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SC3414 Schematic ( Datenblatt PDF ) - Silan Semiconductors

Teilenummer SC3414
Beschreibung 1.5V 10/12 DIGIT CALCULATOR CIRCUIT
Hersteller Silan Semiconductors
Logo Silan Semiconductors Logo 



Gesamt 13 Seiten
		
SC3414 Datasheet, Funktion
SC3414
1.5V 10/12 DIGIT CALCULATOR CIRCUIT
DESCRIPTION
The SC3414 is a single-chip LSI CMOS calculator with 12-digits 2-
memory or 10-digits 2-memory. SC3414 can drive the liquid crystal
display (LCD) with single power supply. Single power supply
operation, wide operating voltage and lower power consumption make
it suitable for 1.5V solar battery operated calculator. Beside SC3414
can be selected as Auto Power OFF or Manual Power OFF with Lock
Key. It also can be selected as Memory Hold or Clear at Power OFF.
50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35
52
53
54
55
56
57
58
59
60
61
62
63
64
1
23 4
34
33
32
31
30
29
28
27
26
25
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18
5 6 7 98 9 10 11 12 13 14 15 16 17
FEATURES
SC3414 chip topography
* Display: 12-digit or 10-digit (selectable with a pin programmable)
of data, 1-digits of sign, error, memory load symbol.
* Algebraic mode
* Complementary output buffer for direct
driving of liquid crystal display
* Standard 4 function (addition, subtraction, multiplication, division).
* Memory and Grand total calculation.
* Memory overflows indicating.
* Result overflow, indicating during
* Accumulating GT memory register with count up (down) item
counter.
calculation (most function key are
* Automatic percentage operation with add-on discount.
locked as it happened).
* Keyboard encoding internal to chip.
* Automatic delta percentage, mark-up and markdown operations.
* Square root.
* Automatic power on clear.
* Constant calculation.
* Wide supply voltage range (1.1 to
1.8V)
* Chain calculation.
* Change sign.
* Very low power consumption.
* Floating point (selectable with a switch).
* Floating minus.
* Key roll over function (2 keys).
* Fixed point ("0", "1", "2", "3", "4", or "6" selectable with a switch).
* Adding point mode (selectable with a switch).
* Oscillator/clock generator internal to
* Rounding switch (rounding up, down and off).
chip.
* Trailing zero suppression.
* Registration overflow, indicating too
* Function on display, commas for thousands.
many digits are entered (the most
significant digit is protected).
* Memory and GT memory contents indicator, turned with nonzero
in the memory and GT memory.
ABSOLUTE MAXIMUM RATING
Characteristics
Supply Voltage
Input Voltage
Storage temperature
Operating Temperature
Symbol
VDD - VSS
VIN
TSTG
TOPT
Value
-0.3 ~ +2.0
-0.3 ~ VDD + 0.3
-55 ~ +125
0 ~ + 50
Unit
V
V
°C
°C
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http: www.silan.com.cn
REV:1.1 2004.08.03
Page 1 of 13






SC3414 Datasheet, Funktion
SC3414
B). Keyboard Description
a).Equal Key (=)
i).Performs Keyed-in operation and maintains that operation for possible use.
ii).Establishes power/reciprocation calculation.
b).Multiplication Key (×)
i).Enters multiplicand.
ii).Performs previous operation and displays result.
c).Division Key (÷)
i).Enters dividend.
ii).Performs previous operation and displays result.
d).Addition Key (+)
i).Conditions machine for an addition.
ii).Performs previous operation and displays result.
e).Subtraction Key (-)
i).Conditions machine for a subtraction.
ii).Performs previous operation and displays result.
f).Percent Key (%)
The purpose of the percent key is to allow for calculation of add-on and discount. Determination of add-on
requires the principal amount to be the first entry followed by the "+" or "X" key, with the percentage being
the second entry. Depression of the percent key yields the amount to add on, such as tax or interest.
Depression of the "=" key adds this amount to the principal.
g).Change Sign Key (+/-)
Pushing the "+/-" key twice in succession causes the corresponding sign to appear and disappear. During
digit entry, this function changes he sign of the entered factor.
h).Power On/All Clear Key (ON/AC)
i).First push power-on displays "0".
ii).In the middle of a digit entry, a second push will clear all operating register).
i)Clear Entry/Clear Key (CE/C)
i).During the digit entry, the first depression will clear the entry register. And display the previous enter
number
again.
ii).The second push will clear all registers.
j).Clear Entry Key (CE)
During the digit entry will clear the entry register and display number "0".
k).Square Root Key (Ö )
Extracts the square root of a positive number displayed in the entry register.
l).Memory Plus Key (M+)
i). Adds the current display to the contents of memory.
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http: www.silan.com.cn
REV:1.1 2004.08.03
Page 6 of 13

6 Page







SC3414 pdf, datenblatt
SC3414
(Continued)
Pin No.
Symbol
X
Y Pin No.
16 A11 865 -1235 48
17
C10
1000
-1235
49
18
B10
1100
-1015
50
20 A10 1100 -880 52
21
C9
1100
-745
53
22
B9
1100
-610
54
23
A9
1100
-475
55
24
C8
1100
-340
56
25
B8
1100
-205
57
26 A8 1100 -70 58
27 C7 1100 65 59
28
B7
1100
200
60
29
A7
1100
335
61
30
C6
1100
470
62
31
B6
1100
605
63
32
A6
1100
740
64
Note: The original point of the coordinate is the die center.
Symbol
COM3
COM2
COM1
K14
K13
K12
K11
K10
K9
K8
K7
K6
K5
K4
K3
K2
X
-750
-890
-1030
-1050
-1050
-1050
-1050
-1100
-1100
-1065
-1065
-1065
-1065
-1065
-1065
-1065
Y
1240
1240
1240
895
745
605
455
320
175
35
-110
-255
-390
-545
-675
-830
HANDLING MOS DEVICES:
Electrostatic charges can exist in many things. All of our MOS devices are internally protected against
electrostatic discharge but they can be damaged if the following precautions are not taken:
Persons at a work bench should be earthed via a wrist strap.
Equipment cases should be earthed.
All tools used during assembly, including soldering tools and solder baths, must be earthed.
MOS devices should be packed for dispatch in antistatic/conductive containers.
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http: www.silan.com.cn
REV:1.1 2004.08.03
Page 12 of 13

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