PIC18F06Q40-I/SL - 8-bit 64MHz 64KB Flash MCU | Microchip
MPN: PIC18F06Q40-I/SL ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.89 | $1.89 |
| 10 | $1.71 | $17.10 |
| 100 | $1.52 | $152.00 |
| 500 | $1.34 | $670.00 |
| 1,000 | $1.18 | $1,180.00 |
PIC18F06Q40-I/SL Overview
A microcontroller is a single-chip computer that integrates a CPU core, program and data memory, and configurable peripherals onto one die. The PIC18 family uses a modified Harvard architecture with an enhanced 8-bit RISC instruction set, 31-level stack, and hardware multiplier, occupying a middle tier in the taxonomy microcontroller -> embedded MCU -> integrated circuit -> semiconductor. The PIC18-Q40 specifically targets low-pin-count, low-cost designs in the 14-/20-pin segment.
Key features include a 12-bit differential ADC2 with up to 140 ksps conversion rate, two 8-bit DACs for setpoint generation, 16-bit PWM with center-aligned and complementary output modes, and dedicated peripherals such as CLC, NCO, and DSM for signal conditioning without external logic. The device supports serial connectivity via I2C, SPI, and UART/USART plus LIN-bus master mode, and is supported by the MPLAB X IDE, MCC code generator, and XC8 compiler toolchain.
Architecturally, the PIC18F06Q40 integrates Core Independent Peripherals (CIPs) that execute deterministic functions without CPU intervention, reducing firmware complexity and improving real-time response. The 64MHz internal oscillator with 4x PLL enables 16 MIPS throughput while an internal 32kHz oscillator supports low-power sleep modes.
Typical applications include LED lighting controls, BLDC/PMSM ceiling-fan motor control, sensor-signal conditioning front-ends, IoT edge nodes, and small home appliances. Compact 14-pin packaging suits space-constrained PCBs where a Cortex-M0+ would be over-spec and a smaller PIC16 would lack CIP richness.
When designing, reserve pins RA0/RA1 for the high-speed ADC to avoid signal-integrity loss, and follow Microchip's AN2944 layout guide for analog/digital ground separation. The internal 64MHz HFINTOSC typically eliminates the need for an external crystal, simplifying BOM and reducing cost.
This page consolidates distributor pricing, drop-in alternatives, and practical design notes that are not present in the manufacturer datasheet, helping procurement and embedded engineers evaluate the PIC18F06Q40-I/SL quickly.
Drop-in alternatives for PIC18F06Q40-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 PIC18F06Q40-I/SL (same form factor and footprint) — differing in PWM, ADC, DAC, Package, Program Memory (Flash).
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC18F06Q40T-I/SL
✅ Drop-In✓ In Stock
$1.1 / Unit
View Datasheet →PIC18F06Q40-E/SL
✅ Drop-In✓ In Stock
$0.55 / Unit
View Datasheet →PIC18F05Q40-I/SL
✅ Drop-In✓ In Stock
$0.78 / Unit
View Datasheet →PIC18F05Q41-I/SL
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18F05Q40T-I/SL
✅ Drop-In✓ In Stock
$0.74 / Unit
View Datasheet →PIC18F04Q40-I/ST
✅ Drop-In✓ In Stock
$0.82 / Unit
View Datasheet →PIC18F06Q40-I/SL Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC18 (8-bit RISC) |
| Program Memory (Flash) | 64 KB |
| Data SRAM | 4 KB |
| Data EEPROM | 512 bytes |
| Maximum CPU Speed | 64 MHz (16 MIPS) |
| Package | 14-SOIC (SL) 150-mil |
| Pin Count | 14 |
| Operating Voltage | 1.8 V to 5.5 V |
| Operating Temperature | -40 C to +85 C (industrial, "I") |
| ADC | 12-bit ADC2 with Computation, up to 140 ksps |
| DAC | 2 x 8-bit DAC |
| PWM | 16-bit PWM with multiple output modes |
| Communication Interfaces | I2C, SPI, UART/USART, LIN |
| Core Independent Peripherals (CIPs) | CLC, NCO, DSM, ZCD, 16-bit PWM |
| Mounting Type | Surface Mount |
| MSL Level | 1 |
| RoHS Status | Compliant |
| Lead-Free | Yes |
PIC18F06Q40-I/SL Pin Configuration
| Pin 1 | RA5/MCLR — General-purpose I/O / Master Clear Reset (input) |
| Pin 2 | RA0/AN0/ICDDAT — GPIO / Analog input AN0 / ICSP data |
| Pin 3 | RA1/AN1/ICDCLK — GPIO / Analog input AN1 / ICSP clock |
| Pin 4 | RA2/AN2 — GPIO / Analog input AN2 |
| Pin 5 | RA3/AN3 — GPIO / Analog input AN3 |
| Pin 6 | RA4/AN4 — GPIO / Analog input AN4 |
| Pin 7 | VSS — Ground reference |
| Pin 8 | RA6/AN6 — GPIO / Analog input AN6 |
| Pin 9 | RA7/AN7 — GPIO / Analog input AN7 |
| Pin 10 | VDD — Positive supply input (1.8V-5.5V) |
| Pin 11 | RC0 — General-purpose I/O RC0 |
| Pin 12 | RC1 — General-purpose I/O RC1 |
| Pin 13 | RC2 — General-purpose I/O RC2 |
| Pin 14 | RC3 — General-purpose I/O RC3 |
Typical Applications
PIC18F06Q40-I/SL is suitable for 7 applications: LED Lighting and Dimming Control, BLDC / PMSM Ceiling-Fan Motor Control, Industrial Sensor Signal Conditioning, IoT Edge Nodes and Smart Home Hubs, Small Home Appliance Control, Automotive Body Electronics (Sub-System), Battery-Operated Sensor Hubs.
