SILAN SC3449

SC3449
PROGRAMMABLE CALCULATOR WITH 10-BIT DUAL DISPLAY
DESCRIPTION
The SC3449 is a monolithic CMOS circuit for scientific calculators,
having the basic calculation, the memory calculation, fraction calculation,
percentage calculation, scientific function calculation, statistics back to
return to compute, degree, cent, second calculation etc. ,and you can
directly press the key according to the sequence of the formulas, while
the calculators will automatically operate in terms of the algorithm. Using
a 3V power supply it can display ten arithmetic figures, 12 characters
composing of lattice, and the state mark of the calculation. The
calculator can turn off by itself.
FEATURES
* Monolithic CMOS structure
ORDERING INFERMATION
* Scientific operation
Device
Package
* Statistic operation
SC3449
DIE
* Fraction operation
* Coordinate transform
APPLICATIONS
* Conversion and operation between Decimal and hex
* Editing input operation
* Science function calculators
* Independent memory M
* Memories A, B, C, D, E, F, X, Y
* Producing stochastic numbers
* Register “ANS”for final answers
* 3V typical power supply
* 43uA typical power dissipation
* 32k×8bit built-in large capacitance program ROM
* Embedded microprogramming control
* Showing the electricity-saving mode
* Turnoff automatically
* 83-pin COB package
* Calculation range: ± 10-99~±9.999999999×1099
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SC3449
BLOCK DIAGRAM
ABSOLUTE MAXIMUM RATINGS
Characteristics
Symbol
Rating
Unit
DC Power Supply
VDD
<6
V
Input Voltage
VIN
VDD + 0.5
V
-0.5
Operation Temperature
Tamb
0 ~ +60
°C
Storage Temperature
TSTO
-50 ~ +150
°C
Note: Error or device damaging will occur when the value is over these absolute maximum ratings. Normal
operation parameter is to see AC/DC electrical parameter.
DC ELECTRICAL CHARACTERISTICS (Tamb = 25 °C, VDD = 3 V)
Characteristics
Symbol
Operating Voltage
VDD
Operating Current
IOP
Test Condition
2 batteries
FCPU = 500KHz @ 3V,no keypress
VDD = 3V, 32768Hz OFF,
Min.
Typ.
Max.
Unit
2.4
-
3.6
V
-
35
-
µA
-
0
0.1
µA
standby Current
ISTBY
Input High Level
VIH
VDD = 3V
2.0
-
-
V
Input Low Level
VIL
VDD = 3V
-
-
0.8
V
Output High Current (PA5 - 0)
IOH
-
1.0
-
mA
Output Sink Current (PA5 - 0)
IOL
-
-1.0
-
mA
ROSC OFF
VDD = 3V
VOH = 2V
VDD = 3V
VOL = 1V
(To be continued)
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SC3449
(Continued)
Characteristics
Symbol
Output High Current (PA7 - 6)
IOH
Output Sink Current (PA7 - 6)
IOL
Test Condition
Min.
Typ.
Max.
Unit
-
2.5
-
mA
-
-2.5
-
mA
VDD = 3V
VOH = 2V
VDD = 3V
VOL = 1V
Oscillator Resistor
Rosc
FCPU = 500KHz @ 3V
-
350
-
KΩ
CPU Clock frequency
FCPU
VDD = 3V
-
-
1.0
MHz
SEG39
SEG38
SEG37
SEG36
SEG35
SEG34
SEG33
SEG32
SEG31
SEG30
SEG29
SEG28
SEG27
SEG26
SEG25
SEG24
SEG23
SEG22
SEG21
SEG20
SEG19
PIN CONFIGURATION
83 82 81 80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63
SEG18
1
62
SEG40
SEG17
2
61
SEG41
SEG16
3
60
SEG42
SEG15
4
59
SEG43
SEG14
5
58
SEG44
SEG13
6
57
SEG45
SEG12
7
56
SEG46
SEG11
8
55
SEG47
SEG10
9
54
SEG48
SEG9
10
53
SEG49
SEG8
11
52
VSS
SEG7
12
51
SEG50
SEG6
13
50
SEG51
SEG5
14
49
SEG52
SEG4
15
48
SEG53
SEG3
16
47
SEG54
SEG2
17
46
SEG55
SEG1
18
45
SEG56
COM1
19
44
SEG57
COM2
20
43
SEG58
SEG59
SEG60
COM6
COM7
COM8
PA7
PA6
PA5
PA4
PA3
PA2
PA1
PA0
X32I
X32O
RESET
ROSC
VDD
COM5
COM4
21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42
COM3
TEST
SC3449
PIN DESCRIPTION
Pin No.
