DL927 timer equivalent, 4-digit countdown/up timer.
* Special alarm trigger output for switch control or for driving another melody IC
* Internal voltage doubler
* 32,768Hz quartz crystal time base
* Single.
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, .
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