PIC18F43K22 - Microcontroller Microchip - Free user manual and instructions
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| Type of product | Microcontroller |
| Brand | Microchip Technology |
| Model | PIC18F43K22 |
| Family | PIC18F (8-bit) |
| Package type | 28-pin DIP, SOIC, SSOP |
| Core architecture | 8-bit RISC |
| Clock speed | Up to 20 MHz (64 MHz with PLL) |
| Operating voltage | 1.8V – 5.5V |
| Program memory | 8 KB Flash |
| Data memory (RAM) | 768 bytes |
| EEPROM memory | 256 bytes |
| Digital I/O pins | 25 |
| Analog input channels | 15 (10-bit ADC) |
| Timers | 4 (8/16-bit) |
| Communication interfaces | SPI, I2C, USART |
| PWM channels | 5 (with Capture/Compare) |
| Watchdog timer | Yes (WDT) |
| Low-power modes | Sleep, Idle, and power-save modes |
| Oscillator options | Internal, external crystal, resonator |
| Operating temperature | -40°C to +85°C |
| Dimensions (example: DIP-28) | 34.5 mm × 7.5 mm |
| Weight (typical) | 2 g (DIP package) |
| Maintenance | No special maintenance required |
| Cleaning | Use isopropyl alcohol with care |
| Safety precautions | Handle as CMOS device; use ESD protection |
Frequently Asked Questions - PIC18F43K22 Microchip
What is the programming interface for PIC18F43K22?
The chip uses ICSP (In-Circuit Serial Programming) and can be programmed with MPLAB X IDE and a PICkit programmer. Connect to the PGD, PGC, and PGM pins.
What is the supply voltage range?
The operating voltage is 1.8V to 5.5V. Use decoupling capacitors for stable operation.
How many digital I/O pins are available?
It provides 25 digital I/O pins that can be individually configured as input or output.
Does it have an internal oscillator?
Yes, the internal oscillator can run at multiple frequencies and allows operation without an external clock.
Can I use it in low-power battery applications?
Absolutely. It includes Sleep, Idle and Deep Sleep modes and supports a wide voltage range suitable for battery power.
What communication peripherals are included?
It has SPI, I2C, and USART for serial communication with other devices.
How many ADC channels does it have?
There are 15 channels of 10-bit ADC for reading analog sensors.
What is the maximum clock speed?
With an external clock, it can use up to 20 MHz, and with the internal PLL, the CPU can run at 64 MHz.
Does it have PWM capability?
Yes, it offers 5 PWM channels with configurable frequency and duty cycle, useful for motor control or LED dimming.
How do I reset the microcontroller?
Pull the MCLR pin low to reset hardware. You can also issue a software RESET instruction or cycle power.
User questions about PIC18F43K22 Microchip
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USER MANUAL PIC18F43K22 Microchip
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Product information
Brand : Microchip
Model : PIC18F43K22
Category : Microcontroller