Details

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BUY ATMEGA328P-PU https://www.utsource.net/itm/p/11249148.html

Parameter	Description	Value
Package	Package Type	PDIP-28
Operating Voltage (Vcc)	Supply Voltage Range	1.8V to 5.5V
Clock Speed	Maximum Frequency	20 MHz
Flash Memory	Program Memory Size	32 KB (of which 0.5 KB used by bootloader)
EEPROM	EEPROM Size	1 KB
SRAM	SRAM Size	2 KB
I/O Pins	Number of I/O Pins	23
Analog-to-Digital Converter (ADC)	ADC Channels	8
Analog Comparator	Analog Comparator	1
PWM Channels	PWM Channels	6
USART	USARTs	1
SPI	SPI Interface	1
TWI (I2C)	TWI/I2C Interface	1
Timers/Counters	8-bit Timer/Counter	2
Timers/Counters	16-bit Timer/Counter	1
Watchdog Timer	Watchdog Timer	Yes
Interrupts	External Interrupts	6
Power Consumption	Active Mode (1 MHz, 3.0V, 25°C)	0.5 mA
Power Consumption	Power-down Mode (3.0V, 25°C)	0.1 μA
Operating Temperature	Temperature Range	-40°C to 85°C
Programming Interface	In-System Programming (ISP)	Yes
Programming Interface	High-Voltage Serial Programming (HVSP)	Yes
Programming Interface	Parallel Programming	Yes

Instructions for Using ATMEGA328P-PU

1. Power Supply:

   • Connect Vcc (pin 7) to your power supply (1.8V to 5.5V).
   • Connect GND (pin 8 and pin 22) to ground.

2. Clock Configuration:

   • For external clock or crystal, connect it between XTAL1 (pin 9) and XTAL2 (pin 10).
   • For internal 8 MHz oscillator, no external components are required.

3. Programming:

   • Use an ISP programmer to program the ATMEGA328P-PU.
   • Connect the ISP programmer to the following pins:
     • MISO (pin 18)
     • MOSI (pin 17)
     • SCK (pin 19)
     • RESET (pin 1)
     • Vcc (pin 7)
     • GND (pin 8)

4. Serial Communication:

   • Connect RXD (pin 2) to the TX pin of the external device.
   • Connect TXD (pin 3) to the RX pin of the external device.

5. Analog Inputs:

   • Connect analog signals to any of the ADC pins (pins 23 to 30).

6. Digital I/O:

   • Configure digital pins as input or output using the appropriate registers (DDRx, PORTx, PINx).

7. Interrupts:

   • Enable interrupts in the microcontroller by setting the corresponding bits in the GICR register.
   • Write interrupt service routines (ISRs) to handle specific interrupts.

8. Power Management:

   • Use sleep modes to reduce power consumption. Set the sleep mode using the SLEEP_MODE register and enable the sleep mode with the SLEEP instruction.

9. Reset:

   • A reset can be triggered by pulling the RESET pin (pin 1) low for at least 4 clock cycles.

10. Debugging:

    • Use the built-in debugWIRE interface for on-chip debugging. Connect the debugWIRE pin (pin 2) to your debugger.

For more detailed information, refer to the ATMEGA328P datasheet and application notes provided by Microchip Technology.

(For reference only)