SILAN SC8560

Silan
Semiconductors
SC8560
DIGITAL ALARM CLOCK
DESCRIPTION
The SC8560 is an alarm equipped digital clock IC with built-in
drivers capable of directly driving LED display equipment.
SOP-28
FEATURES
* Single chip P-channel ED MOS LSI
* LED direct drive using time division (duplex configuration)
* Wide operating power supply voltage range
* Built-in alarm function with 24-hour control
SDIP-28
* Supports changeover between 12-hour AM/PM and 24-hour
displays
* Built-in battery backup CR oscillator
* Built-in automatic fast forward function for hour and minute
ORDERING INFORMATION
settings
* Built-in snooze function supporting repeat use
* Uses 50Hz as standard frequency
* Built-in sleep timer function (maximum intervals for 59 minutes or
Part No.
Package
SC8560
SDIP-28-400-1.778
SC8560S
SOP-28-375-1.27
1 hour and 59 minutes)
* Equipped with power failure display function
APPLICATIONS
* 900Hz output for alarm tone
* Alarm clocks
* Clock-radios
PIN CONFIGURATIONS
AM & 10'S HR ag & de
1
28 12/24 HR SELECT
PM & 10'S HR b
2
27 CR INPUT
10'S HR c & HR c
3
26 50/60Hz SELECT
HR b & g
4
25 50/60Hz INPUT
HR c & d
5
24 SNOOZE INPUT
HR a & f
6
23 SLEEP INPUT
10'S MIN a & f
7
10'S MIN b & g
8
10'S MIN c & d
9
SC8560
22 HOUR SET
21 MIN SET
20 VDD
10'S MIN e & MIN e 10
19 ALARM DISP
MIN b & g 11
18 ALARM OFF
MIN c & d 12
17 SLEEP OUT
MIN a & f 13
16 ALARM OUT
COLON OUT 14
15 VSS
HANGZHOU SILAN MICROELECTRONICS CO.,LTD.
Rev: 1.1
1
2003.06.26
21
19
23
24
Alarm
Display
Sleep
Display
Snooze
Input
Hour
22
Set
Minute
Set
50/60Hz 25
Input
CR
27
Input
OSC
PWR UP
CTR
Reset
Control
Stand by DET
Tone
15
VSS
20
VDD
Second
display
2
Display
Control
2Hz
SEC Disp
T. Disp
AL. Disp
SL. Disp
PWR UP
Time HR. CTR
GATE
T Disp &
S. Sample
Time & F. Sample
1Hz
Control
Sleep CTR
Time & F. Sample
18
Alarm
OFF
Output
Control
PWR
UP
Alarm & F. Sample
Alarm HR. CTR
Comparator
Alarm MIN CTR
Time & S. Sample
14
Colon
Output
F. Sample
SEC CTR
2Hz
1/2
Time MIN. CTR
1/25 or 1/30
S. Sample
50/60Hz
Sec RSTYHLD
T. RST
AL. RST
Input
Control
GATE
26
Sec
Blank &
Flash
50/60Hz
16
17
Alarm Sleep
Output Output
Sleep
Alarm
Time
PF.
DET
12/24HR
Select
28
Output Decoder/Driver
50/60Hz
Select
13 Min a&f
12 Min c&d
11 Min b&g
10 10'S MIN e& Min e
9 10'S MIN c&d
8 10'S MIN b&g
7 10'S MIN a&f
6 HR a&f
5 HR c&d
4 HR b&g
3 10'S HR c& HR c
2 PM & 10'S HR b
1 AM & 10'S HR ag & de
Silan
Semiconductors
SC8560
BLOCK DIAGRAM
HANGZHOU SILAN MICROELECTRONICS CO.,LTD.
Rev: 1.1
2003.06.26
Silan
Semiconductors
SC8560
ABSOLUTE MAXIMUM RATINGS(Ta =25°C, Vss =0V)
Characteristic
Symbol
Maximum Supply Voltage
VDD max.
