Overview
The X1242 is a Real Time Clock (RTC) with a calendar, alarms, and CPU supervisor circuits. It features a 2-wire interface, 16k (2k x 8) EEPROM, and a low voltage reset.
Key Features
Selectable watchdog timer, CPU power on reset, and low voltage reset.
2-wire interface with 400kHz data transfer rate.
2Kbytes of EEPROM with 64-byte page write mode and single byte write capability.
Backup power input pin for non-rechargeable battery backup.
Operational from 1.8 to 5.5 volts.
Real Time Clock Operation
Uses an external 32.768kHz quartz crystal to maintain an accurate internal representation of time.
Leap-year correction and century byte.
Corrects for months with fewer than 31 days.
24-hour or AM/PM format.
Manual:
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