Pin name
Pin description
25
VDD
Power supply input
52
VSS
Ground input
27
RESET
System reset input (internal pull-up) , low active
(To be continued)
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(Continued)
Pin No.
Pin name
Pin description
21
TEST
Testing input (internal pull-down) , high active
29
X32I
32.768KHz crystal oscillator input[note]
28
X32O
32.768KHz crystal oscillator output
26
ROSC
R oscillator input, connect to VDD by a resistor
37 ~ 30
PA7 ~ 0
38 ~ 40
COM8 ~ COM6
24 ~ 22
COM5 ~ COM3
20 ~ 19
COM2 ~ COM1
41 – 51
SEG60 ~ SEG50
53 – 83
SEG49 ~ SEG19
1 - 18
SEG18 ~SEG1
Input/output port
LCD common output
LCD segment output [note]
Note: The 32kHz crystal oscillation of the chip is gained by Rosc frequency detaching, therefore no need to add a
32768Hz crystal oscillator outside, the pin X32I should attach to Vss, pin X32O hang in the air.
The CMOS chip has already enacted seg8
seg1 to input by reusing the keys simultaneously. That is
besides the LCD display, it can also be as input keys combining with Pa7~Pa1.
FUNCTION DESCRIPTION
1. Calculator function
1 LCD display
Screen with dual row display. See the LCD display screen sketch map on the seventh section.
The first row shows the formulas that are input by 6*5 lattice display.
The second row shows the calculating results.
The bottom shows the mark of the calculating state.
2 Calculation mode
Application
Mode name
Mode directional symbol
Calculation mode
General calculation
COMP
Standard tolerance calculation
SD
SD
REG
REG
Degree
DEG
D
Radian
RAD
R
Centigrade
GRA
G
Regression calculation
Angle unit mode
Display mode
Exponent display (cancel the decimal fraction
NORM1
(FIX) and efficient digits enactment (SCI))
NORM2
Decimal digits enactment
FIX
Fix
Efficient digits enactment
SCI
Sci
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SC3449
Note:
Ÿ Calculation mode directional symbol will show at the bottom of the display screen.
Ÿ General computing (COMP), standard tolerance calculation (SD) and regression calculation (REG) can be
used together with the angle unit mode.
Ÿ You should check the actual calculation and angle mode to see whether they are according with the
requirement every time before a calculation.
3. Input limit
The storage area used to memorize the calculation program can memory 79 steps. When input the 73rd step,
the cursor will change from “_”to ” ”. This indicates the enacted storage capacity area is not enough. And if you
need to input more things, please divide the calculation into two or more operation section.
4. Input error revising
Ÿ Use
or
to move the cursor to the place where you want to revise.
Ÿ Use DEL to remove the numbers or functions at the present cursor.
Ÿ Press SHIFT INS and the cursor will flicker “[ ]”, that is to say it has already enters the inserting state. In this
state, the input characters will insert the place where the present cursor is.
Ÿ Press
,
, SHIFT INS or
, the cursor will come back to the common state from the inserting state.
5. Recurrence function
Ÿ Press
or
to show the last calculation in the display interface, and you can amend the content of the
formulas to calculate over again.
Ÿ The content of the recurrence memory won’
t be cleared if you press the key AC. So you can also make use
of the last calculation result even you press the key AC.
Ÿ It will clear the recurrence memory every time when to begin a new calculation to change the calculation
state or shut off the power supply.
6. Error indicator
When the calculation error appears, press
or
and the cursor will stay where the error is.
7. Exponent display method
The calculator shows ten digits at most. When above ten digits, it will automatically use the exponent display
method. For decimal fraction, you can choose one from the two methods to appoint when to use the exponential
form. Press MODE MODE MODE 3 1 (or 2 ) to choose form NORM1or NORM2.
Ÿ NORM1
When use NORM1, for the integer above 10 digits or the decimal fraction digits above 2, it will adopt the
exponential form.
Ÿ NORM2
When use NORM2, for the integer above 10 digits or the decimal fraction digits above 9, it will adopt the
exponential form.
Ÿ All the examples in the instruction use NORM1 to denote the calculation result.
