DL927 Datasheet (JinFengDa) - 4-DIGIT COUNTDOWN/UP TIMER

DL927, 4-DIGIT COUNTDOWN/UP TIMER

DL927 is an UP/DOWN timer IC.

It can directly drive a standard 4 digit 1/4 duty cycle LCD.

Maximum countdown time is 59:59 or 99:59.

Count up cycle time is 60 or 100 minutes by bonding option.

Also bonding option is for alarm time 32 or 64 seconds, 2kHz, and up/down or just down function.

Feasible

DL927 Features

* Special alarm trigger output for switch control or for driving another melody IC

* Internal voltage doubler

* 32,768Hz quartz crystal time base

* Single 1.5V battery operation

* Direct drive buzzer

* 4 digit LCD display

* Maximum count 59:59 min or 99:59 min (bonding op