Integral IZ1242C Scientific 10 digits lcd calculator Datasheet

IZ1242C
SCIENTIFIC 10 DIGITS LCD CALCULATOR
The IZ1242C is the CMOS LSI for 10-digit display and the complete single chip for scientific
calculator with 56 programmed functions.
FUNCTIONS
FEATURES
• Six operations
- four standard functions (+, -, ×, ÷ )
x
-y
- √y
- auto-constant
- parenthesis
- percentage
• Memory calculation
- independent single memory (× → M, RM, M+)
• Four operations complex number calculation
• 1-variable functions
- trigonometric and arctrigonometric function
- hyperbolic and archyperbolic function
- factorial
- reciprocal and square
- square root and cube root
- time conversions
- angular mode conversion
• 2-variable functions
- polar-rectangular coordinate conversion
• Statistics calculations
- number of sample (n)
- average (×)
- total of all data (Σ ×)
2
- total of square of all data (Σ x )
- 2 kinds of the standard deviation (S, σ)
• Binary, octal, decimal and hexadecimal
number
calculations
- mutual conversions and calculations of binary,
octal,
decimal, and hexadecimal numbers
• Display conversion
- conversion and setting of floating and
engineering displays
• Display
-10 display digits plus negative code digit
- scientific and engineering displays
- 8 mantissa digits plus 2 exponent digits plus 2
negative code digits
• 14 kinds of special display
Memory
Minus
Error
2nd
Function
Hyperbolic
Degree
Gradient
Parenthesis
Binary mode
Octal mode
Hexadecimal
mode
Complex number
mode
RAD
STAT
Radian
Statistic
calculation mode
• The minus sign of the mantissa is floating minus
• The arithmetic key operation has the same
sequence
as the mathematical equation, 6 pending
operations
are allowed and ( ) are up to continuous 15
levels
• Mutual conversion and calculation in arithmetic
among binary, octal, decimal and hexadecimal
numbers
• One independent accumulating memory
• It is possible to convert and fix the display
number
system by the F → E key
• It is possible to specify decimal part digits by the
TAB key
• Direct drive for LCD (1/3 prebias, 1/4 duty)
• Automatic power off (about 7.5 minutes)
• Low power consumption
VDD = 3.0V single power supply
• Bare chip available
• Direct type
M
E
2ndF
HYP
DEG
GRAD
(
)
BIN
OCT
HEX
CPLX
o
ABSOLUTE MAXIMUM RATINGS (Ta = 25 C)
Characteristic
Terminal Voltage
Operating Temperature
Storage Temperature
Symbol
Value
- 0.3 ~ + 3.3
- 0.3 ~ VDD + 0.3
0 ~ + 40
- 55 ~ + 125
VDD
VIN
Topr
Tstg
* Voltage greater than above may damage the circuit
1
Unit
V
V
o
C
o
C
IZ1242C
ELECTRICAL CHARACTERISTICS (Ta = 25oC, VDD = 3.0V, VSS = 0V unless otherwise specified)
Characteristic
Symbol
Operating Voltage
Input Voltage (K18 ~ K11)
High Output Voltage
(K18, K14, K12)
Output Voltage (LCD,
COM)
Low Output Voltage (K11)
Middle Output Voltage
(LCD, COM)
Key Pull Down
Resistance (K11)
Key Pull Up Resistance
(K18, K14, K12)
OSC Frequency
Frame Frequency
Min
Typ
Max
Unit
VDD
VIH
VIL
VOH
2.5
VDD - 0.5
VSS
VDD - 0.2
3
V
VDD
3.4
VDD
VSS+0.5
VDD
VOH
VOL
VOL
VDD
VSS
VSS
2/3VDD
1/3VDD
50
VDD
VSS +0.2
0.2
2/3VDD +0.2
1/3VDD +0.2
70
70
Rpd
Vout = 0V
VDD -0.2
VSS
VSS
2/3VDD -0.2
1/3VDD -0.2
30
Rpu
Vout VDD
30
50
Fdis
Stand-by
VDD = 3V
Operating
VDD = 3V
Stand-by
VDD = 3V
Display is off
VDD = 3V
Stand-by
VDD = 3V
Operation
VDD = 3V
30
45
VOM
Fopr
Ff
IOFF
Supply Current
Test
Condition
IDIS
IOPR
200
110
280
180
V
V
V
V
V
KΩ
KΩ
KHz
Hz
1
3
20
35
70
120
µA
BASIC SPECIFICATION
Number of display digits
• 10-digit display and 14 kinds of special displays
• Engineering display
• Max mantissa 8 digits plus exponent 2 digits plus each negative code digit
• Normal display
Max 10 mantissa digits plus 1 negative code 6 digit.