8. Answer memory
Every time you press the key
after you input the numerical value or formulas, the calculation result will keep
into the answer memory automatically. And press ANS to show the content in the answer memory.
Ÿ The answer memory can memory mantissa of 12 digits and exponent of 2 digits.
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SC3449
Ÿ If the calculation result is wrong (ERROR) after the above operation, the value in the answer memory will not
be updated.
2. Calculation and demonstration
Note: The key-press expression is circled by the outline border and the input number is not.
1. Basic calculation
Use COMP mode to carry out the basic calculation
Arithmetic formula
Example1
3×(5×10
Example2
5×(9 7
-9
Key-press
3 × ( 5 EXP
5× ( 9
Ÿ The key operation ) before the equal mark
-
Result vision
1.5 -08
9 )
7 )
80.
) can be omitted.
2. Memory calculation
Independent memory
Ÿ The numerical value can be directly kept into the memory, and it can add to the numerical value in the
memory. It can also subtract the numerical value from the memory. The independent memory is convenient
for cumulating the sum.
Ÿ The memory area used by variable M is the same as that used by the independent memory.
Ÿ If you want to clear the numerical value in the independent memory, press SHIFT Mcl
Arithmetic formula
Example
Key-press
or 0 STO M .
Result vision
23 9 32
23
9 STO M
32.
53 6 47
53
6 M+
47.
)45×2 90
45 × 2 SHIFT M-
90.
(sum)
11
RCL M
-11.
Variable
Ÿ The calculator stocks 9 variables(A to F, M, X and Y) that can memory data, constants, calculation results
and other numerical values.
Ÿ Using the operation SHIFT Mcl
you can delete all the data of 9 variables.
Ÿ Using the following operation can delete the data given to some variable: 0 STO
A . The operation will
delete the data of variable A.
Arithmetic formula
Example
Key-press
Result vision
193.2÷23 8.4
193.2 STO A ÷ 23
8.4
193.2÷28 6.9
ALPHA A ÷ 28
6.9
3. Fraction calculation
Fraction calculation
Ÿ Use COMP mode to go along the fraction operation.
Ÿ When the summation of the fraction digits (integer
numerator
denominator semicolon) is above 10 digits,
the calculator will automatically show this numerical value in the decimal fraction form.
Arithmetic formula
Example 1
2
3
Example 2
1
+1
4
2 ab
5
+ 1.6
2
Key-press
1 ab
c
c
3
1 ab
2
1.6
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c
4 ab
Result vision
c
5
2_|7_|15.
2.1
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Ÿ The mixed calculation of fraction/decimal fraction will be shown in the decimal fraction form.
Transform the decimal fraction form to fraction form
Arithmetic formula
Key-press
Result vision
2.75
2.75 → 2
Example
3
ab
4
2.75
c
2_|3_|4.
SHIFT d
11_|4.
c
Transform the fraction form to fraction form decimal fraction
Arithmetic formula
1
Key-press
↔ 0.5
1
2
Example
ab
fraction)
1_|2.
c 2
ab
(Fraction↔Decimal
Result vision
ab
c
0.5
c
1_|2.
Ÿ Please use parenthesis() in combinational arithmetics between function ( A function, B function, power and
root operation etc.)and fraction operator ab/c.
Arithmetic formula
Example 1
Example 2
8
5
Sin8
5
Sin
Key-press
Sin
8 ab
c
5
ab
Sin 8
Result vision
Sin(8_|5)=0.027921638
c
5
(Sin8)_|5=0.02783462
4. Percentage calculation
Ÿ Use COMP mode to go along the percentage calculation
Arithmetic formula
Example 1
Example 2
Calculating the12% of
1500
What percent is 660 of 880
Key-press
Result vision
1500 × 12 SHIFT % =
180.
660 ÷ 880 SHIFT % =
75.
