PIC18F27Q83T-I/SO - 8-Bit 64MHz 128KB Flash MCU w/ CAN | Microchip
MPN: PIC18F27Q83T-I/SO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.1 | $4.10 |
| 10 | $3.69 | $36.90 |
| 100 | $3.25 | $325.00 |
| 500 | $2.91 | $1,455.00 |
| 1,000 | $2.62 | $2,620.00 |
PIC18F27Q83T-I/SO Overview
An 8-bit microcontroller (MCU) is a microprocessor that processes data in 8-bit-wide chunks and integrates Flash, RAM, EEPROM, peripherals, and interrupt logic on a single die. The PIC18 family uses an enhanced Harvard RISC architecture with a 16-bit instruction word and an 8-bit data path; it sits in the hierarchy: 8-bit MCU -> microcontroller -> embedded processor -> semiconductor. The PIC18-Q83 series targets applications where Core Independent Peripherals (CIPs) offload timing-critical tasks from the CPU, lowering power and code complexity.
Key features include integrated CAN FD support, a 12-bit ADC with automatic averaging and threshold comparison, the Configurable Logic Cell (CLC) and Signal Measurement Timer (SMT) CIPs, and zero-cross detection. The device operates from 1.8V to 5.5V and offers nanopower technology with typical IDLE currents around 5 µA, allowing battery-friendly sleep modes.
Typical applications include automotive body and sensor nodes, industrial control, building automation, sensor conditioning, and low-cost CAN node endpoints. The 28-SOIC package is footprint-compatible with legacy PIC18F2xK80 and PIC18F2xK42 designs, simplifying migration.
When designing, ensure decoupling capacitors are placed within 3 mm of VDD/VSS, use proper CAN bus termination (120 Ω at each end), and follow the datasheet recommended trace geometry for the ADC analog inputs. The 'T' suffix indicates Tape & Reel packaging.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, giving engineers a faster path from selection to prototype.
Drop-in alternatives for PIC18F27Q83T-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 PIC18F27Q83T-I/SO (same form factor and footprint) — differing in Package, ADC, DAC, Core Architecture, Operating Temperature.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC18F27Q83T-I/5N
✅ Drop-In✓ In Stock
$1.78 / Unit
View Datasheet →PIC18F27Q83-I/SP
✅ Drop-In✓ In Stock
$2.42 / Unit
View Datasheet →PIC18F27Q43-I/SP
✅ Drop-In✓ In Stock
$2.46 / Unit
View Datasheet →PIC18F27Q10-I/SO
✅ Drop-In✓ In Stock
$1.85 / Unit
View Datasheet →PIC18F27K42T-I/SO
✅ Drop-In✓ In Stock
$3.08 / Unit
View Datasheet →PIC18F27Q83T-I/SO Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC18 (8-bit RISC, enhanced Harvard) |
| Maximum CPU Frequency | 64 MHz |
| Program Memory (Flash) | 128 KB (128K x 8) |
| Data SRAM | 13 KB |
| Data EEPROM | 1 KB |
| Operating Voltage Range | 1.8 V to 5.5 V |
| ADC | 12-bit ADC with computation, up to 24 channels |
| DAC | 5-bit / 8-bit DAC |
| Communication | 1x CAN FD, 2x I2C, 2x SPI, 2x UART |
| Timers | 4x 16-bit Timer, DSM, SMT |
| PWM Channels | Multiple 16-bit PWM (peripheral dependent) |
| Core Independent Peripherals (CIPs) | CLC, NCO, CWG, DSM, SMT, ZCD |
| Package | 28-SOIC (7.50 mm body, 1.27 mm pitch) |
| Operating Temperature | -40 C to +85 C (Industrial) |
| Mounting Type | Surface Mount |
| MSL Level | MSL1 (per Microchip) |
| RoHS Status | Compliant |
| Lead-Free / Halogen-Free | Yes / Yes |
PIC18F27Q83T-I/SO Pin Configuration
| Pin 1 | RA5 — Digital I/O / analog input |
| Pin 2 | RA4 — Digital I/O / analog input |
| Pin 3 | RA3 — Digital I/O / analog input / MCLR |
| Pin 4 | RA2 — Digital I/O / analog input |
| Pin 5 | RA1 — Digital I/O / analog input / DAC1OUT |
| Pin 6 | RA0 — Digital I/O / analog input |
| Pin 7 | VSS — Ground reference |
| Pin 8 | VDD — Positive supply |
| Pin 9 | RA7 — Digital I/O / analog input |
| Pin 10 | RA6 — Digital I/O / analog input |
| Pin 11 | RC0 — Digital I/O / analog input |
| Pin 12 | RC1 — Digital I/O / analog input |