Condition
Value
Unit
-15.0 ~ + 0.3
V
Input Voltage 1
VIN(1)
50/60Hz input
-15.0 ~ + 0.3
V
Input Voltage 2 (except pin 26)
VIN(2)
Except 50/60Hz input
-15.0 ~ + 0.3
V
Output Voltage
VOUT
-15.0 ~ + 0.3
V
Input Clamp current( pin 26)
IIN
50/60Hz input
Allowable Power Dissipation
PD
Ta=70°C
-0.4 ~ +0.4
mA
700
mW
Operating Temperature
Topr
-30 ~ +70
°C
Storage Temperature
Tstg
-55 +125
°C
ELECTRICAL CHARACTERISTICS (Tamb=25°C, VDD=-12.0V, VSS=0V,Unless otherwise specified)
Parameter
Supply Voltage
Symbol
Test conditions
Max
Unit
-7.5
V
VDD+2
V
VDD+2
V
50/60Hz Input, VIN=VSS
10
μA
50/60Hz Input, VIN=VDD
10
μA
Input pins other than 50/60Hz
20
μA
10
μA
VDD
VIH(1)
50/60Hz Input
Input “L” level Voltage
VIL(1)
50/60Hz Input
Input “H” level Voltage
VIH(2)
Except 50/60Hz input
Input “L” level Voltage
VIL(2)
Except 50/60Hz input
50/60 Hz input pin input voltage
VAC-IN
IIH1
Input “L” level current(1)
IIL1
Input “H” level current(2)
Input “L” level current(2)
Output “H” level current(1)
Output leakage current(1)
Output “H” level current(2)
Output leakage current(2)
IIH2
IIL2
IOH1
IOF1
IOH2
IOF2
Output “H” level current(3)
-1.0
V
-1.5
V
VLED
V
Input,VIN=VSS
Input pins other than 50/60Hz
Input,VIN=VDD
Alarm output and sleep output,
5
mA
VOH=VSS-1V
Alarm output and sleep output,
10
μA
VOUT=VDD
AM& 10’S HR ag&de (24H
36
mA
mode),VOUT=VDD-1V
AM& 10’S HR ag&de (24H
20
μA
mode),VOUT=VDD
Segment Output other than
IOH3
Typ
-14.0
Input “H” level Voltage
Input “H” level current(1)
Min
18
mA
those listed above , VOUT=Vss1V
(To be continued)
HANGZHOU SILAN MICROELECTRONICS CO.,LTD.
Rev: 1.1
3
2003.06.26
Silan
Semiconductors
SC8560
(Continued)
Parameter
Symbol
Output leakage current(3)
IOF3
Power failure detection voltage
Test conditions
ICC
Backup oscillator stability factor
fs
Backup oscillator accuracy
fa
Typ
Max
Unit
20
μA
7
mA
-10
10
%
-10
10
%
those listed above, VOUT=VDD
VDF
Consumption current
Min
Segment Output other than
-7.5
Output set to off and pull-down
-5.0
V
5
attached input set to open
Standard value,900Hz,
VDD= -9V 10%
Standard value,900Hz,
VDD= -9V
DESCRIPTION OF OPERATIONS
Terminal Description
Operating Description
Built-in Shumidt circuit enable noise elimination at 50/60Hz commercial
50/60 Hz Input:
frequencies with use of a simple CR filter. Built-in pull-up resistor.
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
CR Input
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.
When 50/60 selective input is connected to Vss,50Hz use is enable. When 50/60
50/60Hz Selective Input
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.
There are two setting inputs for use with “hour” and “minute”. Time content
Time Setting Input
settings shown in Table 2 are possible by activating Vss to these pins. A pull-down
resister is built-in.
Leaving this pin unconnected (VDD) causes the 12-hour basis to be selected,
12/24H Select Input
connecting this pin to VSS cause the 24-hour basis to be selected .An internal pulldown resistor is provided.
(To be continued)
HANGZHOU SILAN MICROELECTRONICS CO.,LTD.