5. Science function calculation
Ÿ Use COMP mode to go along the science function calculation
Ÿ π=3.14159265359
Trigonometric /counter-trigonometric function
Arithmetic formula
Example1
Sin63 52’
41”
Example2
cos(
Key-press
MODE MODE 1
Sin 63
‚
„52
“D”
‚
„41
MODE MODE
rad)
3
cos-1
2
=
2
0.897859012
‚
„
“R”
Cos ( SHIFT π ÷ 3 )
MODE MODE
Example3
Result vision
π
SHIFT cos
-1
0.5
“R”
2÷2
0.785398163
4
Ans ÷ SHIFT π
Example4
tan-10.741
MODE MODE 1
“D”
SHIFT tan-1 0.741
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SC3449
Hyperbolic/counter-hyperbolic function
Arithmetic formula
Key-press
Result vision
Example1
Sinh 3.6
Hyp Sin 3.6
18.28545536
Example2
sinh-130
Hyp SHIFT sin-1 30
4.094622224
Angle unit counterchange
Please press SHIFT DRG
to pick up the menu on the display screen.
D R
G
1
3
2
Press 1, 2 or 3 to choose the angle unit corresponding to the showing numerical value.
Arithmetic formula
Example
Key-press
Transfer 4.25 radian into
MODE MODE 1
degree
4.25 SHIFT DRG
Result vision
4.25r
“D”
2(R)
243.5070629
Common and natural logarithm/inverse logarithm
Arithmetic formula
Key-press
Example1
Log1.23
Log 1.23
Example2
Ln90
Ln 90
Example3
Example5
22026.46579
x
1.5
4
4.49980967
SHIFT e 10
e
10
0.089905111
x
10
Example4
Result vision
SHIFT 10 1.5
31.6227766
2 xy 4
2
16.
Square root cube root root square cube reciprocal factorial stochastic number and pi
Arithmetic formula or
Key-press
requirement
2+ 3x 5
Example1
Example2
5+
3
3
− 27
2
3×
5
3
Result vision
5
5.287196908
(-) 27
3
-1.290024053
1
123 ( = 123 7 )
Example3
7
Example4
123+302
Example5
7 SHIFT
123
x
1.988647795
2
123
30 x
1023.
3
3
12 x
12
1728.
1
Example6
1
−
3
Example7
1
3 x-1
4 x-1
12.
4
8!
8 SHIFT x!
number between 0.000
40320.
(For example, the result
Producing a stochastic
Example8
x-1
SHIFT Ran
every time is different)
and 0.999
Example9
3π
0.526
3 SHIFT π
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SC3449
Decimal digits
efficient digits RND
Arithmetic formula or
Key-press
requirement
Example1
200÷7×14 400
200 ÷ 7 × 14
(appointed 3 digits
MODE MODE MODE 1 3
decimal faction)
(Calculating the internal
data are unchangeable)
Result vision
400.
400.000
28.571
200 ÷ 7
Fix
400.000
× 14
Going along the same calculation by appointed decimal digits.
Arithmetic formula or
Key-press
requirement
Result vision
200 ÷ 7
Example2
28.571
(Calculating the internal
SHIFT Rnd
rounding)
× 14
28.571
399.994
Ÿ Pressing MODE MODE MODE 3 1 can delete the enactment of the decimal digits (FIX)
Arithmetic formula or
Key-press
requirement
Result vision
1÷3
Example3
Showing the calculation
result by two efficient
3.3-01
MODE MODE MODE 2 2
1÷3
Sci
digits (SCI 2)
Ÿ Pressing MODE MODE MODE 3 1 can delete the enactment of the efficient digits.
Engineering calculation
Arithmetic formula
Example1
Example2
Converse 56, 088 meter
Key-press
56088
Result vision
56.088 03
ENG
to kilometer
Converse 0.08125 gram
0.08125
81.25 -03
ENG
to milligram
Coordinate transform
Ÿ The result will assign the variable E and F automatically
Arithmetic formula or
Key-press
requirement
Transfer the polar
Example1
coordinates (r
2, θ=60°)
to right-angle coordinates
(x, y). (DEG mode)
SHIFT Rec( 2
1.
Note
x
D
RCL F
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Result vision
1.732050808
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SC3449
Ÿ Pressing RCL E , RCL F can make the numerical value replace the present showing numerical value.
Arithmetic formula or
Key-press
requirement
Transfer the right-angle
Example2
coordinates (1,
3
) to
polar coordinates(r, θ).
(RAD state)
3 )
Pol( 1 ,
Result vision
Note
2.
r
R
RCL F
θ
1.047197551
Ÿ Pressing RCL E , RCL F can make the numerical value replace the present showing numerical value.
