PIC18F14Q41-I/SO - 8-bit 64MHz MCU 16KB Flash 20-SOIC | Microchip
MPN: PIC18F14Q41-I/SO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.85 | $2.85 |
| 10 | $2.55 | $25.50 |
| 100 | $2.1 | $210.00 |
| 500 | $1.78 | $890.00 |
| 1,000 | $1.52 | $1,520.00 |
PIC18F14Q41-I/SO Overview
A PIC18 microcontroller is an 8-bit Harvard-architecture RISC MCU from Microchip's PIC18 family, sitting in the broader taxonomy of 8-bit microcontroller -> microcontroller -> embedded processor -> semiconductor. The PIC18 core executes most instructions in a single cycle with a hardware multiplier and a 31-level stack, balancing deterministic real-time control with rich peripheral integration. Within the power management and signal-chain subsystem of a product, the MCU acts as the sensing-and-actuation brain, replacing discrete analog hardware with software-configurable analog blocks.
Key features of the PIC18F14Q41-I/SO include 18 general-purpose I/O pins, an enhanced mid-range core with a C compiler-friendly instruction set, an on-chip op-amp, zero-cross detection, a complementary waveform generator (CWG) for motor and power conversion, and support for 1.8 V to 5.5 V operation. The device integrates a 12-bit differential ADC with oversampling and a computation engine for automated averaging and threshold comparisons.
The PIC18F14Q41 architecture pairs a 64 MHz internal oscillator with peripheral pin select (PPS) remappable I/O, allowing flexible board layouts. Its nanoWatt XLP technology delivers low-power sleep currents in the nanoamp range, supporting battery-backed sensing nodes. The on-chip op-amp, comparators, and DACs enable closed-loop analog control without external amplifiers, reducing BOM cost and PCB area.
Typical applications include sensor signal conditioning, LED lighting control with smooth dimming, low-end motor control (fan, pump, small BLDC), battery-powered IoT nodes, and white-goods user-interface controllers. The compact 20-SOIC package supports hand-solderable prototypes and high-volume automated assembly.
Designers should pay attention to the analog pin assignments and PPS mapping: the on-chip op-amp inputs are shared with specific ADC channels, and the CWG outputs occupy fixed pins. A 100 nF decoupling capacitor as close as possible to VDD, plus a 10 uF bulk capacitor, is recommended.
This page combines authoritative manufacturer specifications, current distributor pricing, drop-in compatible alternatives, and practical design notes that are not assembled in any single source on the web, providing a faster engineering evaluation path than the datasheet alone.
Drop-in alternatives for PIC18F14Q41-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 PIC18F14Q41-I/SO (same form factor and footprint) — differing in Package, ADC, Core Architecture, Program Memory (Flash), DAC.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC18F14Q41-E/SO
✅ Drop-In✓ In Stock
$1.25 / Unit
View Datasheet →PIC18F14Q41T-I/SO
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$0.78 / Unit
View Datasheet →PIC18F14Q41-I/SP
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC18F14Q40-I/SO
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$1.12 / Unit
View Datasheet →PIC18F14Q41-E/SP
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC18F14Q41-I/SO Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC18 8-bit RISC |
| Maximum CPU Frequency | 64 MHz |
| Program Memory (Flash) | 16 KB (16K x 8) |
| Data SRAM | 1 KB (1K x 8) |
| Data EEPROM | 512 bytes (512 x 8) |
| Operating Voltage | 1.8 V to 5.5 V |
| I/O Pins | 18 |
| ADC | 12-bit, ADC2 with computation |
| DAC | 2 x 8-bit DAC |
| PWM | 16-bit PWM |
| On-chip Op-amp | 1 |
| Comparators | Yes (peripheral) |
| Package | 20-pin SOIC (SO) |
| Temperature Grade | Industrial (-40C to +85C) |
| RoHS Status | Compliant |
PIC18F14Q41-I/SO Pin Configuration
| Pin 1 | RA5 — Port A bit 5 / ADC2 channel |
| Pin 2 | RA4 — Port A bit 4 |
| Pin 3 | RA3 — Port A bit 3 / MCLR |
| Pin 4 | RA2 — Port A bit 2 |
| Pin 5 | RA1 — Port A bit 1 / OPA1IN1- |
| Pin 6 | RA0 — Port A bit 0 / OPA1OUT |
| Pin 7 | VSS — Ground |
| Pin 8 | RA7 — Port A bit 7 / OPA1IN1+ |
| Pin 9 | RA6 — Port A bit 6 |
| Pin 10 | RC0 — Port C bit 0 |
| Pin 11 | RC1 — Port C bit 1 |
| Pin 12 | RC2 — Port C bit 2 |
| Pin 13 | RC3 — Port C bit 3 / SCL |
| Pin 14 | RC4 — Port C bit 4 / SDA |
| Pin 15 | RC5 — Port C bit 5 |
| Pin 16 | RC6 — Port C bit 6 |
| Pin 17 | RC7 — Port C bit 7 |
| Pin 18 | VSS — Ground (second) |
| Pin 19 | VDD — Positive supply voltage |
| Pin 20 | VDD — Positive supply voltage (second) |
Typical Applications
PIC18F14Q41-I/SO is suitable for 6 applications: IoT Sensor Signal Conditioning, LED Lighting and Dimming Control, Small Motor and Fan Control, Battery-Powered Wearable Devices, White Goods User Interface Controllers, Industrial Process Sensor Transmitters.
