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IZ1242M
Scientific 10 Digits LCD Calculator IZ1242M The IZ1242M is the CMOS LSI for 10-digit display and the complete single chip for scientific calculator with 56 programmed functions.
FUNCTIONS * Six operations - four standard functions (+, -, x, / ) x -y - y - auto-constant - parenthesis - percentage * Memory calculation - independent single memory (x 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 (x) - total of all data ( x) 2 - total of square of all data ( x ) - 2 kinds of the standard deviation (S, ) * 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 FEATURES * 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 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 * Mirror type M E 2ndF HYP DEG GRAD ( ) BIN OCT HEX CPLX Memory Minus Error 2nd Function Hyperbolic Degree
o ABSOLUTE MAXIMUM RATINGS (Ta = 25 C)
Characteristic
Symbol
VDD Terminal Voltage VIN Operating Temperature Topr Storage Temperature Tstg * Voltage greater than above may damage the circuit
Value - 0.3 ~ + 3.3 - 0.3 ~ VDD + 0.3 0 ~ + 40 - 55 ~ + 125
Unit V V o C o C
1
IZ1242M
ELECTRICAL CHARACTERISTICS (Ta = 25oC, VDD = 3.0V, VSS = 0V unless otherwise specified)
Characteristic 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 Symbol VDD VIH VIL VOH VOH VOL VOL VOM Rpd Rpu Fdis Fopr Ff IOFF Supply Current IDIS IOPR Vout = 0V Vout VDD Stand-by VDD = 3V Operating VDD = 3V Stand-by VDD = 3V Display is off VDD = 3V Stand-by VDD = 3V Operation VDD = 3V Test Condition Min 2.5 VDD - 0.5 VSS VDD - 0.2 VDD -0.2 VSS VSS 2/3VDD -0.2 1/3VDD -0.2 30 30 30 Typ 3 Max 3.4 VDD VSS+0.5 VDD VDD VSS +0.2 0.2 2/3VDD +0.2 1/3VDD +0.2 70 70 Unit V V V V V V K K
VDD VDD VSS VSS 2/3VDD 1/3VDD 50 50 45 200
280
KHz Hz
110
180 1 20 70 3 35 120
A
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 2ndF 2ndF 2ndF 2ndF STAT CLPX - 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
2
IZ1242M
Kinds of keys and classification of the multi-functions for all touch keys
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 | x | 10 10-99 | x | 10-9 0 and 10-9 | x | 1010
10 100
: 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.
3
TATS
2x
= % +M DC ATAD MR
M
XPLC EC !n C/NO ) s X x n
REWOP NIB ( Y X b yx EF BAT FFO + CED TCO XEH
1-
2x x/1 a r nat nat
DNR 3
9
6
C x3 gol F 01 soc soc
x
X
1-
-/+
8
5
2
xy B yx nl Ee nis nis GRD GRD
1X
PXE A GED D 7 1 4 0
pyh pyhcra Fdn2
IZ1242M
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. Example:
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
c.
* Special display
M
e. Examples of display * Floating of -6000 1/x; TAB=7
* Same as above, engineering display
* Error display DEG E Protection a. Memory overflow protection If the overflow occurs in the memory calculation, the data before the calculation is retained. 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.
4
IZ1242M
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: 10 digits Maximum Data input 10 digits Maximum Arithmetic Engineering function. Statistical function Complex number function 3 digits Maximum Memory calculation. Number of random 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 OPERATION MODE Operational mode
Mode Operation 4 Operation +, -, x, /, = Power yx, xy 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 RP RND 1 variable function DRG, DRG 0 0 0 0 0 x x 0 0 0 0 x 0 0 0 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 x x x 0 x 0 0 x x x x 0 0 x x x 0 0 0 0 x x x x x 0 x 0 0 x x x x 0 0 0 0 x 0 0 0 0 x x x x x 0 0 x 0 0 0 x x 0 0 0 x 0 0 0 0 0 x x 0 0 0 0 x x x x x 0 0 0 0 0 x 0 0 0 0 0 x 0 0 0 0 DEC BIN OCT HEX STAT CPLX
a.
6 Operation
STAT CLPX
DATA setting
CE Memory Display conversion P - R conversion Random Function Angular conversion
5
IZ1242M
The calculation is always shifted to a specified mode by mode keys A Mode
A B DEC
B Mode
DEC NOP BIN DEC Conversion NOP OCT DEC Conversion BIN Conversion NOP HEX DEC Conversion BIN Conversion OCT Conversion NOP STAT DEC Conversion State clear BIN Conversion State clear OCT Conversion State clear HEX Conversion State clear NOP Display Clear State clear CPLX DEC Conversion State clear BIN Conversion State clear OCT Conversion State clear HEX Conversion State clear Display Clear NOP
BIN
BIN Conversion OCT Conversion HEX Conversion Display Clear Display Clear
OCT
OCT Conversion HEX Conversion Display Clear Display Clear
HEX
HEX Conversion Display Clear Display Clear
STAT CPLX
Display Clear Display 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 x /180 : GRAD = RAD x 200/ : DEG = GRAD x 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
6
IZ1242M
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. +/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. 6. + , - , x, /, =, ( )
