PIC18F14Q41-I/P - 8-bit MCU, 16KB Flash, 64MHz, 20-PDIP | Microchip
MPN: PIC18F14Q41-I/P ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.1 | $2.10 |
| 10 | $1.89 | $18.90 |
| 100 | $1.68 | $168.00 |
| 500 | $1.49 | $745.00 |
| 1,000 | $1.32 | $1,320.00 |
PIC18F14Q41-I/P Overview
An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data path and an integrated CPU core, Flash program memory, RAM, and a fixed set of peripherals. It sits within the broader hierarchy: 8-bit MCU -> microcontroller -> embedded processor -> semiconductor. The PIC18 architecture extends the baseline PIC16 instruction set with C-friendly addressing, a hardware multiplier, and a linear program memory map, making it well suited to mid-complexity firmware in industrial, consumer, and IoT endpoints.
Key features of the PIC18F14Q41-I/P include an on-chip operational amplifier, a 12-bit differential Analog-to-Digital Converter with Computation (ADCC), an 8-bit DAC, a 16-bit PWM module, DMA-driven data movement, UART, SPI, and I2C interfaces, plus Peripheral Pin Select (PPS) for flexible signal routing. The device operates across an industrial temperature range, supporting harsh-environment deployments. The 20-pin PDIP package allows easy prototyping and breadboard work while exposing the full peripheral set.
Technically, the PIC18F14Q41 implements a Harvard architecture with separate program and data buses, a 16-bit instruction word, and a vectored interrupt controller with multiple priority levels. The 12-bit ADCC supports oversampling and averaging in hardware, offloading noise reduction from the CPU. PPS remaps most digital peripherals onto a wide choice of I/O pins, simplifying PCB routing when multiple functions must share a limited pin budget.
Typical applications include sensor signal conditioning, closed-loop motor and lighting control, general-purpose embedded control, small user-interface controllers, and battery-powered IoT nodes that benefit from the integrated op-amp and high-resolution ADC. The combination of DMA, ADCC, and 16-bit PWM enables responsive control loops without burdening the core.
When designing with this part, validate that the 20-pin PDIP package offers sufficient I/O for the application and confirm the device's supply-voltage range against the chosen analog reference. PPS should be configured in code at startup to avoid bus contention. This page synthesizes distributor pricing, package-equivalent Microchip variants, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for PIC18F14Q41-I/P — 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/P (same form factor and footprint) — differing in Program Memory (Flash), PWM, ADC, Core Architecture, DAC.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC18F14Q40-I/P
✅ Drop-In✓ In Stock
$0.89 / Unit
View Datasheet →PIC18F16Q41-I/P
✅ Drop-In✓ In Stock
$1.9 / Unit
View Datasheet →PIC18F14Q41-E/P
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC18F14Q41-I/SO
✅ Drop-In✓ In Stock
$1.52 / Unit
View Datasheet →PIC18F14K22-I/P
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC18F14Q41-I/P Maximum Ratings & Electrical Characteristics
| Product Family | PIC18-Q41 |
| Core Architecture | PIC18 (8-bit RISC, Harvard) |
| Maximum CPU Frequency | 64 MHz |
| Program Memory (Flash) | 16 KB |
| Data RAM | 1 KB |
| Data EEPROM | 512 bytes |
| Package | 20-pin PDIP (P) |
| Mounting Type | Through-Hole |
| Operating Temperature Range | -40C to +85C (Industrial, I grade) |
| ADC | 12-bit ADCC (differential, with computation) |
| DAC | 8-bit |
| On-chip Operational Amplifier | Yes |
| PWM | 16-bit PWM module |
| DMA Controller | Yes |
| Peripheral Pin Select (PPS) | Yes |
| Communication Interfaces | UART, SPI, I2C |
| MSL Level | Not applicable (through-hole PDIP) |
PIC18F14Q41-I/P Pin Configuration
| Pin 1 | RA0 — Analog/Digital I/O; ADC input |
| Pin 2 | RA1 — Analog/Digital I/O; ADC input |
| Pin 3 | RA2 — Analog/Digital I/O; ADC input |
| Pin 4 | RA3 — Analog/Digital I/O; ADC input |
| Pin 5 | RA4 — Analog/Digital I/O |
| Pin 6 | RA5 — Analog/Digital I/O |
| Pin 7 | VSS — Ground |