IoT Sensor Signal Conditioning
The PIC18F14Q41-I/SO is ideal for IoT sensor nodes that need integrated analog front-end. Its on-chip op-amp provides gain for bridge sensors or thermistors, and the 12-bit ADC2 with computation handles oversampling and averaging, achieving effective >16-bit resolution. The 1.8 V minimum VDD lets the device run from a single Li-ion cell, and nanoWatt XLP sleep currents below 1 uA extend battery life. The same 20-SOIC board can be reused across product variants, reducing design time.
Recommended
LED Lighting and Dimming Control
The PIC18F14Q41-I/SO drives LED lighting with smooth dimming via its 16-bit PWM and complementary waveform generator (CWG). The dual 8-bit DACs generate analog references for constant-current drivers while the ADC2 monitors LED current and temperature. Operating up to 5.5 V, the device can be powered directly from 5 V USB or 24 V buck-derived rails. With 18 GPIO it supports multiple channels and user interfaces without external expanders.
Recommended
Small Motor and Fan Control
For low-end motor and fan control, the PIC18F14Q41-I/SO provides closed-loop PID via the 16-bit PWM and on-chip op-amp used as a current-sense amplifier. The CWG block generates complementary drive signals with programmable dead time for H-bridge FETs. The ADC2 samples back-EMF or shunt voltage synchronously to PWM, enabling sensorless BLDC commutation in some topologies. The 64 MHz core executes control loops in tens of microseconds, supporting 25 kHz+ PWM.
Recommended
Battery-Powered Wearable Devices
The PIC18F14Q41-I/SO suits wearables thanks to XLP nanoWatt technology. Sleep current in the nanoamp range plus fast wake-up from RTC or ADC threshold interrupts preserves battery life. The 1.8 V VDD minimum enables direct operation from a single coin cell or Li-ion. The 20-SOIC package is small enough for compact wearables and supports hand-rework. Integrated DACs and op-amp remove the need for separate analog ICs for sensor biasing.
Recommended
White Goods User Interface Controllers
The PIC18F14Q41-I/SO functions as the user-interface controller in white goods such as washing machines, dishwashers, and ovens. The 18 GPIO drive keypads, LCDs, and LED indicators, while the ADC2 reads temperature, level, and humidity sensors. The 16-bit PWM controls motor speed, buzzer volume, and display backlight brightness. Operating at 5 V simplifies integration with mains-derived power supplies and electromechanical relays.
Recommended
Industrial Process Sensor Transmitters
Industrial 4-20 mA sensor transmitters benefit from the PIC18F14Q41-I/SO's 12-bit ADC2 with differential inputs and oversampling, plus the on-chip op-amp for signal conditioning. The wide 1.8 V to 5.5 V VDD accommodates loop-powered designs. The 64 MHz core runs HART or IO-Link software stacks when needed. The industrial temperature grade (-40C to +85C) and 20-SOIC footprint suit harsh DIN-rail mounted assemblies.
Recommended
Recommended Products Summary
Engineering reference data for PIC18F14Q41-I/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC18F14Q41-E/SO | PIC18F14Q41T-I/SO | PIC18F14Q40-I/SO |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 20-SOIC | 20-SOIC - same | 20-SOIC - same | 20-SOIC - same |
| Flash Memory | 16 KB | 16 KB | 16 KB | 8 KB |
| SRAM | 1 KB | 1 KB | 1 KB | 512 B |
| EEPROM | 512 B | 512 B | 512 B | 256 B |
| Max CPU Frequency | 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 |
| Temperature Grade | Industrial -40C to +85C | Extended -40C to +125C | Industrial -40C to +85C | Industrial -40C to +85C |
| On-chip Op-amp | Yes (1) | Yes (1) | Yes (1) | No |
Key Differentiators
- Integrated on-chip operational amplifier (vs PIC18F14Q40-I/SO)
- 16 KB Flash vs 8 KB Flash (vs PIC18F14Q40-I/SO)
- PIC18-Q41 family with CWG and ADC2 with computation (vs PIC18F14K22-I/SO)
Design Notes
Place a 100 nF decoupling capacitor as close as possible to the VDD pins (pins 19 and 20) and a 10 uF bulk capacitor within 1 cm. For battery-powered designs operating at 1.8 V, add a ferrite bead or small inductor on VDD to suppress noise from switching peripherals. Brown-out reset (BOR) should be enabled in the configuration words to prevent code corruption during low-voltage events; the default BOR threshold of 2.85 V is suitable for most 3.3 V and 5 V systems.
Route the analog signals (OPA1IN+, OPA1IN-, OPA1OUT) away from digital switching traces to minimize crosstalk. Use a ground pour on the top layer under the SOIC and stitch vias around the perimeter. The exposed thermal pad is not present on the 20-SOIC, but providing a copper area on the bottom layer improves heat dissipation if the device drives continuous GPIO current. Keep trace lengths under 25 mm for the ADC2 reference pin to limit reference noise pickup.
Do not assume the on-chip op-amp can drive low-impedance loads; check the datasheet for the rated output current and capacitive drive capability before using it as a general-purpose buffer. Peripheral pin select (PPS) mapping must be configured before enabling peripherals or the pin will remain in a default state. Avoid using ADC2 channels that share pins with OPA1 inputs while the op-amp is active, since simultaneous switching can inject crosstalk. The ICSPDAT/ICSPCLK pins must be accessible for in-circuit programming; do not route them to inaccessible test points only.
Compliance Information
Industrial temperature grade (-40C to +85C). RoHS and REACH compliant per Microchip product page; PIC18F14Q41 family is not AEC-Q100 qualified - choose PIC18F14Q41-E/SO variant for automotive extended-temperature applications.
