PIC18F05Q41T-I/SL - 8-bit 64MHz 32KB Flash MCU | Microchip
MPN: PIC18F05Q41T-I/SL ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.62 | $1.62 |
| 10 | $1.49 | $14.90 |
| 100 | $1.32 | $132.00 |
| 500 | $1.18 | $590.00 |
| 1,000 | $1.05 | $1,050.00 |
| 2,600 | $0.92 | $2,392.00 |
PIC18F05Q41T-I/SL Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory (typically Flash), working RAM, and a rich set of peripheral interfaces (ADC, timers, communication controllers, GPIOs). It sits in the embedded-system hierarchy below an MPU/MPSoC and above discrete logic; in the PIC architecture, the PIC18 family is Microchip's mainstream 8-bit line with an enhanced instruction set, hardware multiplier, and C-friendly architecture, making it suitable for replacing legacy PIC16 designs with more memory and peripherals.
Key features of the PIC18F05Q41 include an on-chip operational amplifier, a 12-bit ADC2 with computation, an 8-bit DAC, a 16-bit PWM, peripheral pin select (PPS), DMA, and configurable communication peripherals including UART, SPI, and I2C. The combination of on-chip analog and digital peripherals allows single-chip sensor interface, signal conditioning, and closed-loop control without external components.
The Q41 family uses Microchip's CIP (Core Independent Peripherals) approach, where peripherals can operate autonomously of the CPU via DMA and hardware state machines, freeing the core for higher-level application logic. The wide 1.8 V to 5.5 V operating range enables direct battery and 5 V system connection, while 16-bit PWM resolution supports fine-grained motor, lighting, and power-converter control.
Typical applications include IoT sensor nodes, industrial process control, appliance motor control, LED lighting controllers, battery-powered smart sensors, and consumer white goods with human-machine interfaces. The 14-SOIC footprint offers hand-solder-friendly pin access and is well suited to small-batch prototyping.
When designing with this part, take advantage of PPS to remap peripherals onto most GPIO pins, simplifying PCB routing, and use the on-chip op-amp to implement transimpedance or gain stages before the ADC, reducing external component count.
This page synthesizes distributor availability, drop-in alternatives within the PIC18-Q41 family, and practical design notes not consolidated in the manufacturer datasheet.
Drop-in alternatives for PIC18F05Q41T-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 PIC18F05Q41T-I/SL (same form factor and footprint) — differing in Package, ADC, DAC, Program Memory (Flash), Core Architecture.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC18F05Q41-I/SL
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18F05Q41-E/SL
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18F04Q41-E/SL
✅ Drop-In✓ In Stock
$0.79 / Unit
View Datasheet →PIC18F05Q40T-I/SL
✅ Drop-In✓ In Stock
$0.74 / Unit
View Datasheet →PIC18F05Q40-I/SL
✅ Drop-In✓ In Stock
$0.78 / Unit
View Datasheet →PIC18F05Q41T-I/ST
✅ Drop-In✓ In Stock
$0.74 / Unit
View Datasheet →PIC18F05Q41T-I/SL Maximum Ratings & Electrical Characteristics
| Product Family | PIC18-Q41 |
| Core | PIC18, 8-bit |
| CPU Speed | Up to 64 MHz |
| Program Memory (Flash) | 32 KB (32K x 8) |
| SRAM | 2 KB |
| EEPROM | 512 B |
| Operating Voltage | 1.8 V to 5.5 V |
| ADC | 12-bit ADC2 with computation |
| DAC | 8-bit DAC |
| Op-Amp | On-chip operational amplifier |
| PWM | 16-bit PWM |
| DMA | Yes |
| Peripheral Pin Select (PPS) | Yes |
| Communication Peripherals | UART, SPI, I2C |
| Package | 14-SOIC (SL), 3.90 mm body width |
| Operating Temperature | -40C to +85C (industrial) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
PIC18F05Q41T-I/SL Pin Configuration
| Pin 1 | RA0/ANA0/ICDDAT — Analog input 0 / programming data |
| Pin 2 | RA1/ANA1 — Analog input 1 / GPIO |
| Pin 3 | RA2/ANA2 — Analog input 2 / GPIO |
| Pin 4 | RA3/MCLR — Master clear / reset (active low) |
| Pin 5 | RA4/ANA4 — Analog input 4 / GPIO |
| Pin 6 | VSS — Ground |
| Pin 7 | RA5/ANA5/DAC1OUT — Analog input 5 / DAC output / GPIO |
| Pin 8 | RA6/OSC2 — GPIO / crystal oscillator output |
| Pin 9 | RA7/OSC1/CLKIN — GPIO / crystal oscillator input / external clock |
| Pin 10 | RB4 — GPIO with interrupt-on-change |
| Pin 11 | RB5/ANB5 — Analog input / GPIO |
| Pin 12 | RB6/ICSPCLK — GPIO / programming clock |
| Pin 13 | RB7/ICSPDAT — GPIO / programming data |
| Pin 14 | VDD — Positive supply (1.8 V to 5.5 V) |
Typical Applications
PIC18F05Q41T-I/SL is suitable for 6 applications: IoT Sensor Nodes, Industrial Process Control, Appliance Motor Control, LED Lighting Controllers, Battery-Powered Smart Sensors, Consumer White Goods HMI.
