PIC18F16Q41T-I/SO - 8-bit MCU, 64KB Flash, 64MHz, 20-SOIC | Microchip
MPN: PIC18F16Q41T-I/SO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.95 | $1.95 |
| 10 | $1.74 | $17.40 |
| 100 | $1.55 | $155.00 |
| 500 | $1.39 | $695.00 |
| 1,000 | $1.24 | $1,240.00 |
| 3,000 | $1.1 | $3,300.00 |
PIC18F16Q41T-I/SO Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU, memory, and programmable I/O peripherals into one package. The PIC18 architecture is an 8-bit RISC Harvard-design family from Microchip that emphasizes deterministic instruction execution, low power consumption, and rich on-chip peripherals. The Q41 sub-family in particular extends the PIC18 line with high-resolution analog (12-bit ADCC with capacitive voltage divider support) and digital signal conditioning (DMA, PPS, math accelerator) for sensor-edge and motor-control designs.
Key features of the PIC18F16Q41T-I/SO include 64KB Flash, 4KB RAM, 512B EEPROM, 64MHz core, 12-bit ADCC with CVD for capacitive touch, two 8-bit DACs, on-chip op-amp, two comparators, 16-bit PWM, DMA, peripheral pin select (PPS), and a math accelerator for sensor signal processing. The 12-bit ADCC automates Capacitive Voltage Divider (CVD) measurement for capacitive touch and oversampling for noise reduction, while the math accelerator offloads sensor filtering math from the CPU.
Typical applications include capacitive touch user interfaces, sensor signal conditioning with on-chip op-amp buffering, LED lighting and PWM motor control, battery-powered IoT sensor nodes with low-power sleep modes, and small appliances requiring mixed-signal integration. The wide operating voltage and integrated peripherals reduce external component count.
When designing with this MCU, ensure the operating voltage range covers battery or USB scenarios and add 0.1uF decoupling near each VDD pin. Use the PPS feature to remap peripherals to any I/O pin, simplifying PCB layout when a design change is needed late in the cycle.
Drop-in alternatives for PIC18F16Q41T-I/SO — 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/SO (same form factor and footprint) — differing in DAC, PWM, ADC, Program Memory (Flash), Package.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC18F16Q41-I/SO
✅ Drop-In✓ In Stock
$1.2 / Unit
View Datasheet →PIC18F16Q41-E/SO
✅ Drop-In✓ In Stock
$1.48 / Unit
View Datasheet →PIC18F16Q40-I/SO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18F16Q40-E/SO
✅ Drop-In✓ In Stock
$1.2 / Unit
View Datasheet →PIC18F15Q41T-I/SO
✅ Drop-In✓ In Stock
$1.18 / Unit
View Datasheet →PIC18F16Q41T-I/SO Maximum Ratings & Electrical Characteristics
| Product Family | PIC18FxxQ41 |
| Core Architecture | PIC18 8-bit RISC |
| Program Memory (Flash) | 64 KB |
| Data SRAM | 4 KB |
| Data EEPROM | 512 B |
| Maximum CPU Clock | 64 MHz |
| Package | 20-pin SOIC |
| ADC | 12-bit with Computation (ADCC) |
| DAC | 2 x 8-bit DAC modules |
| Operational Amplifier | 1 on-chip op-amp |
| Comparators | 2 |
| PWM | 16-bit PWM module |
| DMA | Yes |
| Peripheral Pin Select (PPS) | Yes |
| Temperature Grade | Industrial (-40C to +85C) |
| RoHS Status | Compliant |
PIC18F16Q41T-I/SO Pin Configuration
| Pin 1 | RA5 — Port A bit 5 / I/O |
| Pin 2 | RA4 — Port A bit 4 / I/O |
| Pin 3 | RA3 — Port A bit 3 / I/O |
| Pin 4 | RA2 — Port A bit 2 / I/O |
| Pin 5 | RA1 — Port A bit 1 / I/O (ICSPCLK) |
| Pin 6 | RA0 — Port A bit 0 / I/O (ICSPDAT) |
| Pin 7 | VSS — Ground reference |
| Pin 8 | VDD — Positive supply voltage |
| Pin 9 | RA7 — Port A bit 7 / I/O |
| Pin 10 | RA6 — Port A bit 6 / I/O |
| Pin 11 | RC5 — Port C bit 5 / I/O (PPS remappable) |
| Pin 12 | RC4 — Port C bit 4 / I/O (PPS remappable) |
| Pin 13 | RC3 — Port C bit 3 / I/O (PPS remappable) |
