PIC18F15Q41T-I/SO - 32KB Flash 8-bit MCU, 64MHz | Microchip
MPN: PIC18F15Q41T-I/SO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.85 | $1.85 |
| 10 | $1.67 | $16.70 |
| 100 | $1.49 | $149.00 |
| 500 | $1.32 | $660.00 |
| 1,000 | $1.18 | $1,180.00 |
PIC18F15Q41T-I/SO Overview
A PIC microcontroller (MCU) is a compact, low-power, programmable integrated circuit combining a CPU, memory (Flash/RAM/EEPROM), and peripherals on a single die. Within the broader taxonomy it belongs to the 8-bit MCU class, which sits below 16-bit dsPIC and 32-bit ARM Cortex-M devices in performance and above discrete logic in integration. PIC MCUs typically use a RISC Harvard architecture with separate program and data buses, executing one instruction per clock cycle (excluding branches), giving predictable timing for embedded control loops.
Key differentiating features include Direct Memory Access (DMA), Peripheral Pin Select (PPS) for flexible I/O mapping, and zero-crossing detection hardware that simplifies AC line-sensing designs. Communication interfaces include UART, SPI, and I2C, while the integrated op-amp eliminates external analog front-end components for many sensor-conditioning circuits.
Typical applications span consumer white goods, LED lighting controllers, battery-powered IoT sensor nodes, motor control for small DC fans and pumps, and touch/proximity user interfaces. The wide 1.8V to 5.5V operating range makes it suitable for both 3.3V and 5V systems directly without level shifters.
When designing with this part, ensure the high-temperature operating range (-40C to +85C for the -I grade) is observed for industrial enclosures, and use the PPS feature to remap peripheral functions to free I/O pins when adding functions late in the design cycle. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for PIC18F15Q41T-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 PIC18F15Q41T-I/SO (same form factor and footprint) — differing in ADC, DAC, PWM, Package, Program Memory (Flash).
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC18F15Q41-I/SO
✅ Drop-In✓ In Stock
$1.05 / Unit
View Datasheet →PIC18F15Q41-I/SS
✅ Drop-In✓ In Stock
$0.95 / Unit
View Datasheet →PIC18F14Q41T-I/SO
✅ Drop-In✓ In Stock
$0.78 / Unit
View Datasheet →PIC18F14Q41-I/SO
✅ Drop-In✓ In Stock
$1.52 / Unit
View Datasheet →PIC18F14Q41T-I/SO
✅ Drop-In✓ In Stock
$0.78 / Unit
View Datasheet →PIC18F06Q40T-I/ST
✅ Drop-In✓ In Stock
$0.94 / Unit
View Datasheet →PIC18F15Q41T-I/SO Maximum Ratings & Electrical Characteristics
| Core | PIC18 8-bit RISC |
| CPU Speed | 64 MHz |
| Program Memory (Flash) | 32 KB (32K x 8) |
| RAM | 2 KB |
| EEPROM | 512 bytes |
| ADC | 12-bit ADC with Computation (ADCC) |
| DAC | 8-bit DAC |
| Operational Amplifier | On-chip op-amp |
| PWM | 16-bit PWM |
| DMA | Yes |
| PPS | Peripheral Pin Select |
| Communication | UART, SPI, I2C |
| Operating Voltage | 1.8 V to 5.5 V |
| Operating Temperature | -40C to +85C (Industrial) |
| Package | 20-pin SOIC |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
PIC18F15Q41T-I/SO Pin Configuration
| Pin 1 | RA5 — GPIO port A bit 5 / analog input |
| Pin 2 | RA4 — GPIO port A bit 4 / analog input |
| Pin 3 | RA3 — GPIO port A bit 3 / analog input |
| Pin 4 | RC0 — GPIO port C bit 0 |
| Pin 5 | RC1 — GPIO port C bit 1 |
| Pin 6 | RC2 — GPIO port C bit 2 |
| Pin 7 | RC3 — GPIO port C bit 3 / SCL |
| Pin 8 | RC4 — GPIO port C bit 4 / SDA |
| Pin 9 | RC5 — GPIO port C bit 5 |
| Pin 10 | RB7 — GPIO port B bit 7 |
| Pin 11 | RB5 — GPIO port B bit 5 |
| Pin 12 | RB4 — GPIO port B bit 4 |
| Pin 13 | RB3 — GPIO port B bit 3 |
| Pin 14 | RB2 — GPIO port B bit 2 |
| Pin 15 | RB1 — GPIO port B bit 1 |
| Pin 16 | RB0 — GPIO port B bit 0 |
| Pin 17 | RA0 — GPIO port A bit 0 / ICSPDAT |
| Pin 18 | RA1 — GPIO port A bit 1 / ICSPCLK |
| Pin 19 | VSS — Ground |
| Pin 20 | VDD — Positive supply |
Typical Applications
PIC18F15Q41T-I/SO is suitable for 6 applications: Sensor Signal Conditioning, LED Lighting Control, Battery-Powered IoT Nodes, Small Motor and Fan Control, Touch and Proximity Sensing, Consumer White Goods.
