/MX
✅ Drop-In✓ In Stock
$1.82 / Unit
View Datasheet →PIC18F26K83-I/MX Maximum Ratings & Electrical Characteristics
| Core | PIC18 8-bit enhanced mid-range |
| CPU Architecture | 8-bit Harvard |
| Maximum CPU Frequency | 64 MHz |
| Program Memory (Flash) | 64 KB (32K x 16) |
| SRAM | 4 KB |
| Supply Voltage (VDD) | 2.3 V to 5.5 V |
| ADC | 12-bit ADC with Computation (ADC²), CVD support |
| DAC | 5-bit DAC |
| CAN Module | 1x CAN 2.0B |
| Timers | Multiple 8-bit and 16-bit timers |
| PWM | Yes (via CCP/PWM peripherals) |
| Communication | CAN, UART, SPI, I2C |
| Operating Temperature | -40C to +85C (Industrial, -I suffix) |
| Package | 28-UQFN (6x6 mm), MX suffix |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| Functional Safety (FuSa) | Yes - documentation available |
| Low-Power Technology | XLP (eXtreme Low Power) |
PIC18F26K83-I/MX Pin Configuration
| Pin 1 | RA0/AN0/CVDTX — Port A bit 0 / Analog input 0 / CVD TX |
| Pin 2 | RA1/AN1 — Port A bit 1 / Analog input 1 |
| Pin 3 | RA2/AN2 — Port A bit 2 / Analog input 2 |
| Pin 4 | RA3/AN3 — Port A bit 3 / Analog input 3 |
| Pin 5 | RA4/AN4 — Port A bit 4 / Analog input 4 |
| Pin 6 | RA5/AN5 — Port A bit 5 / Analog input 5 |
| Pin 7 | RA6/AN6 — Port A bit 6 / Analog input 6 |
| Pin 8 | RA7/AN7 — Port A bit 7 / Analog input 7 |
| Pin 9 | VSS — Ground reference |
| Pin 10 | VDD — Positive supply (2.3V to 5.5V) |
| Pin 11 | RB0/INT — Port B bit 0 / External interrupt |
| Pin 12 | RB1 — Port B bit 1 |
| Pin 13 | RB2 — Port B bit 2 |
| Pin 14 | RB3 — Port B bit 3 |
| Pin 15 | RB4 — Port B bit 4 |
| Pin 16 | RB5 — Port B bit 5 |
| Pin 17 | RB6/PGC — Port B bit 6 / ICSP clock |
| Pin 18 | RB7/PGD — Port B bit 7 / ICSP data |
| Pin 19 | RC0 — Port C bit 0 |
| Pin 20 | RC1 — Port C bit 1 |
| Pin 21 | RC2 — Port C bit 2 |
| Pin 22 | RC3 — Port C bit 3 |
| Pin 23 | RC4 — Port C bit 4 |
| Pin 24 | RC5 — Port C bit 5 |
| Pin 25 | RC6 — Port C bit 6 |
| Pin 26 | RC7 — Port C bit 7 |
| Pin 27 | VSS — Ground reference (second pad) |
| Pin 28 | VDD — Positive supply (second pad) |
Typical Applications
PIC18F26K83-I/MX is suitable for 6 applications: Automotive Body and Comfort Modules, Industrial CAN Sensor Nodes, Capacitive Touch HMI, Low-Power IoT Edge Devices, Functional Safety Subsystems, Motor Control and BLDC Drivers.
Automotive Body and Comfort Modules
The PIC18F26K83-I/MX is well suited to automotive body controllers (door modules, seat controllers, mirror adjusters, lighting nodes) where its integrated CAN 2.0B controller removes the need for an external transceiver MCU. The 64 MHz PIC18 core executes CAN interrupt routines in under a few microseconds, while the on-chip 12-bit ADC² handles temperature, current sensing, and Hall-effect position feedback for brushed DC loads. Functional Safety (FuSa) documentation assists ISO 26262 qualification at the system level. At 1.65 USD at qty 2500, the part is cost-competitive against 32-bit alternatives for body-domain ECUs that need deterministic CAN latency without graphical HMI overhead.
Recommended
Industrial CAN Sensor Nodes
Distributed industrial sensor networks on CANopen or DeviceNet rely on the PIC18F26K83-I/MX for its combination of CAN hardware, 12-bit ADC², and XLP low-power sleep modes. The ADC² with Capacitive Voltage Divider (CVD) supports capacitive proximity and level sensors with hardware averaging offloaded from the CPU. With sleep currents below 1 microamp (XLP mode), battery-powered wireless-CAN gateways can run for years on a single primary cell. The 4 KB SRAM comfortably holds CANopen OD tables plus a small application stack. This part is widely deployed in factory-automation analog-input modules.
Recommended
Capacitive Touch HMI
The PIC18F26K83-I/MX's ADC² with built-in CVD (Capacitive Voltage Divider) automates capacitive touch sensing on up to 28 channels, making it ideal for low-cost HMI panels replacing mechanical buttons in appliances, lighting controls, and industrial front panels. Hardware oversampling and filtering run autonomously, freeing the 64 MHz core for communication and housekeeping. The on-chip 5-bit DAC can drive audio or LED brightness for feedback. Combined with XLP technology, battery-powered remote controls with touch surfaces operate for years on coin cells, and Functional Safety (FuSa) documentation supports white-goods IEC 60730 class-B certification paths.