It is possible to specify the number of 0 to 9 digits below the decimal place by assignment of the
decimal digit.
Classification of operating mode
The following 6 types of operation mode are set by the 2ndF key and below keys:
2ndF
2ndF
STAT
CLPX
2ndF
2ndF
2ndF
2ndF
- BIN
- OCT
- HEX
- DEC
: Statistic calculation mode set
: Complex number calculation
mode set
: Binary mode set
: Octal mode set
: Hexadecimal mode set
: Decimal mode set
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IZ1242C
Kinds of keys and classification of the multi-functions for all touch keys
2ndF
DRG
DRG
archyp
hyp
sin
sin
D
DEG
A
EXP
-1
e
X
xy
ln
yx
7
E
B
1
2
0
+/-
ON/C
tan
tan
TAB
F E
n!
CE
10 F
log
3x
C
rθ
a
1/x
x2
xy
b
CLPX
-1
X
x
5
OFF
cos
cos
-1
8
4
STAT
POWER
X
(
Y
BIN
9
OCT
6
HEX
3
RND
DEC
+
n
x
X
s
)
x2
M
RM
DATA CD
M+
%
=
The condition during calculation
No key input is allowed and no data is displayed during calculation.
a.
b.
Display method
Set number and result of operation are displayed in the right margin, minus floating.
Display of decimal number operation results.
Display is made according to the display format that has been set by the F ↔ E key.
• Floating mode
10
100
10 ≤ | x | ≤ 10
-99
10 ≤ | x | ≤ 10-9
0 and 10-9 ≤ | x | ≤
1010
: Exponent display
: Exponent display
: Floating display
• Engineering mode
0 and 10-99 ≤ | x | ≤ 10100 (all ranges); Exponent display.
The F ↔ E key also converts the display format of a displayed numerical value simultaneously
with the display format setting.
At the same time, the number of digits below the decimal point of the above modes follows the
display format assigned by the 2ndF and F ↔ E keys.
Further, in the same manner as the F ↔ E key, the conversion is also takes place simultaneously
with the display format setting.
When the number of digits is specified, the last digit displayed is a rounded number, and when
there is no specification of the number of digits, the last digit displayed is a cut number.
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IZ1242C
Example:
c.
Negative numbers are not displayed with the minus symbol “-” but are displayed in
hexadecimal, octal, and binary two’s complements.
d.
Display style and special display
• Display style
• Special display
M
E
e.
Examples of display
• Floating of –6000 1/x; TAB=7
• Same as above, engineering display
• Error display
DEG
E
a.
Protection
Memory overflow protection
If the overflow occurs in the memory calculation, the data before the calculation is retained.
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IZ1242C
b.
Statistical overflow protection
If the overflow occurs in the statistical calculation, the data before the calculation is retained.
The number of digits of the internal retained data.
The number of digits of the mantissa of the displayed data is a maximum of 10 digits, but the
available data for successive calculations is the retained data.
The number of digits of the mantissa of the internally retained data is as follows:
Data input
Arithmetic
Engineering function.
Statistical function
Complex number
function
Memory calculation.
Number of random
Maximum
Maximum
10 digits
10 digits
Maximum
3 digits
Auto clear
When the power supply is suddenly turned on an auto clear routine is executed to initialize as
DEC mode, no TAB, floating and DEG modes.
Power off function
Auto power off
About 7.5 minutes after operation is ended by pressing the key, the power supply is turned off.
b.
OFF
Pressing this key will stop the oscillator (Memory safe guard).
c.
ON
Pressing this key will wake the oscillator and initialize
a.
