PIC18F27Q10T-I/SO - 8-bit MCU, 128KB Flash, 64MHz | Microchip
MPN: PIC18F27Q10T-I/SO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.95 | $2.95 |
| 10 | $2.66 | $26.60 |
| 100 | $2.31 | $231.00 |
| 500 | $2.07 | $1,035.00 |
| 1,000 | $1.85 | $1,850.00 |
PIC18F27Q10T-I/SO Overview
An 8-bit microcontroller (MCU) is a programmable logic device built around an 8-bit CPU core that executes instructions on 8-bit data. Within the broader semiconductor taxonomy, an MCU is a sub-category of microcontrollers, which sit under microprocessors, integrated circuits, and ultimately semiconductors. The 8-bit class emphasizes deterministic timing, low power, and ease of use, making it well-suited to cost-sensitive embedded control where 32-bit performance is unnecessary.
Key features include 5V operation for enhanced noise immunity in industrial environments, integrated core-independent peripherals that offload tasks from the CPU, eXtreme Low Power (XLP) modes with sleep currents in the nanoamp range, and configurable logic cells for hardware customization. Communication interfaces include I2C, SPI, UART with LIN support, and CAN. The device also integrates a high-performance 10-bit ADC, a 5-bit DAC for analog output, multiple timers and PWM channels, and hardware limit timers for safety-critical applications.
Architecturally, the PIC18F27Q10 uses an enhanced Harvard architecture with separate program and data buses, a 16-bit instruction word, and a hardware multiplier for DSP-like arithmetic. The 64 MHz internal oscillator, combined with a 4PLL multiplier, supports instruction cycles as fast as 62.5 ns. Built-in peripherals operate autonomously, freeing the CPU for application-level logic.
Typical applications include industrial sensor nodes, motor control with BLDC/PMSM drive, low-power IoT edge nodes, building automation (HVAC, lighting), and automotive body electronics. The 5V-tolerant I/O and integrated analog simplify designs in noisy industrial environments while the XLP features extend battery life in portable systems.
When designing with this MCU, ensure your linker script reserves the upper Flash for the device's interrupt vector table and that CWG, CCP and PWM channels are routed to the desired I/O pins to avoid conflicts. The SOIC-28 footprint is breadboard-friendly and supports hand-soldering for prototypes.
This page synthesizes distributor pricing, drop-in same-family alternatives, and practical design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for PIC18F27Q10T-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 PIC18F27Q10T-I/SO (same form factor and footprint) — differing in ADC, Package, Program Memory (Flash), PWM Channels, DAC.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC18F26Q10T-I/SO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18F27Q10-I/SO
✅ Drop-In✓ In Stock
$1.85 / Unit
View Datasheet →PIC18F27Q10T-E/SO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18F26Q10-I/SO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18F26Q10T-I/SS
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$1.05 / Unit
View Datasheet →PIC18F27Q10T-I/SS
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$1.65 / Unit
View Datasheet →PIC18F27Q10T-I/SO Maximum Ratings & Electrical Characteristics
| Core | PIC18 8-bit RISC |
| Program Memory (Flash) | 128 KB |
| Data RAM | 3.5 KB |
| EEPROM | 256 B |
| Maximum CPU Speed | 64 MHz |
| Operating Voltage | 2.3 V to 5.5 V |
| I/O Pins | 25 (on 28-pin package) |
| ADC | 10-bit ADC2 (multiple channels) |
| DAC | 5-bit DAC |
| Comparators | Yes |
| PWM Channels | Yes (multiple) |
| CCP / CWG / HLT | Yes (Capture/Compare/PWM, Complementary Waveform Generator, Hardware Limit Timer) |
| Communication | UART, I2C, SPI, LIN |
