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GENERAL  DESCRIPTION
      JC8004 is a 3.5 digits count-down/up timer
digits biplexed LCD and alarm piezoelectric buzzer.
with watch CMOS LSI circuit.
The maximum count-down time
It can directly drive a 3.5
is 20 hours and count-
cycle time is 20 hours, but LCD normally displays a
seconds.
maximum period of count-up time 19 minuets and
     JC8004 can be widely applied as a parking timer, an alarm timer, a pill box timer, a kitchen timer, a
sports timer, etc.
FUNCTION
.3.5 digits LCD display count-down/up timer with
  watch function.
.Watch time display in count-down/up timer
  mode.
.Maximum count-down time 20 hours with the
  accuracy of 1 second.
.5 minutes /10 minutes pre-alarm before count-
  down to zero.
.Buzzer output and DC output. "BUSY" output
  keeps high during timer counting.
.Auto recycle or manual re-set the count-down
  timer by 00P" option. When "OP" floated, it will
  auto recycle; when "OP" connected to Vdd, it
  will have to be manual re-set.
.Hours and minutes set independently
  Fast setting hour or minute by depressing key
  S1 or S2 continuously for 2 seconds
.20 minutes count-up cycle time with maximum
  count-up time 20 hours
.Timer reset when two keys S1&S2 depressed
  simultaneously
FEATURES
.Single 1.5V battery operation
.32768Hz quartz crystal oscillator
.3.5 digits LCD display
.An internal voltage doubter
.LCD test and alarm sound test
.Fast testing mode for production
.CMOS structure and low power consumption