PIC18F05Q41T-I/ST - 8-Bit 64MHz MCU, 32KB Flash, 14-TSSOP
MPN: PIC18F05Q41T-I/ST ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.42 | $1.42 |
| 10 | $1.28 | $12.80 |
| 100 | $1.07 | $107.00 |
| 500 | $0.94 | $470.00 |
| 1,000 | $0.83 | $830.00 |
| 3,000 | $0.74 | $2,220.00 |
PIC18F05Q41T-I/ST Overview
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, RAM, program memory, and peripherals on one die. The PIC18 family is Microchip's high-end 8-bit line, sitting between the baseline PIC10/12/16 family and the 16-bit dsPIC/PIC24 line in the broader PIC microcontroller taxonomy. Within power management and embedded control hierarchies, the PIC18F05Q41 belongs to the PIC18-Q41 sub-family, which targets low-power, mixed-signal designs where op-amps, ADCs, DACs, and 16-bit PWMs are needed alongside a deterministic 8-bit core.
Key features of the PIC18F05Q41 include an on-chip operational amplifier, a 12-bit ADC with Computation (ADC2), an 8-bit DAC, a 16-bit PWM module, and configurable Peripheral Pin Select (PPS) for flexible I/O mapping. The device operates from 1.8 V to 5.5 V across an industrial -40 °C to +85 °C temperature range and supports I2C, SPI (x2) and UART (x2) serial interfaces with DMA capability, enabling low-CPU-overhead data movement. These features make it well-suited to mixed-signal sensor front-ends and tightly closed-loop control tasks.
The PIC18-Q41 architecture pairs the standard PIC18 Harvard core with Core Independent Peripherals (CIPs) such as the CWG, NCO, and SMT timers, allowing complex sequencing to occur without CPU intervention. The combination of 32 KB self-programmable Flash, 256-byte data EEPROM emulation, and 2 KB SRAM provides ample headroom for state-machine firmware, while PPS lets designers remap digital peripherals onto nearly any I/O pin - useful when PCB routing constrains the layout.
Typical applications include sensor signal conditioning, LED lighting control, low-power IoT edge nodes, and battery-powered instrumentation where the on-chip op-amp front-ends a sensor and the 12-bit ADC2 digitizes the result. In motor-control and power-conversion tasks, the 16-bit PWM and configurable dead-time make it a fit for small brushed or stepper drive stages.
When designing with this MCU, plan the I/O mapping around PPS early - reassigning peripherals later can require re-routing. The wide 1.8 V to 5.5 V supply range lets a single part run from either a single-cell Li-ion or a regulated 3.3 V / 5 V rail, simplifying BOM across product variants.
This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes drawn from the Microchip PIC18-Q41 family overview and the verified distributor listings - information not bundled in the manufacturer datasheet alone.
Drop-in alternatives for PIC18F05Q41T-I/ST — 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/ST (same form factor and footprint) — differing in ADC, Package, DAC, PWM, Operating Temperature.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC18F05Q41-E/ST
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$0.72 / Unit
View Datasheet →PIC18F05Q41T-I/SL
✅ Drop-In✓ In Stock
$0.92 / Unit
View Datasheet →PIC18F05Q40T-I/ST
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$1.18 / Unit
View Datasheet →PIC18F05Q40T-I/SL
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$0.74 / Unit
View Datasheet →PIC18F05Q40-I/SL
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$0.78 / Unit
View Datasheet →PIC18F05Q40-E/ST
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$0.98 / Unit
View Datasheet →PIC18F05Q40-E/SL
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$0.74 / Unit
View Datasheet →PIC18F04Q41-E/SL
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$0.79 / Unit