| Package | 28-pin SOIC (wide, 7.5 mm body) |
| Mounting Type | Surface Mount |
| Operating Temperature | -40 C to +85 C (Industrial) |
| RoHS Status | Compliant |
PIC18F27Q10T-I/SO Pin Configuration
| Pin 1 | RA5 — I/O port A bit 5 / ADC |
| Pin 2 | RA4 — I/O port A bit 4 |
| Pin 3 | RA3 — I/O port A bit 3 / VREF+ |
| Pin 4 | RA2 — I/O port A bit 2 |
| Pin 5 | RA1 — I/O port A bit 1 |
| Pin 6 | RA0 — I/O port A bit 0 |
| Pin 7 | OSC1 — Crystal oscillator input |
| Pin 8 | OSC2 — Crystal oscillator output |
| Pin 9 | VSS — Ground |
| Pin 10 | VDD — Positive supply |
| Pin 11 | RB7 — I/O port B bit 7 |
| Pin 12 | RB6 — I/O port B bit 6 / PGC |
| Pin 13 | RB5 — I/O port B bit 5 / PGD |
| Pin 14 | RB4 — I/O port B bit 4 |
| Pin 15 | RB3 — I/O port B bit 3 |
| Pin 16 | RB2 — I/O port B bit 2 |
| Pin 17 | RB1 — I/O port B bit 1 |
| Pin 18 | RB0 — I/O port B bit 0 |
| Pin 19 | RC7 — I/O port C bit 7 / RX |
| Pin 20 | RC6 — I/O port C bit 6 / TX |
| Pin 21 | RC5 — I/O port C bit 5 |
| Pin 22 | RC4 — I/O port C bit 4 |
| Pin 23 | RC3 — I/O port C bit 3 / SCL |
| Pin 24 | RC2 — I/O port C bit 2 / SDA |
| Pin 25 | RC1 — I/O port C bit 1 |
| Pin 26 | RC0 — I/O port C bit 0 |
| Pin 27 | MCLR — Master clear reset (active low) |
| Pin 28 | RA7 — I/O port A bit 7 |
Typical Applications
PIC18F27Q10T-I/SO is suitable for 7 applications: Industrial Sensor Nodes, BLDC / PMSM Motor Control, Battery-Powered IoT Edge Nodes, Building Automation (HVAC, Lighting), Automotive Body Electronics, Portable Medical Devices, Consumer Appliance Control.
Industrial Sensor Nodes
The PIC18F27Q10T-I/SO fits industrial sensor node designs because its 5V-tolerant I/O and integrated 10-bit ADC2 deliver enhanced noise immunity on factory floors. The 64 MHz core runs PID control loops at 1 ms intervals while 128 KB Flash stores calibration tables and protocol stacks for Modbus or IO-Link. XLP sleep modes draw nanoamp-level current between sensor reads, extending battery life in wireless HART nodes by years.
Recommended
BLDC / PMSM Motor Control
The PIC18F27Q10T-I/SO is well-suited for small BLDC and PMSM motor control thanks to its integrated CWG (Complementary Waveform Generator), CCP and PWM channels that drive three-phase half-bridges with hardware dead-band insertion. The 64 MHz instruction rate supports field-oriented control (FOC) at 20 kHz PWM. Hardware limit timers (HLT) provide deterministic overcurrent shutdown, critical for safety-rated motor drives.
Recommended
Battery-Powered IoT Edge Nodes
The PIC18F27Q10T-I/SO's XLP (eXtreme Low Power) technology delivers nanoamp-level sleep currents with peripheral functions operating autonomously, making it ideal for battery-powered IoT edge nodes. With 128 KB Flash and 3.5 KB RAM, it runs BLE/Zigbee host stacks or LoRaWAN MAC layers while the 5-bit DAC and ADC2 sample sensors. Energy harvesting designs benefit from the wide 2.3V to 5.5V supply range.
Recommended
Building Automation (HVAC, Lighting)
The PIC18F27Q10T-I/SO powers HVAC and lighting controllers where 128 KB Flash accommodates DALI, BACnet or KNX protocol stacks while 25 I/O pins drive relays, triacs and 0-10V dimming outputs. The integrated comparators enable zero-cross detection for TRIAC phase-control dimming. 5V operation directly interfaces with industrial sensors and actuators without level shifters.
Recommended
Automotive Body Electronics
The PIC18F27Q10T-I/SO is suitable for non-safety automotive body electronics such as seat controllers, mirror adjusters, and interior lighting where LIN bus and PWM dimming are required. Its 64 MHz core handles LIN 2.x slave stacks and the CWG generates complementary PWM for LED drivers. For under-hood applications requiring AEC-Q100, consider PIC18F27Q10-E/SO (extended temperature) variants.