| Pin 8 | RB4 — Digital I/O |
| Pin 9 | RB5 — Digital I/O |
| Pin 10 | RB6 — Digital I/O; ICSPCLK |
| Pin 11 | RB7 — Digital I/O; ICSPDAT |
| Pin 12 | VDD — Positive supply |
| Pin 13 | RA6 — Digital I/O; oscillator |
| Pin 14 | RA7 — Digital I/O; oscillator |
| Pin 15 | MCLR — Master Clear (reset) |
| Pin 16 | RC0 — Digital I/O |
| Pin 17 | RC1 — Digital I/O |
| Pin 18 | RC2 — Digital I/O |
| Pin 19 | RC3 — Digital I/O |
| Pin 20 | RC4 — Digital I/O |
Typical Applications
PIC18F14Q41-I/P is suitable for 6 applications: Industrial Sensor Signal Conditioning, Closed-Loop Motor and LED Control, Battery-Powered IoT Endpoints, Automotive Body and Interior Modules, User Interface and HMI Controllers, Test, Measurement and Data Acquisition.
Industrial Sensor Signal Conditioning
The PIC18F14Q41-I/P is well matched to industrial sensor signal conditioning because of its on-chip operational amplifier, 12-bit ADCC with computation, and 8-bit DAC, which together eliminate most external analog components. With 16 KB of Flash and 1 KB of RAM, the MCU can run calibration routines, linearization math, and digital filtering while keeping deterministic loop times at 64 MHz. Place the MCU between a bridge sensor (load cell, strain gauge) and a host PLC or HMI; the integrated op-amp drives the bridge, and the ADCC samples with hardware averaging to suppress mains-frequency noise. This integration reduces BOM cost and PCB area compared to discrete op-amp + external ADC solutions.
Recommended
Closed-Loop Motor and LED Control
The PIC18F14Q41-I/P suits closed-loop DC motor and LED lighting control thanks to its 16-bit PWM module, DMA, and 12-bit ADCC, which together enable high-resolution feedback control without CPU intervention. At 64 MHz the part can drive 16-bit PWM at sub-microsecond resolution while simultaneously sampling current or light sensors through the ADCC, with DMA offloading the data movement. The integrated op-amp can be used as a transimpedance amplifier for photodiode feedback in constant-luminance LED drivers. Its 20-pin PDIP package makes breadboard iteration fast during tuning of PID coefficients before committing to surface-mount variants for production.
Recommended
Battery-Powered IoT Endpoints
The PIC18F14Q41-I/P fits battery-powered IoT endpoints that need integrated analog front-ends, DMA to keep the CPU asleep, and flexible PPS for signal routing. While not the lowest-power 8-bit part available, its integrated op-amp and 12-bit ADCC enable direct sensor interfacing with fewer external components - critical when PCB area and BOM count are constrained. UART/SPI/I2C support makes it easy to attach radio modules, and the 1 KB RAM is sufficient for small protocol buffers. Use the 16-bit PWM for low-battery LED indicators and the 8-bit DAC for bias-voltage generation on sensor bridges.
Recommended
Automotive Body and Interior Modules
The PIC18F14Q41-I/P can be deployed in non-safety automotive body and interior modules such as ambient lighting controllers, seat-position memory, and HVAC damper drives. Its integrated 16-bit PWM and 12-bit ADCC allow precise LED dimming and motor positioning without external driver chips in many cases. The Industrial (-40C to +85C) operating range covers interior cabin environments, and the on-chip op-amp simplifies current-sense feedback for LED strings. Designers targeting AEC-Q100-qualified applications should migrate to the automotive-grade PIC18F14Q41 variants or to AEC-Q100 PIC18 siblings.
Recommended
User Interface and HMI Controllers
The PIC18F14Q41-I/P is a good fit for small user-interface controllers such as appliance front panels, simple touch-button interfaces, and rotary-knob encoders, where its PPS flexibility simplifies PCB layout and its ADCC handles analog inputs from potentiometers or thermistors. The 20-pin PDIP package is convenient for prototype UI boards. UART/SPI/I2C allow connection to a main controller or display module, while the 16 KB Flash supports localized UI logic, button debouncing, and graphic state machines without taxing a host processor.
