PIC18F06Q41-I/ST - 64KB Flash 8-bit MCU 14-TSSOP | Microchip
MPN: PIC18F06Q41-I/ST ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.78 | $1.78 |
| 10 | $1.61 | $16.10 |
| 100 | $1.43 | $143.00 |
| 500 | $1.27 | $635.00 |
| 1,000 | $1.12 | $1,120.00 |
PIC18F06Q41-I/ST Overview
An 8-bit microcontroller (MCU) is a microprocessor whose data path, registers, and ALU operate on 8 bits at a time; it sits inside the broader taxonomy of microcontrollers -> embedded processors -> semiconductors -> integrated circuits. 8-bit MCUs are favored for cost-sensitive, deterministic, low-power applications because the CISC-style PIC18 instruction set keeps interrupt latency short and code density high, while the Q41 family layers modern analog and CIP (Core Independent Peripheral) blocks onto the legacy architecture.
Key features include 64MHz operation (16 MIPS), 12-bit ADCC with up to 22 channels (shared with package pins), two 8-bit DACs, an on-chip op-amp, configurable logic cells, multiple 16-bit PWMs with complementary outputs, and CIP peripherals that automate capacitive voltage divider (CVD) touch sensing without CPU intervention. Memory-protection, hardware limit timers, and math accelerators further reduce firmware load.
The Q41 silicon uses a CIP-rich architecture that lets peripherals (ADC, PWM, op-amp, CLC) cooperate without waking the CPU, enabling deterministic sub-microsecond control loops in motor, lighting, and sensor-conditioning designs. The 12-bit ADCC oversampling/threshold block performs averaging and decision logic in hardware, allowing unattended sensor polling at very low average current.
Typical applications include capacitive touch user interfaces, LED lighting drivers, sensor signal conditioning, low-cost motor control (BLDC/PMSM FOC with external gate drivers), battery-powered IoT edge nodes, and small home appliances. The integrated op-amp plus dual DAC lets a single MCU implement analog front-end plus actuator drive.
When designing with this part, note that the 14-pin TSSOP exposes a limited I/O count (about 12 usable GPIO once programming and crystal pins are reserved), so plan pin assignments before schematic capture. Always use the latest PIC18-Q41 family programming spec and errata before locking production firmware.
This page synthesizes verified distributor pricing, drop-in TSSOP-14 alternatives from the same PIC18-Q41 family, and practical design notes not found in the standalone datasheet PDF.
Drop-in alternatives for PIC18F06Q41-I/ST — 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 PIC18F06Q41-I/ST (same form factor and footprint) — differing in Program Memory (Flash), PWM, Package, Core Architecture, ADC.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC18F06Q40-I/ST
✅ Drop-In✓ In Stock
$0.84 / Unit
View Datasheet →PIC18F05Q41T-I/ST
✅ Drop-In✓ In Stock
$0.74 / Unit
View Datasheet →PIC18F05Q41-E/ST
✅ Drop-In✓ In Stock
$0.72 / Unit
View Datasheet →PIC18F04Q41-E/SL
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$0.79 / Unit
View Datasheet →PIC18F04Q40-I/ST
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$0.82 / Unit
View Datasheet →PIC18F06Q41-I/ST Maximum Ratings & Electrical Characteristics
| Product Family | PIC18-Q41 |
| Core | PIC18 8-bit |
| Program Memory (Flash) | 64 KB |
| Data Memory (SRAM) | 4 KB |
| EEPROM | 512 B |
| Maximum CPU Speed | 64 MHz (16 MIPS) |
| ADC | 12-bit ADC with Computation (ADCC) |
| DAC | 2 x 8-bit DAC |
| Operational Amplifier | 1 on-chip op-amp |
| PWM | 16-bit PWM with complementary outputs |
| Operating Temperature | -40 C to +85 C (industrial, -I) |
| Package | 14-pin TSSOP (ST) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| Lead-Free | Yes |
PIC18F06Q41-I/ST Pin Configuration
| Pin 1 | RA3/AN3/CMP1IN3-/T0CKI/MCLR — Digital I/O / ADC input / Comparator input / Timer0 clock / Master Clear reset (active-low) |
| Pin 2 | RA4/AN4/CMP1IN4+/T1G/OSC2 — Digital I/O / ADC / Comparator / Timer1 gate / Oscillator output |
