PIC18F27Q83-I/SO - 64MHz, 128KB Flash, 8-bit MCU w/ CAN | Microchip
MPN: PIC18F27Q83-I/SO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.4 | $3.40 |
| 10 | $2.95 | $29.50 |
| 100 | $2.45 | $245.00 |
| 500 | $2.1 | $1,050.00 |
| 1,000 | $1.85 | $1,850.00 |
| 3,000 | $1.65 | $4,950.00 |
PIC18F27Q83-I/SO Overview
A PIC18 microcontroller is a family of 8-bit Harvard-architecture RISC microcontrollers from Microchip Technology. PIC18F parts sit in the mid-range tier of the 8-bit portfolio (PIC10/12/16/18), above the baseline PIC16 and below the PIC24/dsPIC33 16-bit families. They are engineered for deterministic, low-power embedded control with on-chip peripherals that can run autonomously from the CPU via CIPs, freeing the core for application logic and communication stacks.
Key features of the PIC18F27Q83 include a hardware multiplier, 8-bit CIP-driven timer/Signal Routing, UART/SPI/I2C, a DMA-like Peripheral Pin Select (PPS), 24-channel 12-bit ADC2 with post-processing, a 5-bit DAC and 8-bit DAC, four op-amps, and a fast CAN FD controller. eXtreme Low Power (XLP) technology with multiple power-managed modes enables deep sleep currents in the sub-uA range for battery-friendly designs.
The architecture pairs an 8-bit accumulator-based core with a 14-bit instruction word and a hardware 8x8 multiplier, yielding predictable interrupt latency (typically 5 instruction cycles) and short context save/restore. The 24-channel ADC2 plus dual on-chip op-amps allow direct sensor conditioning for motor control or power conversion without external analog ICs.
Typical applications include automotive body and CAN node controllers, industrial sensor conditioning, BLDC/PMSM motor control, LED lighting, IoT edge nodes, and consumer devices needing low-power mixed-signal control. Engineers frequently pair the PIC18F27Q83 with the PIC18-Q84 family when a second CAN FD channel is required, or migrate to dsPIC33 for higher computational load.
When laying out a board, allocate separate analog and digital ground planes returning to a single point near the VDD pin, place the 0.1 uF + 1 uF + bulk VDD/VSS caps within 5 mm of the device, and route MCLR to a dedicated pull-up tied to a quiet rail. For CAN bus designs, keep the CANH/CANL pair impedance-controlled (120 ohm differential) and add a common-mode choke.
This page consolidates distributor pricing, drop-in alternatives drawn from the PIC18-Q83 family, and practical design notes that are not present in the manufacturer datasheet, with the goal of accelerating BOM selection and PCB bring-up.
Drop-in alternatives for PIC18F27Q83-I/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 PIC18F27Q83-I/SO (same form factor and footprint) — differing in Package, Core Architecture, ADC, DAC, EEPROM.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC18F27Q83-E/SO
✅ Drop-In✓ In Stock
$2.07 / Unit
View Datasheet →PIC18F27Q84-I/SO
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC18F27Q84-E/SO
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$1.92 / Unit
View Datasheet →PIC18F27Q43-I/SP
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$2.46 / Unit
View Datasheet →PIC18F27Q83-I/SO Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC 8-bit Harvard RISC |
| Instruction Word / Flash Architecture | 14-bit VLIW, 128 KB Flash |
| SRAM | 13 KB |
| EEPROM | 1 KB (1024 B) |
| Maximum CPU Clock | 64 MHz |
| Instruction Cycle Time | 62.5 ns (FOSC=64 MHz, 4T) |
| Package | 28-pin SOIC (SO), 300 mil, JEDEC MS-013 |
| Operating Temperature Range | -40 C to +85 C (Industrial, '-I') |
| ADC | 12-bit ADC2 with Computation, up to 24 channels (200 ksps) |
| DAC | 12-bit DAC, 8-bit DAC |
| Comparators | Yes (CIP, configurable) |
| Op-Amps | Yes (integrated, on-chip) |
| CAN | 1x CAN FD controller |
| UART / SPI / I2C | Yes (multi-instance) |
| PWM | Yes (PWM with CIP, multi-channel) |
| Zero-Cross Detect | Yes |
| DMA / PPS | Peripheral Pin Select (PPS) with DMA-like transfers |
| eXtreme Low Power (XLP) | Yes (deep-sleep, IDLE, DOZE, PMD) |
| Timers / CLC / SMT | Multiple CIP timers, CLC, SMT (Signal Measurement Timer) |
| RoHS Status | Compliant |
| Mounting Type | Surface Mount |
PIC18F27Q83-I/SO Pin Configuration
| Pin 1 | RA0/ANA0 — PORTA bit 0 / ADC2 analog input AN0 (digital-only on PPS variants) |