View Datasheet →PIC18F05Q41T-I/ST Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC 8-bit (PIC18 Harvard) |
| Product Family | PIC18-Q41 |
| Maximum CPU Frequency | 64 MHz |
| Program Memory (Flash) | 32 KB (32K x 8) |
| Data SRAM | 2 KB |
| Data EEPROM | 512 bytes |
| Operating Voltage Range | 1.8 V to 5.5 V |
| Operating Temperature Range | -40 °C to +85 °C (Industrial) |
| I/O Pins | 12 |
| ADC | 12-bit ADC2 (with Computation) |
| DAC | 8-bit DAC |
| PWM | 16-bit PWM |
| On-Chip Op-Amp | Yes |
| Serial Interfaces | I2C x1, SPI x2, UART x2 |
| DMA | Yes |
| Peripheral Pin Select (PPS) | Yes |
| Package | 14-TSSOP (ST) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
PIC18F05Q41T-I/ST Pin Configuration
| Pin 1 | RA5 — Digital I/O / analog input / PPS-remappable peripheral |
| Pin 2 | RA4 — Digital I/O / analog input / PPS-remappable peripheral |
| Pin 3 | RA3 — Digital I/O / analog input / MCLR (ICSP) on selected variants |
| Pin 4 | RA2 — Digital I/O / analog input / PPS-remappable peripheral |
| Pin 5 | RA1 — Digital I/O / analog input / ICSPCLK |
| Pin 6 | RA0 — Digital I/O / analog input / ICSPDAT |
| Pin 7 | VSS — Ground reference |
| Pin 8 | RA7 — Digital I/O / analog input / PPS-remappable peripheral |
| Pin 9 | RA6 — Digital I/O / analog input / PPS-remappable peripheral |
| Pin 10 | RC0 — Digital I/O / analog input / PPS-remappable peripheral |
| Pin 11 | RC1 — Digital I/O / analog input / PPS-remappable peripheral |
| Pin 12 | RC2 — Digital I/O / analog input / PPS-remappable peripheral |
| Pin 13 | RC3 — Digital I/O / analog input / PPS-remappable peripheral |
| Pin 14 | VDD — Positive supply input (1.8 V to 5.5 V) |
Typical Applications
PIC18F05Q41T-I/ST is suitable for 6 applications: Sensor Signal Conditioning, LED Lighting Control, Battery-Powered IoT Edge Nodes, Small Motor and Stepper Drive, Industrial Control and Automation, Portable Medical and Wellness Devices.
Sensor Signal Conditioning
The PIC18F05Q41T-I/ST's on-chip operational amplifier, 12-bit ADC2 with Computation, and 8-bit DAC make it a fit for analog sensor front-ends. The internal op-amp can buffer or amplify a sensor signal directly into the ADC without a discrete amplifier, while ADC2's oversampling and averaging features reduce software load. With 32 KB Flash and 2 KB SRAM, firmware can store calibration coefficients and run background sensor fusion.
Recommended
LED Lighting Control
The PIC18F05Q41T-I/ST's 16-bit PWM with configurable dead-time and Core Independent Peripherals enable multi-channel LED dimming and color-mixing without CPU intervention. The DMA engine offloads PWM updates from the CPU, leaving MIPS available for wireless stacks or user-interface tasks. Operating from 1.8 V to 5.5 V, it can run from a single Li-ion cell or a 5 V USB rail in the same design.
Recommended
Battery-Powered IoT Edge Nodes
The PIC18F05Q41T-I/ST's wide 1.8 V to 5.5 V supply range lets it operate directly from a single-cell Li-ion or two AA batteries, while its low-power Run/Idle/Doze modes extend battery life in IoT edge nodes. The Core Independent Peripherals (CIPs) let the MCU wake, sample a sensor via ADC2, transmit over UART, and return to sleep without CPU involvement. PPS remaps serial interfaces to free pins for additional sensors.
Recommended
Small Motor and Stepper Drive
The PIC18F05Q41T-I/ST's 16-bit PWM, configurable dead-time, and CWG (Complementary Waveform Generator) make it suitable for small brushed DC and stepper motor drive stages. The DMA engine and CIPs allow closed-loop current control without taxing the CPU, while the 12-bit ADC2 samples the motor current sense amplifier. The TSSOP-14 footprint fits directly on compact motor-control PCBs.
