PIC18F14Q41-E/REB - 8-bit 64MHz MCU, 16KB Flash, 20-VQFN | Microchip
MPN: PIC18F14Q41-E/REB ✓ Hoạt độngPIC18F14Q41-E/REB Tóm tắt
What is an 8-bit PIC microcontroller? An 8-bit MCU is a microprocessor core with an 8-bit data path, FLASH program memory, on-chip RAM and a peripheral set tuned for deterministic, low-latency control. PIC18 devices add a 16-bit instruction word, hardware multiplier and prioritized interrupts while retaining the small footprint and low power consumption of the PIC family, sitting within the hierarchy: 8-bit MCU -> microcontroller -> embedded processor -> semiconductor.
Key features include an on-chip operational amplifier (OPA), a 12-bit ADC with Computation (ADCC) for automated averaging, threshold compare and oversampling, an 8-bit DAC, two 8-bit timers, one 16-bit timer/PWM, DMA, and Peripheral Pin Select (PPS) for flexible signal routing. The device also integrates a configurable logic cell, complementary waveform generator (CWG), numerically controlled oscillator (NCO) and zero-cross detect, supporting fan/motor and lighting applications.
The architecture pairs the enhanced mid-range PIC18 core with Core Independent Peripherals (CIPs), allowing ADCC, PWM, DMA and CWG to operate without CPU intervention. PPS remaps digital I/O to most pins, simplifying PCB routing in dense 3x3 mm layouts, and the 64 MHz internal oscillator eliminates the need for an external crystal in cost-sensitive designs.
Typical applications are LED lighting drivers, sensor signal-conditioning front-ends, small appliance controls, fan/blower motor control, and IoT edge-node acquisition. Industrial-grade -40C to +125C operation supports factory and automotive sub-system environments.
Designers should bias unused pins to defined states and follow Microchip AN2602 guidelines for VQFN-20 land pattern and thermal via arrays. The on-chip OPA and 12-bit ADCC combination typically eliminates one external op-amp, reducing BOM and PCB area by approximately 10-20% versus discrete analog front-ends.
This page synthesizes distributor pricing, drop-in alternatives, application notes, and practical design notes that go beyond the manufacturer datasheet to help engineers select and qualify the part faster.
Bộ thay thế dễ dàng lắp đặt cho PIC18F14Q41-E/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 PIC18F14Q41-E/REB (cùng hình factor và footprint) — khác nhau ở ADC, DAC, Package, Program Memory (Flash), Core Architecture.
PIC18F14Q41-I/REB
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC18F14Q40-I/REB
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F14Q41-E/REB
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F04Q41-E/SL
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F05Q41T-I/ST
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F14Q41-E/REB Tỷ lệ tối đa & tính chất điện
| Core Architecture | PIC18 (8-bit enhanced mid-range) |
| Maximum CPU Frequency | 64 MHz |
| Program Memory (Flash) | 16 KB |
| Data Memory (SRAM) | 1 KB |
| EEPROM | 512 bytes |
| ADC | 12-bit ADCC (with Computation) |
| DAC | 8-bit |
| On-chip Op-Amp | Yes (1x OPA) |
| Timers | 2x 8-bit, 1x 16-bit |
| PWM Channels | 16-bit PWM |
| DMA | Yes |
| Peripheral Pin Select (PPS) | Yes |
| Communication | UART, SPI, I2C |
| Hộp | 20-pin VQFN (3x3 mm) with exposed pad |
| Nhiệt độ hoạt động | -40C to +125C (E = Extended) |
| Trạng thái RoHS | Compliant |
Cấu hình chân PIC18F14Q41-E/REB
| Chân 1 | RA2/AN2/OPA1IN+ — GPIO / analog input / op-amp non-inverting input |
| Chân 2 | RA3/AN3/OPA1IN- — GPIO / analog input / op-amp inverting input |
| Chân 3 | RA4/AN4/OPA1OUT — GPIO / analog input / op-amp output |
| Chân 4 | RA5/MCLR — GPIO / master clear reset (active low) |
| Chân 5 | VSS — Ground reference |
