PIC18F15Q41-I/REB - 8-Bit MCU, 32KB Flash, 20-VQFN | Microchip
MPN: PIC18F15Q41-I/REB ✓ Hoạt độngPIC18F15Q41-I/REB Tóm tắt
An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data path, integrating a CPU, non-volatile program memory, volatile data memory, peripherals, and I/O on one silicon die. PIC18-family MCUs from Microchip use a Harvard-architecture RISC core with hardware multiplier, offering deterministic instruction timing, low power consumption, and a mature MPLAB X / MCC toolchain. They sit within the broader category of embedded microcontrollers -> microprocessors -> semiconductors -> integrated circuits.
Key differentiating features of the PIC18F15Q41-I/REB include a 12-bit ADC2 with computation, an 8-bit DAC, two on-chip operational amplifiers, a 16-bit PWM, DMA, and Peripheral Pin Select (PPS). The device also integrates two UART, SPI, and I2C peripherals plus a complementary waveform generator (CWG) and numerically controlled oscillator (NCO). These features position the part above general-purpose 8-bit MCUs and adjacent to Microchip's PIC16 family.
Architecturally, the PIC18F15Q41 leverages the enhanced mid-range core with a modified Harvard bus, hardware multiply/divide, and vectored interrupts. The advanced analog peripherals - op-amp + 12-bit ADC2 - reduce the bill of materials in sensor-conditioning circuits, while DMA offloads data movement from the CPU.
Typical applications include IoT sensor nodes, industrial sensing and control loops, LED lighting drivers, medical instrumentation front-ends, and consumer appliances requiring on-chip analog conditioning in a small 3x3 mm VQFN footprint. When designing with this device, ensure the VQFN-20 (3x3) thermal pad is properly soldered to the PCB ground plane for thermal dissipation and electrical reference. The on-chip op-amp output drives only modest loads - buffer externally if heavy sourcing/sinking is required.
Bộ thay thế dễ dàng lắp đặt cho PIC18F15Q41-I/REB — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với PIC18F15Q41-I/REB (cùng hình factor và footprint) — khác nhau ở Package, ADC, DAC, Program Memory (Flash), Operating Temperature.
PIC18F15Q41T-I/REB
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC18F16Q41-I/REB
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC18F14Q41-I/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F05Q41T-I/ST
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F06Q40T-I/ST
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F15Q41-I/REB Tỷ lệ tối đa & tính chất điện
| Core | PIC18 8-bit RISC |
| Program Memory (Flash) | 32 KB |
| Data SRAM | 2 KB |
| EEPROM | 512 bytes |
| Maximum CPU Speed | 64 MHz |
| Operating Voltage Range | 1.8 V to 5.5 V |
| ADC | 12-bit ADC2 with computation |
| DAC | 8-bit DAC |
| Operational Amplifiers | 2 on-chip op-amps |
| PWM | 16-bit PWM |
| DMA | Yes |
| Peripheral Pin Select (PPS) | Yes |
| Communication Interfaces | 2x UART, SPI, I2C |
| Hộp | 20-VQFN (3x3 mm) |
| Kiểu lắp đặt | Surface Mount |
| Nhiệt độ hoạt động | -40C to +85C (Industrial) |
| Trạng thái RoHS | Compliant |
Cấu hình chân PIC18F15Q41-I/REB
| Chân 1 | RA5 — I/O port A bit 5 |
| Chân 2 | RA4 — I/O port A bit 4 |
| Chân 3 | RA3 — I/O port A bit 3 |
| Chân 4 | RA2 — I/O port A bit 2 / DAC output |
| Chân 5 | RA1 — I/O port A bit 1 / OPA1 input |
| Chân 6 | RA0 — I/O port A bit 0 / OPA1 output |
| Chân 7 | VSS — Ground reference |
| Chân 8 | RA7 — I/O port A bit 7 / OPA2 input |
| Chân 9 | RA6 — I/O port A bit 6 / OPA2 output |
| Chân 10 | RC0 — I/O port C bit 0 |
| Chân 11 | RC1 — I/O port C bit 1 |
| Chân 12 | RC2 — I/O port C bit 2 |
| Chân 13 | RC3 — I/O port C bit 3 |
| Chân 14 | RC4 — I/O port C bit 4 |
| Chân 15 | RC5 — I/O port C bit 5 |
| Chân 16 | RC6 — I/O port C bit 6 |
| Chân 17 | RC7 — I/O port C bit 7 |
| Chân 18 | VDD — Positive supply voltage (1.8-5.5 V) |
| Chân 19 | RB7 — I/O port B bit 7 / ICSP data |
| Chân 20 | RB6 — I/O port B bit 6 / ICSP clock |
Ứng dụng tiêu biểu
PIC18F15Q41-I/REB phù hợp cho 6 Áp dụngs: IoT Sensor Nodes, Industrial Sensor Conditioning, LED Lighting Drivers, Medical Instrumentation Front-Ends, Consumer Appliance Control, Automotive Body Electronics (Non-Safety).
