PIC18F27Q10-I/SO - 64MHz 8-bit MCU 128KB Flash | Microchip
MPN: PIC18F27Q10-I/SO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.85 | $2.85 |
| 10 | $2.62 | $26.20 |
| 100 | $2.31 | $231.00 |
| 500 | $2.05 | $1,025.00 |
| 1,000 | $1.85 | $1,850.00 |
PIC18F27Q10-I/SO Overview
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, memory, and I/O peripherals into one package. The PIC architecture is a Harvard-variant RISC design with separate program and data buses, enabling most instructions to execute in a single clock cycle. Within the broader taxonomy, a microcontroller sits at the leaf of the semiconductor hierarchy: MCU -> microcontroller -> embedded processor -> semiconductor. The 'Q10' family suffix denotes Microchip's CIP-rich, low-power family optimized for sensor nodes and real-time control.
Key differentiating features include 25 programmable I/O lines, four 16-bit timers, two I2C, two SPI, and two UART interfaces, plus a hardware DMA controller. The device supports up to 36 MIPS performance at 64MHz, allowing deterministic real-time control loops. On-board 10-bit ADC with up to 24 channels and 5-bit DAC enable sensor conditioning and signal generation without external components, while comparators and zero-cross detection simplify power-conversion feedback paths.
The PIC18F27Q10 architecture combines a 16-bit instruction word with 8-bit data path, retaining the legacy PIC18 instruction set while adding modern peripherals. Internal voltage reference, programmable HLVD (high/low voltage detect), and CRC memory scan support functional-safety design patterns. The XLP Sleep mode draws nanoampere-class current, making the device suitable for battery-powered sensor nodes that must wake intermittently.
Typical applications include industrial sensor nodes, IoT edge devices, consumer appliances with touch sensing, low-cost motor control (small BLDC and stepper drivers), and automotive body modules (with extended-temperature variants). The combination of integrated analog, 5V noise immunity, and 28-SOIC ease-of-manufacturing makes it well-suited to high-volume commercial designs.
When designing with the PIC18F27Q10-I/SO, ensure decoupling capacitors (100nF + 1uF) are placed within 5mm of the VDD pins, and that the MCLR pull-up is correctly implemented per datasheet recommendations. The 64MHz internal oscillator eliminates the external crystal in most applications, reducing BOM cost and PCB area. For low-power designs, leverage the DOZE and PMD peripherals to gate unused modules.
This page synthesizes distributor pricing, drop-in pin-compatible alternatives from the PIC18 family, and practical design notes that complement the manufacturer datasheet with cross-package selection guidance.
Drop-in alternatives for PIC18F27Q10-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 PIC18F27Q10-I/SO (same form factor and footprint) — differing in Package, DAC, ADC, Comparators, PWM Channels.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC18F26Q10-I/SO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18F27K42-I/SO
✅ Drop-In✓ In Stock
$1.95 / Unit
View Datasheet →PIC18F24Q10-I/SO
✅ Drop-In✓ In Stock
$1.08 / Unit
View Datasheet →PIC18F27Q10-I/ML
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18F25Q10-I/SO
✅ Drop-In✓ In Stock
$1.39 / Unit
View Datasheet →PIC18F27Q10-I/SO Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC 8-bit RISC |
| Family | PIC18-Q10 (XLP) |
| Program Memory (Flash) | 128 KB (128K x 8) |
| Data RAM | 3615 bytes |
| Data EEPROM | 256 bytes |
| Maximum CPU Frequency | 64 MHz |
| Supply Voltage (VDD) | 1.8 V to 5.5 V |
| I/O Pins | 25 |
| ADC | 10-bit, up to 24 channels |
| DAC | 5-bit |
| Comparators | Yes (integrated) |
| Timers | 4 x 16-bit |
| UART | 2 |
| SPI | 2 |
| I2C | 2 |
| PWM Channels | Yes (configurable) |
| CIPs | CLC, CCP, CWG, HLT |
| Operating Temperature (Industrial) | -40 C to +85 C |
| Package | 28-pin SOIC (SO) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
PIC18F27Q10-I/SO Pin Configuration
| Pin 1 | MCLR — Master Clear (reset) input, internal pull-up enabled by configuration |
| Pin 2 | RA0 — Digital I/O / analog input AN0 |
| Pin 3 | RA1 — Digital I/O / analog input AN1 |
| Pin 4 | RA2 — Digital I/O / analog input AN2 |
| Pin 5 | RA3 — Digital I/O / analog input AN3 / VREF+ |
| Pin 6 | RA4 — Digital I/O / analog input AN4 |
| Pin 7 | RA5 — Digital I/O / analog input AN5 |
| Pin 8 | RA6 — Digital I/O / oscillator output |
| Pin 9 | RA7 — Digital I/O / oscillator input |
| Pin 10 | VSS — Ground reference |
