Details

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BUY M48T559Y-MH1 https://www.utsource.net/itm/p/908282.html
64 Kbit 8Kb x8 TIMEKEEPER SRAM with ADDRESS/DATA MULTIPLEXED

Parameter	Description
Device Type	Real-Time Clock (RTC) with Integrated Memory
Part Number	M48T559Y-MH1
Package Type	SOIC-16
Operating Voltage	2.0V to 5.5V
Operating Temperature	-40°C to +85°C
Clock Accuracy	±2 ppm at 25°C
Memory Size	512 x 8 bits (EEPROM)
Communication Interface	I2C
Oscillator Type	Built-in oscillator
Power Consumption	< 300nA in standby mode
Battery Backup	Yes, supports VBAT for memory retention

Instructions

1. Power Supply Connection:

   • Connect the VCC pin to your system's power supply within the specified voltage range.
   • Connect the VBAT pin to a backup battery or capacitor to retain the clock and memory data during main power loss.

2. I2C Communication Setup:

   • Ensure that the SDA and SCL lines are connected to pull-up resistors.
   • Configure the I2C address according to the hardware setup if necessary.

3. Initialization:

   • After powering up, initialize the RTC by setting the correct time and date via I2C commands.
   • Verify the settings using read commands to ensure accuracy.

4. Memory Operations:

   • Use standard I2C write and read commands to access the EEPROM memory.
   • Be cautious not to exceed the memory address boundaries.

5. Interrupt Handling:

   • The INT pin can be used to generate alarms or other interrupt events based on programmed conditions.

6. Testing and Verification:

   • Regularly check the operation of the RTC to ensure it maintains accurate timekeeping.
   • Test memory writes and reads to confirm data integrity.

7. Storage and Handling:

   • Store in a dry environment to prevent moisture damage.
   • Handle with care to avoid static damage; use ESD protection when handling.

(For reference only)