Details

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BUY DS1315 https://www.utsource.net/itm/p/12620441.html

Parameter	Description
Device Type	Real-Time Clock (RTC) with EEPROM
Package	SO-8
Operating Voltage (Vcc)	2.0V to 5.5V
I/O Voltage (Vio)	1.8V to 5.5V
Temperature Range	-40°C to +85°C
Clock Accuracy	±2 minutes per month at 25°C
Frequency Output	32.768 kHz
EEPROM Size	64 bytes
Write Cycle Time	5ms typical, 10ms maximum
Standby Current	300nA typical
Active Current	1.2mA typical

Instructions

1. Power Supply Connection:

   • Connect Vcc to the power supply within the range of 2.0V to 5.5V.
   • Ensure a stable power supply to maintain accurate timekeeping.

2. Crystal Connection:

   • Attach a 32.768 kHz crystal between X1 and X2 pins for frequency output.

3. Communication Protocol:

   • Use I2C protocol for communication.
   • Set up the I/O voltage (Vio) according to the system requirements, ensuring it is within the specified range.

4. Writing to EEPROM:

   • Write data to the EEPROM by addressing the specific memory location.
   • Wait for the write cycle to complete (up to 10ms).

5. Reading from EEPROM:

   • Address the desired memory location and read the data as required.

6. Time Setting:

   • Initialize the RTC by setting the current date and time through the I2C interface.

7. Power Management:

   • The device has low standby current, making it suitable for battery-backed applications.
   • Ensure proper handling of power transitions to avoid data corruption in EEPROM.

8. Handling and Storage:

   • Store in a dry environment and handle with care to prevent damage to the sensitive components.

(For reference only)