PIC18F06Q40T-I/SL - 8-Bit 64MHz MCU 64KB Flash 14-SOIC | Microchip
MPN: PIC18F06Q40T-I/SL ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.79 | $1.79 |
| 10 | $1.55 | $15.50 |
| 100 | $1.34 | $134.00 |
| 500 | $1.18 | $590.00 |
| 1,000 | $1.1 | $1,100.00 |
PIC18F06Q40T-I/SL Overview
A microcontroller (MCU) is a single-chip computer containing a CPU, program memory, working RAM, data EEPROM, and on-chip peripherals such as ADC, DAC, timers, PWM, and communication interfaces. PIC18F MCUs use Microchip's enhanced Harvard architecture and modified RISC instruction set, positioning them within the broader taxonomy: MCU -> 8-bit MCU -> PIC18 -> PIC18F -> PIC18-Q40. The Q40 sub-family specifically targets analog-intensive closed-loop control with built-in op-amp-style analog peripherals and digital signal conditioning that reduce the need for external components.
Key features include 64 KB self-programmable Flash with device information area, 4 KB SRAM supporting hardware multiplier operations, and 512 bytes of EEPROM for non-volatile user data. Communication options include UART, SPI, and I2C, while the 12-bit ADC2 with computation engine supports automated averaging, oversampling, and threshold comparisons - reducing CPU overhead in sensor applications. Two 8-bit DACs and one 16-bit PWM with multiple modes support motor, lighting, and power-supply control loops.
The 14-pin SOIC package provides a small footprint suitable for compact designs while exposing five ADC channels, two DAC outputs, PWM outputs, and standard communication pins. CIP (Core Independent Peripherals) such as CWG, NCO, and the CRC scanner further offload the CPU, enabling deterministic response times even under heavy interrupt load.
Typical applications include sensor signal conditioning, LED lighting control, closed-loop fan or small motor control, appliance user interfaces, and IoT edge nodes. The 16-bit PWM and dual DACs also support cost-sensitive power-conversion and battery-management tasks.
When designing with the PIC18F06Q40T-I/SL, ensure the decoupling network uses a 100 nF ceramic capacitor on VDD and a bulk capacitor (typically 10 uF) near the IC. Programming and debugging are supported via ICSP (In-Circuit Serial Programming) on PGED/PGEC pins and the MPLAB ICD tools. The -I grade supports -40C to +85C operation, suitable for industrial environments.
This page synthesizes distributor pricing, drop-in alternatives from the same Microchip family, and practical design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for PIC18F06Q40T-I/SL — 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 PIC18F06Q40T-I/SL (same form factor and footprint) — differing in PWM, Operating Temperature, ADC, Package, Program Memory (Flash).
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC18F06Q40-I/SL
✅ Drop-In✓ In Stock
$1.18 / Unit
View Datasheet →PIC18F06Q40T-I/ST
✅ Drop-In✓ In Stock
$0.94 / Unit
View Datasheet →PIC18F05Q40T-I/SL
✅ Drop-In✓ In Stock
$0.74 / Unit
View Datasheet →PIC18F05Q40-I/SL
✅ Drop-In✓ In Stock
$0.78 / Unit
View Datasheet →PIC18F06Q40-E/ST
✅ Drop-In✓ In Stock
$0.81 / Unit
View Datasheet →PIC18F06Q40T-I/SL Maximum Ratings & Electrical Characteristics
| Core | PIC18 8-bit enhanced RISC |
| Maximum CPU Frequency | 64 MHz |
| Program Memory (Flash) | 64 KB |
| Data SRAM | 4 KB |
| Data EEPROM | 512 B |
| Package | 14-pin SOIC (SL) |
| Mounting Type | Surface Mount |
| ADC | 12-bit ADC with Computation (ADC2) |
| DAC | 2 x 8-bit DAC |
| PWM | 16-bit PWM (multiple outputs) |
| Operating Temperature | -40C to +85C (Industrial, -I grade) |