IoT Sensor Nodes
The PIC18F15Q41-I/REB fits IoT sensor-node designs because its on-chip op-amps, 12-bit ADC2, and 64 MHz core eliminate most external analog components while staying within a 3x3 mm VQFN footprint. With 32 KB Flash it can run Microchip's 8-bit TCP/IP stack variants, sensor-fusion firmware, or Bluetooth Low Energy beacon controllers via SPI-attached transceivers. Designers place the part on a 4-layer PCB with the thermal pad soldered to ground for thermal dissipation. Compared with discrete op-amp + MCU solutions, the integrated analog chain reduces BOM by 3-5 components and shrinks the analog front-end below 15 mm squared.
Được đề xuất
Industrial Sensor Conditioning
The PIC18F15Q41-I/REB is well suited for industrial 4-20 mA loop transmitters, bridge-sensor readouts, and process-control front-ends where on-chip op-amps directly condition strain-gauge or thermocouple signals. The 12-bit ADC2 with computation performs hardware-averaged conversions, offloading the CPU. UART/SPI interfaces connect to industrial transceivers or HMI displays. The 1.8-5.5 V supply range accommodates both 24 V-loop-derived and 3.3 V-rail instrumentation. Operating temperature of -40C to +85C (industrial grade) covers factory-floor environments.
Được đề xuất
LED Lighting Drivers
The PIC18F15Q41-I/REB drives LED lighting applications via its 16-bit PWM, complementary waveform generator, and on-chip op-amps for current-sense amplification. It supports dimming protocols including 0-10 V analog, DALI via UART, and DMX via UART at up to 250 kbaud. With DMA, the PWM duty-cycle registers update without CPU intervention, enabling smooth color-mixing transitions across multiple LED channels. The 3x3 mm VQFN outline fits inside MR16-form-factor luminaires where board area is severely constrained.
Được đề xuất
Medical Instrumentation Front-Ends
The PIC18F15Q41-I/REB serves medical front-ends such as pulse-oximeter sensors, glucose-meter analog chains, and handheld diagnostic probes. The 12-bit ADC2 plus op-amps measure photodiode currents in pulse-oximetry or potentiostat currents in electrochemical sensors. The 8-bit DAC provides bias or stimulation waveforms. With deterministic 16 MIPS throughput, the part executes filter and demodulation routines within real-time budgets required by Class A and Class B medical equipment. Compact VQFN-20 packaging enables wearable form factors.
Được đề xuất
Consumer Appliance Control
The PIC18F15Q41-I/REB powers small consumer appliances - coffee machines, hair dryers, air purifiers - by combining capacitive-touch sensing via PPS-mapped peripherals, PWM motor control, and UART/I2C connectivity. The PPS feature routes UART, SPI, and PWM signals to almost any I/O pin, simplifying PCB layout for capacitive-sensor PCBs. On-chip op-amps condition thermistor inputs for over-temperature protection. Low-cost pricing around USD 0.92 at qty 1000 makes it suitable for cost-sensitive consumer SKUs as of 2026-09-26.
