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부품번호 | SC3788 기능 |
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기능 | SIX DIGITS MULTIPLEXED LCD WATCH CMOS IC | ||
제조업체 | Silan Semiconductors | ||
로고 | |||
전체 10 페이지수
Silan
Semiconductors
SIX DIGITS MULTIPLEXED LCD WATCH
CMOS IC WITH ALARM AND
CHRONOGRAPH
DESCRIPTION
The SC3788 is a 6 digits and 6 functions watch CMOS LCD circuit
with an alarm and chronograph function. It can directly drive 6 digits
1/2 duty multiplexed LCD and display Hours, Minutes, Seconds,
Month, Data and Day of the Week. The user’s option enables 12
hour or 24 hour format. The SC3788 is typically used in wristwatch
and suitable for many other watch applications.
FEATURES
* Power supply voltage: 3V
* 32768 Hz quartz crystal frequency
* On-chip oscillator
* On-chip voltage reducer
* 3 buttons operation
* Alarm output drive external melody
* Piezo direct drive
* Direct interface to 1/2-duty multiplexed LCD with 6 digits and
11 flags (7 days flags, AM/PM flag, chime and alarm flag)
* Colon display
* Low power dissipation
SC3788
40 39 38 37 36 35 34 33 32 31 30 29 28 27
41
42
43 26
44 25
45 24
46 23
47 22
48 21
49 20
50 19
51 18
52 17
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
chip topography
ABSOLUTE MAXIMUM RATINGS (Ta = 25°C, VDD = 0V)
Characteristic
Symbol
Value
Supply Voltage (1) Vss1
VSS1
-2.0 ~ 0.2
Supply Voltage (2) Vss2
VSS2
-4.0 ~ 0.2
Input Voltage range
VIN VSS2 - 0.3 ~ VDD + 0.3
Operating Temperature range
Topr
-20 ~ 60
Storage Temperature range
Tstg
-40 ~ 70
Unit
V
V
V
°C
°C
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 1.0
2000.12.31
1
Silan
Semiconductors
SC3788
(Continued)
Pad No.
22
23
24
25
26
27
28
29
30
31
32
32
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
Symbol
XO
VDD*
S3*
S1*
AC
2F/2B
2E/2D
2G/2C
3F/3B
3E/3D
3G/3C
4F/4B
4E/4D
4G/4C
5F/5B
5E/5D
5G/5C
6E/6D
VSS1
MS1
DCARRY
BD
ALO
BD
VDD*
2
1
VSS2
S3*
S2*
S1*
I/O Function
O Oscillator Output
-- Positive Power Supply (0V)
I Switch 3
I Switch 1
I All Clear
O LCD Drive Output
O LCD Drive Output
O LCD Drive Output
O LCD Drive Output
O LCD Drive Output
O LCD Drive Output
O LCD Drive Output
O LCD Drive Output
O LCD Drive Output
O LCD Drive Output
O LCD Drive Output
O LCD Drive Output
O LCD Drive Output
-- Negative Power Supply (-1.55V)
O Signal to Select Melody
O Signal to Advance the Day
O Alarm Output
O Signal to Drive Melody
O Alarm Output
-- Positive Power Supply (0V)
O Voltage Doubler Outputs (256Hz, d.f. = 50%)
O Voltage Doubler Outputs (256Hz, d.f. = 50%)
-- Negative Power Supply (-3.0V)
I Switch 3
I Switch 2
I Switch 1
* Note: S1,S2,S3,VDD terminals have two pads on both sides of the chip.
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 1.0
2000.12.31
4
4페이지 Silan
Semiconductors
SC3788
SETTING SEQENCE AND SWITCH OPERATION
Basic watch
Chronograph
Alarm time setting
Time setting
S1.S2
AM
11:3632
S2
S1
6:25 P
Alarm time
7:26 A
Calender
(Note 1)
S3 S3
0:0000
S3 Select 12/24 H
S3 Alarm & Chime
ON/OFF
S3 Select 12/24 H
S2 Select(Mo/Date) or
(Date/Mo)
AM
PM
Full segment display and
Sound demo
S3
Chronograph
Reset
Operation
S1
Start
0:0000
S1
S2
Stop
2:3225
S2 S2
S1
5:2010
S2
S3
S3
S2
+1H
6:25 P
S1 S2+Min
S3 (Note 2) S2+30s
S3
AM 11:3700
S1 S2+1Min
8:50 P
S1
S3
AM 11:3703
S1 S2+1H
S3
AM 11:46 A
S2+1M
5 26 A
S1 S2+1D
8 26 A
S1 S2+1DW
8 19 A
S1
S1 S2+1M
26 5 A
S3
S1 S2+1D
26 8 A
S3
S1 S2+1DW
19 8 A
S1
S3
2:3225
Lap
2:3225
Stop Lap
Note:
1. In basic watch or chronograph mode, when S3 switch depressed continuously for 1-2 second, the mode changes
to alarm time setting.
2. In alarm time setting mode, after S1 or S2 switch is operated, the mode changes back to basic watch mode.
3. Depressing S2 switch for time setting:
a. +1 advance per pushing
b. when S2 switch depressed continuously for 1—2 second, the digit will be advanced +8 per second.
4. mark is shown that the digits or marks are flashing at 2 Hz.
5. In chronograph and alarm setting modes, 7-day flags show the following respectively:
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 1.0
2000.12.31
7
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부품번호 | 상세설명 및 기능 | 제조사 |
SC3788 | SIX DIGITS MULTIPLEXED LCD WATCH CMOS IC | Silan Semiconductors |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |