Description
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
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.
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.
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.
Memory Operations:
- Use standard I2C write and read commands to access the EEPROM memory.
- Be cautious not to exceed the memory address boundaries.
Interrupt Handling:
- The INT pin can be used to generate alarms or other interrupt events based on programmed conditions.
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.
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)
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