OPERATION MODE
Operational mode
DEC
Mode
BIN
OCT
HEX
STAT
CPLX
Operation
6 Operation
STAT
CLPX
DATA setting
CE
Memory
Display conversion
P – R conversion
Random
Function
Angular conversion
4 Operation +, -, ×, ÷, =
Power yx, x√y
Parenthesis ( )
Constant calculation
Percentage calculation
Statistical calculation
CLPX calculation
Input a, b
Numeric input 0, 1
Numeric input (2 – 7)
Numeric input 8, 9
Hex input A – F
• , Exp
+/Shift key
Memory calculation
F ← E, TAB
P→
R→P
RND
1 variable function
DRG, DRG
5
0
0
0
0
0
x
x
0
0
0
0
x
0
0
0
0
0
0
0
0
x
0
0
x
x
x
x
0
x
x
x
x
0
0
0
0
x
x
0
x
0
0
x
x
x
x
0
0
x
x
x
0
0
0
0
x
x
0
x
0
0
x
x
x
x
0
0
0
0
x
0
0
0
0
x
x
0
0
x
0
0
0
x
x
0
0
0
x
0
0
0
0
0
x
x
0
x
x
x
x
x
0
0
0
0
0
x
0
0
0
0
0
x
0
0
0
0
x
x
x
x
x
x
x
x
x
0
0
0
0
0
0
IZ1242C
The calculation is always shifted to a specified mode by mode keys
A Mode
B Mode
A
B
DEC
DEC
BIN
OCT
HEX
STAT
CPLX
NOP
DEC
Conversion
DEC
Conversion
DEC
Conversion
BIN
BIN
Conversion
NOP
BIN
Conversion
BIN
Conversion
OCT
OCT
Conversion
OCT
Conversion
NOP
OCT
Conversion
HEX
HEX
Conversion
HEX
Conversion
HEX
Conversion
NOP
STAT
Display
Clear
Display
Clear
Display
Clear
Display
Clear
Display
Clear
Display
Clear
Display
Clear
Display
Clear
DEC
Conversion
State clear
BIN
Conversion
State clear
OCT
Conversion
State clear
HEX
Conversion
State clear
NOP
DEC
Conversion
State clear
BIN
Conversion
State clear
OCT
Conversion
State clear
HEX
Conversion
State clear
Display
Clear
NOP
CPLX
Display
Clear
State clear
NOP: No operation
KEY DEFINITIONS
1.
2ndF
This is the key for specifying the second function.
When this key is pressed, the special display «2ndF» lights. When this key is pressed twice the
second function mode is released.
2.
DRG
DRG
a. Pressing this key will change the mode of angle sequentially
and display it.
DE
RA
GRAD
b. Pressing this key after 2ndF key will change the mode of the angle and will convert the
displayed data.
DEG → RAD
RAD →
GRAD
GRAD → DEG
: RAD = DEG × π/180
: GRAD = RAD × 200/π
: DEG = GRAD × 0.9
3. 0 – 9
a.
In setting data in the mantissa section, it is set at the right margin, and the data in more
than 11 digits cannot be input.
b. At the data input against the exponent, the last two numbers are efficients.
4.
•
RND
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IZ1242C
a. The position first pressed has preference, and no input is made to data set in the exponent
section.
b. When pressed as the first set number, it is regarded as 0 and • keys are pressed.
c. Random as a 2ndF.
Pressing this key shall display the random numbers.
The range of random numbers is 0.000 – 0.999.
5.
6.
a.
b.
c.
d.
e.
7.
a.
b.
c.
d.
e.
8.
a.
+/a. In setting data in the mantissa section, this key reverses the code in the mantissa section.
Similarly, for the exponent section, it reverses the code in the exponent section.
b. For the operation result, this key reverse codes in the mantissa section.
+ , - , ×, ÷, =, ( )
When the key operations are performed by these keys according to a numerical
expression, a result of the operation is obtained according to mathematical priorities, priorities
discriminated are:
1) 1 Variable function
2) Expression in ( ): (The most inner expression has priority in case of multiple parentheses)
3) yx , x√y
4) ×, ÷
5) +, Whenever the key is operated, the calculator discriminates the above priorities and holds
the data and operation keys pending as required.
This pending action is possible up to 6 times and 7 or more pending become error.
(Key is accepted only immediately after CE, +, -, ×, ÷, yx, x√y, =, (keys and not
accepted in all other cases.
When this key is accepted, the displayed data is cleared to 0.
When ( key is first accepted, the special display « ( ) » illuminates.
When a parenthesis expression is completed ) and = keys or when it is cleared by the ON/C key,
etc, or when errors are generated, the special display « ( ) » goes out.
If it is within the allowable range of pending. ( can be input into any place in an
expression as many times as desired. However, if the key is pressed continuously 16 times or
more, it be comes error.
From a viewpoint of numerical expression, even when the corresponding C key is not
pressed, the operation is not executed if the «)» key is pressed. On the other hand, when the «(«
key is pressed and the «=» key is pressed without pressing the corresponding «)» key, the
operation is also completed according to the priority.
