PIC18F16Q41-I/SS - 8-bit MCU, 64KB Flash, 64MHz, 20-SSOP | Microchip
MPN: PIC18F16Q41-I/SS ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.95 | $1.95 |
| 10 | $1.76 | $17.60 |
| 100 | $1.55 | $155.00 |
| 500 | $1.38 | $690.00 |
| 1,000 | $1.22 | $1,220.00 |
PIC18F16Q41-I/SS Overview
A microcontroller (MCU) is an integrated circuit that combines a CPU core, program memory (Flash), data memory (SRAM), non-volatile storage (EEPROM), and configurable peripherals (ADC, timers, PWM, communication interfaces) on a single silicon die. MCUs sit within the broader semiconductor hierarchy as embedded computing devices used for sensor signal acquisition, real-time control loops, and human-machine interfaces. PIC18 MCUs specifically use Microchip's enhanced 8-bit Harvard architecture with a modified RISC instruction set, balancing deterministic execution with low power consumption.
Key differentiating features of the PIC18F16Q41 include the ADCC module that automates Capacitive Voltage Divider (CVD) techniques for advanced capacitive touch sensing, averaging, filtering, oversampling and threshold comparison. It also provides four DMA channels, five timers, three complementary waveform generators, and communication peripherals including UART, SPI, and I2C. The 64 KB Flash supports in-circuit serial programming (ICSP) and self-programming for field upgrades.
The PIC18F16Q41 architecture uses an 8-bit data path with a 16-bit instruction word, enabling most instructions to execute in a single cycle. The integrated op-amp and dual DACs allow direct interface to analog sensors without external signal conditioning, while the ADCC offloads averaging and threshold decisions from the CPU, freeing cycles for application logic. The wide operating voltage range from 1.8V to 5.5V supports both 3.3V and 5V system designs.
Typical applications include capacitive touch user interfaces, sensor signal conditioning, LED lighting control with high-resolution dimming, low-cost BLDC motor control loops, and battery-powered IoT sensor nodes. The compact 20-pin footprint with advanced analog integration is particularly well suited to space-constrained sensor front-ends and appliance control panels.
When designing with this device, place decoupling capacitors within 5 mm of each VDD pin and keep analog traces short to minimize ADC noise coupling. The ADCC threshold and averaging settings should be tuned to the specific sensor characteristics to balance response time against noise immunity.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone, supporting both new design engineers and component sourcing professionals.
Drop-in alternatives for PIC18F16Q41-I/SS — 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 PIC18F16Q41-I/SS (same form factor and footprint) — differing in ADC, Package, PWM, Core Architecture, Program Memory (Flash).
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC18F16Q41T-I/SS
✅ Drop-In✓ In Stock
$1.55 / Unit
View Datasheet →PIC18F15Q41-I/SS
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$0.95 / Unit
View Datasheet →PIC18F14Q41-I/SO
✅ Drop-In✓ In Stock
$1.52 / Unit
View Datasheet →PIC18F16Q41-I/SS Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC18 8-bit RISC (Harvard) |
| Maximum CPU Frequency | 64 MHz |
| Flash Program Memory | 64 KB |
| SRAM | 4 KB |
| EEPROM | 512 bytes |
| ADC | 12-bit with Computation (ADCC), Capacitive Voltage Divider support |
| DAC Modules | 2 x 8-bit DAC |
| Operational Amplifier | 1 on-chip op-amp |
| PWM Channels | 16-bit PWM with complementary outputs |
| DMA Channels | 4 |
| Timers | 5 |
| Operating Voltage Range | 1.8 V to 5.5 V |
| Operating Temperature | -40 C to +85 C (industrial grade -I) |
| Package | 20-pin SSOP (5.30 mm body) |
| Mounting Type | Surface Mount |
| I/O Pins | 17 (typical for 20-pin Q41 variant) |
| Communication Interfaces | UART, SPI, I2C |
| RoHS Status | Compliant |
PIC18F16Q41-I/SS Pin Configuration
| Pin 1 | RA5 — Digital I/O / ADC channel / DAC reference |
| Pin 2 | RA4 — Digital I/O / ADC channel |
| Pin 3 | RA3 — Digital I/O / MCLR (reset input) |
| Pin 4 | RC5 — Digital I/O / PWM output |
