Details

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BUY ATMEGA128L-8AU https://www.utsource.net/itm/p/11249128.html

Parameter	Description	Value/Range
Device	Microcontroller	ATMEGA128L-8AU
Package	Package Type	TQFP (44-pin)
Operating Voltage (Vcc)	Supply Voltage Range	2.7 V to 5.5 V
Clock Frequency	Maximum Clock Speed	8 MHz
Flash Memory	Program Memory Size	128 KB
EEPROM	EEPROM Size	4 KB
SRAM	SRAM Size	4 KB
I/O Pins	Number of I/O Pins	32
ADC	Analog-to-Digital Converter	10-bit, 8 channels
DAC	Digital-to-Analog Converter	Not Available
Timers	Number of Timers	3 (2 x 8-bit, 1 x 16-bit)
Serial Communication	Interfaces	SPI, USART, TWI (I2C)
Interrupts	Number of Interrupt Sources	21
Power Consumption	Active Mode (8 MHz, 3.0 V)	9.5 mA
Power Consumption	Power Down Mode (3.0 V)	0.1 μA
Temperature Range	Operating Temperature Range	-40°C to 85°C
Programming Interface	In-System Programming (ISP), High-Voltage Serial Programming (HVSP),	ISP, HVSP, JTAG
JTAG Support	Joint Test Action Group (JTAG) Support	Supported
Watchdog Timer	Watchdog Timer (WDT)	Yes
Brown-out Detection	Brown-out Detection (BOD)	Yes

Instructions for Using ATMEGA128L-8AU

1. Power Supply:

   • Connect the Vcc pin to a power supply between 2.7 V and 5.5 V.
   • Connect the GND pin to ground.

2. Clock Configuration:

   • Use an external crystal or resonator for the clock source if needed.
   • Configure the fuse bits to select the appropriate clock source.

3. Programming:

   • Use an ISP programmer to program the device.
   • Ensure the programming voltage (Vpp) is set correctly for the selected programming method.
   • Use software like AVR Studio or Atmel ICE for programming and debugging.

4. I/O Pin Configuration:

   • Set the direction of I/O pins using the DDRx registers.
   • Read or write to the PORTx registers to control the state of the pins.

5. ADC Usage:

   • Configure the ADC prescaler and reference voltage.
   • Start the conversion by setting the ADSC bit in the ADCSRA register.
   • Read the result from the ADCL and ADCH registers.

6. Timer Configuration:

   • Set the prescaler and mode of operation for each timer.
   • Use the OCRx registers to set compare values for PWM or interrupt generation.

7. Serial Communication:

   • Configure the baud rate and frame format for USART.
   • Use the UDR register for data transmission and reception.
   • For SPI, configure the SPCR register and use the SPDR register for data transfer.
   • For I2C, configure the TWCR register and use the TWDR register for data transfer.

8. Interrupt Handling:

   • Enable global interrupts by setting the I bit in the SREG register.
   • Enable specific interrupts by setting the corresponding bits in the relevant control registers.
   • Write interrupt service routines (ISRs) to handle interrupts.

9. Power Management:

   • Use the sleep modes (Idle, Power-down, etc.) to reduce power consumption.
   • Enable the watchdog timer to reset the device if it hangs.

10. Brown-out Detection:

    • Enable BOD by setting the appropriate fuse bits.
    • The device will reset if the supply voltage drops below the threshold.

For detailed information, refer to the ATMEGA128L-8AU datasheet and application notes provided by Atmel.

(For reference only)