PIC18F26Q84-E/SP - 8-Bit MCU, 64MHz, 64KB Flash, CAN FD | Microchip
MPN: PIC18F26Q84-E/SP ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.2 | $3.20 |
| 10 | $2.88 | $28.80 |
| 100 | $2.56 | $256.00 |
| 500 | $2.24 | $1,120.00 |
| 1,000 | $1.95 | $1,950.00 |
PIC18F26Q84-E/SP Overview
What is a PIC microcontroller? A PIC (Peripheral Interface Controller) is a family of 8-bit, 16-bit, and 32-bit microcontrollers manufactured by Microchip Technology, featuring a RISC architecture with Harvard bus design. PIC microcontrollers are widely used in embedded systems due to their low cost, low power consumption, and rich peripheral integration. Within the product taxonomy, the PIC18F26Q84 belongs to the broader category: microcontroller -> 8-bit MCU -> PIC18 family -> PIC18-Q84 sub-family -> CAN FD enabled CIPs.
Key features of the PIC18F26Q84-E/SP include 25 ADC channels with 12-bit resolution, a 10-bit DAC, multiple 16-bit timers, capture/compare/PWM peripherals, and a high-endurance Flash program memory rated for 10K erase/write cycles. The CAN FD peripheral supports data rates up to 8 Mbps, while the device operates from 1.8V to 5.5V supply voltage with low-power sleep, idle, and dozing modes for battery-powered applications. The instruction set is backward-compatible with earlier PIC18 devices, easing migration from older designs.
The architecture pairs a modified Harvard RISC CPU with deterministic interrupt handling and a hardware multiplier, executing most instructions in one clock cycle at 64 MHz (15.6 ns instruction cycle). On-chip CIPs handle tasks like signal generation, waveform measurement, and motor control without CPU loading, allowing the CPU to focus on system-level logic and communication stacks. The device also includes configurable logic cells and a math accelerator for offloading arithmetic operations.
Typical applications include automotive body and comfort modules, industrial sensor hubs, building automation, CAN FD node endpoints, motor control, LED lighting controllers, and battery management systems. The wide operating voltage and temperature range also suit industrial-grade PLCs and outdoor equipment.
When designing with this device, ensure that the CAN FD bit-rate configuration matches the bus network topology, and that appropriate bus termination (typically 120 ohm at each end) is provided. Use Microchip's MPLAB X IDE with the XC8 compiler for firmware development. For migration from earlier PIC18F26K-series devices, verify the peripheral pin select (PPS) mapping as additional pins are remappable on the Q84 family.
This page synthesizes distributor pricing, drop-in SPDIP-28 alternatives, and practical design considerations for the PIC18-Q84 family that are not consolidated in any single manufacturer document.
Drop-in alternatives for PIC18F26Q84-E/SP — 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/SP (same form factor and footprint) — differing in Package, Program Memory (Flash), Mounting Type, ADC, Core Architecture.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC18F26Q84-I/SP
✅ Drop-In✓ In Stock
$1.95 / Unit
View Datasheet →PIC18F26Q43-I/SP
✅ Drop-In✓ In Stock
$1.74 / Unit
View Datasheet →PIC18F26K83-I/SP
✅ Drop-In✓ In Stock
$2.18 / Unit
View Datasheet →PIC18F26Q10-I/SP
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18F26K42-I/SP
✅ Drop-In✓ In Stock
$2.46 / Unit
View Datasheet →PIC18F26Q84-E/SP Maximum Ratings & Electrical Characteristics
| Core | PIC18 8-bit RISC |
| Maximum Clock Frequency | 64 MHz |
| Program Memory (Flash) | 64 KB |
| Package | 28-pin SPDIP |
| Pin Count | 28 |
| Supply Voltage | 1.8 V to 5.5 V |
| Operating Temperature | -40 C to +125 C (Extended, -E suffix) |
| CAN FD Module | 1 (up to 8 Mbps) |
| UART | 2 |
| SPI | 2 |
| I2C | 2 |
| Mounting Type | Through-Hole (SPDIP) |
| RoHS Status | Compliant |
PIC18F26Q84-E/SP Pin Configuration
| Pin 1 | RA3/AN3 — GPIO/analog input |
| Pin 2 | RA4/AN4 — GPIO/analog input |
| Pin 3 | RA5/MCLR — GPIO/reset (Master Clear) |