Được đề xuất
Automotive Body Electronics (Non-Safety)
The PIC18F15Q41-I/REB targets non-safety automotive body modules such as ambient lighting, seat-position controllers, and HVAC damper drivers. While the -I (industrial) grade suits cabin environments, the AEC-Q100-qualified Q41 variants address stricter module requirements. The 16-bit PWM drives small brushed-DC and stepper motors for seat positioning, while UART/LIN transceivers attach for body-network communication. On-chip op-amps amplify seat-occupancy sensor signals, reducing external analog IC count.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC18F15Q41-I/REB — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | PIC18F15Q41T-I/REB | PIC18F16Q41-I/REB | PIC18F14Q41-I/SO |
|---|---|---|---|---|
| Package | 20-VQFN (3x3 mm) | 20-VQFN (3x3) - same | 20-VQFN (3x3) - same | 20-SOIC - same family, different package |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 32 KB | 32 KB | Up to 64 KB | 16 KB |
| SRAM | 2 KB | 2 KB | 2-4 KB | 1 KB |
| EEPROM | 512 bytes | 512 bytes | 512 bytes | 256 bytes |
| Maximum CPU Speed | 64 MHz | 64 MHz | 64 MHz | 64 MHz |
| On-Chip Op-Amps | 2 | 2 | 2 | 2 |
| ADC Resolution | 12-bit | 12-bit | 12-bit | 12-bit |
| DAC | 8-bit | 8-bit | 8-bit | 8-bit |
| PWM | 16-bit | 16-bit | 16-bit | 16-bit |
Bảo phân biệt quan trọng
- Higher Flash density within same Q41 family (vsPIC18F14Q41-I/SO)
- Smaller 3x3 mm VQFN package for miniaturized designs (vsPIC18F14Q41-I/SO)
- Modern Q41 peripherals vs older Q40 generation (vsPIC18F06Q40T-I/ST)
Ghi chú thiết kế
The 20-VQFN (3x3 mm) package has an exposed thermal pad that MUST be soldered to a PCB ground plane for proper thermal dissipation and electrical reference. Use an array of thermal vias (8-12 vias of 0.3 mm drill) under the pad to conduct heat to internal ground planes. Without proper soldering, junction temperature can rise by 20-30 C above ambient during normal operation, degrading reliability. Per Microchip packaging guidelines, the pad should occupy at least 80% of the package footprint.
Place a 100 nF decoupling capacitor as close as possible to the VDD pin (pin 18) and a bulk 10 uF tantalum or ceramic capacitor on the same supply trace within 10 mm. The PIC18F15Q41 has multiple power domains; if using the ADC2 at high sampling rates, add a separate analog supply filter (10 ohm + 100 nF) to the AVdd rail. Estimated decoupling effectiveness assumes a 4-layer PCB with a dedicated ground plane.
When routing high-speed SPI signals (above 10 MHz) or PWM outputs at 100 kHz+, keep traces short (<25 mm) and maintain 50 ohm characteristic impedance using a 4-layer stackup. The PPS (Peripheral Pin Select) feature allows remapping peripherals to almost any I/O, but grouping PPS-mapped signals away from analog inputs reduces crosstalk into the ADC2. Keep digital traces at least 5 mm away from analog signal traces, or use a guard ground trace between them.
Do not exceed 5.5 V on any I/O pin; even momentary over-voltage events during hot-plug can damage the ESD cells. Ensure the ICSP programming pins (RB6/RB7) are not pulled low at reset, or programming will fail. The on-chip op-amps have limited output drive (around 5 mA) - buffer externally with a discrete op-amp if driving low-impedance loads below 1 kohm. The internal 8 MHz HFINTOSC drift is +/- 2% across temperature - use the PLL with an external crystal for UART timing accuracy.
Thông tin tuân thủ
Industrial-grade (-I) suffix denotes -40C to +85C operating temperature. AEC-Q100 qualification applies to automotive variants of the Q41 family, not the standard industrial grade. RoHS and REACH compliance confirmed by Microchip product page.