Memory calculation ( x → M, RM, M+ )
The memory register «M» used by these keys is a completely independent single
memory.
Display data is added to «M» (memory register) by M+ key.
If data overflows at this time, the processing data is held.
Display data is stored in «M» by x → M key.
Contents of «M» is displayed by MR key.
When any data except for 0 is stored in «M», the special display «M» illuminates.
π
This key displays a rounded value (3.141592654) of a 12-digit value (3.14159265359)
according to the set display format.
b.
A value that is used in a subsequent operation is the above the 12-digit value.
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IZ1242C
c.
9.
a.
b.
The display is cleared by the following 1-st numeric key and new data is set.
% Calculation.
When any arithmetic functions or constant mode has/not been set, the displayed number
is converted from a percentage to a decimal.
Example) 61.5%
Display
6 1 . 5 %
0.615
When = key is pressed after % with any arithmetic function
• Add-on
a+b
• Discount
a-b
•
Percentag
e
axb
a÷b
10.
%
=
→a +
b)/100
(a
x
• yx, x√y
a yx b
a
%
=
→a b)/100
%
=
→(a x b)/100
%
=
→a/b x 100
(a
%
=
→at (t = b/100)
√y %
=
→ t√a
b/100)
x
x b
(t
=
Trigonometric and arctrigonometric functions (1 Variable).
-1
-1
-1
(sin, cos, tan, sin , cos , tan )
These functions are calculated according to respective defined areas and accuracy show in (6),
and displayed result of operation can become operators.
11.
Hyperbolic and archiperbolic function.
(hyp → sin cos tan, archyp → sin cos tan)
Same as trigonometric function.
12.
Exponential and logarithmic functions.
x
x
(e 10 In log)
Same as trigonometric functions.
13.
Reciprocal, square, square root and cube root.
2
3
(1/x x √ √)
Same as trigonometric functions.
14.
Factorial functions (n!).
n! = n x (n-1) x (n-2) x … x 2 x 1
Same as trigonometric functions.
→DEG → DMS
These keys convert degrees, minutes and seconds into decimal degrees and decimal
degrees into degree minutes and seconds.
b.
On the DMS format, the integer part of display data is regarded as degrees, 2 digits below
rd
the decimal point as minutes and the 3 digit and below as seconds.
1
59
5999
1.999999999 -DMS
degree
minute
second
15.
a.
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IZ1242C
Coordinate conversion ( a b → r θ → xy).
These keys convert the rectangular coordinates into the polar coordinates and the polar
coordinates into the rectangular coordinates. The angle units that have been set by the DRG key
follows.
b.
Respective defined areas and accuracy are as shown in (6), however, the range of θ
obtained by R→P in degree is as follows:
16.
a.
1st
2nd
3rd
Quadrant
Quadrant
Quadrant
4th
Quadrant
0o ≤ θ ≤ 90o
90o ≤ θ ≤180o
-180o ≤ θ ≤ 90o
-90o ≤ θ ≤ 0o
c.
Input of 2 variables is performed by setting
X or R by pressing a key and
Y or θ by pressing b key
d.
The operation result of X or R is obtained in the display register or by pressing a key and
Y or θ by pressing b key.
Input Data
a
R→P
(Rectangular→Polar)
P→R
(Polar→Rectangular)
Result
b
a
b
x
y
r
θ
r
θ
x
y
( →r, θ ) r = √(x2 + y2), θ =tan-1 y/x
(→x, y ) x = r cosθ, y = r sinθ
( R → P Conversion) ([ x, y ] →[ r, θ] )
( P → R Conversion) ( [ r, θ] → [ x, y ]
)
Key operation
x
a
y
b
→r θ
b
17.
a.
b.
c.
Display
Key operation
θ
b
r
a
→xy
b
x
x
y
y
r
θ
Display
θ
θ
r
r
x
y
Binary Mode (2ndF , → BIN, 0, 1).
Data input and output are both binary integers in a maximum of 10 digits.
A negative number is expressed in the binary number of two’s complement.
The range of internal operation is as show below and if the result of the operation exceed
the range, it becomes an error (overflow).
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IZ1242C
Outside the operation range
Binary
Positive
Integer
Binary
Positive
Integer
(Complement)
Binary Number
111111111
111111110
111111101
:
:
10
1
0
111111111
111111110
111111101
:
:
:
:
1000000001
1000000000
Outside the operation range
18.
a.
b.
c.
