PIC18F46Q43-I/PT - 8-bit 64MHz 64KB Flash MCU | Microchip
MPN: PIC18F46Q43-I/PT ✓ Hoạt độngPIC18F46Q43-I/PT Tóm tắt
A microcontroller (MCU) is an integrated circuit that combines a CPU, memory (Flash/RAM/EEPROM), and programmable peripherals on a single die. The PIC18 family uses a modified Harvard 8-bit RISC architecture with a 16-bit instruction word, providing deterministic interrupt latency and byte-level arithmetic. PIC18-Q43 devices extend this legacy with Peripheral Pin Select (PPS), allowing digital peripherals to be remapped to almost any I/O pin, simplifying PCB routing in mixed-signal designs.
Key features of the PIC18F46Q43 include eXtreme Low Power (XLP) technology with deep-sleep currents in the nanoampere range, an on-chip 32 kHz low-power oscillator for RTC operation, up to 36 I/O pins, multiple communication interfaces (UART, SPI, I2C), a 12-bit differential ADCC with hardware accumulators, and Functional Safety (FuSa) support including CRC/SCAN and windowed watchdog for IEC 60730 class B compliance.
The architecture supports up to 16 MIPS operation at 64 MHz, with single-cycle hardware multiply, table reads/writes to Flash in the application image, and a hardware interrupt controller that prioritizes CIP events without CPU intervention. The DMA controller allows data movement between peripherals and memory without waking the core, dramatically reducing power consumption in always-on sensor applications.
Typical applications include capacitive touch sensing (buttons, sliders, proximity), BLDC and stepper motor control using the 16-bit PWMs, LED lighting drivers, IoT sensor nodes with battery operation, industrial control loops (PID implemented in CLCs and PWMs), and functional-safety appliances requiring IEC 60730 class B certification.
When designing with this device, allocate the PPS mapping early in the schematic phase and use the MPLAB Code Configurator (MCC) plug-in to generate peripheral initialization. The 44-pin TQFP gives ample GPIO for mid-complexity designs, but verify Vcap decoupling and VDDCORE rail sequencing during bring-up to avoid POR instability.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, helping engineers select the right PIC18-Q43 variant for their real-time control design.
Bộ thay thế dễ dàng lắp đặt cho PIC18F46Q43-I/PT — 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 PIC18F46Q43-I/PT (cùng hình factor và footprint) — khác nhau ở ADC, DMA Channels, Program Memory (Flash), DAC, Operating Temperature Range.
Không có bộ thay thế dễ dàng lắp đặt sẵn có cho sản phẩm này.
Yêu cầu các bộ thay thếPIC18F46Q43-I/PT Tỷ lệ tối đa & tính chất điện
| Core | PIC18 (8-bit RISC, 16-bit instruction word) |
| Program Memory (Flash) | 64 KB (64K x 8) |
| RAM | 4 KB |
| Maximum CPU Frequency | 64 MHz |
| Hộp | 44-pin TQFP (10x10 mm) |
| Kiểu lắp đặt | Surface Mount |
| Number of I/O Pins | Up to 36 |
| ADC | 12-bit ADCC with Computation (multiple channels) |
| PWM Channels | 3x 16-bit PWMs |
| DMA Channels | 6 channels |
| DAC | 8-bit DAC |
| Low-Power Technology | XLP (eXtreme Low Power) |
| Khoảng nhiệt độ hoạt động | -40C to +85C (Industrial, 'I' suffix) |
| Functional Safety | FuSa features (CRC, SCAN, WWDT) - IEC 60730 Class B capable |
| Peripheral Pin Select (PPS) | Yes |
| Trạng thái RoHS | Compliant |
Cấu hình chân PIC18F46Q43-I/PT
| Chân 1 | VDDCORE — Regulated core supply output (cap to VSS) |
| Chân 2 | RA7 — I/O port A bit 7 / PPS-mappable |
| Chân 3 | RA6 — I/O port A bit 6 / PPS-mappable |
| Chân 4 | RA5 — I/O port A bit 5 / PPS-mappable |
| Chân 5 | RA4 — I/O port A bit 4 / PPS-mappable |
| Chân 6 | RA3 — I/O port A bit 3 / PPS-mappable |
| Chân 7 | RA2 — I/O port A bit 2 / PPS-mappable |