| Chân 6 | RA0/AN0/DAC1OUT — GPIO / analog input / DAC output |
| Chân 7 | RA1/AN1 — GPIO / analog input |
| Chân 8 | VSS — Ground reference |
| Chân 9 | RA7/OSC1/CLKIN — GPIO / crystal oscillator input / external clock |
| Chân 10 | RA6/OSC2/CLKOUT — GPIO / crystal oscillator output / clock out |
| Chân 11 | RC5/PPS — GPIO / PPS-routed peripheral |
| Chân 12 | RC4/PPS — GPIO / PPS-routed peripheral |
| Chân 13 | RC3/PPS — GPIO / PPS-routed peripheral |
| Chân 14 | RC2/PPS — GPIO / PPS-routed peripheral |
| Chân 15 | RC1/PPS — GPIO / PPS-routed peripheral |
| Chân 16 | RC0/PPS — GPIO / PPS-routed peripheral |
| Chân 17 | RB7/ICSPDAT — GPIO / ICSP data |
| Chân 18 | RB6/ICSPCLK — GPIO / ICSP clock |
| Chân 19 | VDD — Positive supply voltage |
| Chân 20 | EP — Exposed thermal pad - tie to VSS |
Ứng dụng tiêu biểu
PIC18F14Q41-E/REB phù hợp cho 6 Áp dụngs: LED Lighting Drivers, Sensor Signal Conditioning, Small Appliance Control, Fan and Blower Motor Control, IoT Edge-Node Acquisition, Automotive Sub-System Control.
LED Lighting Drivers
The PIC18F14Q41-E/REB is well-suited for LED lighting drivers because its 16-bit PWM with complementary outputs, CWG (Complementary Waveform Generator), and 12-bit ADCC enable precise dimming and current regulation. The on-chip OPA can be configured as a transimpedance amplifier for photodiode feedback, closing a constant-luminance loop without external analog ICs. In a typical 24V LED strip driver, the MCU runs at 64 MHz for fast PWM switching while the ADCC samples current at the same rate, achieving better than 1% dimming linearity from 0.1% to 100% duty cycle.
Được đề xuất
Sensor Signal Conditioning
For sensor signal-conditioning front-ends, the PIC18F14Q41-E/REB's on-chip OPA plus 12-bit ADCC delivers a complete analog front-end in a single 3x3 mm package. The OPA can be configured as a non-inverting amplifier, in-amp or transimpedance stage, while ADCC handles oversampling and averaging to push ENOB above 13 bits. This combo typically replaces one external op-amp IC plus a discrete ADC, reducing BOM cost by $0.20-$0.40 and saving approximately 10-15 mm^2 of PCB area in strain-gauge or thermocouple conditioning designs.
Được đề xuất
Small Appliance Control
The PIC18F14Q41-E/REB fits small appliance controllers such as coffee makers, blenders, and kitchen hoods, where it must read user inputs, drive a TRIAC or MOSFET, and manage safety timings. Its 16-bit PWM with dead-band control plus CWG generates anti-flicker AC phase-cut waveforms, while PPS routes UART to the display module and I2C to the temperature sensor without remapping the PCB. The -40C to +125C extended operating range supports over-range conditions near heating elements without thermal derating.
Được đề xuất
Fan and Blower Motor Control
For closed-loop fan and blower control, the PIC18F14Q41-E/REB uses its 16-bit PWM, CWG, and zero-cross detect to drive BLDC or brushed DC motors with back-EMF sensing. The DMA engine offloads tachometer capture from the CPU, freeing cycles for the speed control loop to update at 32 kHz. Compared to a discrete analog control loop, this digital approach improves efficiency by 3-5% and enables soft-start curves over 2-5 seconds without external timing components.
Được đề xuất
IoT Edge-Node Acquisition
The PIC18F14Q41-E/REB serves as the acquisition MCU in IoT edge nodes where it pre-processes sensor data before handing off to a wireless co-processor over UART/SPI/I2C. The 12-bit ADCC and on-chip OPA digitize and condition signals while the DMA moves samples to SRAM without CPU wake, drawing less than 5 mA active and under 1 uA in sleep. With PPS, the same firmware image runs on the 20-VQFN or larger 20-SOIC variant of the family, simplifying inventory across product tiers.
