PIC18F26Q84-E/SO - 8-bit MCU, 64KB Flash, CAN FD, 28-SOIC
MPN: PIC18F26Q84-E/SO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.66 | $2.66 |
| 10 | $2.4 | $24.00 |
| 100 | $2.13 | $213.00 |
| 500 | $1.91 | $955.00 |
| 1,000 | $1.7 | $1,700.00 |
PIC18F26Q84-E/SO Overview
What is a PIC18-Q84 microcontroller? The PIC18-Q84 family is part of Microchip's 8-bit PIC microcontroller portfolio, combining Core Independent Peripherals (CIPs) with CAN FD connectivity for automotive and industrial applications. These cost-optimized MCUs include time-saving CIPs in 28/40/44/48-pin packages, sit within the broader PIC18 family of 8-bit microcontrollers, and address the category of small-footprint, low-power embedded controllers for sensor and actuator networks.
Key features include 64 KB Flash program memory, 4 KB SRAM, 1 KB EEPROM, a 12-bit differential ADC with Computation, up to six PWM channels, two UART, two SPI, two I2C, two CAN FD, and an integrated math accelerator for sensor math pipelines. The device operates from 2.3V to 5.5V and is qualified for the -40C to +125C extended industrial temperature range, supporting harsh-environment deployments.
The PIC18F26Q84 architecture pairs a Harvard RISC CPU with a rich CIP block, allowing hardware-driven peripheral actions (e.g., ADC-triggered PWM, timer-triggered ADC) that free the core for higher-level tasks. This CIP-based design yields deterministic latency and reduced firmware complexity compared with CPU-driven interrupt architectures, while the on-chip CAN FD peripheral brings automotive-grade bus bandwidth for sensor and actuator networks.
Typical applications include CAN-based sensor nodes, automotive body and chassis ECUs, industrial automation controllers, building automation gateways, and battery management systems. The wide temperature range and CAN FD make it especially well suited to vehicle networks and factory-floor control loops requiring deterministic, real-time response.
Design consideration: when using CAN FD, ensure that the bit-time configuration matches the chosen CAN transceiver and bus topology; for 28-pin SOIC layouts, dedicate adequate copper to the exposed thermal pad area to keep junction temperature within range at full CPU speed. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for PIC18F26Q84-E/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 PIC18F26Q84-E/SO (same form factor and footprint) — differing in Package, Program Memory (Flash), ADC, Core Architecture, MSL Level.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC18F26Q84-I/SO
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$2.65 / Unit
View Datasheet →PIC18F46Q84-E/SO
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC18F26K83-I/SO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18F26K80-I/SO
✅ Drop-In✓ In Stock
$2.87 / Unit
View Datasheet →PIC18F26Q84-E/SO Maximum Ratings & Electrical Characteristics
| Core | PIC18 8-bit RISC |
| CPU Speed | 64 MHz |
| Program Memory (Flash) | 64 KB |
| SRAM | 4 KB |
| EEPROM | 1 KB |
| Operating Voltage | 2.3 V to 5.5 V |
| Operating Temperature | -40C to +125C (Extended, -E suffix) |
| Package | 28-pin SOIC (SO, wide-body) |
| Mounting Type | Surface Mount |
| ADC | 12-bit differential with Computation |
| CAN FD | 2 channels |
| UART | 2 channels |
| SPI | 2 channels |
| I2C | 2 channels |
| PWM Channels | Up to 6 (16-bit) |
| Core Independent Peripherals (CIPs) | CWG, CCP, DSM, NCO, math accelerator, high-speed comparator |
| MSL Level | 3 (168 hours) |
| RoHS Status | Compliant |
PIC18F26Q84-E/SO Pin Configuration
| Pin 1 | MCLR — Master Clear (Reset) input, active low |
| Pin 2 | RA0 — Analog/Digital I/O; ICDDAT |
| Pin 3 | RA1 — Analog/Digital I/O; ICDCLK |
| Pin 4 | RA2 — Analog/Digital I/O |
| Pin 5 | RA3 — Analog/Digital I/O |
| Pin 6 | RA4 — Analog/Digital I/O |
| Pin 7 | RA5 — Analog/Digital I/O |
| Pin 8 | RA6 — Analog/Digital I/O; OSCO |
| Pin 9 | RA7 — Analog/Digital I/O; OSCI |
| Pin 10 | VSS — Ground reference |
| Pin 11 | RB0 — Digital I/O; CANFDTX1 (CAN FD output) |
| Pin 12 | RB1 — Digital I/O; CANFDRX1 (CAN FD input) |