| Pin 5 | RC4 — Digital I/O / PWM output |
| Pin 6 | RC3 — Digital I/O / SPI/I2C clock |
| Pin 7 | RC2 — Digital I/O / DAC output 1 |
| Pin 8 | RC1 — Digital I/O / DAC output 2 |
| Pin 9 | RC0 — Digital I/O |
| Pin 10 | RA2 — Digital I/O / op-amp output |
| Pin 11 | RA1 — Digital I/O / op-amp inverting input / I2C data |
| Pin 12 | RA0 — Digital I/O / op-amp non-inverting input |
| Pin 13 | VDD — Positive supply voltage (1.8V to 5.5V) |
| Pin 14 | VSS — Ground reference |
| Pin 15 | RB7 — Digital I/O / SPI data out / UART TX |
| Pin 16 | RB6 — Digital I/O / SPI data in / UART RX |
| Pin 17 | RB5 — Digital I/O / PWM output / ADC channel |
| Pin 18 | RB4 — Digital I/O / ADC channel |
| Pin 19 | RB3 — Digital I/O / ADC channel |
| Pin 20 | RB2 — Digital I/O / ADC channel |
Typical Applications
PIC18F16Q41-I/SS is suitable for 6 applications: Capacitive Touch User Interface, Sensor Signal Conditioning Front-End, LED Lighting Engine with Dimming, Battery-Powered IoT Sensor Node, Low-Cost BLDC Motor Control, Home Appliance Control Panel.
Capacitive Touch User Interface
The PIC18F16Q41-I/SS is ideal for capacitive touch button, slider, and proximity sensing applications thanks to its 12-bit ADCC with Capacitive Voltage Divider support. The ADCC automates averaging, oversampling, and threshold comparison, offloading touch-scan processing from the CPU and enabling reliable sensing even in noisy environments. With 64 KB Flash, firmware can include capacitive touch libraries plus custom gesture recognition algorithms. The 64 MHz CPU executes touch-scan routines in under 100 microseconds per channel, supporting low-power wake-on-touch designs in appliances and consumer electronics.
Recommended
Sensor Signal Conditioning Front-End
The integrated on-chip op-amp and dual 8-bit DACs make the PIC18F16Q41-I/SS well suited to interface directly with bridge sensors, thermocouples, and analog signal sources without external conditioning circuitry. The 12-bit ADCC delivers 12 ENOB resolution with hardware averaging, providing precise measurements for industrial process monitoring. The MCU's 4 KB SRAM supports moving-window filters and calibration lookup tables. Combined with 1.8V to 5.5V operation, the device can be powered directly from a single 3.3V or 5V sensor supply rail, simplifying system architecture.
Recommended
LED Lighting Engine with Dimming
The PIC18F16Q41-I/SS drives high-resolution LED dimming through its 16-bit PWM with complementary outputs, achieving smooth logarithmic dimming curves down to 0.1% duty cycle without visible flicker. The two 8-bit DACs can generate programmable current references for constant-current LED drivers. With 64 KB Flash, designers can implement DMX or DALI protocol stacks directly on-chip. The wide 1.8V to 5.5V operating range supports both 3.3V logic-level and 5V LED-driver analog references in a single design, enabling architectural lighting controllers and horticulture LED panels.
Recommended
Battery-Powered IoT Sensor Node
The PIC18F16Q41-I/SS powers low-duty-cycle IoT sensor nodes by combining deep-sleep current under 1 microamp with rapid 64 MHz wake-up execution. Its DMA channels move ADC samples to memory without CPU intervention, extending battery life during periodic sensing bursts. With 64 KB Flash, designers can implement secure firmware update routines, sensor fusion algorithms, and BLE/WiFi co-processor command interfaces. The wide 1.8V minimum operating voltage enables direct connection to single-cell Li-ion or two-cell alkaline battery stacks without boost converters.
Recommended
Low-Cost BLDC Motor Control
The PIC18F16Q41-I/SS supports low-cost brushless DC motor control through its 16-bit PWM with complementary outputs and programmable dead-band generators, eliminating the need for external gate-driver timing circuits. The on-chip op-amp and ADC form a complete back-EMF sensing channel for sensorless commutation. With 64 MHz CPU and DMA-driven ADC sampling, control loop execution is achievable under 20 microseconds per PWM cycle. The 20-pin SSOP package fits compact motor-control daughter boards for fans, pumps, and small appliance drives.