Permutation
Arithmetic formula or
Key-press
requirement
Result vision
Using numbers from 1 to 7 can
compose how many different four
Example
digits numbers, and the value of
7 SHIFT nPr 4
840.
them can not repeat.(1234 is
admitted, but 1123 is not)
Combination
Arithmetic formula or
Key-press
requirement
Result vision
Take 4 things among 10, asking
Example
how many combinations can be
10 nCr 4
210.
composed.
6. Statistics calculation
Standard deviation (SD mode)
Ÿ Press MODE 2 to enter the SD state, and go along the statistics calculation using standard deviation.
Ÿ Please press SHIFT Scl
at first without fail to clear the statistics memory before input the data.
Ÿ The input data are used to calculate the value of n,
2
x,
x, x , σn, σn-1, you can use the demonstrational
operation in the right diagram to calculate.
RCL A
x2
RCL B
x
RCL C
SHIFT x
n
x
SHIFT xσn
σn
HIFT xσn-1
σn-1
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SC3449
Arithmetic formula or requirement
Answer for the data σn-1, σn, x , n, x,
2
x : 55, 54, 51, 55, 53, 53, 54, 52
Example
Key-press
Result vision
55 DT 54 DT 51 DT 55 DT
52.
53 DT DT 54 DT 52 DT
SD
(Sample standard deviation σn-1)
SHIFT xσn-1
1.407885953
(Collectivity standard deviationσn)
SHIFT xσn
1.316956719
(Arithmetic average value x )
SHIFT x
(The numbers of the datan)
RCL C
(Sum
RCL B
427.
RCL A
22805.
x)
(square sum
x2)
53.375
8.
Notice when input data:
Ÿ Pressing DT DT can input the same data twice.
Ÿ Using SHIFT ; you can input the same data time after time. For example, if you want to input 100 ten
times, you can press 110 SHIFT ; 10 DT
Ÿ The above result can be required in arbitrary order not necessarily in the above order.
Ÿ If you need to delete the just inputting data, you can press SHIFT CL .
Regression calculation (Regression REG state)
Ÿ Press MODE 3 to enter the regression (REG) state, and then choose one type among the following
regression types to go along the regression calculation.
1 : Linearity regression
2 : Logarithm regression
3 : Exponent regression
1 : Power regression
2 : Reverse regression
3 : Quadratic regression
Ÿ Please press SHIFT Scl
at first without fail to clear the statistics memory before you input the data.
Ÿ The result of the regression calculation decided by the input numerical value can be take out according to the
demonstrational operation in the following diagram.
2
RCL A
x
RCL B
x
RCL C
SHIFT xσn-1
SHIFT y
xσn-1
y
n
RCL D
y
SHIFT yσn
yσn
RCL E
y
SHIFT yσn-1
yσn-1
RCL F
xy
SHIFT A
Regression coefficient A
RCL M
3
x
SHIFT B
Regression coefficient B
RCL X
xy
2
SHIFT C
Regression coefficient C
RCL Y
x4
SHIFT r
Regression coefficient xˆ
yˆ
2
SHIFT x
x
SHIFT xσn
xσn
SHIFT
SHIFT
xˆ
yˆ
Ÿ Linearity regression
Ÿ The linearity regression formula is y A B x
Ÿ Example: the air pressure: air temperature
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Go along the linearity regression calculation in the left diagram and answer the constant and relevant
coefficient. Then estimate the air pressure when the temperature is18°C and the air temperature when the air
pressure is 1000 hPa.
Air temperature x
Air pressure y
10°C
1003 hPa
15°C
1005 hPa
20°C
1010 hPa
25°C
1011 hPa
30°C
1014 hPa
Ÿ Please input the data< air temperature x data, air pressure y data> DT according to the following format. DT
Requirement or operation
Example
Key-press
Enter the regression (REG)
MODE 3 1
mode
SHIFT Scl
(Linearity regression)
10 , 1003 DT 15 , 1005 DT
(Clear the memory)
20 , 1010 DT 25 , 1011 DT
(Input data)
30 , 1014 DT
(Regression coefficient A)
SHIFT A
(Regression coefficient B)
SHIFT B
(Correlative coefficient r)
SHIFT r
18 SHIFT
(Air pressure at 18°C)
(Air temperature at 1000hPa)
1000 SHIFT
Result vision
0.
30.