| Pin 13 | RB2 — Digital I/O; CANFDTX2 (CAN FD output) |
| Pin 14 | RB3 — Digital I/O; CANFDRX2 (CAN FD input) |
| Pin 15 | RB4 — Digital I/O |
| Pin 16 | RB5 — Digital I/O |
| Pin 17 | RB6 — Digital I/O; ICSPCLK |
| Pin 18 | RB7 — Digital I/O; ICSPDAT |
| Pin 19 | VSS — Ground reference |
| Pin 20 | VDD — Positive supply (2.3V to 5.5V) |
| Pin 21 | RC0 — Analog/Digital I/O |
| Pin 22 | RC1 — Analog/Digital I/O |
| Pin 23 | RC2 — Analog/Digital I/O |
| Pin 24 | RC3 — Analog/Digital I/O |
| Pin 25 | RC4 — Analog/Digital I/O |
| Pin 26 | RC5 — Analog/Digital I/O |
| Pin 27 | RC6 — Analog/Digital I/O; TX1 (UART) |
| Pin 28 | RC7 — Analog/Digital I/O; RX1 (UART) |
Typical Applications
PIC18F26Q84-E/SO is suitable for 7 applications: CAN FD Sensor Node, Automotive Body Control Module, Industrial Automation Controller, Building Automation Gateway, Battery Management System Slave, Smart LED Lighting Controller, Portable Medical Sensor Hub.
CAN FD Sensor Node
The PIC18F26Q84-E/SO is well-suited for CAN FD sensor nodes in automotive and industrial networks because of its two integrated CAN FD controllers running up to 5 Mbps in the data phase. The 64 KB Flash and 4 KB SRAM comfortably hold a CANopen or J1939 stack, while the math accelerator executes sensor math pipelines without CPU intervention. Placed as the bridge between a sensor front-end and the bus, this MCU delivers deterministic latency and reduces the bus master workload. Unlike legacy ECAN parts, the Q84's CAN FD offers higher payload and shorter frame latency, trading protocol complexity for bandwidth headroom.
Recommended
Automotive Body Control Module
The PIC18F26Q84-E/SO fits automotive body control modules where multiple LIN/CAN peripherals and PWM channels drive lighting, mirror, and seat actuators. The CIP set (CWG, CCP, DSM, NCO) handles hardware-triggered PWM and complementary outputs without CPU load, freeing the core for higher-level control logic. Operating from 2.3V to 5.5V and -40C to +125C extended temperature, the device survives under-hood thermal stress and 12V battery transients with proper regulation. Compared with discrete logic solutions, this MCU consolidates timers, ADC, and bus controllers into a single SOIC-28 footprint.
Recommended
Industrial Automation Controller
The PIC18F26Q84-E/SO is appropriate for industrial PLC and sensor-hub designs where deterministic, hardware-driven peripheral behavior is required. The 12-bit differential ADC with computation performs oversampling and averaging in hardware, yielding noise-immune measurements for thermocouple and bridge sensors. Dual UART and dual I2C support multiple fieldbus masters or sensor chains in parallel, while the math accelerator computes PID loops and filtering without burdening the core. Placed in a factory-floor node, the device outperforms general-purpose MCUs by offloading routine CIP tasks to silicon.
Recommended
Building Automation Gateway
The PIC18F26Q84-E/SO serves as a building-automation sub-gateway bridging BACnet/Modbus networks with sensor clusters over SPI or UART. With 64 KB Flash and dual CAN FD ports, the MCU aggregates multiple HVAC, lighting, and access-control nodes while exposing high-bandwidth CAN FD to a higher-tier controller. The Core Independent Peripherals handle sensor polling and PWM actuator control autonomously, leaving the core free for protocol translation. Compared with 32-bit ARM alternatives, this 8-bit PIC delivers sufficient performance at lower BOM cost for sub-gateway roles.
Recommended
Battery Management System Slave
The PIC18F26Q84-E/SO is suitable as a battery-management slave controller for cell monitoring and balancing in 12V to 48V packs. Its 12-bit differential ADC measures individual cell voltages with hardware averaging, while its PWM outputs drive balancing FETs with programmable dead time. The wide 2.3V to 5.5V supply range supports direct operation from cell-tap voltage dividers or local regulation, and the extended -40C to +125C temperature range handles under-hood or outdoor packs. Compared with discrete monitor ICs, this MCU adds CAN FD reporting without a dedicated bus controller.