| Pin 13 | RC2 — Digital I/O / analog input |
| Pin 14 | RC3 — Digital I/O / analog input / SCL |
| Pin 15 | RC4 — Digital I/O / analog input / SDA |
| Pin 16 | RC5 — Digital I/O / analog input |
| Pin 17 | RC6 — Digital I/O / analog input / TX |
| Pin 18 | RC7 — Digital I/O / analog input / RX |
| Pin 19 | VSS — Ground reference |
| Pin 20 | VDD — Positive supply |
| Pin 21 | RB0 — Digital I/O / analog input / interrupt |
| Pin 22 | RB1 — Digital I/O / analog input / interrupt |
| Pin 23 | RB2 — Digital I/O / analog input / interrupt |
| Pin 24 | RB3 — Digital I/O / analog input / interrupt |
| Pin 25 | RB4 — Digital I/O / analog input / interrupt |
| Pin 26 | RB5 — Digital I/O / analog input / interrupt |
| Pin 27 | RB6 — Digital I/O / ICSPCLK |
| Pin 28 | RB7 — Digital I/O / ICSPDAT |
Typical Applications
PIC18F27Q83T-I/SO is suitable for 6 applications: Automotive Body & Sensor Nodes, Industrial Sensor Conditioning & Control, Building Automation & HVAC Nodes, Low-Cost CAN Endpoint Modules, Battery-Powered IoT Edge Devices, Consumer Appliance Control Boards.
Automotive Body & Sensor Nodes
The PIC18F27Q83T-I/SO integrates a hardware CAN FD controller compliant with ISO 11898-1, making it ideal for automotive body and sensor nodes. With 128 KB Flash and 13 KB SRAM, the device can host a CANopen or J1939 stack alongside application firmware, while the 12-bit ADCC handles temperature, pressure, or position sensors with hardware averaging that frees CPU cycles. The 1.8V to 5.5V supply range allows direct connection to a 5V or 3.3V automotive bus, and nanopower Sleep reduces quiescent draw on always-on nodes. Designers pair it with the MCP2517FD external CAN FD controller only if high-speed CAN FD channels are needed; otherwise the internal module is sufficient.
Recommended
Industrial Sensor Conditioning & Control
The 12-bit ADC with computation (ADCC) and on-chip 5/8-bit DAC make the PIC18F27Q83T-I/SO a natural fit for industrial sensor signal conditioning. The ADCC supports hardware averaging, oversampling, and threshold comparison, so an analog front end feeding a 4-20 mA loop or resistive bridge can be digitized with minimal CPU overhead. The SMT and CLC CIPs perform timing-critical measurement tasks in hardware, allowing the CPU to remain in IDLE for long periods - critical for energy-harvesting or battery-powered industrial nodes. The wide 1.8V to 5.5V supply allows direct interfacing with 24V industrial rails via a single LDO.
Recommended
Building Automation & HVAC Nodes
Building automation nodes - thermostats, damper controllers, lighting keypads - benefit from the PIC18F27Q83T-I/SO's combination of 128 KB Flash, 13 KB SRAM, and multiple communication peripherals (UART, I2C, SPI). The 28-SOIC footprint fits compact wall-mount enclosures, and nanopower Sleep with wake-on-touch via the CLC allows battery-powered touch interfaces that wake only on user input. The hardware CWG and PWM channels drive LED dimmers and small triac gates without software bit-banging. With CAN FD on-board, multiple nodes can be networked over a robust differential backbone rather than daisy-chained UART.
Recommended
Low-Cost CAN Endpoint Modules
When designing cost-sensitive CAN endpoint modules - simple sensor or actuator nodes that sit at the edge of a CAN network - the PIC18F27Q83T-I/SO provides a single-chip solution: the integrated CAN FD controller eliminates an external CAN ASIC, while the 12-bit ADCC handles analog sensor inputs directly. With 128 KB Flash it can support modest protocol stacks, and the 1 KB EEPROM allows node-ID and calibration storage without an external memory chip. The hardware CLC and NCO let designers implement custom bit-streams, PWM, or frequency synthesis without taxing the CPU. The 28-SOIC footprint is well-suited to hand-soldering prototypes.