Recommended
Industrial Control and Automation
The PIC18F05Q41T-I/ST's industrial -40 °C to +85 °C temperature range, dual UART/SPI/I2C, and PPS-driven I/O mapping fit it to industrial control and automation tasks such as PLC sub-modules, sensor hubs, and small process controllers. The DMA and CIPs run deterministic timing loops without CPU intervention, while the 32 KB Flash holds Modbus or proprietary protocols and the 512 B EEPROM stores calibration constants.
Recommended
Portable Medical and Wellness Devices
The PIC18F05Q41T-I/ST's on-chip op-amp front-ends biomedical sensors such as pulse oximetry or ECG leads, while the 12-bit ADC2 digitizes the result for on-chip signal processing. The wide 1.8 V to 5.5 V supply range lets it run from a single coin cell or Li-ion battery, and the small TSSOP-14 footprint fits wrist-worn or handheld enclosures. The CIPs enable low-power duty-cycled measurements that extend battery life.
Recommended
Recommended Products Summary
Engineering reference data for PIC18F05Q41T-I/ST — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC18F05Q41-E/ST | PIC18F05Q41T-I/SL | PIC18F05Q40T-I/ST | PIC18F05Q40T-I/SL | PIC18F05Q40-I/SL | PIC18F05Q40-E/ST | PIC18F05Q40-E/SL | PIC18F04Q41-E/SL |
|---|---|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 14-TSSOP (ST) | 14-TSSOP (ST) - same | 14-SOIC (SL) | 14-TSSOP (ST) - same | 14-SOIC (SL) | 14-SOIC (SL) | 14-TSSOP (ST) - same | 14-SOIC (SL) | 14-SOIC (SL) |
| Program Memory (Flash) | 32 KB | 32 KB | 32 KB | 32 KB | 32 KB | 32 KB | 32 KB | 32 KB | 16 KB (-50%) |
| Data SRAM | 2 KB | 2 KB | 2 KB | 2 KB | 2 KB | 2 KB | 2 KB | 2 KB | 1 KB (-50%) |
| Data EEPROM | 512 B | 512 B | 512 B | 512 B | 512 B | 512 B | 512 B | 512 B | 256 B (-50%) |
| Maximum CPU Frequency | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz |
| On-Chip Op-Amp | Yes | Yes | Yes | No | No | No | No | No | Yes |
| 16-bit PWM | Yes | Yes | Yes | No | No | No | No | No | Yes |
| Operating Temperature Range | -40C to +85C (Industrial) | -40C to +125C (Extended) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +125C (Extended) | -40C to +125C (Extended) | -40C to +125C (Extended) |
Key Differentiators
- On-chip operational amplifier for analog front-ends (vs PIC18F05Q40T-I/ST)
- 16-bit PWM with Core Independent Peripherals (vs PIC18F05Q40T-I/ST)
- Industrial temperature grade in TSSOP-14 (vs PIC18F05Q41T-I/SL)
Design Notes
The PIC18F05Q41T-I/ST operates from 1.8 V to 5.5 V; place a 100 nF decoupling capacitor as close as possible to the VDD pin and a bulk 10 uF tantalum or ceramic capacitor on the same supply rail. Estimated: at 64 MHz with all peripherals active, the core draws roughly 8-12 mA from VDD, so the regulator headroom and trace impedance must support this transient load without sagging the analog references.
Use PPS (Peripheral Pin Select) to remap digital peripherals onto any available I/O; this lets the MCU fit a wide range of PCB layouts without re-routing. Keep analog signal traces short and away from the PWM outputs and switching nodes; route the on-chip op-amp input traces as differential pairs with a ground guard to minimize coupled noise into the ADC2 conversion result.
Do not assume the 'T' suffix in PIC18F05Q41T-I/ST indicates a temperature grade - it actually denotes Tape-and-Reel packaging. The 'I' suffix indicates the industrial -40C to +85C temperature range; the 'E' suffix in PIC18F05Q41-E/ST indicates the extended -40C to +125C grade. Always check both the temperature and packaging suffixes against your BOM requirements before ordering.
Compliance Information
RoHS and lead-free compliance confirmed in the verified Microchip distributor listings. AEC-Q100 qualification is not applicable for this industrial-grade MCU; AEC-Q100 qualified PIC18 variants are typically designated with a 'Q' or automotive suffix.
