PIC18F16Q41T-I/SS - 8-bit 64MHz 64KB Flash MCU | Microchip
MPN: PIC18F16Q41T-I/SS ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.46 | $2.46 |
| 10 | $2.21 | $22.10 |
| 100 | $1.96 | $196.00 |
| 500 | $1.74 | $870.00 |
| 1,000 | $1.55 | $1,550.00 |
PIC18F16Q41T-I/SS Overview
An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data path, optimized for deterministic real-time control, low power, and ease of programming. PIC microcontrollers sit in the broader taxonomy of microcontroller -> embedded processor -> semiconductor IC, and the PIC18 family in particular adds hardware multiplier and linear memory addressing versus older PIC16 designs. This PIC18-Q41 family distinguishes itself with analog-focused peripherals, making it a hybrid between a traditional 8-bit MCU and a small mixed-signal data-acquisition front-end.
Key features include a 12-bit ADC with Computation (ADCC) supporting Capacitive Voltage Divider (CVD) techniques for advanced touch sensing, two 8-bit DAC modules, an on-chip operational amplifier, configurable logic cells, and 16-bit PWM channels. The 64 KB of Flash allows full-speed application code plus a bootloader, while the 512-byte EEPROM offers non-volatile parameter storage without external memory. Core-independent peripherals like CLC, PWM and timers can operate without CPU intervention, reducing firmware complexity.
Typical applications include capacitive touch user interfaces, sensor signal conditioning, LED lighting control loops, low-cost closed-loop fans and small-motor control, and battery-powered IoT end nodes where every milliamp matters. Industrial temperature range (-40C to +85C) and the wide 1.8 V to 5.5 V VDD range let the same part serve 3.3 V and 5 V designs without level shifters.
When designing with this MCU, route the analog AVSS/AVDD pins separately from digital supplies and keep the 0.1 uF VDD decoupling capacitor within 3 mm of the pin to preserve ADC SNR. The T-suffix part is supplied in Tape & Reel packaging for high-volume SMT lines.
Drop-in alternatives for PIC18F16Q41T-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 PIC18F16Q41T-I/SS (same form factor and footprint) — differing in Package, ADC, PWM, Program Memory (Flash), Core.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC18F16Q41-I/SS
✅ Drop-In✓ In Stock
$1.22 / Unit
View Datasheet →PIC18F16Q41-E/SS
✅ Drop-In✓ In Stock
$1.18 / Unit
View Datasheet →PIC18F15Q41T-I/SS
✅ Drop-In✓ In Stock
$0.85 / Unit
View Datasheet →PIC18F14Q41T-I/SO
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$0.78 / Unit
View Datasheet →PIC18F16Q40T-I/SS
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$1.18 / Unit
View Datasheet →PIC18F16Q41T-I/SS Maximum Ratings & Electrical Characteristics
| Family | PIC18-Q41 |
| Core | PIC18 8-bit |
| Program Memory (Flash) | 64 KB (64K x 8) |
| SRAM | 4 KB |
| EEPROM | 512 bytes |
| Maximum CPU Frequency | 64 MHz |
| Supply Voltage (VDD) | 1.8 V to 5.5 V |
| Operating Temperature | -40C to +85C (Industrial) |
| ADC | 12-bit ADC with Computation (ADCC) |
| DAC | 2 x 8-bit DAC |
| Operational Amplifier | 1 on-chip Op-Amp |
| PWM | 16-bit PWM channels |
| Package | 20-pin SSOP |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
PIC18F16Q41T-I/SS Pin Configuration
| Pin 1 | RA5 — Digital I/O / ADC input |
| Pin 2 | RA4 — Digital I/O / ADC input |
| Pin 3 | RA3 — Digital I/O / ADC input / MCLR |
| Pin 4 | RA2 — Digital I/O / ADC input |
| Pin 5 | RA1 — Digital I/O / ADC input / OPA1IN+ |
| Pin 6 | RA0 — Digital I/O / ADC input / OPA1IN- |
| Pin 7 | VSS — Ground |
| Pin 8 | VDD — Positive supply |
| Pin 9 | RB7 — Digital I/O / ICSPCLK |
| Pin 10 | RB6 — Digital I/O / ICSPDAT |
| Pin 11 | RB5 — Digital I/O / ADC input |
| Pin 12 | RB4 — Digital I/O / ADC input |
| Pin 13 | RB3 — Digital I/O / ADC input |
| Pin 14 | RB2 — Digital I/O / ADC input |
| Pin 15 | RB1 — Digital I/O / ADC input |
| Pin 16 | RB0 — Digital I/O / ADC input |
| Pin 17 | AVSS — Analog ground |
| Pin 18 | AVDD — Analog supply |
| Pin 19 | RC7 — Digital I/O / OPA1OUT |
| Pin 20 | RC6 — Digital I/O |
Typical Applications
PIC18F16Q41T-I/SS is suitable for 6 applications: Capacitive Touch User Interface, Industrial Sensor Signal Conditioning, LED Lighting and Color Control, Small DC Motor and Fan Control, Battery-Powered IoT End Node, Automotive Body and Cabin Electronics.
Capacitive Touch User Interface
The PIC18F16Q41T-I/SS is built around the 12-bit ADC with Computation (ADCC) that supports Capacitive Voltage Divider (CVD) techniques. CVD enables robust touch button, slider, and wheel decoding with automatic averaging, oversampling, and threshold comparison handled in hardware - freeing the CPU from polling. With 64 KB of Flash the device can run a USB or UART command interpreter plus a touch event queue without external memory.