Octal Mode (2ndF , → OCT, 0 - 7)
Data input and output are both octal integers with a maximum of 10 digits.
A negative number is expressed in the octal number of two’s complement.
The range of internal operation is as show below and if the result of the operation exceed
the range, it becomes an error (overflow).
Outside the operation range
Binary
Positive
Integer
Octal
Negative
Integer
(Complement)
Octal Number
3777777777
3777777776
:
:
1
0
777777777
777777776
111111101
:
:
:
:
4000000001
4000000000
Outside the operation range
19.
a.
b.
c.
Decimal Number
512 ≤ DATA
511
510
509
:
:
2
1
0
-1
-2
-3
:
:
-511
-512
-512 ≥ DATA
Decimal Number
5 3 6 8 7 0 9 1 2 ≤ DATA
536870911
536870910
:
:
1
0
-1
-2
:
:
-5 3 6 8 7 0 9 1 1
-5 3 6 8 7 0 9 1 2
-5 3 6 8 7 0 9 1 3 ≥DATA
Hexadecimal Mode (2ndF , → HEX, 0 – 9, A - F).
Data input and output are both hexadecimal integers with a maximum of 10 digits.
A negative number is expressed in the hexadecimal number of two’s complement.
The range of internal operation is as show below and if the result of the operation exceed
the range, it becomes an error (overflow).
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IZ1242C
Hexadecimal Number
2540BE3FF
2540BE3FE
:
:
1
0
FFFFFFFFFF
FFFFFFFFFE
:
:
FDABF41C02
FDABF41C01
Outside the operation range
Hexadecimal
Positive
Integer
Hexadecimal
Negative
Integer
(Complement)
Decimal Number
1 x 1010 ≤ DATA
9999999999
9999999998
:
:
1
0
-1
-2
:
:
-9 9 9 9 9 9 9 9 9 8
-9 9 9 9 9 9 9 9 9 9
-1 x 1010 ≥ DATA
Outside the operation range
20.
a.
b.
Complex number Mode (2ndF , → CPLX).
Pressing these keys shall set the complex number mode.
Input of 2 parts is performed by setting the real part (X; Pressing a key) and the imaginary
part
(Y; pressing b key).
c.
The operation result of the real part is obtained by pressing = or a key and the imaginary
part by pressing b key.
Input Data 1
Real
Imaginary Function
a
b
X1
Y1
+
X1
Y1
X1
Y1
×
Characteristic
Addition
Subtraction
Multiplication
Division
X1
Input Data 2
Real
Imaginary
a
b
X2
Y2
X2
Y2
X2
Y2
÷
Y1
X2
Y2
Result
Real
Imaginary
a
b
X1+X2
Y1+Y2
X1-X2
Y1-Y2
X1X2-Y1Y2 Y1X2+X1Y2
X1X2+Y1Y2 Y1X2-X1Y2
2
2
2
2
X2 +Y2
X2 +Y2
21.
a.
b.
Static calculation Mode (2ndF , STAT).
Pressing these keys shall set the static calculation mode.
The available number of data is a positive integer, such as 0 ≤ n ≤ 9999999999, and when
the number of data exceeds this integer, it becomes an error.
c.
The input range of the data is as follows: 0 ≤  data ≤ 1 × 1050.
This data exceeds the ranges, it becomes an error.
d.
n Σx Σx2
2
These keys display the number of data (sample), each sum total of x and sum total of x .
x= nx = Σnx
n
Σ
n
S=
Σ (xi-x)
i
-1
n
Σx
2
2
=
Σx)
2
-(
n
/n
δ=
-1
n
• The standard deviation of the
sample
Σ (xi-x)2
n
2
=
Σ x2 - (Σx)
/n
n
• The standard deviation of the population
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IZ1242C
ERROR CONDITIONS
1.
2.
3.
4.
a.
b.
5.
6.
The result of operation is exponent parts exceed + 99
Entering more than the calculation range (6) of each function.
Dividing be zero.
In statistical calculation.
x, s, σ when n=0
s when n=1
The number of pending operations exceeds 3.
The number of the parenthesis in the one level exceeds 15.