Recommended
Smart LED Lighting Controller
The PIC18F26Q84-E/SO enables smart LED lighting controllers where multiple PWM channels drive RGBW strings with high resolution and low EMI. The CWG peripheral generates complementary waveforms with dead-band control, ideal for half-bridge LED driver stages, while the DSM modulates timing-critical signals in hardware. CAN FD connectivity supports modern automotive lighting buses such as CAN FD-based pixel-light architectures; UART/SPI ports accept DMX or wireless-module commands. Unlike software-only PWM, hardware-driven CIPs deliver flicker-free dimming even under high CPU load.
Recommended
Portable Medical Sensor Hub
The PIC18F26Q84-E/SO fits portable medical sensor hubs where low power, deterministic timing, and reliable peripherals matter more than raw CPU speed. The 12-bit differential ADC with hardware computation supports precise biosensor measurements (pulse oximetry, ECG, temperature), while the math accelerator executes sensor fusion without burdening the core. The SOIC-28 package simplifies hand-soldering for prototyping, and the wide supply range enables direct Li-ion cell operation through a simple LDO. Compared with 32-bit alternatives, this MCU reduces BOM cost and firmware complexity for low-rate medical telemetry.
Recommended
Recommended Products Summary
Engineering reference data for PIC18F26Q84-E/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC18F26Q84-I/SO | PIC18F46Q84-E/SO | PIC18F26K83-I/SO | PIC18F26K80-I/SO |
|---|---|---|---|---|---|
| Package | SOIC-28 (SO) | SOIC-28 (SO) - same | SOIC-28 (SO) - same | SOIC-28 (SO) - same | SOIC-28 (SO) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| CAN FD | 2 channels | 2 channels | 2 channels | ECAN only (no FD) | ECAN only (no FD) |
| CPU Speed | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz |
| Flash Memory | 64 KB | 64 KB | 64 KB | 64 KB | 64 KB |
| SRAM | 4 KB | 4 KB | 4 KB | 4 KB | 4 KB |
| Temperature Range | -40C to +125C (Extended) | -40C to +85C (Industrial) | -40C to +125C (Extended) | -40C to +85C (Industrial) | -40C to +85C (Industrial) |
| Math Accelerator | Yes | Yes | Yes | No | No |
| 12-bit Differential ADC w/ Computation | Yes | Yes | Yes | No | No |
Key Differentiators
- Two CAN FD channels with hardware timestamping (vs PIC18F26K80-I/SO)
- Integrated math accelerator for sensor math pipelines (vs PIC18F26K83-I/SO)
- 12-bit differential ADC with hardware computation (vs PIC18F26K80-I/SO)
Design Notes
The PIC18F26Q84-E/SO operates from 2.3V to 5.5V; place a 100 nF decoupling capacitor as close as possible to each VDD pin and a 10 uF bulk capacitor on the supply rail. Estimated: at 64 MHz CPU speed with all peripherals active, the MCU draws approximately 15 mA typical; using the internal LDO from 5V to 1.8V core yields roughly 75 mW of internal dissipation. For battery-powered applications, switching the CPU to the 4 MHz LFINTOSC or sleep modes reduces supply current into the microampere range.
Ensure that the MCLR pin has a 10 kohm pull-up to VDD and a 100 nF capacitor to ground for in-circuit serial programming (ICSP). According to the Microchip datasheet, omitting the MCLR pull-up causes spurious resets in noisy environments. For CAN FD designs, configure the CAN bit-time segments to match the chosen MCP2562FD or equivalent transceiver; mismatch of the propagation segment by even 1 time quantum can cause bus errors at 5 Mbps.
Estimated: at 64 MHz with full peripheral activity, the SOIC-28 package dissipates roughly 150 mW internally, producing a junction temperature rise of approximately 18C above ambient using the JEDEC 4-layer board. For high-temperature applications near +125C ambient, derate CPU speed to 32 MHz or use forced-air cooling. Connect the SOIC-28 ground pins (10 and 19) to a single uninterrupted ground pour to minimize thermal resistance.
Route the CAN FD signals (RB1/RB3 for RX, RB0/RB2 for TX) as differential pairs with 100 ohm impedance, keeping length-matched to within 5 mm. According to the MCP2562FD reference design, place the CAN transceiver within 50 mm of the MCU to avoid stub reflections. Decouple the transceiver VCC with a 100 nF ceramic cap adjacent to the device.
Compliance Information
RoHS compliant per Microchip product page. -E suffix indicates extended -40C to +125C temperature range. AEC-Q100 automotive qualification requires separate ordering code; contact Microchip for AEC-Q100 grade variants.