Rev: 1.1
4
2003.06.26
Silan
Semiconductors
SC8560
(Continued)
Terminal Description
Operating Description
If the power supply voltage drops and is applied again, all the on-segments flash
Power Failure Detection display and the power failure indication mode is entered. The power failure indication
mode is released by applying VSS to “hour set” or “ minutes set”.
The alarm signal outputs when alarm content marches the time .When not reset
Alarm Operation and Alarm
Output
by either snooze input or alarm off input, output continues after l hour and 59
minutes. This output signal consists of 900 Hz 2 Hz intermittent (50% duty)
modulation signals. When the need arises, a filter can be applied to alter the alarm
signal to a DC signal.
When the alarm is sounding and instantly activating Vss to this pin, alarm output is
set to OFF for a period between 8 and 9 minutes after which time the alarm signal
is once again output .The snooze function can be used repeatedly in l hour and 59
Snooze Input
minutes intervals. A pull-down resist is built-in. Activating Vss to the snooze pin
when the alarm is OFF resets the sleep timer counter to [0:00].(This is known as
the one-touch sleep timer reset function.)
Activating this input pin to Vss instantly sets alarm output to OFF. A pull-down
Alarm Off Input
resistor is built-in.
Sleep output can turn on the radio and can be set for time intervals of 59 minutes
or l hour and 59 minutes. Refer to Table 2 for the proper selection procedure (59
Sleep Timer and Sleep Output:
minutes or l hour and 59 minute selection). This sleep timer is constructed using a
down counter and when the counter content arrives at [00], output is set to off and
the radio turns off .Adding Vss to snooze input turns sleep output off, when sleep
output is on.
TABLE 1: DISPLAY MODES
Selective
Input
Display Mode
Alarm
Sleep
NC
NC
Time display
Vss
NC
Alarm display
NC
Vss
Sleep display
Digit No.1
10’s place for
hour ,AM/PM
10’s place for
hour ,AM/PM
Digit No.2
Hour
Hour
Hour
Clear
Vss
Vss
Second display
Clear
Minute
Digit No.3
Digit No.4
10’s place for
minute
10’s place for
minute
10’s place for
minute
10’s place for
second
Minute
Minute
Minute
Second
Note: Activating Vss using two inputs simultaneously (alarm select and sleep select), the display mode is switched
to display seconds.
HANGZHOU SILAN MICROELECTRONICS CO.,LTD.
Rev: 1.1
5
2003.06.26
Silan
Semiconductors
SC8560
TABLE 2: SETTING CONTENTS
Display Mode
Set lnput
HOUR
Functions
lmmediately adds 1 to hour digits and then assigns an additional 1. at a speed
of 2 Hz , after each 1/4 to 3/4 second .
lmmediately adds 1 to minute digits and then assigns an additional 1. at a
Time
MIN
speed of 2 Hz, after each 1/4 to 3/4 second .
Seconds are reset.
BOTH
Operates both as outline above.
HOUR(Note)
Second digits are cleared to [00].
Second
MIN
(Alarm&Sleep)
BOTH
HOUR
Alarm
MIN
BOTH
HOUR
Sleep
Time holds.
Resets hour and minute digits as [0:00] when operating in 24-Hmode or [12:00]
when operating in 12-H mode.
lmmediately adds 1to hour digits and then assigns an additional 1, at a speed
of 2 Hz, after each 1/4to 3/4 second.
lmmediately adds 1 to minute digits and then assigns an additional 1, at a
speed of 2 Hz, after each 1/4to 3/4 second.
Resets hour and minute digits to [0:00] when operating in 24-hour mode or
[12:00] when operating in, 12-hour mode.
Sets sleep counter to [0:59] instantly when VDD is activated to sleep select.
Sets sleep counter to [1:59] instantly when VDD is activated to sleep select and
hour at the same time.
MIN
Sleep counter looses 1 at a speed of 2 Hz
BOTH
Sleep counter looses 1 at a speed of 2 Hz
Once conditions have been switched to reset or hold, input of other functions is locked until HOUR and MIN
input have separated.