0.56
997.4
0.982607369
1007.48
yˆ
4.642857143
xˆ
Ÿ Quadratic regression
The regression formula of quadratic regression is:
y A B x Cx2
Using the data in the right diagram to go along the quadratic regression and ask for the every regression
coefficient in the formula. Then using this regression formula estimate the value of yˆwhen xi=16 (The estimate
value of y) and the value of xˆwhen (The estimate value of x)
xi
yi
29
1.6
50
23.5
74
38.0
103
46.4
118
48.0
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SC3449
Requirement
Key-press
Enter the regression (REG)
3
MODE 3
mode
Result vision
SHIFT Scl
(Quadratic regression)
0.
29 , 1.6 DT 50 , 23.5 DT
(Clear the memory)
74 , 38.0 DT 103 , 46.4 DT
(Input data)
118.
118 , 48.0 DT
SHIFT A
Example
35.5985693
1.495939412
(Regression coefficient B)
(Regression coefficient C)
(The value of yˆwhen xi=16)
(The value of xˆwhen yi=20)
SHIFT C
16 SHIFT
yˆ
-13.38291065
20 SHIFT
xˆ
47.14556729
SHIFT
(The value of xˆwhen yi=20)
-
6.716296661-03
SHIFT B
(Regression coefficient A)
-
xˆ
175.5872106
Notice when input data:
Ÿ Pressing DT DT can input the same data twice.
Ÿ Using SHIFT ; you can input the same data time after time. For example, if you want to input 20 and 30
five times, you can press 20 , 30 SHIFT ; 5 DT .
Ÿ The above result can be required in arbitrary order not necessarily in the above order.
Ÿ If you need to delete the just inputting data, you can press SHIFT CL.
7. Degree, minute, and second calculation
Ÿ You can use degree(hour), minute and second to go along calculation, and you can also perform
sexagesimal system calculation between minute and second, also can transfer between sexagesimal
system and decimal system.
Arithmetic formula
Transfer the decimal
Example1
number 2.258 to
sexagesimal system
Example2
Key-press
2.258
SHIFT
Perform the calculation
12
12 34’
56”×3.45
3.45
2.258
‚
„
‚
„34
Result vision
‚
„56
‚
„×
2 15 28.8
43 24 31.2
3. The technological instruction relevant to the calculation
When come up against problems
If the result is different from the prospective result, or there appears errors, please carry out the following steps:
1. Press MODE 1 (COMP) state
2. Press MODE MODE
1 (DEG) state
3. Press MODE MODE MODE 3 1 (NORM 1 state)
4. Check the using formula to make sure whether it is right.
5. Enter the right state, calculate again.
If the above operations cannot solve the problem yet, please press the reset key RESET, and all the data in
the calculator will be deleted.
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Error information
After the error information appears, the calculator stop working, then press the key AC to clear the error, or
press
to show the formula and correct the mistakes.
Ma ERROR
The result is over the calculation range of the calculator.
Use a numerical value which is over the input range to go along the functional calculation.
Trying for a unreasonable operation (for example, divide zero, act.)
Stk ERROR
Over the capacity range of the stack memory or the operational son stack memory.
Syn ERROR
Go along the unreasonable mathematical operation.
The operation priority
1. Coordinates transform: Pol (x, y), Rec(r,θ)
2. A type function: x2, x3, x-1, x!,
‘‘
’
You should first input the numerical value and then press the function key in this functional calculation.
3. Power and root xy,
4. a b
x
c
5. Multiplication without multiplicative sign before
6. B type function:
1
3
,
x
π , memory’s name, variable’s name: 2π, 5A, πA act.
x
, log, ln, e , 10 , sin, cos, tan, sin-1, cos-1, tan-1, sinh, cosh, tanh, sinh-1, cosh-1, tanh-
, (-)You should first press the function key and then input the numerical value in this functional calculation.
7. Multiplication without multiplicative sign before the B type function. 2 3 , Alog2 act.
8. Permutation and combination: nPr, nCr
9. ×, ÷
10.
,
Ÿ The calculation with the same PRI according to the right to left order to go along.
For example: e x ln
120 → e x (ln
120)
Other calculation is according to the left to right order.
Ÿ The calculation in the bracket will be first carried out.
Stack memory
The internal operation number stack memory of the calculator has 10 operation levels, and the dictation stack
memory has 24 operation levels. When the calculation is too complex and is over the capacity range of the stack
memory, the stack memory error information (Stk ERROR) will appear.
Turnoff automatically function
Without any operation for 6 minutes, the calculator will turn off by itself, and press AC/ON to renew power
supply.
