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掳C to +85掳C
Clock Accuracy	卤2 minutes per month at 25掳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)