Recommended
Low-Power IoT Edge Devices
Battery-powered IoT edge sensors benefit from the PIC18F26K83-I/MX's XLP nanoWatt technology, which delivers sub-microamp sleep currents with RTC and brown-out-reset retention. The 64 KB Flash holds TLS-style lightweight communication stacks (MQTT-SN, CoAP) or LoRaWAN regional parameter tables, while the 4 KB SRAM buffers sensor frames before transmission. ADC² with hardware averaging minimizes CPU wake-ups for periodic environmental measurements. Operating from 2.3V to 5.5V, the part runs directly from a 3V coin cell or a 3.3V regulated supply, simplifying power-tree design for remote sensor nodes.
Recommended
Functional Safety Subsystems
The PIC18F26K83 family ships with Functional Safety (FuSa) documentation including FMEDA, failure-rate data, and diagnostic coverage recommendations, enabling integration into safety-related subsystems targeting IEC 61508 SIL 2 and IEC 60730 Class B. Typical deployments include household appliance controllers (washing machines, dishwashers, ovens), HVAC actuators, and motor-control safety islands. The 12-bit ADC² with windowed comparison and the dedicated CRC engine support redundant diagnostic paths, while the 64 MHz core provides margin for safety-loop scheduling. Pairing with the PIC18F26K83-E/MX variant supports -40C to +125C operation behind the appliance bulkhead.
Recommended
Motor Control and BLDC Drivers
The PIC18F26K83-I/MX drives small BLDC or brushed-DC motors in fans, pumps, and appliance blowers through its CCP/PWM peripherals and the on-chip CWG (Complementary Waveform Generator) for dead-band control. The 12-bit ADC² samples back-EMF or current sense with hardware averaging, while dedicated CIPs handle timing-critical tasks in hardware without CPU jitter. The CAN bus allows synchronization across multi-motor systems (HVAC, automotive blower clusters). The 28-UQFN package (6x6 mm) fits inside compact inverter stages where traditional 28-SSO footprints would not clear adjacent components.
Recommended
Recommended Products Summary
Engineering reference data for PIC18F26K83-I/MX — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC18F26K83-E/MX | PIC18F26K83T-I/MX | PIC18F25K83T-I/MX |
|---|---|---|---|---|
| Package | 28-UQFN (6x6 mm, MX) | 28-UQFN (6x6 mm, MX) - same | 28-UQFN (6x6 mm, MX) - same | 28-UQFN (6x6 mm, MX) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 64 KB | 64 KB | 64 KB | 32 KB (-50%) |
| SRAM | 4 KB | 4 KB | 4 KB | 2 KB (-50%) |
| Maximum CPU Frequency | 64 MHz | 64 MHz | 64 MHz | 64 MHz |
| CAN Module | Yes (CAN 2.0B) | Yes (CAN 2.0B) | Yes (CAN 2.0B) | Yes (CAN 2.0B) |
| ADC | 12-bit ADC² with CVD | 12-bit ADC² with CVD | 12-bit ADC² with CVD | 12-bit ADC² with CVD |
| Operating Temperature | -40C to +85C (Industrial, -I) | -40C to +125C (Extended, -E) | -40C to +85C (Industrial, -I) | -40C to +85C (Industrial, -I) |
| Functional Safety (FuSa) | Yes - documented | Yes - documented | Yes - documented | Yes - documented |
Key Differentiators
- Integrated CAN 2.0B controller with FuSa documentation (vs PIC18F26K42-I/SS)
- Largest Flash in the 28-pin K83 UQFN family (vs PIC18F25K83T-I/MX)
- ADC² with built-in Capacitive Voltage Divider (CVD) (vs PIC18F26K80-I/SO)
Design Notes
The PIC18F26K83-I/MX operates from 2.3V to 5.5V with XLP nanoWatt sleep currents below 1 microamp. For CAN bus applications, provide a regulated 5V rail capable of sourcing the CAN transceiver burst current (typically 70 mA during dominant-bit transmission). Decouple each VDD/VSS pair with a 100 nF ceramic cap placed within 3 mm of the package pad, plus a bulk 1-10 uF tantalum or ceramic cap on the main VDD. Avoid routing the CAN bus traces across clock or PWM edges to minimize radiated emissions.
The 28-UQFN (MX) package has a 6x6 mm body with 0.6 mm pitch and an exposed thermal pad. The thermal pad MUST be soldered to a copper pour of at least the same area, stitched with multiple vias to the inner ground plane, both for thermal dissipation and for mechanical robustness. Pin 1 is identified by a dot on the top-side silk-screen. Leave clearance under the ICSP pins (RB6/RB7) for test-pad access during firmware development.
Three pitfalls to avoid: (1) Do not assume all 28 pins are general-purpose I/O - many are multiplexed with analog inputs, the CVD charge/discharge pins, and the ICSP clock/data. Consult the pin allocation table in the datasheet before locking PCB layout. (2) The -I suffix denotes industrial -40C to +85C; for automotive under-hood or extended-temperature use, choose the -E or -H variants. (3) The ADC² CVD mode requires a specific charge/discharge pin assignment - using incorrect pins will silently disable the touch-sensing feature.
Route the CANH/CANL differential pair as a 100-ohm impedance-controlled pair, length-matched within 5 mm, and keep a ground reference plane beneath them. The CAN bus stub length should not exceed 1/10 of the signal rise time. Place the MCP2551 or equivalent transceiver within 20 mm of the MCU CAN pins to avoid stubs. For ADC² CVD touch traces, route them away from switching noise sources and keep them short with adjacent ground guarding on both sides.
Compliance Information
RoHS and REACH compliant per Microchip product page. Not AEC-Q100 qualified as -I industrial grade; AEC-Q100 grade-0/1 parts use the -E or -H suffix. FuSa (Functional Safety) documentation available per Microchip PIC18F25/26K83 family datasheet (DS40001943).