Recommended
Home Appliance Control Panel
The PIC18F16Q41-I/SS serves as a cost-effective main controller for washing machines, induction cooktops, and HVAC user-interface panels. The ADCC capacitive touch feature replaces mechanical buttons with sealed glass touch panels that withstand moisture and grease. The two 8-bit DACs generate variable references for proportional valve control and thermostat outputs. With 4 KB SRAM, multi-segment LCD driving via software PWM is achievable. The industrial -40C to +85C temperature rating ensures operation in unheated utility rooms and outdoor equipment enclosures.
Recommended
Recommended Products Summary
Engineering reference data for PIC18F16Q41-I/SS — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC18F16Q41T-I/SS | PIC18F15Q41-I/SS | PIC18F14Q41-I/SO |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 20-SSOP | 20-SSOP - same | 20-SSOP - same | 20-SOIC (different body width and pitch) |
| Flash Memory | 64 KB | 64 KB | 32 KB | 16 KB |
| SRAM | 4 KB | 4 KB | 4 KB | 1 KB |
| EEPROM | 512 bytes | 512 bytes | 512 bytes | 256 bytes |
| Maximum CPU Frequency | 64 MHz | 64 MHz | 64 MHz | 64 MHz |
| ADCC with CVD Touch Support | Yes | Yes | Yes | Yes |
| On-chip Op-amp | 1 | 1 | 1 | 1 |
| DAC Modules | 2 x 8-bit | 2 x 8-bit | 2 x 8-bit | 2 x 8-bit |
| Operating Voltage | 1.8V to 5.5V | 1.8V to 5.5V | 1.8V to 5.5V | 1.8V to 5.5V |
| Approx Unit Price @ 100 | $1.55 | $1.55 | $1.30 | $1.10 |
Key Differentiators
- Largest Flash in the 20-pin Q41 SSOP family (vs PIC18F15Q41-I/SS)
- Capacitive touch hardware acceleration (vs PIC18F16Q40-I/P)
- Industrial temperature range on SSOP package (vs PIC18F16Q41T-I/SS)
Design Notes
Place a 100 nF decoupling capacitor within 5 mm of the VDD pin (pin 13) and a bulk 10 uF tantalum or ceramic capacitor near the VSS pin (pin 14). The ADCC analog supply AVdd is internally bonded to VDD on the 20-pin SSOP, so clean VDD layout is critical for ADC accuracy. Use a low-impedance ground plane and avoid routing high-current switching traces near the analog pins RA0-RA3.
The 20-pin SSOP has 0.65 mm pin pitch and 5.30 mm body width. Use 0.3 mm wide PCB traces between pads with at least 0.2 mm clearance. Solder paste stencil apertures should be 0.4 mm x 1.0 mm to prevent tombstoning on small passive components near the MCU. Keep the SSOP pin-1 indicator (dot or bevel) visible after reflow for inspection.
Do not confuse the PIC18F16Q41-I/SS (SSOP-20) with the PIC18F14Q41-I/SO (SOIC-20). Both are 20-pin but have different body widths (5.30 mm vs 7.50 mm) and pin pitch (0.65 mm vs 1.27 mm); they are not interchangeable without PCB redesign. Also note that the PIC18F15Q41-I/SS and PIC18F14Q41-I/SS have different Flash sizes and EEPROM densities - verify firmware fits before substituting.
When using the ADCC for capacitive touch sensing, route the CVD sensor traces as short and balanced as possible, with a guard trace connected to a quiet low-impedance pin (such as a DAC output held at mid-rail). Avoid routing touch traces parallel to high-frequency PWM or switching signals. Use the internal ADC channel cross-multiplexing feature to reduce coupling to adjacent pins.
Compliance Information
RoHS and REACH compliant per Microchip product declaration. SSOP-20 package supplied in lead-free (Pb-free) finish. Not AEC-Q100 qualified; for automotive designs consider the PIC18F16Q41-E/SS extended-temperature or AEC-Q100 qualified PIC18 variants. Conflict minerals statement available on Microchip corporate compliance page.