| Chân 8 | RA1 — I/O port A bit 1 / PPS-mappable |
| Chân 9 | RA0 — I/O port A bit 0 / PPS-mappable |
| Chân 10 | VSS — Ground reference |
| Chân 11 | VDD — Main supply input (1.8V-5.5V typical) |
| Chân 12 | RB7 — I/O port B bit 7 / PPS-mappable |
| Chân 13 | RB6 — I/O port B bit 6 / PPS-mappable |
| Chân 14 | RB5 — I/O port B bit 5 / PPS-mappable |
| Chân 15 | RB4 — I/O port B bit 4 / PPS-mappable |
| Chân 16 | RB3 — I/O port B bit 3 / PPS-mappable |
| Chân 17 | RB2 — I/O port B bit 2 / PPS-mappable |
| Chân 18 | RB1 — I/O port B bit 1 / PPS-mappable |
| Chân 19 | RB0 — I/O port B bit 0 / PPS-mappable |
| Chân 20 | VSS — Ground reference |
| Chân 21 | VDD — Main supply input |
| Chân 22 | RC7 — I/O port C bit 7 / PPS-mappable |
| Chân 23 | RC6 — I/O port C bit 6 / PPS-mappable |
| Chân 24 | RC5 — I/O port C bit 5 / PPS-mappable |
| Chân 25 | RC4 — I/O port C bit 4 / PPS-mappable |
| Chân 26 | RC3 — I/O port C bit 3 / PPS-mappable |
| Chân 27 | RC2 — I/O port C bit 2 / PPS-mappable |
| Chân 28 | RC1 — I/O port C bit 1 / PPS-mappable |
| Chân 29 | RC0 — I/O port C bit 0 / PPS-mappable |
| Chân 30 | OSC1 — Crystal/clock input |
| Chân 31 | OSC2 — Crystal/clock output |
| Chân 32 | VSS — Ground reference |
| Chân 33 | RD7 — I/O port D bit 7 / PPS-mappable |
| Chân 34 | RD6 — I/O port D bit 6 / PPS-mappable |
| Chân 35 | RD5 — I/O port D bit 5 / PPS-mappable |
| Chân 36 | RD4 — I/O port D bit 4 / PPS-mappable |
| Chân 37 | RD3 — I/O port D bit 3 / PPS-mappable |
| Chân 38 | RD2 — I/O port D bit 2 / PPS-mappable |
| Chân 39 | RD1 — I/O port D bit 1 / PPS-mappable |
| Chân 40 | RD0 — I/O port D bit 0 / PPS-mappable |
| Chân 41 | VSS — Ground reference |
| Chân 42 | VDD — Main supply input |
| Chân 43 | MCLR — Master clear / reset input (active low) |
| Chân 44 | RE3 — I/O port E bit 3 / PPS-mappable |
Ứng dụng tiêu biểu
PIC18F46Q43-I/PT phù hợp cho 6 Áp dụngs: Capacitive Touch HMI, BLDC Motor Control, Industrial Sensor Node, Smart LED Lighting, Household Appliance Control, IoT Sensor Edge Node.
Capacitive Touch HMI
The PIC18F46Q43-I/PT is purpose-built for capacitive touch human-machine interfaces, integrating a 12-bit ADCC with Capacitive Voltage Divider (CVD) hardware that automates button, slider, and proximity sensing. The ADCC supports oversampling and hardware averaging to suppress environmental noise from LCD or fluorescent lighting, while the 6-channel DMA scans multiple touch electrodes without CPU load. The 64 KB Flash stores touch libraries and gesture recognition firmware, and the XLP nanoampere sleep current enables battery-powered remote controls with years of standby life.
Được đề xuất
BLDC Motor Control
For sensorless or sensored BLDC motor control, the PIC18F46Q43-I/PT delivers three independent 16-bit PWMs with complementary outputs and dead-band control, ideal for 3-phase inverter drives. The 12-bit ADCC samples back-EMF for sensorless commutation with hardware oversampling, while DMA shuttles ADC samples to memory without CPU intervention. Configurable Logic Cells (CLCs) implement hardware fault protection that latches PWM outputs within nanoseconds of an overcurrent event, satisfying functional-safety requirements for appliance motor drives.
Được đề xuất
Industrial Sensor Node
In industrial 4-20 mA loop-powered or battery sensor nodes, the PIC18F46Q43-I/PT combines XLP low-power operation with the 12-bit ADCC for accurate transducer readout. The 64 KB Flash stores Modbus RTU or IO-Link stack firmware, while the three UART/SPI/I2C peripherals interface to external sensors and isolated transceivers. With sub-100 nA deep-sleep retention, the Q43 enables multi-year battery life for wireless or wire-connected remote sensing in factory automation.
