Details

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BUY M48T02-150PC1 https://www.utsource.net/itm/p/12609875.html

Parameter	Description	Value
Product Name	M48T02-150PC1	Real-Time Clock (RTC)
Package Type	Package Style	SOIC-8
Operating Voltage	Supply Voltage Range	2.0V to 5.5V
Frequency	Oscillator Frequency	32.768 kHz
Temperature Range	Operating Temperature Range	-40掳C to +85掳C
Accuracy	Frequency Tolerance at 25掳C	卤20 ppm
Backup Power	Supports Battery Backup	Yes
Memory	Integrated SRAM	256 bytes
Communication	Interface Type	I2C
Pin Count	Number of Pins	8
Mounting Type	Surface Mount	Yes

Instructions for Use:

1. Power Supply Connection:

   • Connect VCC pin to the supply voltage between 2.0V and 5.5V.
   • Connect GND pin to the ground.

2. Oscillator Configuration:

   • The device uses an external 32.768 kHz crystal connected to X1 and X2 pins for accurate timekeeping.

3. Battery Backup:

   • For battery backup, connect a suitable backup power source to VBAT pin to maintain time and memory during main power loss.

4. I2C Interface Setup:

   • Configure the SDA (data) and SCL (clock) lines as per the I2C protocol.
   • Ensure pull-up resistors are used on both SDA and SCL lines.

5. Initialization:

   • Upon first use or after reset, initialize the RTC by setting the correct date and time through the I2C interface.

6. Memory Access:

   • Access the integrated SRAM using I2C commands for reading and writing data.

7. Handling Precautions:

   • Handle with care to avoid static damage.
   • Ensure proper grounding and shielding to prevent electromagnetic interference.

8. Storage Conditions:

   • Store in a dry environment away from direct sunlight and high temperatures.

For detailed programming and specific command sequences, refer to the datasheet provided by the manufacturer.

(For reference only)