Note:
When the digital reading for seconds is between 30 and 59 seconds, 1 is added to digits for minutes as the
digital reading for seconds resets to [00]
HANGZHOU SILAN MICROELECTRONICS CO.,LTD.
Rev: 1.1
6
2003.06.26
AC
Backup
Battery
100kȍ
0.001μF
23
22
7
1
3
4
5
HR
c&d
6
HR
a&f
18
17
2.2kȍ
9
11
16
2
e
f
d
g
a
13
MIN
a&f
c
b
14
Colon
Out
Vss
15
2.2kȍ
4.7kȍ
27kȍ
27kȍ
This circuit is used as noise interference
stripper for the LW band.( Backup control
is enabled except for battery backup mode
12
NOTE: 1
10
10'S 10'S
MIN MIN
MIN MIN e &
b&g c&d
c & d MIN e
Duplex LED
8
10'S
MIN
b&g
Cathode
Common
7
10'S
MIN
a&f
19
0.47μF
Alarm Alarm Sleep Alarm
Disp
Off
Out
Out
12 Hour Display and 60Hz Circuit Diagram
Cycle 2
Cycle 1
2
AM & PM & 10'S
HR
10'S HR 10'S HR c &
b&g
ag & de HR b HR c
SC8560
V DD
24
20
25
21
26
28
12/24 CR 50/60Hz 50/60Hz Snooze Sleep HOUR MIN
HR Input Select Input Input Input
Set
Set
Select
60Hz
NC
12HR
NC
27
R1=110kȍ
f=900Hz
4.7kȍ
C1=0.015μF
Silan
Semiconductors
SC8560
CLOCK-RADIO APPLICATION CIRCUIT (Positive Power Supply)
HANGZHOU SILAN MICROELECTRONICS CO.,LTD.
Rev: 1.1
2003.06.26
AC
C1
0.015μF
R1
110kȍ
23
22
8
1
3
4
5
HR
c&d
6
HR
a&f
8
10'S
MIN
b&g
18
17
9
11
16
12
e
f
d
g
a
13
MIN
a&f
c
b
14
Colon
Out
Vss
15
When Battery backup or tone output is not
used, CR input is connected to Vss.
2
NOTE: 1
10
10'S 10'S
MIN MIN
MIN MIN e &
b&g c&d
c & d MIN e
Cathode Common
7
10'S
MIN
a&f
SC8560
19
Alarm Alarm Sleep Alarm
Disp
Off
Out
Out
12 Hours Display and 60Hz Circuit diagram
Cycle 2
Cycle 1
2
AM & PM & 10'S
HR
10'S HR 10'S HR c &
b&g
ag & de HR b HR c
V DD
24
20
25
21
26
28
330μF
12/24 CR 50/60Hz 50/60Hz Snooze Sleep HOUR MIN
HR Input Select Input Input Input
Set
Set
Select
60Hz
NC
12HR
NC
27
f=900Hz
Piezo Buzzer
Silan
Semiconductors
SC8560
CLOCK APPLICATION CIRCUIT (Negative Power Supply)
HANGZHOU SILAN MICROELECTRONICS CO.,LTD.
Rev: 1.1
2003.06.26
100kȍ
0.001μF
Silan
Semiconductors
SC8560
PACKAGE OUTLINE
SDIP-28-400-1.778
UNIT:mm
SOP-28-375-1.27
UNIT:mm
HANGZHOU SILAN MICROELECTRONICS CO.,LTD.
Rev: 1.1
9
2003.06.26
Silan
Semiconductors
SC8560
Attachment
Revision History
Data
2000.12.31
REV
1.0
Description
Page
Original
Add ”SOP-28-375-1.27”
2003.06.26
1.1
1, 9
Add” ORDERING INFORMATION”
1
DEL”FUNCTIONS”
1
HANGZHOU SILAN MICROELECTRONICS CO.,LTD.
Rev: 1.1
10
2003.06.26