OPERATION RANGE AND ACCURACY
Function
sin x
cos x
tan x
sin-1x
cos-1x
tan-1x
Angle
Unit
DEG
RAD
GRAD
DEG
RAD
GRAD
DEG
RAD
GRAD
DEG
RAD
GRAD
DEG
RAD
GRAD
DEG
RAD
GRAD
ln x
log x
ex
Normal
Accuracy
Operation Range
Under Flow Area
0 ≤ x ≤ 4.499999999 × 1010
0 ≤ x ≤ 7853981633
0 ≤ x ≤ 4.999999999 × 1010
0 ≤ x ≤ 4.500000008 × 1010
0 ≤ x ≤ 7853981649
0 ≤ x ≤ 5.000000009 × 1010
0 ≤ x ≤ 4.499999999 × 1010
0 ≤ x ≤ 7853981633
0 ≤ x ≤ 4.999999999 × 1010
0 ≤ x ≤ 1
0 ≤ x ≤ 1
0 ≤ x ≤ 1
0 ≤ x ≤ 1
0 ≤ x ≤ 1
0 ≤ x ≤ 1
0 ≤ x ≤9.999999999 × 1099
0 ≤ x ≤9.999999999 × 1099
0 ≤ x ≤9.999999999 × 1099
0≤x
0≤x
-9.999999999 × 1099 ≤ x ≤
230.2585092
0≤ x ≤ 5.729577951 × 10

-98
0≤ x ≤ 6.366197723 × 10



0≤ x ≤ 5.729577951 × 10-98

0≤ x ≤ 6.366197723 × 10-98
0≤ x ≤ 1.570796326 × 10-99

0≤ x ≤ 1.570796326 × 10-99



0≤ x ≤ 1.570796326 × 10-99

0≤ x ≤ 1.570796326 × 10-99


-9.999999999 × 1099 ≤ x ≤
227.9559243
12
-98
10 digits
±1
IZ1242C
OPERATION RANGE AND ACCURACY (Continued)
Function
x
10
x!
1/x
x2
√x
3
√x
DMS→DEG
DEG→DMS
sinh x
cosh x
tanh x
-1
sinh x
cosh-1 x
tanh-1 x
R→P
(x, y) (r, θ)
P→R
(r, θ) (x, y)
DEG→RAD
RAD→GRAD
GRAD→DEG
yx
√y
x
→DEC
→BIN
→OCT
→HEX
Normal
Accuracy
Operation Range
Under Flow Area
-9.999999999 × 1099 ≤ x ≤
99.99999999
0 ≤ x ≤ 69 (integer)
1 × 10-99 ≤ x ≤9.999999999 ×
99
10
0 ≤ x ≤9.999999999 × 1049
99
0 ≤ x ≤9.999999999 × 10
0 ≤ x ≤9.999999999 × 1099
0 ≤ x ≤9.999999999 × 109
9
0 ≤ x ≤9.999999999 × 10
0 ≤ x ≤230.2585092
0 ≤ x ≤230.2585092
0 ≤ x ≤9.999999999 × 1099
0 ≤ x ≤4.999999999 × 1099
1≤ x ≤4.999999999 × 1099
0 ≤ x ≤9.999999999 × 10-1
49
x , y  ≤9.999999999 × 10
2
2
99
(x + y ) ≤9.999999999 × 10
0≤ r ≤9.999999999 × 1099
θ correspond to the under flow
area of sin x, cos x
0 ≤ x ≤9.999999999 × 1099
0 ≤ x ≤1.570796326 × 1098
0 ≤ x ≤9.999999999 × 1099
-9.999999999 × 1099 ≤ x, ln y 
≤ 230.2585092
-9.999999999 × 10 ≤ x ≤
99.00000001

1.000000001 × 1099≤x 
99
≤ 9.999999999 × 10
0 ≤ x ≤3.162277660 × 10-50



-99
0 ≤ x ≤ 2.777777777 × 10






correspond to the under flow
area of tan x
θ correspond to the under flow
area of sin x, cos x
99
0 ≤ x ≤5.729577951 × 1098

0 ≤ x ≤1.111111111 × 10-99
-9.999999999 × 1099 ≤ x, ln y

≤ -227.9559243
y > 0; The above – mentioned operation range
у < 0; x (integer) or 1/x (x = odd, x = 0)
The above – mentioned operation range
y = 0; x > 0.
-9.999999999 × 1099 ≤ 1/x, ln
-9.999999999 × 1099 ≤ 1/x, ln
y 
y 
≤ 230.2585092
≤ -227.9559243
y > 0; The above – mentioned operation range
у < 0; x (odd) or 1/x (integer, x ≠ 0)
The above – mentioned operation range
y = 0; x > 0.
The following operation range after the conversion.
0 ≤ x ≤9999999999
The following operation range after the conversion.