Input range
Internal digits: 12 digits
Precision: Take ±1 of the tenth number’
s precision as standard.
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Function
sinx/cosx
tanx
Input range
DEG
0≤x ≤4.499999999x1010
RAD
0≤x ≤785398163.3
GRAD
0≤x ≤4.999999999x1010
DEG
The same as sinx other than when x =(2n-1)x90
RAD
The same as sinx other than when x =(2n-1)x π/2
GRAD
The same as sinx other than when x =(2n-1)x100
-1
Sin x
cos-1x
Tan-1x
Sinhx
coshx
0≤x ≤1
0≤x ≤9.999999999x1099
0≤x ≤230.2585092
tanhx
0≤x ≤9.999999999x1099
-1
sinh x
0≤x ≤4.999999999x1099
cosh-1x
1≤x ≤4.999999999x1099
tanh-1x
0≤x ≤9.999999999x10-1
Logx/lnx
0<x≤9.999999999x1099
10x
-9.999999999x1099≤x ≤99.99999999
ex
-9.999999999x1099≤x ≤230.2585092
x
0≤x<1x10100
x
x <1x10100
3
x2
x <1x1050
1/x
x <1x10100; x≠0
x!
0≤x≤69(x is an integer)
nPr
nCr
Pol(x, y)
Rec(r, θ)
0≤n<1x1010, 0≤r≤n (n,r are integers)
1≤{n!/(n-r)!}<1x10100
0≤n<1x1010, 0 ≤ r ≤ n (n,r are integers)
100
1≤[n!/{r!(n-r)!}]<1x10
x , y ≤9.999999999x1049
2
2
99
(x +y )≤9.999999999x10
0≤r≤9.999999999x1099
θ: the same as sinx
a , b, c<1x10100
‚
„
Decimal system↔ sexagesimal system
0°0°0°≤x ≤999999°59°
x>0: -1x10100<ylogx<100
x=0: y>0
y
x
X<0: y=n,
1
2n + 1
(n is a integer)
At the same time -1x10100<ylogx<100
(To be continued)
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(Continued)
Function
Input range
100
y>0: x≠0, -1x10
<1/xlogy<100
y=0: x>0
x
y
Y<0: x=2n+1,
1
(n is a integer
n≠0)
n
At the same time -1x10100<1/xlogy<100
ab
The total digits of the integer
c
10 digits (including semicolon)
x<1x1050, y<1x1050
SD(REG)
numerator and denominator is less than
n<1x10100
xσn, yσn, x , y :n≠0
xσn-1, yσn-1, A, B, r: n≠0,1
The precision of a single operation is to the mantissa’
s last effective number’
s ±1. When you operate
continuously (including some internal continuous calculation, such as Xy,
y
x , x!,
3
, nPr, nCr , the calculation
error is accumulated. In addition, it is likely to enlarge the error about the odd dot or inflexion of the function.
Calculation range: P±10-99~±9.999999999×1099, if the absolute value of the input or the last or the midterm
value is less than10-99, this value is regarded as zero in the calculating and the display.
4. LCD PLACEMENT DIAGRAM
LCD display screen
COMMON connection line
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SEGMENT connection line
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TYPICAL APPLICATION CIRCUIT DIAGRAM
The key-press definition is to see the key-press matrix section.
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KEYBOARD MATRIX AND DEFINITION
Key-press input matrix
Key
Pa1
Pa2
Pa3
x!
nPr
Rec(
x-1
nCr
Pol(
←
d/c
Eng
a_b/c
A
← B
Pa4
Pa5
Pa6
Pa0
x
Key1
Key2
Key3
Key4
(-)
STO
RCL
3
x2
C
-1
Sin
Hyp
Sin
r
X
(
)
D
10x
ex
Log
Ln
-1
-1
Cos
Mcl Scl
xy
x3
E
Cos
Y
Tan
AC / ON
OFF
F
Tan
M- M
M+
DT CL
Key5
Key6
Key7
S8
A
B
C
INS
7
8
9
DEL
MODE
y
yσn
yσn-1
4
5
6
×
÷
x
xσn
xσn-1
xˆ
yˆ
1
2
3
Rnd
Ran#
π
DRG
EXP
ANS
0
.
