SC9318FA033 Datasheet, PDF (22/28 Pages) Silan Microelectronics Joint-stock – DTS MICROCONTROLLER FOR PORTABLE RADIO RECEIVER

SC9318-033
CLOCK
1. Principal function
The clock of 12H and 24H
2. Key to be used
UP/HOUR key. DOWN/MIN key. MEMORY/CLOCK-ADJUSTMENT key, BAND-DUAL key. DUAL-dis jumper.
CLOCK-dis jumper, 12/24h jumper.
3. Functions
a. The condition of the clock function is set as shown below according to setting of the CLOCK-dis jumper.
Without CLOCK-dis jumper: clock enable
With CLOCK-dis jumper: clock disable
b. The clock function is only the power off. So clock display and clock adjustment is not disable when power
is on.
c. If the MEMORY/CLOCK-ADJUSTMENT key is pushed in clock display, the clock adjusting enable state is
set for 5 second.
d. In that state, the hour of the clock is adjusted by pushing the UP/HOUR key, and the minute of clock is
adjusted by pushing the DOWN/MIN key.
e. If the UP/HOUR key, the DOWN/MIN key is not pushed for 5 seconds in clock adjusting enable state,
that
state will be released. In this case, the second is not set the zero.
f. When the MEMORY/CLOCK-ADJUSTMENT key is pushed in the clock adjusting enable state, the
second of the clock is set to the zero and that state are released.
g. The minute or the hour step up by 1 step/1 push, when the UP/HOUR key or the DOWN/MIN key is
pushed for less than 500ms in clock adjusting enable state. The hour step up continuously by 1 step /250
ms by UP/HOUR key is pushed for more than 500ms. the minute step up continuously by 1 step/150ms
by the [DOWN/MIN] key is pushed for more than 500ms
h. The condition of the clock display is set as shown according to setting of the 12/24h jumper.
Without 12/24 jumper 12H display
With 12/24 jumper 24H display
i. The condition of the how many clocks is set as shown below according to setting of the DUAL-dis, jumper.
Without DUAL-dis. jumper: 1 clock
With DUAL-dis. jumper: 2 clocks
In case of 2 clocks, the clocks have minute in common, so it can change only hour. The clock changed to
clock1 or clock2 by BAND-DUAL key.
ALARM
1.Principal function
The alarm is set.
2.Key to be used
UP/HOUR key, DOWN/MIN key, MEMORY/CLOCK-ADJUSTMENT key, ALARM key, BUZR (p3-1) output.
3.Functions
a. When the clock is disable, the alarm is disable.
b. The alarm is enable when power is on and power is off.
c. If the ALARM key is pushed. The alarm adjusting enable state is set for 5 seconds, and the alarm times
flash at 1 Hz rate.
In that state, the hour of the alarm is adjusted by pushing the UP/HOUR key, and the minute of alarm is
adjusted by pushing the DOWN/MIN key.
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http: www.silan.com.cn
REV:1.2 2003.05.20
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