Sensor Signal Conditioning
The PIC18F15Q41T-I/SO's on-chip operational amplifier eliminates external analog front-end ICs for many sensor types. Its 12-bit ADCC delivers better than 0.024% resolution (1 LSB of 4096), enabling accurate thermistor, RTD, and strain-gauge readouts at sample rates above 100 kSPS. With DMA offloading ADC transfers, the 64 MHz CPU is free for filter math, calibration, and I/O housekeeping.
Recommended
LED Lighting Control
The PIC18F15Q41T-I/SO integrates a 16-bit PWM and DMA for flicker-free dimming across multiple LED strings. With the 8-bit DAC, smooth color-mixing transitions are generated without CPU overhead, and the 64 MHz CPU runs Commutation algorithms for high-power RGBW fixtures. The 1.8V-5.5V range supports both battery-powered and mains-derived supply rails.
Recommended
Battery-Powered IoT Nodes
For wireless sensor nodes, the PIC18F15Q41T-I/SO's 1.8V minimum supply enables direct connection to single-cell Li-Ion or two-AA battery stacks without boost regulators. The DMA engine lets the CPU sleep while ADC conversions complete, and the on-chip op-amp drives piezo or MEMS sensors without external bias circuits, extending battery life in remote IoT deployments.
Recommended
Small Motor and Fan Control
The 16-bit PWM combined with the ADCC makes the PIC18F15Q41T-I/SO well suited to BLDC and brushed DC motor commutation loops at switching frequencies above 100 kHz. DMA keeps current-sense sampling synchronized without CPU intervention, while PPS allows flexible pin assignment of PWM outputs to FET gate drivers. Typical loops run at 8-32 kHz PWM.
Recommended
Touch and Proximity Sensing
The PIC18F15Q41T-I/SO's 12-bit ADCC plus on-chip op-amp support mTouch capacitive touch sensing directly on PCB pads, eliminating dedicated touch ICs. Zero-crossing detection hardware simplifies AC-line-sensing applications. DMA keeps touch-scanning background tasks off the main loop, maintaining low-latency user response under 10 ms.
Recommended
Consumer White Goods
For washing machines, dishwashers, and small appliances, the PIC18F15Q41T-I/SO offers the motor control, sensor interface, and user I/O integration to replace multiple discrete components. PPS enables flexible front-panel button matrices and rotary encoders. The 20-pin SOIC and industrial temperature range suit humid, vibration-prone appliance environments.
Recommended
Recommended Products Summary
Engineering reference data for PIC18F15Q41T-I/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC18F15Q41-I/SO | PIC18F14Q41T-I/SO | PIC18F06Q40T-I/ST |
|---|---|---|---|---|
| Package | 20-pin SOIC | 20-pin SOIC - same | 20-pin SOIC (carrier) - same | 20-pin TSSOP - same 20-pin family |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core | PIC18 8-bit | PIC18 8-bit | PIC18 8-bit | PIC18 8-bit |
| CPU Speed | 64 MHz | 64 MHz | 64 MHz | 64 MHz |
| Flash Memory | 32 KB | 32 KB | 32 KB | 8 KB (-75%) |
| RAM | 2 KB | 2 KB | 2 KB | 512 B (-75%) |
| ADC | 12-bit ADCC | 12-bit ADCC | 12-bit ADCC | 10-bit ADCC (-2-bit) |
| On-chip Op-amp | Yes | Yes | Yes | No |
| 16-bit PWM | Yes | Yes | Yes | Yes (lower instance count) |
| 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 |
Key Differentiators
- On-chip operational amplifier reduces BOM (vs PIC18F06Q40T-I/ST)
- 32 KB Flash vs 8 KB on smaller family (vs PIC18F06Q40T-I/ST)
- 12-bit ADCC vs 10-bit ADCC on Q40 family (vs PIC18F06Q40T-I/ST)
Design Notes
The PIC18F15Q41T-I/SO accepts 1.8V-5.5V on VDD (pin 20) and VSS (pin 19). Place a 100 nF decoupling capacitor as close as possible to VDD with a 4.7 uF bulk capacitor on the same rail. For ADC accuracy, add a ferrite bead or 10 ohm resistor between VDD and AVDD if present, and a dedicated 100 nF cap on AVDD. Avoid switching the ADC sampling while the CPU executes high-current operations.
Use PPS (Peripheral Pin Select) to remap UART, SPI, I2C, and PWM to free GPIO pins without rewiring the PCB. The 20-pin SOIC has limited ground connections, so dedicate pin 19 as VSS and route a continuous ground pour beneath the part. For noisy motor-control layouts, separate analog and digital ground planes and stitch them under the MCU's VSS pin.
Estimated: MCLR (pin 1, RA2 with MCLR function) must be pulled high via a 10 kohm resistor for normal operation. Forgetting this resistor is the single most common cause of failed PIC18 designs. Also, configure unused pins as outputs low (not inputs) to avoid floating-pin current draw above 1 mA per pin. The on-chip op-amp requires explicit configuration in software before any ADC reading is valid.
Compliance Information
RoHS and lead-free status confirmed via Microchip product page; halogen-free status not explicitly stated. AEC-Q100 not applicable for industrial-grade -I part (use -E automotive variant if required).