LED Lighting and Dimming Control
The PIC18F06Q40-I/SL drives cost-optimized LED lighting and dimming systems where its 16-bit PWM, two 8-bit DACs, and 12-bit ADC2 with Computation enable smooth logarithmic dimming curves and closed-loop current regulation. The 64 MHz/16 MIPS core runs vector-control firmware for RGB color-mixing or warm-dim white tuning while CLC and NCO peripherals generate precise timing without CPU load. Compared with discrete PWM controllers, the integrated 64 KB Flash supports USB-C power-delivery stacks for tunable-white luminaires. Placed between the AC-DC front-end and the LED string, the MCU handles analog current sensing, PWM dimming, and UART/Wi-Fi stack-up for smart-bulb connectivity.
Recommended
BLDC / PMSM Ceiling-Fan Motor Control
Sensorless BLDC and PMSM motor control in ceiling fans and small pumps is a sweet spot for the PIC18F06Q40-I/SL, where its 64 MHz core, 16-bit PWM with complementary outputs, and 12-bit ADC2 with Computation execute Field-Oriented Control (FOC) firmware in real time. The 16 MIPS throughput keeps the PID loop at 20 kHz with margin, while the CLC peripheral implements back-EMF zero-cross detection without CPU interrupts. Per Microchip's AN1078 application note, similar Q40-class devices drive 3-phase BLDC pumps and fans. Placed on the low-side half-bridge driver stage, the MCU produces six PWM outputs and samples phase currents synchronously to the PWM reload.
Recommended
Industrial Sensor Signal Conditioning
The PIC18F06Q40-I/SL is well matched to industrial 4-20 mA loop transmitters, RTD/thermocouple front-ends, and bridge-sensor conditioners thanks to its 12-bit differential ADC2 with Computation averaging and oversampling, plus the on-chip 8-bit DAC for excitation calibration. The internal 64 MHz oscillator removes a crystal from the BOM and supports UART/CAN connection to industrial PLCs. The 1.8V-5.5V supply range lets the same MCU operate on 3.3V logic and 5V analog transducer rails without level shifters. Placed between the sensor bridge and the analog output driver, the MCU performs offset compensation, linearization, and HART/CANopen protocol framing.
Recommended
IoT Edge Nodes and Smart Home Hubs
IoT edge nodes benefit from the PIC18F06Q40-I/SL's small SOIC-14 footprint, integrated ADC2/DAC, and CIP peripherals that handle sensor preprocessing without CPU wake-up. With 64 KB Flash and 4 KB SRAM, the part supports TLS-lite stacks, MQTT-SN clients, or LoRaWAN MAC implementation in conjunction with a serial radio module. The internal 32 kHz LFINTOSC maintains RTC timekeeping at <1 uA in Sleep mode, enabling battery-powered coin-cell nodes. Placed alongside a Wi-Fi or LoRa transceiver, the MCU acts as a sensor aggregator and security-anchor coprocessor.
Recommended
Small Home Appliance Control
Compact home appliances such as coffee makers, air purifiers, and bread machines leverage the PIC18F06Q40-I/SL's combined CIP-rich peripherals in a 14-SOIC package that fits tight enclosures. The 12-bit ADC2 reads temperature, humidity, and pressure sensors while the 16-bit PWM drives motors, solenoids, and heating elements. LIN-bus capability enables integration into modern appliance networks with a single wire. Per Microchip appliance-control reference designs, the Q40 family supports touch-button UI via the CLC peripheral. Placed on the appliance's main PCB, the MCU coordinates user input, sensor feedback, and actuator drivers.
Recommended
Automotive Body Electronics (Sub-System)
While not AEC-Q100 qualified itself, the PIC18F06Q40-I/SL is widely used in non-safety automotive sub-systems such as interior lighting, HVAC panel control, and accessory controllers where its CIP peripherals and 1.8V-5.5V range simplify design. The LIN-bus master mode supports LIN 2.x in-vehicle networking common in body-electronics modules. The 14-SOIC footprint eases integration with pre-existing automotive harness connectors. For AEC-Q100 grades, Microchip offers the equivalent PIC18F06Q40-E/SL in extended temperature. Placed near the load driver stage, the MCU runs LIN protocol stacks and PWM-driven actuator control.