| Pin 14 | RC2 — Port C bit 2 / I/O (PPS remappable) |
| Pin 15 | RC1 — Port C bit 1 / I/O (PPS remappable) |
| Pin 16 | RC0 — Port C bit 0 / I/O (PPS remappable) |
| Pin 17 | OSC2 — Crystal/clock output or digital I/O |
| Pin 18 | OSC1 — Crystal/clock input or digital I/O |
| Pin 19 | RB7 — Port B bit 7 / I/O (PPS remappable) |
| Pin 20 | RB6 — Port B bit 6 / I/O (PPS remappable) |
Typical Applications
PIC18F16Q41T-I/SO is suitable for 6 applications: Capacitive Touch User Interface, Sensor Signal Conditioning, PWM Motor and Lighting Control, Battery-Powered IoT Sensor Node, Small Appliance Control Board, Industrial Process Transmitter.
Capacitive Touch User Interface
The PIC18F16Q41T-I/SO is purpose-built for capacitive touch interfaces thanks to its 12-bit ADCC with on-chip Capacitive Voltage Divider (CVD) hardware. The ADCC automates charge-measurement sweeps and threshold comparison in the background, freeing the CPU from polling and allowing consistent touch response under 10ms. The math accelerator executes touch filter coefficients (IIR/FIR) without waking the CPU, while the on-chip op-amp can buffer analog sensor electrodes. Typical designs place the MCU near the touch panel, with the SOIC-20 package offering standard reflow compatibility and PPS routing flexibility for board-level optimization.
Recommended
Sensor Signal Conditioning
The PIC18F16Q41T-I/SO integrates a 12-bit ADCC, two 8-bit DACs, an on-chip operational amplifier, and two comparators in a single SOIC-20 device, enabling direct interface to analog sensors such as thermistors, photodiodes, and bridge transducers without external op-amps. The ADCC's averaging and oversampling features improve effective resolution to beyond 14 bits for low-bandwidth signals, while the math accelerator processes calibration curves and compensation polynomials on-chip. The two 8-bit DACs can generate bias voltages or setpoint references, simplifying the BOM for closed-loop sensor systems.
Recommended
PWM Motor and Lighting Control
The PIC18F16Q41T-I/SO's 16-bit PWM module delivers high-resolution duty-cycle control for DC brushed motors, LED lighting drivers, and small BLDC fan control. The DMA engine moves PWM update values into the duty registers without CPU overhead, supporting flicker-free LED dimming curves and synchronized multi-channel lighting. Combined with the on-chip comparators for current sensing and the math accelerator for control loops, the device can run a full PID motor-control algorithm at 8kHz loop bandwidth while leaving CPU bandwidth for housekeeping.
Recommended
Battery-Powered IoT Sensor Node
The PIC18F16Q41T-I/SO supports Sleep and Idle modes with multiple wake sources including external interrupts, WDT, and ADC threshold triggers, enabling sub-microamp average current for battery-powered IoT nodes. The ADCC can perform autonomous conversions in Sleep with the on-chip op-amp active, waking the CPU only when a meaningful threshold is crossed. The wide operating voltage range from 1.8V to 5.5V supports direct connection to single-cell Li-ion or 2x AA chemistries without a separate LDO.
Recommended
Small Appliance Control Board
The PIC18F16Q41T-I/SO's combination of 64KB Flash, 4KB SRAM, two comparators, and PPS flexibility suits compact white-goods and kitchen-appliance controllers with mixed analog and digital I/O. The peripheral pin select (PPS) feature allows firmware-driven remapping of UART, SPI, and I2C to any digital I/O pin, which accelerates late-stage PCB layout changes. The on-chip op-amp and DACs handle user-knob position sensing or temperature measurement, while the 16-bit PWM drives indicator LEDs or relay drivers.
