DS1397, DS1395 Datasheet (Dallas Semiconductor)

DS1397, DS1395, RAMified Real Time Clock

VDD, VSS * Bus operational power is supplied to the part via these pins.

The voltage level present on these pins should be monitored to transition between operational power and battery power.

D0-D7 * Data Bus (bidirectional): Data is written into the device from the data bus if eith

DS1397 Features

* PIN ASSIGNMENT A0 A1 X2 X1 STBY D0 D1 D2 D3 D4 D5 D6 D7 V SS 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 27 26 25 24 23 22 21 20 19 18 17 16 15 A2 A3 VDD SQW A4 A5 VBAT IRQ RESET RD BGND WR XRAM RTC

* Ideal for EISA bus PCs

* Functionally compatible mode with MC146818 in 32 KHz