Description
www.DataSheet4U.com DS1689/DS1693 3-Volt/5-Volt Serialized Real-Time Clock with NV RAM Control www.maxim-ic.com .
X1 X2
RCLR
AD0-AD7
PWR KS CS
ALE
WR
RD
VCCO
IRQ
ORDERING INFORMATION
PART # DS1689S DS1689SN DS1693 DESCRIPTION RTC IC, 28-pin SOIC RTC IC, 28-pin.
Features
* Incorporates industry standard DS1287 PC clock plus enhanced features:
* +3- or +5V operation
* 64-bit silicon serial number
* 64-bit customer specific ROM or additional serial number available
* Power control circuitry supports system power-on from date/time alarm or key closure