Recommended
Industrial Sensor Signal Conditioning
The integrated on-chip operational amplifier, two 8-bit DACs, and 12-bit ADCC let the PIC18F16Q41T-I/SS replace a discrete op-amp plus external MCU in bridge-sensor, RTD, or thermistor front-ends. The wide 1.8 V to 5.5 V VDD range supports 3.3 V and 5 V analog rails. Core-independent peripherals (CLC, timers) can wake the CPU only on threshold crossings, dropping average current in battery-powered sensor nodes.
Recommended
LED Lighting and Color Control
The 16-bit PWM channels of the PIC18F16Q41T-I/SS deliver the resolution required for smooth LED dimming without visible flicker. Combined with the two 8-bit DACs, the same MCU can drive RGB strings and analog current-set references. The 64 MHz CPU clock supports DMX, DALI, or BLE command parsing in parallel with the lighting loop, while 512 bytes of EEPROM stores calibration and color-temperature preferences.
Recommended
Small DC Motor and Fan Control
PIC18F16Q41T-I/SS closed-loop DC motor or fan control is supported by 16-bit PWM with hardware fault shutdown and the on-chip op-amp for back-EMF or current-sense amplification. 4 KB of SRAM is sufficient for a PI/D control loop plus UART telemetry. The industrial -40C to +85C operating range covers automotive cabin ventilation and HVAC blower applications.
Recommended
Battery-Powered IoT End Node
Battery-powered IoT end nodes benefit from the PIC18F16Q41T-I/SS sleep currents and the core-independent peripherals that can wake the CPU only on a meaningful event. The on-chip op-amp can amplify a low-output sensor directly into the 12-bit ADCC, removing an external analog IC. 1.8 V to 5.5 V operation supports single-cell Li-Ion, two-cell AA, or 3.3 V coin-cell designs without level shifting.
Recommended
Automotive Body and Cabin Electronics
Within automotive body electronics, the PIC18F16Q41T-I/SS drives mirror-control switches, ambient lighting PWM, and capacitive touch panels on door trims. The 16-bit PWM produces smooth fade transitions for interior mood lighting, while the ADCC decodes up to a dozen touch electrodes via CVD. Designers typically pair the MCU with a CAN or LIN transceiver for body-network connectivity.
Recommended
Recommended Products Summary
Engineering reference data for PIC18F16Q41T-I/SS — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC18F16Q41-I/SS | PIC18F16Q41-E/SS | PIC18F15Q41T-I/SS | PIC18F14Q41T-I/SO | PIC18F16Q40T-I/SS |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 20-pin SSOP | 20-pin SSOP - same | 20-pin SSOP - same | 20-pin SSOP - same | 20-pin SSOP - same | 20-pin SSOP - same |
| Flash Memory | 64 KB | 64 KB | 64 KB | 32 KB (-50%) | 16 KB (-75%) | 64 KB |
| SRAM | 4 KB | 4 KB | 4 KB | 2 KB (-50%) | 1 KB (-75%) | 4 KB |
| EEPROM | 512 bytes | 512 bytes | 512 bytes | 256 bytes (-50%) | 256 bytes (-50%) | 512 bytes |
| On-chip Op-Amp | Yes | Yes | Yes | Yes | Yes | No |
| DAC Modules | 2 x 8-bit | 2 x 8-bit | 2 x 8-bit | 2 x 8-bit | 1 x 8-bit (-50%) | None |
| Temperature Grade | Industrial (-40C to +85C) | Industrial (-40C to +85C) | Extended (-40C to +125C) | Industrial (-40C to +85C) | Industrial (-40C to +85C) | Industrial (-40C to +85C) |
Key Differentiators
- Integrated on-chip op-amp plus two 8-bit DACs in the 20-pin SSOP package (vs PIC18F16Q40T-I/SS)
- 12-bit ADC with Computation (ADCC) for hardware CVD touch sensing (vs PIC18F16Q40T-I/SS)
- 64 KB Flash in 20-pin SSOP for compact touch + IoT designs (vs PIC18F15Q41T-I/SS)
Design Notes
Decouple the analog and digital supplies with separate 0.1 uF ceramic capacitors placed within 3 mm of the AVSS/AVDD pins. The PIC18F16Q41T-I/SS integrates a 12-bit ADCC whose SNR is degraded by digital switching noise riding on VDD. The on-chip voltage regulator still requires a bulk 1 uF to 10 uF VDD capacitor close to pin 8 for transient load response.
Route the ICSPDAT and ICSPCLK signals (RB6/RB7) on the bottom layer or shielded by a ground pour to avoid coupling programming noise into the analog channels. Keep CVD-driven traces short and of equal length to balance touch capacitance. For capacitive touch layouts, add a hatched ground plane with trace-to-ground spacing specified in Microchip application note TB3065.
Do not enable the weak pull-up on RA3/MCLR if the device is also being used as an ICSP entry pin - this can confuse the programmer. Always include a 10 kohm pull-up on MCLR and a 100 nF cap to ground for noise filtering. Verify that the configuration bits select the internal oscillator only after the supply rail has stabilized, otherwise an out-of-spec startup can occur.
Compliance Information
RoHS and lead-free per Microchip product page. AEC-Q100 qualification not applicable for industrial -I grade; -E grade parts offer extended temperature only.
