DS1259 Datasheet (Dallas Semiconducotr)

DS1259, Battery Manager Chip

NC VBAT BF NC 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 VCCI VCCI NC VCCO VCCO PF NC NC BAT RST GND PF VCCO VCCI - No Connect - Battery Input Connection - Battery Fail Output Signal - Battery Output - Reset Input - Ground - Power Fail Output Signal - RAM Supply - +5V Supply VBAT BF NC BAT RST G

DS1259 Features

* Facilitates uninterruptible power Uses battery only when primary VCC is not available Low forward voltage drop Power fail signal interrupts processor or write protects memory Consumes less than 100 nA of battery current Low battery warning signal Battery can be electrically disconnected upon command