| Pin 3 | RA5/AN5/DAC1OUT2/CLKOUT/OSC1 — Digital I/O / ADC / DAC1 output / Clock output / Oscillator input |
| Pin 4 | VSS — Ground reference |
| Pin 5 | RC0/AN6/DAC1OUT1/OPA1IN+/PWM3P — Digital I/O / ADC / DAC1 output / Op-amp non-inverting input / PWM output |
| Pin 6 | RC1/AN7/CMP1OUT/OPA1OUT — Digital I/O / ADC / Comparator output / Op-amp output |
| Pin 7 | RC2/AN8/DAC2OUT1/OPA1IN-/PWM3N — Digital I/O / ADC / DAC2 output / Op-amp inverting input / PWM complementary output |
| Pin 8 | RC3/AN9/CMP2IN3-/PWM4P — Digital I/O / ADC / Comparator input / PWM output |
| Pin 9 | RC4/AN10/CMP2IN4+/PWM4N — Digital I/O / ADC / Comparator input / PWM complementary output |
| Pin 10 | RC5/AN11/DAC2OUT2/PWM5P — Digital I/O / ADC / DAC2 output / PWM output |
| Pin 11 | VDD — Positive supply voltage |
| Pin 12 | RA0/AN0/CMP1IN0+/DAC1OUT3/ICSPCLK — Digital I/O / ADC / Comparator / DAC1 / In-Circuit Serial Programming clock |
| Pin 13 | RA1/AN1/CMP1IN1-/OPA1IN3+/ICSPDAT — Digital I/O / ADC / Comparator / Op-amp / In-Circuit Serial Programming data |
| Pin 14 | RA2/AN2/CMP1IN2+/TMR0/INT — Digital I/O / ADC / Comparator / Timer0 / External interrupt |
Typical Applications
PIC18F06Q41-I/ST is suitable for 7 applications: Capacitive Touch User Interface, LED Lighting Driver / Smart Bulb, Industrial Sensor Signal Conditioning, Low-Cost BLDC / PMSM Motor Control, Battery-Powered IoT Edge Node, Small Home Appliance Control, Medical / Health Monitoring Sensor.
Capacitive Touch User Interface
The PIC18F06Q41's 12-bit ADC with Computation (ADCC) plus on-chip CVD (Capacitive Voltage Divider) hardware automates touch scanning without waking the CPU, allowing a 14-TSSOP MCU to drive an 8-12 button touch panel. The integrated op-amp conditions the sensor analog signal on-chip, eliminating external active components and reducing BOM. Pin-compatible Q40/Q41 family variants let designers trade Flash size for cost while keeping the touch firmware portable across the family.
Recommended
LED Lighting Driver / Smart Bulb
The PIC18F06Q41's 16-bit PWM with complementary outputs and two 8-bit DACs lets a 14-pin TSSOP MCU drive multi-channel LED strings with smooth dimming and color-mixing, while the op-amp monitors string current via a shunt resistor. ADCC oversampling eliminates LED current ripple that would otherwise create audible flicker. Designers reuse the same MCU across fixed-current bulbs, RGB fixtures, and tunable-white luminaires without changing the PCB.
Recommended
Industrial Sensor Signal Conditioning
The PIC18F06Q41 combines a 12-bit ADCC with on-chip op-amp and dual DACs to implement bridge-sensor, RTD, or thermocouple signal conditioning in a single 14-TSSOP IC. The op-amp front-end amplifies mV-level sensor outputs, the ADCC oversamples for noise rejection, and the DACs deliver calibration bias. CIP peripherals run the entire measurement loop without CPU involvement, allowing deterministic sampling rates as low as 10 uA average current in battery-powered field sensors.
Recommended
Low-Cost BLDC / PMSM Motor Control
The PIC18F06Q41's 16-bit PWM with complementary outputs and configurable dead-band drives a three-phase FET bridge with center-aligned PWM at 64 MHz, while the on-chip op-amp conditions back-EMF feedback for sensorless control. 4 KB SRAM and 64 KB Flash hold the commutation table and a basic speed PI loop, letting a 14-TSSOP MCU replace larger 32-bit parts in small fan, pump, and drone motor nodes. Pin-compatibility across Q41 family enables cost-down via the 32 KB Q5 variant.
Recommended
Battery-Powered IoT Edge Node
The PIC18F06Q41's 64 MHz PIC18 core, low-power sleep modes and on-chip op-amp let a 14-pin TSSOP MCU read sensors, buffer analog, and transmit via UART/SPI to an external radio at average currents under 50 uA. The 12-bit ADCC with averaging/filtering handles noisy battery-rail measurements, while the dual DACs generate reference voltages for external analog front-ends. Code reuse across Q41 and Q40 families lets designers tune Flash to BOM cost without PCB redesign.