a. 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 , xy 4) x, / 5) +, b. 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. c. (Key is accepted only immediately after CE, +, -, x, /, yx, xy, =, (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. d. 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. e. 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. 7. Memory calculation ( x M, RM, M+ ) a. The memory register M used by these keys is a completely independent single memory. b. Display data is added to M (memory register) by M+ key. If data overflows at this time, the processing data is held. c. Display data is stored in M by x M key. d. Contents of M is displayed by MR key. e. When any data except for 0 is stored in M, the special display M illuminates. 8. a. 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.
7
IZ1242M
c. The display is cleared by the following 1-st numeric key and new data is set. 9. % Calculation. a. 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
b.
When = key is pressed after % with any arithmetic function * Add-on a+b * Discount a-b * Percentag e axb a/b a + b)/100 a b)/100 * yx, xy a yx b a (a xb
x
%
=
(a
x
%
= =
at (t = b/100) ta b/100) (t =
y %
%
=
%
=
(a x b)/100 a/b x 100
%
=
10. 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. 15. DEG DMS a. 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.
8
IZ1242M
1.999999999 16. -DMS 1 degree 59 minute 5999 second Coordinate conversion ( a b r xy). a. 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 obtained by RP in degree is as follows: 1st 2nd 3rd 4th Quadrant Quadrant Quadrant Quadrant 0o 90o 90o 180o -180o 90o -90o 0o
c. Input of 2 variables is performed by setting X or R by pressing a key and Y or 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 by pressing b key. Input Data a RP (RectangularPolar) PR (PolarRectangular) ( r, ) r = (x2 + y2), =tan-1 y/x (x, y ) x = r cos, y = r sin
e. ( R P Conversion) ([ x, y ] [ r, ] ) Key operation x a y b r b Display x x y y r f. ( P R Conversion) ( [ r, ] [ x, y ] ) Key operation b r a xy b Display r r x y
Result b y a r x b y
x r
17. Binary Mode (2ndF , BIN, 0, 1). a. Data input and output are both binary integers in a maximum of 10 digits. b. A negative number is expressed in the binary number of two's complement. c. 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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IZ1242M
Outside the operation range Binary Number 111111111 111111110 111111101 : : 10 1 0 111111111 111111110 111111101 : : : : 1000000001 1000000000 Decimal Number 512 DATA 511 510 509 : : 2 1 0 -1 -2 -3 : : -511 -512 -512 DATA
Binary Positive Integer
Binary Positive Integer (Complement)
Outside the operation range
18. Octal Mode (2ndF , OCT, 0 - 7) a. Data input and output are both octal integers with a maximum of 10 digits. b. A negative number is expressed in the octal number of two's complement. c. The range of internal operation is as show below and if the result of the operation exceed the range, it becomes an error (overflow).
Octal Number 3777777777 3777777776 : : 1 0 777777777 777777776 111111101 : : : : 4000000001 4000000000 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
Outside the operation range Binary Positive Integer
Octal Negative Integer (Complement)
Outside the operation range
19. Hexadecimal Mode (2ndF , HEX, 0 - 9, A - F). a. Data input and output are both hexadecimal integers with a maximum of 10 digits. b. A negative number is expressed in the hexadecimal number of two's complement. c. The range of internal operation is as show below and if the result of the operation exceed the range, it becomes an error (overflow).
10
IZ1242M
Outside the operation range Hexadecimal Positive Integer Hexadecimal Number 2540BE3FF 2540BE3FE : : 1 0 FFFFFFFFFF FFFFFFFFFE : : FDABF41C02 FDABF41C01 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
Hexadecimal Negative Integer (Complement) Outside the operation range
20. Complex number Mode (2ndF , CPLX). a. Pressing these keys shall set the complex number mode. b. 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 Input Data 2 Result Characteristic Real Imaginary Function Real Imaginary Real a b a b a Addition X1 Y1 + X2 Y2 X1+X2 Subtraction X1 Y1 X2 Y2 X1-X2 Multiplication X1 Y1 X2 Y2 X1X2-Y1Y2 x X1X2+Y1Y2 Division X1 Y1 X2 Y2 / 2 2 X2 +Y2
Imaginary b Y1+Y2 Y1-Y2 Y1X2+X1Y2 Y1X2-X1Y2 2 2 X2 +Y2
21. Static calculation Mode (2ndF , STAT). a. Pressing these keys shall set the static calculation mode. b. 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 x 1050. This data exceeds the ranges, it becomes an error. d. n x x2 2 These keys display the number of data (sample), each sum total of x and sum total of x .
* The standard deviation of the sample
* The standard deviation of the population
11
n
=
)x-ix(
=
n/ )x
2
(- x
2
2
n
n/ )x
2
1-
n
(- x
2
=
2
)x-ix(
n
n
n n x = x =x
i
n
1-
n
=S
IZ1242M
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, 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 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 Operation Range 0 x 4.499999999 x 1010 0 x 7853981633 0 x 4.999999999 x 1010 0 x 4.500000008 x 1010 0 x 7853981649 0 x 5.000000009 x 1010 0 x 4.499999999 x 1010 0 x 7853981633 0 x 4.999999999 x 1010 0 x 1 0 x 1 0 x 1 0 x 1 0 x 1 0 x 1 0 x 9.999999999 x 1099 0 x 9.999999999 x 1099 0 x 9.999999999 x 1099 0x 0x -9.999999999 x 1099 x 230.2585092