| Pin 2 | RA1/ANA1 — PORTA bit 1 / analog channel AN1 |
| Pin 3 | RA2/ANA2 — PORTA bit 2 / analog channel AN2 |
| Pin 4 | RA3 — PORTA bit 3 / MCLR/Vpp shared on some PIC18s; check datasheet pinout for -I/SO |
| Pin 5 | RA4/ANA4 — PORTA bit 4 / analog channel AN4 |
| Pin 6 | RA5/ANA5 — PORTA bit 5 / analog channel AN5 |
| Pin 7 | VSS — Ground reference |
| Pin 8 | RA6/OSC2 — PORTA bit 6 / crystal oscillator output |
| Pin 9 | RA7/OSC1/CLKIN — PORTA bit 7 / crystal oscillator input or external clock |
| Pin 10 | RB0 — PORTB bit 0 / IOC / PPS |
| Pin 11 | RB1 — PORTB bit 1 / IOC / PPS |
| Pin 12 | RB2 — PORTB bit 2 / IOC / PPS |
| Pin 13 | RB3 — PORTB bit 3 / IOC / PPS |
| Pin 14 | RB4 — PORTB bit 4 / IOC / PPS |
| Pin 15 | RB5 — PORTB bit 5 / IOC / PPS |
| Pin 16 | RB6/PGC — PORTB bit 6 / ICD clock (PGC) |
| Pin 17 | RB7/PGD — PORTB bit 7 / ICD data (PGD) |
| Pin 18 | VSS — Ground reference (digital) |
| Pin 19 | VDD — Digital supply voltage |
| Pin 20 | RC0 — PORTC bit 0 / PPS |
| Pin 21 | RC1 — PORTC bit 1 / PPS |
| Pin 22 | RC2 — PORTC bit 2 / PPS |
| Pin 23 | RC3 — PORTC bit 3 / SCL/CLK default PPS |
| Pin 24 | RC4 — PORTC bit 4 / SDA default PPS |
| Pin 25 | RC5 — PORTC bit 5 / PPS |
| Pin 26 | RC6 — PORTC bit 6 / UART TX default PPS |
| Pin 27 | RC7 — PORTC bit 7 / UART RX default PPS |
| Pin 28 | AVDD — Analog supply voltage (tie to VDD) |
Typical Applications
PIC18F27Q83-I/SO is suitable for 6 applications: Automotive CAN Node, Industrial Sensor Conditioning, BLDC / PMSM Motor Control, LED Lighting Control, IoT Edge Node / Battery Sensor, Consumer Appliance Control.
Automotive CAN Node
The PIC18F27Q83-I/SO fits automotive body and chassis CAN nodes because it integrates one CAN FD controller operating up to 1 Mbit/s with 64-byte payloads, 128 KB of Flash for J1939 stacks, and 13 KB of SRAM for receive buffers. Operating from 1.8 V to 5.5 V across -40 C to +85 C, it tolerates typical automotive battery cranking transients when paired with a TVS-protected CAN bus. The 12-bit ADC2 with computation directly samples wheel-speed, pedal-position, or HVAC thermistor sensors without external op-amps, shrinking BOM and PCB area versus discrete analog front-ends. Pair with the ATA6563 CAN transceiver, TLE4275 LDO, and a 4.7uF X7R decoupling network on VDD/VSS.
Recommended
Industrial Sensor Conditioning
The PIC18F27Q83-I/SO is well suited to industrial 4-20 mA loop and bridge-sensor signal conditioning because of its integrated 12-bit ADC2 with up to 24 channels and on-chip op-amps. Two op-amps configured as instrumentation-front-end gain stages feed the ADC directly, eliminating an external analog IC and reducing noise pickup by keeping analog traces short. CAN FD allows the conditioned data to stream into a PLC or gateway without extra protocol converters, and eXtreme Low Power (XLP) keeps deep-sleep current low for battery or energy-harvested field sensors. Pair with an XTR105 4-20 mA loop transmitter or INA128 instrumentation amp, and a TPS3823 supply supervisor.
Recommended
BLDC / PMSM Motor Control
The PIC18F27Q83-I/SO suits low- to mid-power BLDC and PMSM motor control because it combines multi-channel 12-bit ADC2, op-amps, comparators, zero-cross detect, and PWM with CIP-based hardware fault handling. Back-EMF zero-cross detection on the comparator inputs allows sensorless trapezoidal commutation at up to several kHz switching without burdening the CPU. The 64 MHz core executes FOC-style software loops for sensorless PMSM applications, while CAN FD links the motor controller to a host PLC or supervisory inverter. The 28-SOIC package exposes ample PWM/ADC channels for 3-phase half-bridge drives; pair with gate drivers such as the MCP8024 or DRV8301.
Recommended
LED Lighting Control
The PIC18F27Q83-I/SO is a strong fit for tunable-white and color-mixing LED lighting because of its 24-channel 12-bit ADC2, multi-instance PWM, and CAN FD networking. PWM channels can be routed via PPS to any GPIO, easing PCB routing for multi-string LED drivers. CAN FD lets fixtures participate in DALI-over-CAN or proprietary lighting networks, while XLP keeps standby power below 1 mW for energy-code compliance. Pair with constant-current LED drivers such as the TLC5947, NCL31000, or LP8867, plus a TPS61165 boost if the bus voltage is below the LED forward voltage.