Recommended
Portable Medical Devices
The PIC18F27Q10T-I/SO fits portable medical monitoring devices like glucose meters, pulse oximeters and wearable health patches where low-power sleep and integrated analog are critical. The 10-bit ADC2 with computation averages sensor readings without CPU intervention, the 5-bit DAC drives audio cues, and the 64 MHz core runs displays and BLE stacks. XLP modes extend battery life in continuous-monitoring patches.
Recommended
Consumer Appliance Control
The PIC18F27Q10T-I/SO is widely used in consumer appliances such as washing machines, coffee makers and induction cooktops where cost-effective 8-bit control is required. Its 128 KB Flash stores user interface state machines, the comparators detect zero-cross for TRIAC dimming, and the PWM drives motor speed control. The 5V-tolerant I/O interfaces directly with mains-side optocouplers and triacs.
Recommended
Recommended Products Summary
Engineering reference data for PIC18F27Q10T-I/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC18F26Q10T-I/SO | PIC18F27Q10-I/SO | PIC18F27Q10T-E/SO | PIC18F26Q10-I/SO |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SOIC | 28-SOIC (same) | 28-SOIC (same) | 28-SOIC (same) | 28-SOIC (same) |
| Flash Memory | 128 KB | 64 KB (-50%) | 128 KB (same) | 128 KB (same) | 64 KB (-50%) |
| RAM | 3.5 KB | 3.5 KB (same) | 3.5 KB (same) | 3.5 KB (same) | 3.5 KB (same) |
| Maximum CPU Speed | 64 MHz | 64 MHz (same) | 64 MHz (same) | 64 MHz (same) | 64 MHz (same) |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C | -40C to +85C | -40C to +125C (Extended) | -40C to +85C |
| Packaging Format | Tape & Reel | Tape & Reel | Tray | Tape & Reel | Tray |
| EEPROM | 256 B | 256 B (same) | 256 B (same) | 256 B (same) | 256 B (same) |
| ADC Resolution | 10-bit | 10-bit (same) | 10-bit (same) | 10-bit (same) | 10-bit (same) |
Key Differentiators
- Largest Flash in the PIC18F2xQ10 SOIC-28 family (vs PIC18F26Q10T-I/SO)
- Extended temperature range option available (vs PIC18F27Q10T-I/SO)
- Tape-and-reel packaging for production lines (vs PIC18F27Q10-I/SO)
Design Notes
The PIC18F27Q10T-I/SO supports XLP modes with sleep currents as low as ~50 nA (typical) with Real-Time Clock/Calendar running. For battery-powered designs, configure the MCU to wake on a peripheral interrupt (e.g., ADC threshold or INT pin) rather than a timer overflow to minimize average current draw. Estimated: at 3V supply with one wake event per second, average current is dominated by active time and remains under 10 uA for typical sensor read cycles.
Place a 100 nF decoupling capacitor as close as possible to the VDD pin (pin 10) and another 10 uF bulk capacitor within 1 cm. The SOIC-28 package allows hand-soldering and breadboard prototyping - the wide 7.5 mm body gives adequate pad area for thermal relief. Add a 10 kohm pull-up on the MCLR pin (pin 27) for normal operation, with optional reset button to ground.
Do not confuse the SOIC-28 with SSOP-28 - they share the same pin count and pinout but have different PCB footprints. Always verify the package code suffix (/SO vs /SS) when ordering. Also, the PIC18F27Q10 uses PPS (Peripheral Pin Select) for flexible I/O mapping - peripherals like UART, I2C and SPI can be routed to multiple pins, but enabling PPS locking bits prevents accidental reconfiguration in the field.
Compliance Information
RoHS and REACH compliant per Microchip product page. The PIC18F27Q10 family is not AEC-Q100 qualified - for automotive applications requiring that qualification, consider the PIC18F27Q10-E/SO extended-temperature variant or AEC-Q100 specific PIC18F K-series. Halogen-free status not confirmed in retrieved web data.
