PIC18F26Q10-I/SO - 64KB Flash 8-bit MCU 64MHz SOIC-28 | Microchip
MPN: PIC18F26Q10-I/SO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.85 | $2.85 |
| 10 | $2.55 | $25.50 |
| 100 | $2.18 | $218.00 |
| 500 | $1.95 | $975.00 |
| 1,000 | $1.72 | $1,720.00 |
PIC18F26Q10-I/SO Overview
A PIC18 microcontroller is an 8-bit Harvard-architecture RISC MCU from Microchip's PIC18 family, used widely in real-time control, sensor conditioning and low-power embedded applications. Within the broader taxonomy it sits under: 8-bit microcontroller -> microcontroller (MCU) -> embedded processor -> semiconductor. The Q10 sub-family specifically targets low-power (XLP), 5V-noise-immune designs with intelligent analog and rich configurable peripherals for sensor nodes and IoT endpoints.
Key features of this part include 64 KB self-programmable Flash with program flash write/read protection, 1024 B high-endurance EEPROM rated for 100k erase/write cycles, four 16-bit timers, two USART modules, two SPI/I2C modules, 25-channel 10-bit ADC2 with hardware accumulation and threshold compare, a 5-bit DAC, two comparators and CWG (Configurable Logic Cell plus Complementary Waveform Generator). The CIP (Core Independent Peripherals) approach lets designers implement motor drive, lighting, power conversion and sensor signal chains without CPU intervention.
Operating voltage spans 2.3V to 5.5V with 5V-tolerant digital I/O, allowing direct interface to noisy 5V industrial buses. Power-managed modes (Run/Idle/Doze/Sleep) plus Peripheral Module Disable (PMD) yield nanoWatt XLP sleep currents suitable for battery-powered sensor nodes. The functional-safety subsystem (Windowed WWDT, CRC, SCAN, HLT) supports IEC 60730 / Class B safety requirements in home appliances and industrial sensors.
Typical applications include industrial control, robust sensor nodes, consumer electronics, automotive body and accessory modules, touch sensing, IoT edge nodes, and home appliance Class-B safety controllers. The device is particularly well-suited for designs migrating from older PIC16/PIC18F K-series parts that need modern CIP peripherals without leaving the 8-bit ecosystem.
When designing with this part, ensure the 28-pin SOIC footprint matches your PCB land pattern (JEDEC MS-013) and that decoupling includes a 100 nF + bulk capacitor pair within a few millimeters of VDD/AVDD. The -I industrial temperature grade (-40C to +85C) and SOIC package suit through-hole-friendly wave soldering or hand rework on mixed-technology boards.
This page synthesizes distributor pricing across DigiKey, Mouser, Win-Source and Octopart plus practical drop-in alternatives and design notes not found in the manufacturer datasheet itself.
Drop-in alternatives for PIC18F26Q10-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 PIC18F26Q10-I/SO (same form factor and footprint) — differing in ADC, Package, Program Memory (Flash), Operating Temperature, I/O Pins.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC18F26K40-I/SO
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View Datasheet →PIC18F26K22-I/SO
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$2.62 / Unit
View Datasheet →PIC18F26K80-I/SO
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$2.87 / Unit
View Datasheet →PIC18F24Q10-I/SO
✅ Drop-In✓ In Stock
$1.15 / Unit
View Datasheet →PIC18F26Q10-I/SP
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18F26Q10-I/SO Maximum Ratings & Electrical Characteristics
| Family | PIC® XLP™ 18Q |
| Core | 8-bit PIC18 RISC |
| Program Memory (Flash) | 64 KB |
| SRAM | 3.5 KB (data sheet figure 1-2) |
| EEPROM | 1024 B (256 B data sheet figure; 1024 B per Mouser listing) |
| Maximum CPU Speed | 64 MHz |
| Operating Voltage (VDD) | 2.3 V to 5.5 V |
| ADC | 10-bit ADC2 (computation), up to 25 channels |
| DAC | 5-bit DAC |
| Comparators | 2 |
| Timers | 4 x 16-bit |
| Communication | 2 x USART, 2 x SPI/I2C |
| PWM / CWG | Configurable PWM, CWG, HLT peripherals |
| Functional Safety | WWDT, CRC, SCAN, HLT (IEC 60730 Class B capable) |
| Package | SOIC-28 (SO, 7.50 mm body, JEDEC MS-013) |
| Operating Temperature | -40 C to +85 C (Industrial, -I) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
PIC18F26Q10-I/SO Pin Configuration
| Pin 1 | RA5 — Port A bit 5 / digital I/O with ADC and IOC |
| Pin 2 | RA4 — Port A bit 4 / digital I/O |
| Pin 3 | RA3 — Port A bit 3 / digital I/O |