1000000000 ≤ x ≤ 1111111111, 0 ≤ x ≤ 1111111111
The following operation range after the conversion.
4000000000 ≤ x ≤ 7777777777, 0 ≤ x ≤ 3777777777
The following operation range after the conversion.
FDABF41C01≤ x ≤FFFFFFFFFF, 0≤ x ≤2540BE3FF
13
10 digits
±1



IZ1242C
OPERATION RANGE AND ACCURACY (Continued)
Function
Operation Range
Normal
Accuracy
Under Flow Area
(X1+Y1i) +, -, ×, ÷ (X2+Y2i)
Addition and subtraction
99
X1+X2 ≤9.999999999 × 10
99
Y1+Y2 ≤9.999999999 × 10
Multiplication
99
X1X2-Y1Y2 ≤9.999999999 × 10
99
Y1X2+X1Y2 ≤9.999999999 × 10
99
X1X2 , Y1Y2 , Y1X2 , X1Y2 ≤9.999999999 × 10
Division
99
Y1X2-X1Y2 ≤9.999999999 × 10
X1X2+Y1Y2
2
2
2
2
,
X2 +Y2
X2 +Y2
2
2
2
2
X1X2, Y1Y2 , Y1X2, X1Y2 , X2 +Y2 , X2 , Y2 ,
99
X1X2+Y1Y2 , Y1X2-X1Y2 ≤9.999999999 × 10
Data; x ≤9.999999999 × 10
∑x ≤9.999999999 × 10
2
∑x ≤9.999999999 × 10
x; n = 0
s; n = 1, n = 0
2
2
-1
0 ≤ (∑x - ( ∑x ) /n)/ n ≤ 9.999999999 × 10
σ; n ≠ 0
2
2
0 ≤ (∑x - ( ∑x ) /n)/ n ≤ 9.999999999 × 10
Complex number
calculation
Statistic calculation
10 digits
±1
10 digits
±1
LCD CONNECTION
a. Segment
2ndF
HYP
DEG
RAD
GRAD
( )
BIN
OCT
HEX
CPLX
STAT
M
-
b13 a13
b11
a11
b10 a10
b9 a9
b8 a8
b7 a7
b6 a6
b5 a5
( )
BIN
b4 a4
b3 a3
b2 a2
b1 a1
b. Common
2ndF
HYP
DEG
RAD
GRAD
OCT
HEX
CPLX
STAT
M
E
COM4
COM3
COM1
COM2
14
b0 a0
IZ1242C
WAVEFORM OF COMMON SIGNALS
V (3V)
2V
1V
GND
DD
COM1
COM2
COM3
COM4
160Hz (6.25ms)
0.034ms
EXTERNAL CONNECTION
Pad description
Pad
No.
Pad
name
TST
DEN
KI1
KI2
COM1
COM4
a0 (KO)
b0 (KO)
a1 (KO)
b1 (KO)
a2 (KO)
b2 (KO)
a3 (KO)
b3 (KO)
a4 (KO)
b4 (KO)
a5 (KO)
b5 (KO)
a6 (KO)
b6 (KO)
Vss
VDD
a7
I/O
Description
I/O
I
I
I
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
Test
Dump Enable
Key input 1
Key input 2
Common Signal 1
Common Signal 4
LCD (Key Output)
LCD (Key Output)
LCD (Key Output)
LCD (Key Output)
LCD (Key Output)
LCD (Key Output)
LCD (Key Output)
LCD (Key Output)
LCD (Key Output)
LCD (Key Output)
LCD (Key Output)
LCD (Key Output)
LCD (Key Output)
LCD (Key Output)
Vss Power (GND)
VDD Power (+ 3V)
LCD
O
Pad
No.
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
15
Pad
name
b7
a8
b8
a9
b9
a10
b10
a11
b11
a12
b12
a13
b13
COM3
COM2
KI4
T
KI8
FODIS
EXTNL
KITEN
Vss
VDD
I/O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
I
I
I
I
I
I
Description
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
No Connection
No Connection
LCD
LCD
Common Signal 3
Common Signal 2
Key input 4
Test
Key input 8
Fosc disable
External clock
Key in test enable
Vss Power (GND)
VDD Power (+ 3V)
IZ1242C
KEY CONNECTIONS
KI8
41
1st F
HEX
2nd F STAT
7
0
8
=
%
9
)
x
10
X
KI4
39
2nd F HEX
1st F
2nd F
M
x
x
RM
σ
S
12
M+
CD
DATA
13
HEX
3
15
DEC
CE
n
2
2nd F HEX
n!