Recommended
Industrial Process Transmitter
The PIC18F16Q41T-I/SO's industrial -40C to +85C operating temperature, 12-bit ADCC, on-chip op-amp, and robust peripheral mix make it suitable for compact 4-20mA process transmitters and field sensor interfaces. The DMA engine handles continuous ADCC data streaming into SRAM without CPU intervention, freeing bandwidth for HART or Modbus protocol stacks in firmware. The math accelerator executes sensor linearization and compensation math, while PPS enables late-stage pin assignment flexibility for varying field connector pinouts.
Recommended
Recommended Products Summary
Engineering reference data for PIC18F16Q41T-I/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC18F16Q41-I/SO | PIC18F16Q41-E/SO | PIC18F16Q40-I/SO | PIC18F16Q40-E/SO | PIC18F15Q41T-I/SO |
|---|---|---|---|---|---|---|
| Package | 20-SOIC | 20-SOIC - same | 20-SOIC - same | 20-SOIC - same | 20-SOIC - same | 20-SOIC - same |
| Brand | Microchip Technology | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same |
| Flash Memory | 64 KB | 64 KB | 64 KB | 64 KB | 64 KB | 32 KB (-50%) |
| SRAM | 4 KB | 4 KB | 4 KB | 4 KB | 4 KB | 2 KB (-50%) |
| On-Chip Op-Amp | Yes | Yes | Yes | No | No | Yes |
| Math Accelerator | Yes | Yes | Yes | No | No | Yes |
| Temperature Grade | Industrial -40C to +85C | Commercial 0C to +70C | Extended -40C to +125C | Industrial -40C to +85C | Extended -40C to +125C | Industrial -40C to +85C |
| ADC | 12-bit ADCC with CVD | 12-bit ADCC with CVD | 12-bit ADCC with CVD | 12-bit ADCC with CVD | 12-bit ADCC with CVD | 12-bit ADCC with CVD |
| PWM | 16-bit PWM module | 16-bit PWM module | 16-bit PWM module | 16-bit PWM module | 16-bit PWM module | 16-bit PWM module |
Key Differentiators
- 12-bit ADCC with Capacitive Voltage Divider (CVD) hardware (vs PIC18F15Q41T-I/SO)
- On-chip operational amplifier integrated in Q41 family (vs PIC18F16Q40-I/SO)
- Math accelerator for sensor signal processing (vs PIC18F16Q40-E/SO)
Design Notes
Place a 0.1uF ceramic decoupling capacitor as close as possible to each VDD pin (pin 8) and a bulk 10uF tantalum or ceramic capacitor on the VDD rail. For battery applications using 2xAA cells or single-cell Li-ion, ensure the operating voltage range of 1.8V to 5.5V is respected under worst-case load transients. Add a ferrite bead on VDD if switching loads share the same rail to suppress digital noise coupling into analog measurements.
Route the SOIC-20 package with standard 1.27mm pitch SOIC footprint per JEDEC MS-013. Use the Peripheral Pin Select (PPS) feature to remap UART/SPI/I2C to any digital I/O, which simplifies PCB layout when late-stage changes are required. For capacitive touch designs using ADCC CVD, route the touch electrodes as short traces with ground guarding to minimize parasitic capacitance and improve touch SNR.
Do not enable both the on-chip op-amp output and the DAC output on the same pin without verifying the pin alternate function table. Ensure the math accelerator is enabled in MCC configuration if your firmware uses the MAC instructions, otherwise the math instructions will fall back to emulated software. For low-power Sleep modes, verify the WDT, ADC threshold, or interrupt wake source is selected before disabling the CPU to avoid un-wakeable lockups.
Compliance Information
RoHS compliant per Microchip product page. SOIC-20 package is lead-free and MSL-1 rated. Not AEC-Q100 qualified; refer to automotive-grade PIC18 cousins for AEC-Q100 needs.