Recommended
Test, Measurement and Data Acquisition
The PIC18F14Q41-I/P is suitable for portable test, measurement, and data-acquisition instruments that demand high-resolution analog sampling and flexible digital connectivity. The 12-bit ADCC supports hardware oversampling, the on-chip op-amp provides first-stage gain for low-level signals, and the DMA controller can stream ADC results to RAM without CPU intervention. UART/SPI/I2C interfaces let the MCU push results to an LCD, USB bridge, or wireless module. The 20-pin PDIP through-hole package allows field-replaceable instrumentation modules.
Recommended
Recommended Products Summary
Engineering reference data for PIC18F14Q41-I/P — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC18F14Q40-I/P | PIC18F16Q41-I/P | PIC18F14Q41-E/P | PIC18F14Q41-I/SO | PIC18F14K22-I/P |
|---|---|---|---|---|---|---|
| Package | 20-pin PDIP | 20-pin PDIP - same | 20-pin PDIP - same | 20-pin PDIP - same | 20-pin SOIC - SMD variant | 20-pin PDIP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory (Flash) | 16 KB | 8 KB | 16 KB | 16 KB | 16 KB | 16 KB |
| Data RAM | 1 KB | 512 B | 1 KB | 1 KB | 1 KB | 512 B |
| ADC | 12-bit ADCC | 12-bit ADCC | 12-bit ADCC | 12-bit ADCC | 12-bit ADCC | 10-bit ADC |
| On-chip Op-Amp | Yes | Yes | Yes | Yes | Yes | No |
| DMA | Yes | Yes | Yes | Yes | Yes | No |
| PPS | Yes | Yes | Yes | Yes | Yes | No |
| Max CPU Frequency | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz |
Key Differentiators
- Integrated on-chip operational amplifier reduces external analog BOM (vs PIC18F14K22-I/P)
- 12-bit ADCC with computation vs 10-bit legacy ADC (vs PIC18F14K22-I/P)
- DMA controller offloads peripheral-to-memory transfers (vs PIC18F14K22-I/P)
- Peripheral Pin Select (PPS) simplifies PCB routing (vs PIC18F14Q41-I/P fixed-pinout alternative)
Design Notes
Place a 100 nF decoupling capacitor as close as possible to the VDD pin and a 10 uF bulk capacitor near the MCU. The PIC18F14Q41 supports a wide supply range, but its analog performance (op-amp, ADCC) benefits from a clean, low-noise rail. If the application uses a switching regulator upstream, add an LC or ferrite-bead filter before the MCU supply pin to suppress switching ripple that would otherwise couple into the analog front-end.
Route the analog signals (op-amp inputs/output, ADC inputs, DAC output) away from the PWM and digital switching traces to minimize coupling. Use a ground pour on the top layer and stitch vias around the analog section. The 20-pin PDIP allows generous spacing, but keep the analog traces short and surrounded by ground to preserve ADCC accuracy at 12 bits.
Always configure PPS before enabling peripherals - the default pin mapping may not match your PCB layout, and unconfigured peripherals will not function. Also, ensure the MCLR pin is pulled high through a 10 kohm resistor (do not leave it floating) or the part will randomly reset. When migrating from the PIC18F14K22, note that the older part lacked DMA and PPS, so legacy code that hard-coded peripheral-to-pin mappings must be updated.
At 64 MHz with all peripherals active, the PIC18F14Q41-I/P draws roughly 10-15 mA from VDD. The 20-pin PDIP package has excellent thermal dissipation through the leads; in most cases no additional heatsinking is needed. Estimated: at 25 C ambient and 15 mA total supply current at 5 V (75 mW dissipation), junction temperature rise above ambient is negligible for industrial temperature grades.
Compliance Information
RoHS/REACH/AEC-Q100 status not present in the provided web data; flagged as [DATA_NEEDED] in the specs array. Industrial temperature grade (I) specified for the I/P part number suffix.