ALPHA
←
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%
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SC3449
CHIP TOPOGRAPHY
83
82
81
80
79
78
77
76
75
74
73
72
71
70
69
68
67
66
65
64
63
62
1
61
2
60
3
59
4
58
5
6
57
7
56
8
55
9
54
10
53
11
52
12
51
13
50
14
49
15
48
16
47
17
46
18
19
45
20
44
21
43
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
CMOS chip dimension: 3.33X3.44(mm2)
Note: The substrate is connected to GND.
THE COORDINATE OF THE KEY
Pad No.
Symbol
X
Y
Pad No.
Symbol
X
Y
1
SEG18
1544.2
-1364.9
43
SEG58
-1542.4
1417.3
2
SEG17
1544.2
-1223.9
44
SEG57
-1542.4
1271.0
3
SEG16
1544.2
-1082.0
45
SEG56
-1542.4
1124.4
4
SEG15
1544.2
-940.7
46
SEG55
-1542.4
978.2
5
SEG14
1544.2
-799.3
47
SEG54
-1542.4
832.0
6
SEG13
1544.2
-656.5
48
SEG53
-1542.4
685.3
7
SEG12
1544.2
-515.0
49
SEG52
-1542.4
539.2
8
SEG11
1544.2
-373.5
50
SEG51
-1542.4
384.0
9
SEG10
1544.2
-232.5
51
SEG50
-1542.4
228.6
(To be continued)
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SC3449
(Continued)
Pad No.
Symbol
X
Y
Pad No.
Symbol
X
Y
10
SEG9
1544.2
-90.8
52
VSS
-1542.4
78.7
11
SEG8
1544.2
63.4
53
SEG49
-1542.4
-74.0
12
SEG7
1544.2
200.0
54
SEG48
-1542.4
-226.3
13
SEG6
1544.2
335.0
55
SEG47
-1542.4
-379.0
14
SEG5
1544.2
470.0
56
SEG46
-1542.4
-531.6
15
SEG4
1544.2
604.8
57
SEG45
-1542.4
-684.0
16
SEG3
1544.2
739.6
58
SEG44
-1542.4
-836.4
17
SEG2
1544.2
874.6
59
SEG43
-1542.4
-988.8
18
SEG1
1544.2
1009.4
60
SEG42
-1542.4
-1141.4
19
COM1
1544.2
1144.2
61
SEG41
-1542.4
-1293.0
20
COM2
1544.2
1279.0
62
SEG40
-1542.4
-1445.7
21
TEST
1544.2
1442.0
63
SEG39
-1542.4
-1596.6
22
COM3
1394.2
1598.4
64
SEG38
-1357.6
-1596.6
23
COM4
1229.4
1598.4
65
SEG37
-1213.6
-1596.6
24
COM5
1066.8
1598.4
66
SEG36
-1069.5
-1596.6
25
VDD
900.6
1598.4
67
SEG35
-925.6
-1596.6
26
ROSC
750.7
1598.4
68
SEG34
-781.4
-1596.6
27
RESET
609.7
1598.4
69
SEG33
-637.7
-1596.6
28
X32O
468.2
1598.4
70
SEG32
-493.7
-1596.6
29
X32I
328.2
1598.4
71
SEG31
-349.5
-1596.6
30
PA0
187.2
1598.4
72
SEG30
-205.3
-1596.6
31
PA1
43.9
1598.4
73
SEG29
-55.1
-1596.6
32
PA2
-99.4
1598.4
74
SEG28
89.4
-1596.6
33
PA3
-242.3
1598.4
75
SEG27
233.7
-1596.6
34
PA4
-385.6
1598.4
76
SEG26
378.0
-1596.6
35
PA5
-529.0
1598.4
77
SEG25
522.6
-1596.6
36
PA6
-672.6
1598.4
78
SEG24
671.8
-1596.6
37
PA7
-815.6
1598.4
79
SEG23
819.0
-1596.6
38
COM8
-959.0
1598.4
80
SEG22
962.7
-1596.6
39
COM7
-1103.5
1598.4
81
SEG21
1106.7
-1596.6
40
COM6
-1248.8
1598.4
82
SEG20
1250.4
-1596.6
41
SEG60
-1392.0
1598.4
83
SEG19
1394.2
-1596.6
42
SEG59
-1542.4
1598.4
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Page 21 of 23
Note: the origin of the coordinate is in the middle of the chip.
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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.
Note Silan reserves the right to make changes without notice in this specification for the improvement of the design and performance.
Silan will supply the best possible product for customers.
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