Details

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BUY M48T86-MH1 https://www.utsource.net/itm/p/12599577.html

Parameter	Description
Part Number	M48T86-MH1
Function	Real-Time Clock (RTC) with Integrated SRAM
Package Type	SOIC-8
Operating Voltage	2.0V to 5.5V
Temperature Range	-40掳C to +85掳C
Clock Accuracy	卤2 minutes per year at 25掳C
SRAM Size	512 bits (64 bytes)
Data Retention Time	10 years (with backup power)
Interface	Two-wire I2C interface
Supply Current	300nA (typical, in backup mode)
Standby Current	1渭A (typical)

Instructions for Use:

1. Power Supply Connection: Connect the VCC pin to the supply voltage within the operating range (2.0V to 5.5V). Ensure a stable power supply to avoid data corruption.
2. Backup Power: For continuous operation during main power loss, connect a backup battery to the VBAT pin.
3. I2C Interface Setup: The SDA and SCL pins are used for communication. Ensure proper pull-up resistors are connected to these lines.
4. Initialization: Upon powering up, initialize the device by setting the time and date registers using the I2C commands.
5. Reading Time/Date: Use the appropriate I2C read commands to retrieve the current time and date from the device.
6. Writing Data to SRAM: To store data in the integrated SRAM, use the I2C write commands to address the desired memory locations.
7. Reading Data from SRAM: Retrieve stored data by addressing the SRAM memory locations via I2C read commands.
8. Handling Interrupts: Configure the INT/SQW pin for interrupt or square wave output as needed, following the datasheet guidelines.

For detailed command sequences and timing diagrams, refer to the official M48T86-MH1 datasheet provided by the manufacturer.

(For reference only)