Recommended
Battery-Powered IoT Edge Devices
For battery-powered IoT edge devices the PIC18F27Q83T-I/SO offers nanopower Sleep with IDLE currents around 5 µA typical, and peripherals like the SMT, RTC, and CLC can run while the CPU is asleep to wake on real events. The 1.8V to 5.5V supply range permits direct operation from a single CR2032 or 2x AA cell stack without boost conversion. With 13 KB SRAM and 128 KB Flash, the MCU can run lightweight wireless stacks (custom or proprietary) over UART/SPI radios. The 28-SOIC package is footprint-compatible with hand-rework-friendly designs and supports industrial temperature range for outdoor deployments.
Recommended
Consumer Appliance Control Boards
White goods and consumer appliances benefit from the PIC18F27Q83T-I/SO's integrated 12-bit ADC, multiple PWM channels, and small 28-SOIC footprint. The CIPs (CLC, NCO, CWG, DSM) handle appliance-specific tasks such as motor soft-start, triac zero-crossing, and tone generation in hardware, dramatically reducing firmware complexity and BOM cost. The 128 KB Flash hosts UI logic, fault diagnostics, and communication stacks, while 1 KB EEPROM stores user settings and error logs across power cycles. The wide supply range and industrial temperature grade ensure reliable operation in kitchen or laundry environments.
Recommended
Recommended Products Summary
Engineering reference data for PIC18F27Q83T-I/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC18F27Q83T-I/5N | PIC18F27Q83-I/SP | PIC18F27Q43-I/SP | PIC18F27Q10-I/SO | PIC18F27K42T-I/SO |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | SOIC-28 | VQFN-28 (5N) - same pinout | SPDIP-28 (SP) - same pinout | SPDIP-28 (SP) - same pinout | SOIC-28 - same | SOIC-28 - same |
| Flash Memory | 128 KB | 128 KB | 128 KB | 128 KB | 64 KB | 128 KB |
| SRAM | 13 KB | 13 KB | 13 KB | 13 KB | 8 KB | 8 KB |
| EEPROM | 1 KB | 1 KB | 1 KB | 1 KB | 1 KB | 1 KB |
| CAN FD | Yes (1x) | Yes (1x) | Yes (1x) | No | No | No |
| Maximum Clock | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz |
| Operating Voltage | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V |
| Unit Price (1k qty) | USD 2.62 | USD 2.55 | USD 2.95 | USD 2.85 | USD 2.20 | USD 2.50 |
Key Differentiators
- Integrated CAN FD hardware controller (vs PIC18F27K42T-I/SO)
- Maximum Flash density in 28-pin PIC18 family (vs PIC18F27Q10-I/SO)
- Nanopower Sleep with autonomous CIP operation (vs PIC18F26K80-I/SO)
- ADCC hardware averaging and threshold compare (vs PIC18F27Q83-I/SP)
Design Notes
Place a 0.1 µF ceramic decoupling capacitor within 3 mm of each VDD/VSS pair (pins 8 and 20 on the SOIC-28). For noise-sensitive analog sampling, add a bulk 10 µF tantalum or aluminum-polymer cap at the board's main supply input. The PIC18F27Q83T-I/SO draws IDLE currents around 5 µA typical - ensure your LDO has low Iq or use the internal Sleep modes to extend battery life in IoT deployments.
Route the CAN FD differential pair (CANTX/CANRX) as a 120 Ω differential microstrip with matched length (±2 mm) and impedance-controlled to 120 Ω. Place the MCP2562FD transceiver adjacent to the MCU with the bus-side ESD protection (e.g., PESD1CAN) within 5 mm of the connector. Keep analog traces away from digital switching nodes; the ADCC channels are noise-sensitive and benefit from a guarded analog ground island.
Avoid floating digital inputs - unused I/O pins on the PIC18F27Q83T-I/SO must be configured as outputs or tied to VDD/VSS to prevent shoot-through and excess current. Do not operate VDD below 1.8V or above 5.5V; ADC accuracy degrades outside 2.3V to 5.5V. The 'T' suffix indicates Tape & Reel; confirm reel orientation against your pick-and-place feeder to avoid soldering mirrored parts onto the board.
Estimated: at maximum activity (64 MHz, all peripherals enabled, 3.3V supply), the PIC18F27Q83T-I/SO dissipates roughly 30 mW. The 28-SOIC package's thermal resistance θJA is approximately 80 C/W on a 2-layer FR-4 board, giving a junction-to-ambient rise of only 2.4 C - well within the 85 C industrial limit. For higher ambient temperatures, improve θJA by adding thermal vias under the exposed pad or upgrading to a 4-layer board.
Compliance Information
RoHS and REACH compliant per Microchip product page. Industrial grade - not AEC-Q100 qualified; for automotive designs review Microchip's AEC-Q100 qualified PIC18 variants. The 'T' suffix denotes Tape & Reel packaging per Microchip ordering code conventions.
