Details

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Parameter	Description	Value
Package Type	Package style	TQFP-44
Pin Count	Number of pins	44
Operating Voltage (Vcc)	Supply voltage range	1.8V to 5.5V
Clock Speed	Maximum clock frequency	8 MHz
Flash Memory	Program memory size	256 KB
EEPROM	EEPROM size	4 KB
SRAM	SRAM size	8 KB
I/O Lines	Number of I/O lines	32
Analog Comparators	Number of analog comparators	1
ADC Channels	Number of ADC channels	8
ADC Resolution	ADC resolution	10 bits
DAC Channels	Number of DAC channels	0
Timers/Counters	Number of timers/counters	3 (2 x 8-bit, 1 x 16-bit)
USARTs	Number of USART interfaces	2
SPI	SPI interface	Yes
TWI	TWI (I2C) interface	Yes
PWM Channels	Number of PWM channels	6
Temperature Range	Operating temperature range	-40掳C to 85掳C
Power Consumption	Typical power consumption at 3.3V, 8 MHz	9 mA
Low Power Modes	Available low power modes	Idle, Power Save, Power Down, Standby, Extended Standby
Programming Interface	Programming interface	ISP, PDI
Package Dimensions	Dimensions of the package (LxWxH)	14 mm x 14 mm x 1.4 mm

Instructions for Use

1. Power Supply:

   • Ensure the supply voltage (Vcc) is within the specified range (1.8V to 5.5V).
   • Connect Vcc to the appropriate pin and GND to the ground pin.

2. Clock Configuration:

   • The device can be configured to use an internal 8 MHz oscillator or an external clock source.
   • For external clock sources, connect the clock signal to the XTAL1 and XTAL2 pins.

3. Programming:

   • Use an In-System Programmer (ISP) or a Program and Debug Interface (PDI) to program the device.
   • Follow the programming guidelines provided in the datasheet for specific commands and protocols.

4. I/O Configuration:

   • Configure the I/O pins as inputs or outputs using the appropriate registers (DDRx, PORTx, PINx).
   • Use pull-up resistors if necessary for input pins.

5. Peripheral Setup:

   • Initialize and configure peripherals such as ADC, UART, SPI, and I2C according to the application requirements.
   • Refer to the datasheet for register settings and initialization routines.

6. Low Power Modes:

   • Enter low power modes by setting the appropriate bits in the MCUCR and SMCR registers.
   • Use sleep modes to reduce power consumption during idle periods.

7. Interrupt Handling:

   • Enable and configure interrupts for various events (e.g., timer overflow, external interrupts).
   • Write interrupt service routines (ISRs) to handle the events.

8. Reset and Watchdog Timer:

   • Configure the watchdog timer for system reliability.
   • Use the reset pin to reset the device if necessary.

9. Environmental Considerations:

   • Ensure the operating temperature is within the specified range (-40掳C to 85掳C).
   • Protect the device from excessive humidity and static electricity.

For detailed information and specific register settings, refer to the ATMEGA2561V-8AU datasheet.

(For reference only)