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Specifications
SKU: 1534535
5.0 or 3.3 V TIMEKEEPER® supervisor
| Parameter | Description | Value |
|---|---|---|
| Part Number | Product Identifier | M48T201Y70MH1 |
| Function | Real-Time Clock (RTC) with Integrated SRAM | 256 bytes |
| Package Type | Package Style | SOIC-8 |
| Operating Voltage | Supply Voltage Range | 2.0V to 5.5V |
| Operating Temperature | Temperature Range | -40°C to +85°C |
| Clock Accuracy | Accuracy at 25°C | ±2 ppm (Typical) |
| SRAM Retention | Data Retention Time | 10 years (at 25°C) |
| Communication Interface | Data Communication Protocol | I2C (Two-Wire Serial Interface) |
| Oscillator Type | Internal Oscillator | 32.768 kHz |
| Power Consumption | Active Mode Current | 300 nA (Typical) |
| Standby Current | Standby Mode Current | 100 nA (Typical) |
| Pin Configuration | Pin 1: VCC, Pin 2: SDA, Pin 3: GND, Pin 4: SCL, Pin 5: VCC, Pin 6: NC, Pin 7: NC, Pin 8: NC | |
| Order Quantity | Minimum Order Quantity | 1000 units |
Instructions for Use:
Power Supply:
- Connect the VCC pins (Pins 1 and 5) to the power supply.
- Connect the GND pin (Pin 3) to the ground.
Communication:
- Connect the SDA (Pin 2) and SCL (Pin 4) pins to the I2C bus lines.
- Ensure pull-up resistors are used on the SDA and SCL lines to VCC.
Initialization:
- Power on the device and initialize the I2C communication.
- Set the time and date using the appropriate I2C commands.
Reading Time and Date:
- Use the I2C read commands to retrieve the current time and date from the RTC registers.
Writing to SRAM:
- Access the SRAM by writing to the appropriate memory addresses via the I2C interface.
Power Management:
- To enter standby mode, reduce the activity on the I2C bus and ensure the device is powered with a low current.
Storage and Handling:
- Store the device in a dry environment to prevent moisture damage.
- Handle with care to avoid static discharge, which can damage the device.
End-of-Life Considerations:
- When the device reaches the end of its useful life, follow proper disposal procedures to minimize environmental impact.
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