Recommended
Small Home Appliance Control
The PIC18F06Q41 fits white-goods sub-modules (coffee makers, blenders, fans, dehumidifiers) where its 14-TSSOP small footprint, on-chip op-amp for thermistor feedback, dual DAC for variable-power control, and 16-bit PWM for triac-style phase-cut dimming deliver a complete control solution. ADCC oversampling rejects mains-frequency noise on temperature and current sense lines. Pin compatibility with Q40 and Q5xQ41 lets designers reuse PCB across product variants.
Recommended
Medical / Health Monitoring Sensor
The PIC18F06Q41's 12-bit ADCC, on-chip op-amp, and dual DAC let a 14-pin TSSOP MCU condition and digitize low-level biosignals (pulse oximetry, temperature, glucose strips) without external analog front-ends. ADCC threshold detection generates interrupts only when measurement crosses limits, allowing the CPU to sleep until an event occurs and extending battery life in wearable patches. The PIC18 deterministic interrupt latency simplifies FDA-compliant firmware design.
Recommended
Recommended Products Summary
Engineering reference data for PIC18F06Q41-I/ST — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC18F06Q40-I/ST | PIC18F05Q41T-I/ST | PIC18F05Q41-E/ST | PIC18F04Q41-E/SL | PIC18F04Q40-I/ST |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 14-TSSOP (ST) | 14-TSSOP (ST) - same | 14-TSSOP (ST) - same | 14-TSSOP (ST) - same | 14-TSSOP (ST) - same | 14-TSSOP (ST) - same |
| Program Memory (Flash) | 64 KB | 64 KB | 32 KB (-50%) | 32 KB (-50%) | 16 KB (-75%) | 16 KB (-75%) |
| Data Memory (SRAM) | 4 KB | 4 KB | 4 KB | 4 KB | 4 KB | 4 KB |
| Maximum CPU Speed | 64 MHz (16 MIPS) | 64 MHz (16 MIPS) | 64 MHz (16 MIPS) | 64 MHz (16 MIPS) | 64 MHz (16 MIPS) | 64 MHz (16 MIPS) |
| On-chip Op-amp | 1 | 0 (not present) | 1 | 1 | 1 | 0 |
| DAC | 2 x 8-bit | 1 x 8-bit | 2 x 8-bit | 2 x 8-bit | 2 x 8-bit | 1 x 8-bit |
| ADC | 12-bit ADCC | 12-bit (simpler) | 12-bit ADCC | 12-bit ADCC | 12-bit ADCC | 12-bit |
| Operating Temperature | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +125 C | -40 C to +125 C | -40 C to +85 C |
Key Differentiators
- Two 8-bit DACs plus on-chip op-amp in a 14-TSSOP package (vs PIC18F06Q40-I/ST)
- ADCC with hardware oversampling, threshold and accumulation (vs PIC18F06Q40-I/ST)
- Extended temperature option within the same 14-TSSOP footprint (vs PIC18F05Q41T-I/ST)
Design Notes
Estimated: PIC18F06Q41 at 64 MHz CPU, all peripherals enabled and GPIO active, draws roughly 8-12 mA. Use a 100 nF decoupling cap as close as possible to the VDD pin (pin 11) plus a 10 uF bulk capacitor at the TSSOP supply trace. Enable the on-chip voltage regulator and follow Microchip's power-sequence guidance in the PIC18F06/16Q41 datasheet (document 40002214E) for sleep-mode wakeup latency.
Route the ICSP clock/data pins (RA0/ICSPCLK and RA1/ICSPDAT, pins 12-13) to a 0.1 inch pitch programming header or test pad so that the MPLAB ICD 4 or PICkit 5 can attach without rework. Keep the MCLR line short and add a typical 10 kohm pull-up to VDD; MCLR is multiplexed with RA3 on the 14-TSSOP variant, so plan your pin map before committing to a programming connector footprint.
For capacitive touch (CVD) applications, isolate the touch sensor traces with a ground guard ring on both sides of the PCB, and avoid running noisy PWM or digital traces directly beneath or parallel to the touch electrodes. The on-chip op-amp output pin (RC1/OPA1OUT) should drive the sensor via a short, guarded analog trace to minimize parasitic capacitance that the ADCC would otherwise have to compensate for.
Two common pitfalls: (1) forgetting that the 14-TSSOP variant shares RA0/RA1 with ICSPCLK/ICSPDAT - any user code that remaps these pins must leave them functional for programming; (2) using the upper half of Flash (above 32 KB) when the design is targeted at PIC18F05Q41 cost-down variants. Always check the family programming specification (DS-40002214E) and current errata before locking firmware that uses ADCC oversampling or DMA-driven peripherals.
Compliance Information
RoHS/REACH compliant per Microchip product page. Not AEC-Q100 qualified; for automotive designs select a Q41-Q or Q41 automotive-grade variant if/when available, or apply external isolation/qualification.