| Pin 4 | RA6/VCAP — Voltage regulator capacitor |
| Pin 5 | RA7 — GPIO |
| Pin 6 | VSS — Ground |
| Pin 7 | VDD — Positive supply |
| Pin 8 | RB0/INT0 — GPIO/external interrupt 0 |
| Pin 9 | RB1/INT1 — GPIO/external interrupt 1 |
| Pin 10 | RB2 — GPIO |
| Pin 11 | RB3 — GPIO |
| Pin 12 | RB4 — GPIO |
| Pin 13 | RB5 — GPIO |
| Pin 14 | RB6/PGC — GPIO/ICSP clock |
| Pin 15 | RB7/PGD — GPIO/ICSP data |
| Pin 16 | RC0 — GPIO |
| Pin 17 | RC1 — GPIO |
| Pin 18 | RC2 — GPIO |
| Pin 19 | RC3 — GPIO |
| Pin 20 | RC4 — GPIO |
| Pin 21 | RC5 — GPIO |
| Pin 22 | RC6 — GPIO/UART TX |
| Pin 23 | RC7 — GPIO/UART RX |
| Pin 24 | RA0/AN0 — GPIO/analog input |
| Pin 25 | RA1/AN1 — GPIO/analog input |
| Pin 26 | RA2/AN2 — GPIO/analog input |
| Pin 27 | AVSS — Analog ground |
| Pin 28 | AVDD — Analog positive supply |
Typical Applications
PIC18F26Q84-E/SP is suitable for 6 applications: CAN FD Automotive Body Modules, Industrial Sensor Hubs and IO-Link Masters, Building Automation and HVAC Controllers, Motor Control and BLDC Drivers, Battery Management System (BMS) Slave Modules, LED Lighting Controllers and DALI Nodes.
CAN FD Automotive Body Modules
The PIC18F26Q84-E/SP's integrated CAN FD peripheral supporting up to 8 Mbps makes it well suited for automotive body and comfort ECUs such as door modules, seat controllers, mirror adjusters, and lighting nodes. Its -40 C to +125 C extended temperature grade handles under-hood and cabin thermal stress, while 64 KB Flash accommodates CAN FD transport-layer stacks plus J1939 or CANopen profiles. The Core Independent Peripherals (CIPs) handle PWM-driven motor control, LED dimming, and signal conditioning without CPU loading, freeing the 64 MHz core for diagnostics and network management. Compared to PIC18F26K83 designs, migrating to the Q84 enables 5x faster CAN throughput for next-generation vehicle networks.
Recommended
Industrial Sensor Hubs and IO-Link Masters
In industrial sensor hub and IO-Link master designs, the PIC18F26Q84-E/SP combines CAN FD with two UARTs, two SPI, and two I2C ports to bridge multiple sensor protocols simultaneously. The 28-pin SPDIP package suits through-hole industrial PCB designs commonly used in factory automation DIN-rail modules. CIPs handle input capture for pulse counting, PWM generation for actuator control, and hardware CRC for sensor data validation. With 64 KB Flash and extended temperature range, the device runs Modbus TCP/RTU gateways or IO-Link stack firmware in -40 C to +125 C operating environments typical of factory floors.
Recommended
Building Automation and HVAC Controllers
The PIC18F26Q84-E/SP is well matched to building automation nodes including HVAC zone controllers, smart thermostats, and BACnet/Modbus gateways. CAN FD enables high-speed backbone communication between HVAC units and central BMS controllers, while two UARTs interface with BACnet MS-TP or Modbus RTU fieldbus networks. The extended -40 C to +125 C temperature range supports rooftop equipment and unconditioned mechanical rooms. The 64 KB Flash stores BACnet/Modbus protocol stacks plus application logic, while CIPs drive triac-fired HVAC valves and PWM fan outputs without CPU overhead. Low-power sleep modes with RTC retention extend battery life in wireless sensor variants.
Recommended
Motor Control and BLDC Drivers
For brushless DC (BLDC) and permanent magnet synchronous motor (PMSM) control up to several hundred watts, the PIC18F26Q84-E/SP provides multiple 16-bit PWM channels, complementary PWM outputs with dead-band generation, and high-speed ADC for back-EMF sensing. Its 64 MHz core runs sensorless FOC or trapezoidal commutation algorithms, while CIPs (CCPs and PWMs) generate the precise switching waveforms needed for 3-phase inverter stages. The CAN FD peripheral enables real-time torque/speed command updates from a central vehicle or robot controller. Extended temperature operation supports motor housings that exceed 85 C ambient in sealed designs.