Được đề xuất
Smart LED Lighting
The PIC18F46Q43-I/PT drives multi-channel LED strings in commercial and architectural lighting fixtures. The 16-bit PWMs provide smooth dimming down to 0.1% without flicker, while the 8-bit DAC generates reference voltages for constant-current LED drivers. DMA streams color-mixing data from Flash to PWM duty registers for animated effects, freeing the CPU for wireless (BLE) command handling via UART. XLP operation supports standby power below 100 mW for ENERGY STAR compliance.
Được đề xuất
Household Appliance Control
The PIC18F46Q43-I/PT is a drop-in fit for IEC 60730 Class B functional-safety appliances such as washing machines, ovens, and dishwashers. Built-in CRC memory integrity, a windowed watchdog timer, and Fail-Safe Clock Monitor provide the diagnostic coverage required by the standard without an external safety MCU. The ADCC reads NTC thermistors and level sensors, while PWMs control triac-fired heater elements and pump motors, all coordinated through CLC hardware for sub-microsecond fault response.
Được đề xuất
IoT Sensor Edge Node
In battery-powered IoT edge nodes, the PIC18F46Q43-I/PT serves as the on-device event processor between sensors and a wireless module. The 12-bit ADCC oversamples sensor data while DMA moves results to RAM, allowing the core to sleep until a threshold-crossing event wakes it via the ADCC interrupt. UART/SPI interfaces communicate with sub-GHz or BLE modules, and 64 KB Flash holds edge-AI inference routines or sensor fusion algorithms. XLP technology delivers years of life from a CR2032 coin cell.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC18F46Q43-I/PT — 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 | PIC18F46Q43-I/PT |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Package | TQFP-44 (10x10 mm) | TQFP-44 (10x10 mm) |
| Core | PIC18 (8-bit, 16-bit instruction word) | PIC18 (8-bit) |
| Flash | 64 KB | 64 KB |
| RAM | 4 KB | 4 KB |
| Max CPU Frequency | 64 MHz (16 MIPS) | 64 MHz (16 MIPS) |
| ADC | 12-bit ADCC with Computation | 12-bit ADCC |
| PWM | 3x 16-bit | 3x 16-bit |
| DMA | 6 channels | 6 channels |
| Functional Safety | IEC 60730 Class B capable (FuSa) | Yes |
Bảo phân biệt quan trọng
- 12-bit ADCC with Computation and oversampling (vsPIC18F46K22 (10-bit ADC))
- 16-bit PWM with center-aligned mode (vsPIC18F46K22 (10-bit PWM, CCP-based))
- 6-channel DMA engine (vsPIC18F46Q10 (no DMA))
- Built-in IEC 60730 Class B Functional Safety (vsPIC18F46K42 (no FuSa block))
Ghi chú thiết kế
Estimated: at VDD=5V, CPU active at 64 MHz with all peripherals enabled, the PIC18F46Q43-I/PT typical active current is in the single-digit mA range per Microchip datasheet typical characteristics. Decouple VDD/VSS pairs with 100 nF X7R ceramic capacitors placed within 3 mm of each supply pin. The VDDCORE pin requires an external 1 uF-10 uF low-ESR capacitor; without proper decoupling the internal regulator may oscillate and trigger unexpected BOR events during PWM switching transients.
Place the 44-pin TQFP crystal load capacitors within 5 mm of OSC1/OSC2, and route clock traces with a guard ring tied to ground. When using the internal HFINTOSC, ensure the OSC2 pin is configured as a digital I/O via PPS to free a pin for the application. For high-speed ADC measurements, route analog signals away from PWM traces and use a separate analog ground island connected to VSS at a single point near the MCU.
The MCLR pin must be pulled high through a 10 kohm resistor; floating MCLR causes random resets under noise. When migrating code from PIC18F46K22 to PIC18F46Q43, the register names for PPS differ (e.g., CCP1PPS vs PSTR1CON); use the MCC generated headers to avoid lockup. The I2C peripheral on Q43 supports SMBus levels but requires external pull-ups; do not rely on the internal weak pull-ups for 400 kHz Fast Mode operation.
The 12-bit ADCC achieves best SNR with a 1 kHz or lower conversion rate; at higher rates, total harmonic distortion rises due to internal capacitor settling. Place a 10 nF NPO bypass capacitor on the analog input pin when sampling high-impedance sensors, and average 16 or more samples in hardware via the ADCC Accumulator for 14-bit effective resolution. Avoid switching adjacent digital I/O during ADC sampling to minimize crosstalk.
Thông tin tuân thủ
RoHS and REACH compliant per Microchip product page; halogen-free TQFP-44 package; Functional Safety (IEC 60730 Class B) capable but not AEC-Q100 qualified for automotive.