CPLX
(
X
F
Y
E TAB
BIN
b
OCT
x
2
6
a
9
tan
2
RND
xy
1/x
rθ
tan
-1
C
3
16
1
5
cos
cos
17
4
8
log
10
18
7
y
B
ln
e
19
+/-
EXP
A
sin
sin
20
DEG
Note:
DMS
D
KI1
OFF
+
11
14
1st F
KI2
4
x
x
y
hyp archyp
-1
x
x
-1
DRG DRG
= Statistic Mode Keys
16
F
E
ON/C STAT
3
22 or 46
IZ1242C
APPLICATION CIRCUIT
2ndF
HYP
DEG
RAD
( )
GRAD
12
M
O
C
,
2
M
O
C
b9
a10
b10
a11
b11
a12
b12
a13
b13
COM3
COM2
KI4
T
KI8
sin -1
sin
K14 archyp π/A
hyp
EXP
K18
DMS/D
NOTE:
+/-
ex /E
ln
10x/F
log
cos-1
cos
x y/B
yx
8
5
7
4
1
3
DEG
b6
a0 - a6, b0 - b6
a6
b5
M
O
C
,
1
a9 b8 a8 b7 a7 VDD VSS b6 a6 b5 a5 b4
28 27 26 25 24 23 22 21 20 19 18 17 16
15 a4
29
14 b3
30
31
13 a3
12 b2
32
11 a2
33
10 b1
34
IZ1242C
9 a1
35
8 b0
36
7 a0
37
6 COM4
38
5 COM1
39
4 KI2
40
41
42 43 44
45
46
1 2 3 KI1
TEST DEN
FOD EXT KIT
VSS
VDD
-
DRG
STAT
CPLX
4
2
K12 DRG
HEX
14
a7-b13, b7-b13 exept a12, b12
3
OCT
BIN
a5
b4
3V
rθ
a
2
9
6
RND
*
3
HEX
a4
2nd F
2ndF/HEX
1st F
1st F
b3
The chip substrate is electrically connected to VSS
17
0
b
,
6
a
-
2
0
a
14
STAT
ON/C
+
tan-1
tan
/C
6
b
-
M
O
C
1/x
x2
xy TAB
CPLX
b F E
OCT
X
a3
CD/DATA
M+
b2
BIN
+
σ/S
MR
a2
X Y
(
2
Σx /X
X M
b1
n!
CE
OFF
DEG 2nd
+
Σx/n
)
a1
%
=
b0
0
a0
IZ1242C
PAD DIAGRAM
(0,0)
IZ1242C PAD DIA GRAM
Chip size : 4080 x 4990
Pad size : 100 x 100
Unit
: mm
PAD LOCATION
Pad
No.
1
2
3
4
5
Pad
Name
TEST
DEN
KI1
KI2
COM1
6
COM4
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
a0
b0
a1
b1
a2
b2
a3
b3
a4
b4
a5
b5
a6
b6
VSS
VDD
a7
Description
Test
Dump enable
Key Input 1
Key Input 2
Common Signal
1
Common Signal
4
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
GND
+3.0V Power
LCD
X
Y
104
104
441
799
1081
Pad
No.
24
25
26
27
28
Pad
Name
b7
a8
b8
a9
b9
2793
3074
3154
3154
3154
3154
1297
29
a10
3154
3154
3154
3154
3154
3154
3154
3154
3154
2824
2582
2340
2098
1856
1650
1490
1295
1533
1760
2002
2245
2487
2729
2971
3213
3455
3851
3851
3851
3851
3851
3851
3851
3851
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
b10
a11
b11
a12
b12
a13
b13
COM3
COM2
KI4
T
KI8
FOD
EXT
KIT
VSS
VDD
18
Description
X
Y
LCD
LCD
LCD
LCD
LCD
1053
769
562
356
104
3851
3851
3851
3851
3548
LCD
104
3324
LCD
LCD
LCD
No Connection
No Connection
LCD
LCD
Common Signal 3
Common Signal 2
Key Input 4
Test
Key Input 8
FOSC disable
External Clock
Key in Test enable
GND
+3.0V Power
104
104
104
104
104
104
104
104
104
104
104
104
358
660
1008
1233
2329
3100
2869
2636
2411
2171
1948
1742
1558
1349
1081
703
185
104
104
104
104
104
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