| Communication Interfaces | UART, SPI, I2C |
| Core Independent Peripherals | CWG, NCO, CRC, PWM, DAC |
| Programming Interface | ICSP (PGED/PGEC) |
| RoHS Status | Compliant |
PIC18F06Q40T-I/SL Pin Configuration
| Pin 1 | RA5 — GPIO / ADC input |
| Pin 2 | RA4 — GPIO / ADC input |
| Pin 3 | RA3 — GPIO / MCLR (reset input) |
| Pin 4 | RA2 — GPIO / ADC input / DAC output |
| Pin 5 | RA1 — GPIO / ADC input / DAC output |
| Pin 6 | RA0 — GPIO / ADC input |
| Pin 7 | VSS — Ground reference |
| Pin 8 | RA7 — GPIO / oscillator / ADC input |
| Pin 9 | RA6 — GPIO / oscillator / ADC input |
| Pin 10 | RC0 — GPIO / PWM output |
| Pin 11 | RC1 — GPIO / PWM output / I2C SCL |
| Pin 12 | RC2 — GPIO / PWM output / I2C SDA |
| Pin 13 | PGEC — In-circuit debugger / programming clock |
| Pin 14 | VDD — Positive supply voltage |
Typical Applications
PIC18F06Q40T-I/SL is suitable for 6 applications: Sensor Signal Conditioning, LED Lighting Control, Closed-Loop Fan and Small Motor Control, Appliance User Interface Boards, IoT Edge Sensor Nodes, Battery Management and Small Power Conversion.
Sensor Signal Conditioning
The PIC18F06Q40T-I/SL fits sensor signal-conditioning boards because its 12-bit ADC with Computation (ADC2) automates averaging, oversampling, and threshold detection, offloading the CPU from repetitive digital-filter tasks. The two on-chip 8-bit DACs provide bias or set-point references to bridge sensors, while the 64 KB Flash at 64 MHz (16 MIPS) is enough for calibration tables and DSP-style filters. The 14-pin SOIC footprint supports compact PCB designs where space is at a premium.
Recommended
LED Lighting Control
The PIC18F06Q40T-I/SL drives LED lighting systems using its 16-bit PWM with multiple independent outputs, supporting smooth dimming, color mixing, and high-resolution brightness control. The 64 MHz core runs color-space conversion and PWM update algorithms without taxing interrupt response, while the 4 KB SRAM retains working buffers for animation effects. Two 8-bit DACs add bias channels for warm-white tuning, and the 14-SOIC footprint fits into small lamp-driver PCBs.
Recommended
Closed-Loop Fan and Small Motor Control
In small fan or motor control applications the PIC18F06Q40T-I/SL uses its 16-bit PWM with complementary outputs and dead-band control to drive half-bridges safely, while the 12-bit ADC samples back-EMF or current-sense signals for closed-loop regulation. The 64 KB Flash accommodates state-machine firmware and fault-handling routines, and the dual 8-bit DACs can set analog references for comparators or auxiliary bias. Industrial-grade -40C to +85C operation handles under-hood and appliance environments.
Recommended
Appliance User Interface Boards
The PIC18F06Q40T-I/SL serves appliance UI boards because it integrates capacitive-touch-ready I/O, UART for display or keypad scanning, and 64 KB Flash for multi-language menu firmware. The 4 KB SRAM is comfortable for menu state and temporary buffers, while the on-chip DACs can drive LED backlight or buzzer tones. The 14-pin SOIC package plus industrial temperature range suits washing-machine, oven, and refrigerator control panels.
Recommended
IoT Edge Sensor Nodes
The PIC18F06Q40T-I/SL works in IoT edge nodes because its 12-bit ADC2 with Computation provides on-chip oversampling and averaging, reducing the raw-data bandwidth sent to a host MCU. The 64 KB Flash supports small communication stacks or edge-AI inference, while UART/SPI/I2C allow flexible attachment to radios and sensors. Low-power sleep modes plus the compact 14-SOIC footprint support battery-powered devices deployed in field enclosures.