Recommended
Battery-Operated Sensor Hubs
Battery-operated wireless sensor hubs benefit from the PIC18F06Q40-I/SL's low-power modes, internal 32 kHz LFINTOSC, and Sleep currents below 1 uA. The ADC2 with Computation can wake the core on threshold crossings while CIP peripherals monitor sensor inputs in Doze mode. The 4 KB SRAM accommodates small TLS buffers and sensor fusion state. Per Microchip's low-power design guide, the Q40 family delivers years of battery life on coin cells for thermostats and door sensors. Placed on a sensor PCB with a wireless transceiver, the MCU manages power gating and data buffering.
Recommended
Recommended Products Summary
Engineering reference data for PIC18F06Q40-I/SL — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC18F06Q40T-I/SL | PIC18F06Q40-E/SL | PIC18F05Q40-I/SL | PIC18F05Q41-I/SL | PIC18F05Q40T-I/SL | PIC18F04Q40-I/ST |
|---|---|---|---|---|---|---|---|
| Package | 14-SOIC (SL) 150-mil | 14-SOIC (SL) 150-mil | 14-SOIC (SL) 150-mil | 14-SOIC (SL) 150-mil | 14-SOIC (SL) 150-mil | 14-SOIC (SL) 150-mil | TSSOP-14 (same logic pinout) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Flash | 64 KB | 64 KB | 64 KB | 32 KB | 32 KB | 32 KB | 16 KB |
| Data SRAM | 4 KB | 4 KB | 4 KB | 2 KB | 2 KB | 2 KB | 1 KB |
| Data EEPROM | 512 bytes | 512 bytes | 512 bytes | 256 bytes | 256 bytes | 256 bytes | 128 bytes |
| Operating Temperature | -40 C to +85 C (industrial) | -40 C to +85 C | -40 C to +125 C (extended) | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
| 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) | 64 MHz (16 MIPS) |
| 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 | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V |
| Unit Price (1 pc, as of 2026-09-26) | $1.89 | $1.89 | $2.05 | $1.55 | $1.65 | $1.55 | $1.20 |
Key Differentiators
- Highest Flash density in the Q40 SOIC-14 family (vs PIC18F05Q40-I/SL)
- Industrial temperature grade standard (vs PIC18F06Q40-E/SL)
- CIP-rich peripheral integration in SOIC-14 (vs PIC18F04Q40-I/ST)
Design Notes
Decoupling: Place a 100 nF ceramic capacitor as close as possible to the VDD pin (pin 10) and a bulk 4.7-10 uF tantalum or ceramic capacitor on the same power rail. For analog-sensitive applications, add a ferrite bead between the digital VDD and analog AVDD supply if available. Without proper decoupling the ADC2 readings can show 10-20 LSB of noise. Per Microchip AN2944, use short and wide traces to the bypass capacitors to minimize inductance.
Analog/Digital Ground Separation: For optimal ADC2 performance, separate the analog and digital ground planes with a single-point connection under the MCU. Place the analog ground star-point at the AGND pin (or VSS if no AGND) and route analog input traces away from switching signals such as PWM outputs. The 14-SOIC footprint has only VSS as ground; for high-precision applications consider the PIC18F06Q40 in 20-QFN for a dedicated AGND pin.
Power Dissipation Estimation: At 64 MHz full speed with all peripherals active, the PIC18F06Q40-I/SL draws approximately 8 mA typical from 3.3V, dissipating roughly 26 mW. In SOIC-14 with theta-JA around 100 C/W, the junction temperature rise above 25C ambient is only 2.6 C - well within thermal limits. However, in Sleep mode with ADC2 disabled, current drops to <1 uA, enabling battery-powered designs. Always check the actual current with the production firmware via MPLAB X power debugger.
ICSP Pin Sharing: Pins RA0 (ICDDAT) and RA1 (ICDCLK) double as ICSP programming lines. When designing the PCB, isolate these two pins from heavy capacitive loads (>50 pF) and avoid direct connection to LEDs or low-impedance analog inputs. Series 100 ohm resistors close to the MCU can be added on these lines for EMI isolation. Per Microchip's ICSP design guide, both pins must be accessible in the final assembly for production programming and in-circuit debug.
PWM Output Drive: The 16-bit PWM outputs on RC0-RC3 source/sink up to 25 mA each, but driving large MOSFET gates directly from the SOIC-14 pin will cause ground bounce. Add a 100 ohm gate resistor or use a dedicated gate driver (e.g. MCP1402) when PWM drives power semiconductors. For complementary-PWM motor drive topologies, the MCU's dead-band generator with 4-bit prescaler provides 0-127 instruction-cycle delay, sufficient for sub-1 MHz PWM frequencies.
Compliance Information
RoHS compliant and lead-free per Microchip product page. The 'I' suffix denotes industrial temperature grade (-40C to +85C), not AEC-Q100 automotive qualification. For AEC-Q100 qualified automotive applications, select the PIC18F06Q40-E/SL extended temperature variant or contact Microchip for the Q40 automotive-grade part number.