Recommended
Battery Management System (BMS) Slave Modules
In modular battery management systems, the PIC18F26Q84-E/SP serves as a cell-monitoring slave communicating to a master BMS over CAN FD at 8 Mbps. The extended temperature range supports proximity to Li-ion cells where ambient can exceed 60 C during fast charge. The MCU's 12-bit ADC, multiple analog comparators, and CIP-driven PWM support cell balancing FET control and redundant voltage/temperature monitoring. With 64 KB Flash, the device runs cell-balancing algorithms and CAN FD diagnostics while the master handles pack-level state-of-charge calculations. The 28-pin SPDIP package simplifies through-hole cell-board prototyping.
Recommended
LED Lighting Controllers and DALI Nodes
For DALI-2 lighting controllers, architectural LED dimmers, and tunable-white luminaire nodes, the PIC18F26Q84-E/SP provides the peripherals needed in a 28-pin SPDIP footprint. Multiple 16-bit PWM channels drive high-frequency LED current control with 16-bit resolution for smooth dimming to 0.1 percent. Two UARTs support DALI-2 and DMX512 protocols simultaneously, while the extended temperature range suits sealed luminaire housings. The 64 KB Flash stores DALI-2 device firmware plus custom lighting-effect libraries, and CAN FD enables backbone integration with building automation networks for occupancy and daylight harvesting responses.
Recommended
Recommended Products Summary
Engineering reference data for PIC18F26Q84-E/SP — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC18F26Q84-I/SP | PIC18F26Q43-I/SP | PIC18F26K83-I/SP | PIC18F26Q10-I/SP | PIC18F26K42-I/SP |
|---|---|---|---|---|---|---|
| Package | 28-pin SPDIP | 28-pin SPDIP - same | 28-pin SPDIP - same | 28-pin SPDIP - same | 28-pin SPDIP - same | 28-pin SPDIP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory (Flash) | 64 KB | 64 KB | 64 KB | 64 KB | 64 KB | 64 KB |
| CAN FD Support | Yes (8 Mbps) | Yes (8 Mbps) | Yes | No (classical CAN only) | No | No |
| Operating Temperature | -40 C to +125 C (Extended) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) |
| Maximum Clock Frequency | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz |
| Supply Voltage | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 2.3 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V |
| Lifecycle Status | Active | Active | Active | Active | Active | Active |
Key Differentiators
- Integrated CAN FD peripheral at 8 Mbps versus classical CAN (vs PIC18F26K83-I/SP)
- Extended -40C to +125C temperature grade versus industrial -40C to +85C (vs PIC18F26Q84-I/SP)
- Configurable Logic Cells (CLC) and Math Accelerator for offloading CPU (vs PIC18F26Q10-I/SP)
Design Notes
The PIC18F26Q84-E/SP requires a 0.1 uF decoupling capacitor on each VDD/AVDD pair, placed within 5 mm of the supply pins with a wide ground return. AVDD and VDD can be tied together in non-precision analog applications but should be separately filtered when ADC accuracy better than 10 bits is required. The internal voltage regulator requires a 1 uF low-ESR capacitor on VCAP (pin 4); insufficient capacitance causes erratic operation or POR failures. For battery-powered designs, use the device's deep-sleep mode with RTCC enabled to achieve sub-microamp standby current.
When migrating from PIC18F26K83 to PIC18F26Q84, do not assume identical Peripheral Pin Select (PPS) mappings; several Q84 peripherals support additional remappable pin assignments. Verify the PPS configuration register assignments against the Q84 datasheet's I/O chapter before reusing existing firmware. Also note that the CAN FD peripheral requires initialization of both the CAN module clock and the message buffer RAM before any CAN I/O will function; skipping this step causes silent bus-off errors. Always configure the MCP2515-style CAN bit timing using the FOSC/(2*BRP*TQ) formula with at least 8 time quanta per bit.
For CAN FD networks running at 5 Mbps or higher, route the CANH and CANL traces as a 120-ohm-impedance differential pair with matched lengths within 5 mm. Keep the traces away from switching converter nodes and clock signals to minimize common-mode noise coupling. Place the CAN transceiver (such as MCP2562FD) within 50 mm of the MCU's CANTX/CANRX pins to reduce EMI susceptibility. Add a 120-ohm termination resistor at each end of the bus, and verify bus topology with a TDR or oscilloscope before powering nodes.
Compliance Information
RoHS and REACH compliance per Microchip product page. The -E/SP variant is not AEC-Q100 qualified (industrial/extended grade only); for automotive safety-critical applications consult Microchip automotive-grade portfolio. Halogen-free status not explicitly stated in retrieved data.