Recommended
Battery Management and Small Power Conversion
The PIC18F06Q40T-I/SL fits small battery-management and power-conversion boards because its 16-bit PWM, 12-bit ADC, and dual 8-bit DACs enable closed-loop control of buck/boost converters, balancing circuits, and chargers. The 64 KB Flash holds look-up tables for charge profiles and protection thresholds, while the 4 KB SRAM supports real-time current and voltage sampling buffers. The industrial -40C to +85C temperature range handles the thermal range of portable packs.
Recommended
Recommended Products Summary
Engineering reference data for PIC18F06Q40T-I/SL — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC18F06Q40-I/SL | PIC18F05Q40T-I/SL | PIC18F05Q40-I/SL | PIC18F06Q40-E/ST |
|---|---|---|---|---|---|
| Package | 14-SOIC (SL) | 14-SOIC (SL) - same | 14-SOIC (SL) - same | 14-SOIC (SL) - same | 14-SOIC (TSSOP-14, ST) - same pin count |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 64 KB | 64 KB | 32 KB | 32 KB | 64 KB |
| SRAM | 4 KB | 4 KB | 2 KB | 2 KB | 4 KB |
| EEPROM | 512 B | 512 B | 256 B | 256 B | 512 B |
| Maximum CPU Frequency | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +125C (Extended) |
| ADC / DAC | 12-bit ADC2 + 2 x 8-bit DAC | 12-bit ADC2 + 2 x 8-bit DAC | 12-bit ADC2 + 2 x 8-bit DAC | 12-bit ADC2 + 2 x 8-bit DAC | 12-bit ADC2 + 2 x 8-bit DAC |
| Packaging Format | Tape & Reel | Tray | Tape & Reel | Tray | Tape & Reel |
Key Differentiators
- Highest Flash memory variant in the Q40 family within 14-SOIC (vs PIC18F05Q40T-I/SL)
- Same silicon as PIC18F06Q40-I/SL but factory-taped for SMT lines (vs PIC18F06Q40-I/SL)
- Industrial temperature grade at lower cost than extended-temperature variant (vs PIC18F06Q40-E/ST)
Design Notes
Place a 100 nF ceramic decoupling capacitor as close as physically possible to the VDD pin (pin 14), with a 10 uF bulk capacitor on the same node. The PIC18F06Q40T-I/SL draws brief high-current pulses during Flash programming and ADC conversions; tight decoupling prevents VDD droop that can cause ADC errors or code execution faults.
The 14-pin SOIC land pattern is a JEDEC standard 1.27 mm pitch SOIC footprint. Keep at least 0.5 mm clearance around the IC for solder paste inspection and rework. The exposed lead frame on the bottom of the SOIC is not a thermal pad; do not connect it to anything to avoid shorts on the bottom copper layer.
Do not omit the 10 kohm pull-up on MCLR (pin 3). Microchip PIC18 MCUs require MCLR high for normal operation; floating or weak MCLR causes intermittent resets. For ICSP programming, the PGEC (pin 13) and PGED (pin 14 in some pinouts) lines must be accessible; never route them through analog-only signal paths or buffered level shifters without checking the in-circuit programmer's voltage tolerance.
When using the 12-bit ADC2 with Computation at high conversion rates, average multiple samples in firmware to suppress mains-frequency noise. Avoid routing the ADC reference pin near PWM or high-current switching traces - coupling can degrade ADC linearity. Use a low-impedance voltage reference (bandgap or external 2.048V) for ratiometric measurements demanding better than 0.5% accuracy.
Compliance Information
RoHS compliant per Microchip product page. Lead-free finish (Matte Tin) standard. Halogen-free status not explicitly stated in the provided data; verify with manufacturer declaration if required. AEC-Q100 not applicable - this is an 8-bit MCU for industrial use, not automotive grade.
