Overview
The X1242 is a Real Time Clock (RTC) with a 16k (2k x 8) EEPROM, calendar, alarms, and CPU supervisor circuits. It features a 2-wire interface, interoperable with I2C, and a 400kHz data transfer rate.
Key Features
The device includes a selectable watchdog timer, low voltage reset, and a secondary power supply input with internal switch-over circuitry. It also has a 2Kbyte EEPROM array, providing a safe and secure memory for critical user and configuration data.
The RTC is fully operational from 1.8 to 5.5 volts and provides a 2Kbyte EEPROM array. The device is available in 8-lead SOIC and TSSOP packages.
Power Control Operation
The power control circuit accepts a Vcc and a VBACK input, switching to VBACK when Vcc falls below VBACK by 0.2V, and switching back to Vcc when Vcc exceeds VBACK.
Manual:
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