| Pin 11 | VDD — Positive supply voltage (1.8V to 5.5V) |
| Pin 12 | RB0 — Digital I/O / interrupt-on-change |
| Pin 13 | RB1 — Digital I/O / interrupt-on-change |
| Pin 14 | RB2 — Digital I/O / interrupt-on-change |
| Pin 15 | RB3 — Digital I/O / interrupt-on-change |
| Pin 16 | RB4 — Digital I/O / interrupt-on-change |
| Pin 17 | RB5 — Digital I/O / interrupt-on-change |
| Pin 18 | RB6 — Digital I/O / ICD clock |
| Pin 19 | RB7 — Digital I/O / ICD data |
| Pin 20 | VSS — Ground reference (second) |
| Pin 21 | VDD — Positive supply voltage (second) |
| Pin 22 | RC0 — Digital I/O / analog input AN16 |
| Pin 23 | RC1 — Digital I/O / analog input AN17 |
| Pin 24 | RC2 — Digital I/O / analog input AN18 |
| Pin 25 | RC3 — Digital I/O / analog input AN19 / SCL1 |
| Pin 26 | RC4 — Digital I/O / analog input AN20 / SDA1 |
| Pin 27 | RC5 — Digital I/O / analog input AN21 |
| Pin 28 | RC6 — Digital I/O / analog input AN22 / TX1 |
| Pin 29 | RC7 — Digital I/O / analog input AN23 / RX1 |
Typical Applications
PIC18F27Q10-I/SO is suitable for 7 applications: Industrial Sensor Nodes, IoT Edge Devices, Consumer Appliance Control, Small Motor Control (BLDC/Stepper), Touch-Sensing Interface, Automotive Body Modules, Battery-Powered Data Loggers.
Industrial Sensor Nodes
The PIC18F27Q10-I/SO fits industrial sensor nodes because its 1.8V-5.5V VDD range tolerates 24V industrial bus transients when paired with a TVS and LDO, while 5V GPIO tolerance increases noise immunity on long cable runs. The integrated 10-bit ADC with up to 24 channels reads multiple analog sensors directly, and the on-chip comparators and CWG simplify zero-cross detector circuits for AC-line voltage sensing. With 128KB Flash and 3615 bytes RAM, the MCU handles Modbus RTU, IO-Link, and basic sensor-fusion stacks. XLP Sleep mode at nanoampere current extends battery life to multi-year operation on energy-harvested supplies, critical for remote wireless sensor installations.
Recommended
IoT Edge Devices
For IoT edge devices the PIC18F27Q10-I/SO delivers enough compute (16 MIPS at 64MHz) to run MQTT-SN over UART, BLE HCI command parsing, or local LoRaWAN stack preprocessing. The two UART peripherals allow simultaneous WiFi/BLE module comms and a debug console, while the two I2C and two SPI controllers drive sensors and displays concurrently. Core Independent Peripherals (CLC, CCP, CWG) offload waveform generation to hardware, freeing CPU cycles for application logic. XLP Sleep at nA-class current plus DMA-based wake-up enables duty-cycled edge sensing that runs for years on a single CR2032 coin cell.
Recommended
Consumer Appliance Control
The PIC18F27Q10-I/SO suits consumer appliance control boards (washing machines, dishwashers, small kitchen appliances) because its 5V GPIO drives triac/relay circuits directly without level shifters, reducing BOM cost. The 25 I/O pins handle multiple relay outputs, button matrices, LED indicators, and a 7-segment display simultaneously. The integrated comparators and CWG simplify zero-cross dimmer circuits for lamp or motor speed control. CIPs like CLC implement safety interlocks in hardware, bypassing software latency that could create hazards. The 28-SOIC package is easy to hand-solder for low-volume appliance products.
Recommended
Small Motor Control (BLDC/Stepper)
For small brushless DC (BLDC) and stepper motor control, the PIC18F27Q10-I/SO provides configurable PWM channels, CWG (Complementary Waveform Generator) for dead-band insertion, and CCP for input capture on Hall sensors. The 64MHz clock and 16 MIPS throughput execute field-oriented control (FOC) loops at 10-20kHz, sufficient for small fans, pumps, and CNC spindle motors. The 5V-tolerant I/O directly drives gate-driver logic inputs, while the integrated comparators enable hardware overcurrent protection without software intervention. The 28-SOIC footprint fits compact motor-driver PCBs alongside power stages.
Recommended
Touch-Sensing Interface
The PIC18F27Q10-I/SO supports mTouch capacitive touch sensing via its integrated CTMU (Charge Time Measurement Unit) and ADC, enabling button, slider, and wheel touch interfaces without external touch ICs. The Core Independent Peripherals (CIPs) handle touch scanning in hardware, freeing the CPU for application logic and reducing firmware complexity. 5V GPIO tolerance eliminates level-shifters when interfacing with industrial control panels. The 128KB Flash fits Microchip's mTouch library plus user application code, while the 28-SOIC package simplifies reflow soldering on consumer-product PCBs.
