M41T11

BUY M41T11 https://www.utsource.net/itm/p/12612363.html

Instructions

1. Power Supply Connection:

   • Connect Vdd to the positive supply voltage (2.0V to 5.5V).
   • Connect Vss to ground.

2. External Crystal Connection:

   • Connect a 32.768kHz crystal between X1 and X2 pins for accurate timekeeping.

3. I2C Communication:

   • Ensure proper pull-up resistors on SDA and SCL lines.
   • Use the fixed I2C address (1101000) for communication.

4. Initialization:

   • Set the initial date and time using I2C commands.
   • Configure the alarm settings if needed.

5. Backup Power:

   • If using a backup battery, connect it to Vbat pin via the trickle charger circuitry provided by the device.

6. Reading Time/Date:

   • Use I2C read commands to retrieve current time and date data from registers.

7. Alarm Setup:

   • Program the alarm registers to set desired alarm times.
   • Enable the alarm interrupt if required.

8. Output Frequency:

   • For applications requiring a clock signal, enable the 32.768kHz output.

9. Low Power Mode:

   • In low power or backup mode, ensure that Vdd is disconnected and Vbat is supplying power to maintain RTC functionality.

10. Handling:

    • Handle the device with care to avoid damage to sensitive components.