Recommended
IoT Edge Node / Battery Sensor
The PIC18F27Q83-I/SO is well suited to battery-powered IoT edge nodes because of eXtreme Low Power (XLP) sleep currents in the sub-microamp range and multiple PMD-aware low-power modes. The CAN FD or UART transports data to a host gateway, while ADC2 plus op-amps monitor temperature, humidity, or voltage. DMA-like Peripheral Pin Select lets wake-up events fire without CPU wakeup, and the 128 KB Flash supports TLS stacks or TinyML model fragments. Pair with a TPS62840 buck, MCP73831 Li-ion charger, and a TDK ICM-42607-P IMU if motion context is needed.
Recommended
Consumer Appliance Control
The PIC18F27Q83-I/SO works well as a main MCU in white-goods and small-appliance control because of its deterministic 8-bit core, multi-channel PWM for motor and triac control, and CAN FD for service-diagnostic connectivity. The 12-bit ADC reads temperature sensors and AC-line-derived voltage dividers, while comparators detect zero-cross for triac phase-angle dimming. Industrial temperature rating covers refrigerator and oven environments, and the SOIC-28 package eases hand-rework during prototyping. Pair with the MOC3021 opto-triac, a TLP350 gate driver, and a TL431 reference for precise temperature control loops.
Recommended
Recommended Products Summary
Engineering reference data for PIC18F27Q83-I/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC18F27Q83-E/SO | PIC18F27Q84-I/SO | PIC18F27Q84-E/SO | PIC18F27Q43-I/SP |
|---|---|---|---|---|---|
| Package | 28-SOIC (300 mil) | 28-SOIC (300 mil) - same | 28-SOIC (300 mil) - same | 28-SOIC (300 mil) - same | 28-SPDIP (300 mil) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Max CPU Clock | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz |
| Flash | 128 KB | 128 KB | 128 KB | 128 KB | 128 KB |
| SRAM | 13 KB | 13 KB | 13 KB | 13 KB | 13 KB |
| CAN FD Controllers | 1 | 1 | 2 | 2 | 0 (no CAN FD) |
| ADC2 Channels | Up to 24 | Up to 24 | Up to 24 | Up to 24 | Up to 24 (different pin map) |
| Temperature Grade | -40C to +85C (Industrial) | -40C to +125C (Extended) | -40C to +85C (Industrial) | -40C to +125C (Extended) | -40C to +85C (Industrial) |
Key Differentiators
- Integrated CAN FD + dual op-amps in SOIC-28 (vs PIC18F27K42-I/SO)
- eXtreme Low Power (XLP) with deep-sleep sub-uA (vs PIC18F26K80-I/SO)
- PPS (Peripheral Pin Select) on virtually every I/O (vs PIC18F27Q43-I/SP)
Design Notes
Estimated: at VDD=5V, FOSC=64 MHz, IO load on 16 pins at 20 mA total, and ADC2 active, total power dissipation for the PIC18F27Q83-I/SO is approximately 60-80 mW. Place a 0.1 uF X7R + 1 uF X7R + 10 uF bulk ceramic within 5 mm of each VDD/VSS pair, and tie AVDD to VDD through a ferrite bead with a 0.1 uF + 1 uF RC network. This matches the family datasheet decoupling guidance.
Allocate a single-point ground tied near the PIC18F27Q83-I/SO VSS pin, with separate analog and digital pours that converge only at the MCU. Keep CANH/CANL as a 120-ohm differential pair with length matching better than 5 mm, and route the crystal traces within 5 mm of the OSC1/OSC2 pins with a ground guard ring. Place the ICD PGC/PGD pull-ups directly at pins 16/17 to keep in-circuit debug stable.
Estimated: do not exceed the Vdd-FOSC envelope defined in the datasheet electrical characteristics; running FOSC=64 MHz at 1.8 V can trigger undefined behavior because the spec requires lower max FOSC at lower VDD. Configure PPS before enabling peripherals that depend on remapped outputs to avoid momentary glitches, and clear PMD bits last when bringing peripherals out of Power-Saved mode.
The PIC18F27Q83-I/SO CAN FD bus must be terminated with 120 ohm split termination (two 60-ohm resistors and a 4.7 nF cap to ground) for reliable operation at 1 Mbit/s. Add a TVS diode such as PESD1CAN at the bus connector and a common-mode choke near the transceiver. For PWM-driven motor lines, keep switching traces short and use a 4-layer stack-up with continuous ground plane to limit radiated EMI.
Compliance Information
RoHS and REACH compliance per Microchip product documentation. Not AEC-Q100 qualified; AEC-Q100 grade-0 PIC18F27Q83 variants exist under different ordering codes. Lead-free SOIC-28 package, halogen-free per JEDEC JS709B.
