PIC18F46Q43-I/PT - 8-bit 64MHz 64KB Flash MCU | Microchip
N.º de pieza: PIC18F46Q43-I/PT ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $2.21 | $2,21 |
| 10 | $2.05 | $20,50 |
| 100 | $1.78 | $178,00 |
| 500 | $1.55 | $775,00 |
| 1.000 | $1.38 | $1.380,00 |
| 3.000 | $1.22 | $3.660,00 |
PIC18F46Q43-I/PT Descripción general
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.
Alternativas directas para PIC18F46Q43-I/PT — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con PIC18F46Q43-I/PT (mismo factor de forma y huella) — difiere en ADC, DMA Channels, Program Memory (Flash), DAC, Operating Temperature Range.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
No hay alternativas directas disponibles para este producto.
Solicitar alternativasPIC18F46Q43-I/PT Valores máximos y características eléctricas
| 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 |
| Encapsulado | 44-pin TQFP (10x10 mm) |
| Tipo de montaje | 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) |
| Rango de temperatura de funcionamiento | -40C to +85C (Industrial, 'I' suffix) |
| Functional Safety | FuSa features (CRC, SCAN, WWDT) - IEC 60730 Class B capable |
| Peripheral Pin Select (PPS) | Yes |
| Estado RoHS | Compliant |
Configuración de pines de PIC18F46Q43-I/PT
| Pin 1 | VDDCORE — Regulated core supply output (cap to VSS) |
| Pin 2 | RA7 — I/O port A bit 7 / PPS-mappable |
| Pin 3 | RA6 — I/O port A bit 6 / PPS-mappable |
| Pin 4 | RA5 — I/O port A bit 5 / PPS-mappable |
| Pin 5 | RA4 — I/O port A bit 4 / PPS-mappable |
| Pin 6 | RA3 — I/O port A bit 3 / PPS-mappable |
| Pin 7 | RA2 — I/O port A bit 2 / PPS-mappable |
| Pin 8 | RA1 — I/O port A bit 1 / PPS-mappable |
| Pin 9 | RA0 — I/O port A bit 0 / PPS-mappable |
| Pin 10 | VSS — Ground reference |
| Pin 11 | VDD — Main supply input (1.8V-5.5V typical) |
| Pin 12 | RB7 — I/O port B bit 7 / PPS-mappable |
| Pin 13 | RB6 — I/O port B bit 6 / PPS-mappable |
| Pin 14 | RB5 — I/O port B bit 5 / PPS-mappable |
| Pin 15 | RB4 — I/O port B bit 4 / PPS-mappable |
| Pin 16 | RB3 — I/O port B bit 3 / PPS-mappable |
| Pin 17 | RB2 — I/O port B bit 2 / PPS-mappable |
| Pin 18 | RB1 — I/O port B bit 1 / PPS-mappable |
| Pin 19 | RB0 — I/O port B bit 0 / PPS-mappable |
| Pin 20 | VSS — Ground reference |
| Pin 21 | VDD — Main supply input |
| Pin 22 | RC7 — I/O port C bit 7 / PPS-mappable |
| Pin 23 | RC6 — I/O port C bit 6 / PPS-mappable |
| Pin 24 | RC5 — I/O port C bit 5 / PPS-mappable |
| Pin 25 | RC4 — I/O port C bit 4 / PPS-mappable |
| Pin 26 | RC3 — I/O port C bit 3 / PPS-mappable |
| Pin 27 | RC2 — I/O port C bit 2 / PPS-mappable |
| Pin 28 | RC1 — I/O port C bit 1 / PPS-mappable |
| Pin 29 | RC0 — I/O port C bit 0 / PPS-mappable |
| Pin 30 | OSC1 — Crystal/clock input |
| Pin 31 | OSC2 — Crystal/clock output |
| Pin 32 | VSS — Ground reference |
| Pin 33 | RD7 — I/O port D bit 7 / PPS-mappable |
| Pin 34 | RD6 — I/O port D bit 6 / PPS-mappable |
| Pin 35 | RD5 — I/O port D bit 5 / PPS-mappable |
| Pin 36 | RD4 — I/O port D bit 4 / PPS-mappable |
| Pin 37 | RD3 — I/O port D bit 3 / PPS-mappable |
| Pin 38 | RD2 — I/O port D bit 2 / PPS-mappable |
| Pin 39 | RD1 — I/O port D bit 1 / PPS-mappable |
| Pin 40 | RD0 — I/O port D bit 0 / PPS-mappable |
| Pin 41 | VSS — Ground reference |
| Pin 42 | VDD — Main supply input |
| Pin 43 | MCLR — Master clear / reset input (active low) |
| Pin 44 | RE3 — I/O port E bit 3 / PPS-mappable |
Aplicaciones típicas
PIC18F46Q43-I/PT es adecuado para 6 aplicacións: 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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para PIC18F46Q43-I/PT — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | 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 |
Diferenciadores clave
- 12-bit ADCC with Computation and oversampling (frente a PIC18F46K22 (10-bit ADC))
- 16-bit PWM with center-aligned mode (frente a PIC18F46K22 (10-bit PWM, CCP-based))
- 6-channel DMA engine (frente a PIC18F46Q10 (no DMA))
- Built-in IEC 60730 Class B Functional Safety (frente a PIC18F46K42 (no FuSa block))
Notas de diseño
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.
Información de cumplimiento
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.