Recommended
Automotive Body Modules
For automotive body control modules (BCM), interior lighting, door modules, and seat controllers, the PIC18F27Q10-I/SO's 5V GPIO tolerance and noise immunity are critical per Microchip's automotive-grade claims. The integrated LIN-compatible UART and PWM channels directly drive body-electronics loads. The CWG peripheral generates complementary PWM with dead-time insertion for solenoid and LED driver stages. For under-hood or extreme-temperature applications, the PIC18F27Q10-E/SO extended-temperature variant is recommended over the -I/SO industrial version. AEC-Q100 qualification requires specifically-marked automotive variants.
Recommended
Battery-Powered Data Loggers
The PIC18F27Q10-I/SO is ideal for portable data loggers (temperature, humidity, vibration, GPS tracking) because its XLP Sleep current at nanoampere levels extends battery life to multi-year operation on a single CR2032 or AA cell. The 128KB Flash stores months of timestamped measurements, while the integrated RTC with external 32.768kHz crystal enables accurate timekeeping. The DMA controller moves ADC samples to RAM without CPU intervention, allowing the core to remain in Sleep between conversions. The 1.8V minimum VDD supports direct Li-ion battery monitoring across the full discharge curve, simplifying power-management design.
Recommended
Recommended Products Summary
Engineering reference data for PIC18F27Q10-I/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC18F26Q10-I/SO | PIC18F27K42-I/SO | PIC18F24Q10-I/SO | PIC18F25Q10-I/SO |
|---|---|---|---|---|---|
| Package | 28-SOIC | 28-SOIC - same | 28-SOIC - same | 28-SOIC - same | 28-SOIC - same |
| Brand | Microchip Technology | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same |
| Flash Memory | 128 KB | 64 KB (-50%) | 128 KB (same) | 16 KB (-87.5%) | 64 KB (-50%) |
| RAM | 3615 bytes | 3615 bytes (same) | 8 KB (+121%) | 3615 bytes (same) | 3615 bytes (same) |
| Max Clock Speed | 64 MHz | 64 MHz (same) | 64 MHz (same) | 64 MHz (same) | 64 MHz (same) |
| Core Independent Peripherals (CIPs) | CLC, CCP, CWG, HLT | CLC, CCP, CWG, HLT (same) | No CLC/CWG (less) | CLC, CCP, CWG, HLT (same) | CLC, CCP, CWG, HLT (same) |
| I/O Pins | 25 | 25 (same) | 25 (same) | 25 (same) | 25 (same) |
| Operating Voltage | 1.8V to 5.5V | 1.8V to 5.5V (same) | 1.8V to 5.5V (same) | 1.8V to 5.5V (same) | 1.8V to 5.5V (same) |
Key Differentiators
- Core Independent Peripherals (CIPs) reduce CPU load (vs PIC18F27K42-I/SO)
- More Flash with same Q10 peripheral set (vs PIC18F26Q10-I/SO)
- XLP Sleep at nanoampere-class current (vs PIC18F24Q10-I/SO)
Design Notes
Estimated power budget at 64MHz active, 3.3V VDD: typical active current is approximately 7mA (about 23mW), and XLP Sleep drops to less than 100nA. For battery-powered designs, duty-cycle the MCU aggressively - keep active time under 1% of total period to extend coin-cell life beyond 1 year. Use PMD (Peripheral Module Disable) registers to gate unused peripherals before entering Sleep.
Place 100nF and 1uF decoupling capacitors within 5mm of each VDD pin (pin 11 and pin 21) with direct via-to-ground-plane connections. For SOIC-28 layouts, route the ICSP header (MCLR/VDD/VSS/RB6/RB7) to a 5-pin 0.1-inch header for in-circuit debugging. Leave room for an optional 32.768kHz crystal on RA6/RA7 if RTC accuracy is required. Keep ADC analog traces away from PWM switching signals to avoid digital noise coupling into measurements.
Do not leave the MCLR pin floating - either tie to VDD through a 10kohm resistor or use the internal pull-up via the CONFIG register. Configuration bits must be set explicitly; an unconfigured part will not start. Watch the VDD rise time (must be monotonic) - if VDD ramps too slowly the BOR circuit may trigger repeatedly. For PICkit programming, ensure the PGM/ICSPDAT pin is not pulled low at start-up or programming will fail.
The 28-SOIC package has lead inductance of approximately 5nH per pin; for high-speed SPI (>10MHz) signals use series damping resistors (22-33ohm) close to the driver. Keep clock traces (RA6/RA7 oscillator) short and symmetric to avoid duty-cycle distortion. For ADC accuracy above 8 bits, route analog and digital ground as separate nets joined at one point near the MCU VSS pin.
Compliance Information
PIC18F27Q10-I/SO is the industrial temperature variant (-40C to +85C). AEC-Q100 qualification is not provided for the -I/SO; automotive designs should select the PIC18F27Q10-E/SO extended-temperature variant or specifically-marked AEC-Q100 parts. RoHS and REACH compliance per Microchip product page.
