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SC8560 Datasheet(PDF) 4 Page - Silan Microelectronics Joint-stock

Part No. SC8560
Description  The SC8560 is an alarm equipped digital clock IC with built-in drivers capable of directly driving LED display equipment.
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Manufacturer  SILAN [Silan Microelectronics Joint-stock]
Direct Link  http://www.silan.com.cn
Logo SILAN - Silan Microelectronics Joint-stock

SC8560 Datasheet(HTML) 4 Page - Silan Microelectronics Joint-stock

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Silan
Semiconductors
SC8560
HANGZHOU SILAN MICROELECTRONICS CO.,LTD.
Rev: 1.1
2003.06.26
4
(Continued)
Parameter
Symbol
Test conditions
Min
Typ
Max
Unit
Output leakage current(3)
IOF3
Segment Output other than
those listed above, VOUT=VDD
20
μA
Power failure detection voltage
VDF
-7.5
-5.0
V
Consumption current
ICC
Output set to off and pull-down
attached input set to open
5
7
mA
Backup oscillator stability factor
fs
Standard value,900Hz,
VDD= -9V
10%
-10
10
%
Backup oscillator accuracy
fa
Standard value,900Hz,
VDD= -9V
-10
10
%
DESCRIPTION OF OPERATIONS
Terminal Description
Operating Description
50/60 Hz Input:
Built-in
Shumidt
circuit
enable
noise
elimination
at
50/60Hz commercial
frequencies with use of a simple CR filter. Built-in pull-up resistor.
CR Input
When the AC power supply is interrupted, the time counter switches to a holding
state and a built-in oscillator
promptly begins operation. If 50/60Hz input
continuous for 3 clocks without arriving, this oscillator’s output is activated and
functions as the time counter clock in place of 50/60Hz input. The frequency level
of this clock oscillator is determined according to the CK Value. While the above
mentioned oscillator is operating using backup mode, all segment output is
switched to OFF. (Note) When the backup oscillator is in use due to an AC power
supply interruption, the 50/60Hz input pin must be maintained open or at a Vss
level.
50/60Hz Selective Input
When 50/60 selective input is connected to Vss,50Hz use is enable. When 50/60
selective input is left open, VDD is activated using an internal pull-down resistor
and the setting is switched to enable use at 60Hz.
Display Mode Selective Input
(Alarm Select/Sleep Select )
Since the pull-down resistor is built-in, selection from four display modes is
possible using two SPST switches (single-pole and single-throw switches). Table l
shows these display mode selections.
Time Setting Input
There are two setting inputs for use with “hour” and “minute”. Time content
settings shown in Table 2 are possible by activating Vss to these pins. A pull-down
resister is built-in.
12/24H Select Input
Leaving this pin unconnected (VDD) causes the 12-hour basis to be selected,
connecting this pin to VSS cause the 24-hour basis to be selected .An internal pull-
down resistor is provided.
(To be continued)


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