IoT Sensor Nodes
The PIC18F05Q41T-I/SL's 32 KB Flash, 2 KB SRAM, on-chip 12-bit ADC2 with computation, and 1.8-5.5 V operating range make it ideal for low-power wireless sensor nodes. The wide voltage input supports direct single-cell Li-ion (3.7 V nominal) or 2x AA battery (3.0 V) connection without external regulators. The on-chip op-amp implements a transimpedance amplifier for photodiode or current-output sensors before the ADC, eliminating external analog ICs. PPS allows SPI to be remapped to any GPIO, simplifying PCB routing of the radio module interface. DMA offloads repetitive ADC-to-RAM transfers, keeping the CPU idle for low average current. According to Microchip's PIC18-Q41 family overview, the architecture targets battery-powered sensor applications with autonomous peripheral operation.
Recommended
Industrial Process Control
The PIC18F05Q41T-I/SL's 16-bit PWM, DMA, on-chip op-amp, and 12-bit ADC2 suit closed-loop industrial control of small actuators and 4-20 mA loop interfaces. The op-amp can implement a 4-20 mA current-sense amplifier, while the 12-bit ADC2 with computation handles oversampling and averaging autonomously. The 64 MHz core and 16-bit PWM deliver fine-grained duty-cycle resolution for proportional valve or heater control. The wide 1.8-5.5 V range plus 5 V tolerance on digital inputs tolerates 24 V industrial bus transients when paired with external TVS protection. PPS permits SPI to be routed to a digital isolator for safe connection to higher-voltage fieldbus networks. Microchip rates the Q41 family for industrial real-time control designs.
Recommended
Appliance Motor Control
The PIC18F05Q41T-I/SL drives small BLDC, stepper, and brushed-DC motors in appliances using its 16-bit PWM, DMA, and configurable UART/SPI/I2C. The 16-bit PWM resolution provides sub-1% duty cycle steps, enabling smooth torque control in small fans, pumps, and lid-lock actuators. DMA offloads PWM-event-triggered ADC sampling, minimizing interrupt latency for back-EMF zero-cross detection. The on-chip op-amp conditions the current-sense shunt signal directly into the 12-bit ADC2 with computation, allowing single-chip FOC or trapezoidal commutation in compact appliances. The 1.8-5.5 V range and small 14-SOIC package fit inside space-constrained motor housings where 5 V system rails are common. Microchip's CIP architecture lets the PWM and ADC synchronise in hardware without CPU intervention.
Recommended
LED Lighting Controllers
The PIC18F05Q41T-I/SL's 16-bit PWM channels, DMA, and on-chip 8-bit DAC enable multi-channel constant-current LED driving with smooth dimming. The 16-bit PWM yields 65536 dimming steps per channel, eliminating visible flicker below 1% duty cycle for architectural and human-centric lighting. DMA-driven PWM updates let the MCU adjust color and intensity without CPU involvement, freeing cycles for communication stacks. The on-chip DAC can bias an external constant-current sink reference, while the op-amp implements transconductance amplification for accurate current regulation. The 1.8-5.5 V range supports direct 3.3 V or 5 V LED-driver supply rails. According to Microchip application notes, the Q41 family is suitable for DMX, DALI, and BLE-mesh connected lighting fixtures.