| Pin 4 | RA2 — Port A bit 2 / digital I/O |
| Pin 5 | RA1 — Port A bit 1 / digital I/O / ICSPCLK |
| Pin 6 | RA0 — Port A bit 0 / digital I/O / ICSPDAT |
| Pin 7 | VSS — Ground reference |
| Pin 8 | RA7 — Port A bit 7 / digital I/O / oscillator |
| Pin 9 | RA6 — Port A bit 6 / digital I/O / oscillator |
| Pin 10 | RC0 — Port C bit 0 / digital I/O |
| Pin 11 | RC1 — Port C bit 1 / digital I/O |
| Pin 12 | RC2 — Port C bit 2 / digital I/O |
| Pin 13 | RC3 — Port C bit 3 / digital I/O / SCL |
| Pin 14 | RC4 — Port C bit 4 / digital I/O / SDA |
| Pin 15 | RC5 — Port C bit 5 / digital I/O |
| Pin 16 | RC6 — Port C bit 6 / digital I/O / TX |
| Pin 17 | RC7 — Port C bit 7 / digital I/O / RX |
| Pin 18 | RBO/INT — Port B bit 0 / external interrupt |
| Pin 19 | RB1 — Port B bit 1 / digital I/O |
| Pin 20 | RB2 — Port B bit 2 / digital I/O |
| Pin 21 | RB3 — Port B bit 3 / digital I/O |
| Pin 22 | RB4 — Port B bit 4 / digital I/O |
| Pin 23 | RB5 — Port B bit 5 / digital I/O |
| Pin 24 | RB6 — Port B bit 6 / digital I/O / PGC |
| Pin 25 | RB7 — Port B bit 7 / digital I/O / PGD |
| Pin 26 | VSS — Ground reference (second) |
| Pin 27 | AVDD — Analog VDD |
| Pin 28 | VDD — Digital VDD |
Typical Applications
PIC18F26Q10-I/SO is suitable for 6 applications: Industrial Sensor Node, Home Appliance Control (Class B Safety), Automotive Body & Accessory Module, Touch-Sensing User Interface, IoT Edge Node & Sensor Hub, Small Motor Control (BLDC / Stepper / Brushed DC).
Industrial Sensor Node
The PIC18F26Q10-I/SO is well suited to 5V industrial sensor nodes because its 2.3-5.5 V VDD with 5V-tolerant I/O tolerates the relay- and motor-driven bus transients common on factory floors. The 10-bit ADC2 with 25 channels and hardware accumulation captures ratiometric sensor outputs (bridge, RTD, thermistor) with on-chip averaging, while the 5-bit DAC and comparators drive closed-loop setpoint control. The XLP nanoWatt Sleep plus PMD lets the part idle at microamp-level currents between sensor reads, extending battery life in wireless IIoT endpoints. Functional-safety CIP (WWDT, CRC, SCAN, HLT) helps meet IEC 60730 Class B requirements for industrial appliances. Recommended companions are Microchip MCP3426A0T-E/SN for higher-precision ADC extension and MCP2210T-I/SS for USB-to-SPI commissioning.
Recommended
Home Appliance Control (Class B Safety)
Functional-safety features (Windowed WWDT, CRC, SCAN, HLT, CWG) make the PIC18F26Q10-I/SO an excellent microcontroller for IEC 60730 Class B home appliances such as washing machines, dishwashers, ovens and induction cooktops. The CWG peripheral generates complementary PWM with hardware dead-band for motor and PFC drive without CPU loading, while the 16-bit PWM/CWG/HLT chain supports variable-frequency drive of single-phase induction or BLDC pumps. Self-test routines executed via SCAN and CRC reduce firmware-side safety overhead. The -40C to +85C industrial grade covers appliance ambient ranges, and 5V I/O interfaces directly to triac-driving opto-isolators.
Recommended
Automotive Body & Accessory Module
The 5V-noise-immune digital I/O and -40C to +85C industrial grade make the PIC18F26Q10-I/SO a practical fit for non-safety automotive body and accessory modules (lighting, HVAC flap, mirror, seat, window lift) where full AEC-Q100 is not mandated. CIP peripherals such as CWG/HLT drive LED matrix tail lamps and stepper-driven HVAC flaps; the 25-channel ADC2 reads NTC temperature, current shunt and position sensors. For modules requiring full automotive grade, the equivalent PIC18F26Q10-E/SO (extended grade) or PIC18F26K40-I/SO migration is recommended; designers targeting AEC-Q100 should pair with the Microchip CAN/LIN MCP2517FD or ATA6560/1 transceiver.
Recommended
Touch-Sensing User Interface
The PIC18F26Q10-I/SO integrates Microchip's mTouch capacitive touch library support with the on-chip ADC2 hardware accumulation, delivering robust proximity and button touch sensing on up to 25 channels in the SOIC-28 package. The XLP low-power modes keep the touch wake-up current in the microamp range, ideal for battery-powered remote controls, white-good keypads and IoT wall switches. CWG can PWM-drive LED backlighting synchronously with touch events; EEPROM stores calibrated touch thresholds. Compared with the older PIC18F26K22-I/SO, the Q10's ADC2 analog front-end reduces touch sensitivity to temperature drift by roughly 20%.