Được đề xuất
Automotive Sub-System Control
Although the PIC18F14Q41-E/REB itself is industrial-grade, it is widely used in non-safety automotive sub-systems such as interior lighting, HVAC trim and accessory controllers where AEC-Q100 is not mandated. The extended -40C to +125C temperature range handles under-dash thermal stress, while the 12-bit ADCC reads potentiometers and NTC thermistors with better than 0.5% accuracy. For designs that later migrate to AEC-Q100, the Microchip PIC18F14Q41-E/REB firmware is code-compatible with the automotive-grade PIC18F16Q41-Q1.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC18F14Q41-E/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 | PIC18F14Q41-I/REB | PIC18F14Q40-I/REB | PIC18F04Q41-E/SL |
|---|---|---|---|---|
| Package | 20-VQFN (3x3 mm) | 20-VQFN (3x3 mm) - same | 20-VQFN (3x3 mm) - same | 20-VQFN (3x3 mm) family - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core / Max Frequency | PIC18 / 64 MHz | PIC18 / 64 MHz - same | PIC18 / 64 MHz - same | PIC18 / 64 MHz - same |
| Flash / SRAM / EEPROM | 16 KB / 1 KB / 512 B | 16 KB / 1 KB / 512 B - same | 16 KB / 1 KB / 512 B - same | 8 KB / 1 KB / 512 B -50% Flash |
| ADC Resolution | 12-bit ADCC | 12-bit ADCC - same | 10-bit ADC (lower) | 12-bit ADCC - same |
| On-chip OPA / DAC | Yes / 8-bit DAC | Yes / 8-bit DAC - same | Yes / 8-bit DAC - same | Yes / 8-bit DAC - same |
| Operating Temperature | -40C to +125C (E) | -40C to +85C (I) | -40C to +85C (I) | -40C to +125C (E) |
| DMA / PPS | Yes / Yes | Yes / Yes - same | Yes / Yes - same | Yes / Yes - same |
| Unit Price (qty 100) | $1.18 | $1.12 approx | $1.05 approx | $1.00 approx |
Bảo phân biệt quan trọng
- On-chip OPA eliminates external op-amp in signal-chain designs (vsPIC18F14K50)
- DMA engine offloads peripheral-to-memory transfers (vsPIC18F14Q40-I/REB)
- Compact 3x3 mm VQFN with full peripheral integration (vsPIC18F13K22)
Ghi chú thiết kế
The exposed thermal pad (EP) of the 20-VQFN must be soldered to the PCB ground plane to dissipate up to 500 mW of internal power and to provide the lowest-impedance ground return. Per Microchip AN2602, place a 3x3 grid of 0.3 mm thermal vias under the pad and stitch the inner layers with copper pours. Skipping the EP solder connection can raise junction temperature by 20-30C above rated, triggering thermal-shutdown events at full 64 MHz operation.
Place a 100 nF decoupling capacitor within 2 mm of the VDD pin and a bulk 10 uF ceramic on the same node for ADC reference stability. Keep analog traces (AN0-AN4, OPA1IN+, OPA1IN-, OPA1OUT) routed on a single layer with a solid ground pour to minimize crosstalk; do not cross digital switching lines over the analog area. The ADCC reference can be selected as VDD or external, but for 12-bit ENOB above 11 bits, use an external MCP1501 reference tied to a quiet analog VDD node.
Always configure unused pins as outputs low or inputs with internal weak pull-ups - floating inputs on CMOS logic draw 10-100 uA each and may cause spurious interrupt wakeups. The MCLR pin (RA5) is enabled by default; if unused, tie to VDD through a 10 kohm resistor and a 100 nF capacitor, or disable the MCLR function in CONFIG3 to free RA5 as a regular GPIO. Do not exceed 3.6V on any pin - the Q41 family is not 5V tolerant.
Thông tin tuân thủ
RoHS and REACH compliant per Microchip product page. Not AEC-Q100 qualified - the automotive-grade equivalent is the PIC18F16Q41-Q1 in the same family. Lead-free and halogen-free per Microchip environmental compliance documentation.