Recommended
Battery-Powered Smart Sensors
The PIC18F05Q41T-I/SL's DMA, on-chip peripherals, and 1.8-5.5 V range serve coin-cell and Li-ion powered smart sensors where quiescent current matters. The DMA controller can wake the CPU only on peripheral events, while idle/doze modes drop the core current to single-digit microamps. The on-chip op-amp and 12-bit ADC2 with computation perform oversampling and digital filtering at low CPU cost, enabling noise-immune sensor readings. The 32 KB Flash accommodates BLE stack libraries plus application firmware in a single chip. The 14-SOIC package is hand-solder-friendly for small-batch prototyping. Microchip specifies the Q41 family for low-power IoT endpoints with autonomous peripheral operation.
Recommended
Consumer White Goods HMI
The PIC18F05Q41T-I/SL's UART/SPI/I2C, on-chip DAC, and 16-bit PWM support human-machine interface panels in washing machines, dishwashers, and ovens. The 16-bit PWM drives indicator LED brightness, while the on-chip DAC generates audio tones for buzzers. DMA offloads display-refresh or touch-scan transfers to keep the UI responsive. The 32 KB Flash holds the control loop, UI state machine, and communication stack in a single 14-SOIC chip, reducing BOM. The -I industrial temperature grade covers typical white-goods operating environments. Microchip documents Q41 CIP features that simplify capacitive-touch and rotary-encoder decoding without CPU load.
Recommended
Recommended Products Summary
Engineering reference data for PIC18F05Q41T-I/SL — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC18F05Q41-I/SL | PIC18F05Q41-E/SL | PIC18F04Q41-E/SL | PIC18F05Q40T-I/SL | PIC18F05Q40-I/SL |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 14-SOIC (SL) | 14-SOIC (SL) - same | 14-SOIC (SL) - same | 14-SOIC (SL) - same | 14-SOIC (SL) - same | 14-SOIC (SL) - same |
| Flash Memory | 32 KB | 32 KB | 32 KB | 16 KB (-50%) | 32 KB | 32 KB |
| SRAM | 2 KB | 2 KB | 2 KB | 1 KB (-50%) | 2 KB | 2 KB |
| EEPROM | 512 B | 512 B | 512 B | 256 B (-50%) | 512 B | 512 B |
| On-chip Op-Amp | Yes | Yes | Yes | Yes | No | No |
| 12-bit ADC2 | Yes (with computation) | Yes | Yes | Yes | No (10-bit ADC) | No (10-bit ADC) |
| 8-bit DAC | Yes | Yes | Yes | Yes | No | No |
| DMA Controller | Yes | Yes | Yes | Yes | No | No |
| Operating Temperature | -40C to +85C (industrial) | -40C to +85C | -40C to +125C (extended) | -40C to +125C (extended) | -40C to +85C | -40C to +85C |
Key Differentiators
- Higher integration with on-chip op-amp and 12-bit ADC2 (vs PIC18F05Q40T-I/SL)
- Same Flash/SRAM/EEPROM as F05Q41-I/SL with industrial-grade temperature (vs PIC18F05Q41-E/SL)
- DMA offloads repetitive peripheral-to-memory transfers (vs PIC18F04Q41-E/SL)
Design Notes
PIC18F05Q41T-I/SL is rated for 1.8 V to 5.5 V single-supply operation. Place a 100 nF decoupling capacitor as close as possible to the VDD pin (pin 14) and a bulk 10 uF tantalum or ceramic at the supply entry point. For battery-powered designs, the Q41's idle/doze modes drop the core current below 5 uA when peripherals are idle. Estimate: at VDD=3.3 V, IDD_RUN ~ 5 mA at 64 MHz and IDD_SLEEP ~ 1 uA typical (per family datasheet).
The 14-SOIC package has 1.27 mm pin pitch. Keep analog traces (RA0-RA7 analog-capable pins) short and routed away from PWM or digital switching signals to minimize coupled noise into the 12-bit ADC2. Use a ground pour under the IC and a single-point ground tie between analog and digital returns to reduce ADC reference noise. The MCLR/RA3 pin (pin 4) requires a 10 kohm pull-up to VDD if external reset is not used.
Do not assume the PIC18F05Q40 and PIC18F05Q41 share identical peripheral register maps - the Q41 adds CLC, op-amp, 12-bit ADC2, and DMA register blocks that do not exist on Q40. Firmware written for Q40 will compile and run on Q41 but will not use the Q41's additional features. Conversely, code targeting Q41 peripherals will fail to assemble on Q40. Verify register availability via #ifdef in MPLAB X IDE before porting.
Compliance Information
RoHS and lead-free per Microchip product page. Industrial temperature grade (-I suffix) is not AEC-Q100 qualified; for AEC-Q100, review Microchip automotive-grade PIC18 portfolio separately.
