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Specifications
SKU: 1753046
2K x 8 Bits CMOS Dual-Port Static Random Access
| Parameter | Description | Value |
|---|---|---|
| Device Type | Low Power CMOS Real-Time Clock/Calendar with EEPROM | - |
| Package | 16-pin SOIC (Small Outline Integrated Circuit) | - |
| Operating Voltage | Supply Voltage Range | 2.0V to 5.5V |
| Current Consumption | Active Mode Current | 1.0 μA (typical) |
| Clock Accuracy | ±20 ppm at 25°C | - |
| Temperature Range | Operating Temperature Range | -40°C to +85°C |
| Clock Output | 32.768 kHz Crystal Oscillator | - |
| EEPROM Capacity | Non-Volatile Memory Size | 128 bytes |
| Write Cycles | EEPROM Endurance | 1,000,000 cycles |
| Data Retention | Data Retention Time | 10 years |
| Communication Interface | I2C (Inter-Integrated Circuit) Interface | Up to 400 kHz |
| Pin Configuration | VCC, GND, SCL, SDA, RESET, ALM, SQW, BAT, etc. | Refer to datasheet for details |
Instructions for Use
Power Supply:
- Connect the VCC pin to the supply voltage (2.0V to 5.5V).
- Connect the GND pin to the ground.
Backup Battery:
- Connect a backup battery to the BAT pin to maintain the clock and memory during power loss.
I2C Communication:
- Connect the SCL (Serial Clock) and SDA (Serial Data) pins to the corresponding I2C lines on your microcontroller.
- Ensure pull-up resistors are connected to the SCL and SDA lines.
Reset Pin:
- The RESET pin can be used to reset the device. It is typically held high (VCC).
Alarm and Square Wave Output:
- The ALM pin can be configured to generate an alarm signal.
- The SQW pin can be configured to output a square wave signal at various frequencies (1 Hz, 4.096 kHz, 8.192 kHz, or 32.768 kHz).
Crystal Connection:
- Connect a 32.768 kHz crystal between the X1 and X2 pins for accurate timekeeping.
Programming:
- Use the I2C interface to read and write data to the EEPROM and configure the RTC settings.
- Refer to the datasheet for specific register addresses and commands.
Initialization:
- After powering up, initialize the RTC by setting the correct time and date.
- Configure the alarm and square wave outputs as needed.
Data Retention:
- Ensure the backup battery is functional to maintain data retention during power loss.
Handling:
- Handle the device with care to avoid static damage.
- Store in a dry, cool place when not in use.
For detailed programming and configuration, refer to the specific datasheet and application notes provided by the manufacturer.
(For reference only)Inquiry - MB8431-12LP