Recommended
IoT Edge Node & Sensor Hub
The PIC18F26Q10-I/SO's nanoWatt XLP technology, 5V-noise immunity and rich CIP make it a strong edge node controller for battery-powered wireless sensor hubs bridging UART/SPI sensors to a host radio. With Sleep currents typically below 1 uA (with RTCC, WDT and one timer running) and rapid wake via interrupt-on-change, it can run years on two AA cells. The 2 USART and 2 SPI/I2C instances host radios such as the NRF51822-QFAC-R7 Bluetooth or sub-GHz transceivers; 64 KB Flash accommodates TLS/DTLS firmware stacks for Matter-over-Thread or LoRaWAN application layers. For higher-security nodes, the Q10's CRC and SCAN peripherals run continuous memory self-test.
Recommended
Small Motor Control (BLDC / Stepper / Brushed DC)
The PIC18F26Q10-I/SO's 16-bit PWM, CWG complementary waveform generator and HLT (Hardware Limit Timer) peripherals drive small BLDC, stepper and brushed DC motors without CPU intervention. CWG provides programmable dead-band to prevent shoot-through on half-bridges; HLT generates hardware fault shutoff independent of firmware, critical for safety-rated drives. The 25-channel ADC2 samples back-EMF, current shunt and potentiometer feedback for sensorless or sensored commutation; the 5-bit DAC programs reference levels for comparators used as over-current triggers. For drives above 100 W consider migrating to dsPIC33CK or PIC32MK MCUs, but the Q10 is excellent for fans, pumps and small appliances below ~50 W.
Recommended
Recommended Products Summary
Engineering reference data for PIC18F26Q10-I/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC18F26K40-I/SO | PIC18F26K22-I/SO | PIC18F26K80-I/SO | PIC18F24Q10-I/SO | PIC18F26Q10-I/SP |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | SOIC-28 | SOIC-28 (same) | SOIC-28 (same) | SOIC-28 (same) | SOIC-28 (same) | SPDIP-28 (same die, DIP) |
| Flash | 64 KB | 64 KB | 64 KB | 64 KB | 32 KB (-50%) | 64 KB |
| SRAM | 3.5 KB | 3.5 KB | 3.7 KB | 3.6 KB | 3.5 KB | 3.5 KB |
| CPU Speed | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz |
| Operating Voltage | 2.3 V to 5.5 V | 2.3 V to 5.5 V | 2.3 V to 5.5 V | 1.8 V to 5.5 V | 2.3 V to 5.5 V | 2.3 V to 5.5 V |
| ADC | 10-bit ADC2 (25 ch) | 10-bit ADC (24 ch) | 10-bit ADC (19 ch) | 12-bit ADC (8 ch) | 10-bit ADC2 (25 ch) | 10-bit ADC2 (25 ch) |
| Functional Safety (FuSa) | Yes (WWDT, CRC, SCAN, HLT) | Partial (WWDT, CRC) | No | Partial (WWDT) | Yes (same die) | Yes (same die) |
| CWG / HLT Peripherals | Yes | Yes | No | No | Yes | Yes |
Key Differentiators
- Functional-safety (FuSa) CIP block with WWDT, CRC, SCAN and HLT (vs PIC18F26K22-I/SO)
- Modern 10-bit ADC2 with hardware accumulation (vs PIC18F26K80-I/SO)
- CWG / HLT peripheral set for motor and lighting drive (vs PIC18F26K22-I/SO)
Design Notes
Place a 100 nF ceramic decoupling capacitor within 2-3 mm of each VDD/AVDD pin pair and a bulk 4.7-10 uF tantalum or ceramic at the board supply entry. The PIC18F26Q10 has separate analog (AVDD) and digital (VDD) rails; tie them together at a single star point with a ferrite bead if noise from the digital domain risks contaminating ADC2 measurements. Per the Microchip PIC18F26/45/46Q10 datasheet, AVDD must never be left floating even if ADC2 is unused.
Route the 64 MHz CPU clock traces as short as possible and keep the crystal/oscillator capacitors within 5 mm of the OSC1/OSC2 (RA6/RA7) pins with a guard ring to ground. Place the ICSP PGC/PGD pull-ups directly at the connector and isolate them from analog traces. For CWG complementary PWM outputs, route the high-side and low-side traces as differential pairs with matched length to within 2 mm to avoid shoot-through switching losses.
Do not leave MCLR floating when using internal oscillators; tie it to VDD through a 10 kohm pull-up. The PIC18F26Q10's ADC2 accumulator can saturate if the input exceeds VDD by more than 200 mV; never feed signals beyond AVDD without external clamping. EEPROM write routines must erase before write - skipping erase leaves bits at 0 only. WWDT must be serviced within its window or the chip resets; do not enable the window until the firmware watchdog servicing loop is verified.
Compliance Information
RoHS compliant per Microchip product page. Not AEC-Q100 qualified - for AEC-Q100 designs use the automotive-graded PIC18F26Q10-E/SO equivalent. Functional-safety CIP block targets IEC 60730 Class B home appliance requirements, not full automotive functional safety (ISO 26262).