Under Flow Area 0 x 5.729577951 x 10-98 0 x 6.366197723 x 10-98 0 x 5.729577951 x 10-98 0 x 6.366197723 x 10-98 0 x 1.570796326 x 10-99 0 x 1.570796326 x 10-99 0 x 1.570796326 x 10-99 0 x 1.570796326 x 10-99 -9.999999999 x 1099 x 227.9559243

Normal Accuracy
sin x
cos x
tan x
sin-1x
10 digits 1
cos-1x
tan-1x
12
IZ1242M
OPERATION RANGE AND ACCURACY (Continued)
Function 10x x! 1/x x2 x 3 x DMSDEG DEGDMS sinh x cosh x tanh x sinh-1 x -1 cosh x tanh-1 x RP (x, y) (r, ) PR (r, ) (x, y) DEGRAD RADGRAD GRADDEG Operation Range -9.999999999 x 1099 x 99.99999999 0 x 69 (integer) 1 x 10-99 x 9.999999999 x 99 10 0 x 9.999999999 x 1049 0 x 9.999999999 x 1099 99 0 x 9.999999999 x 10 0 x 9.999999999 x 109 0 x 9.999999999 x 109 0 x 230.2585092 0 x 230.2585092 0 x 9.999999999 x 1099 0 x 4.999999999 x 1099 1 x 4.999999999 x 1099 0 x 9.999999999 x 10-1 x , y 9.999999999 x 1049 2 2 99 (x + y ) 9.999999999 x 10 99 0 r 9.999999999 x 10 correspond to the under flow area of sin x, cos x 0 x 9.999999999 x 1099 0 x 1.570796326 x 1098 0 x 9.999999999 x 1099 -9.999999999 x 1099 x, ln y 230.2585092

Under Flow Area -9.999999999 x 1099 x 99.00000001 1.000000001 x 1099x 99 9.999999999 x 10 -50 0 x 3.162277660 x 10 0 x 2.777777777 x 10-99 correspond to the under flow area of tan x correspond to the under flow area of sin x, cos x 0 x 5.729577951 x 1098 0 x 1.111111111 x 10-99 -9.999999999 x 1099 x, ln y

Normal Accuracy
10 digits 1
yx
x
y
DEC BIN OCT HEX
-227.9559243 y > 0; The above - mentioned operation range < 0; x (integer) or 1/x (x = odd, x = 0) The above - mentioned operation range y = 0; x > 0. -9.999999999 x 1099 1/x, ln -9.999999999 x 1099 1/x, ln y y 230.2585092 -227.9559243 y > 0; The above - mentioned operation range < 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

IZ1242M
OPERATION RANGE AND ACCURACY (Continued)
Function Operation Range Under Flow Area Normal Accuracy
Statistic calculation
LCD CONNECTION
. Segment b. Common
14
M
M

Complex number calculation
(X1+Y1i) +, -, x, / (X2+Y2i) Addition and subtraction 99 X1+X2 9.999999999 x 10 Y1+Y2 9.999999999 x 1099 Multiplication X1X2-Y1Y2 9.999999999 x 1099 Y1X2+X1Y2 9.999999999 x 1099 99 X1X2 , Y1Y2 , Y1X2 , X1Y2 9.999999999 x 10 Division 99 Y1X2-X1Y2 9.999999999 x 10 X1X2+Y1Y2 2 2 2 2 , X2 +Y2 X2 +Y2 X1X2, Y1Y2 , Y1X2, X1Y2 , X22+Y22 , X22 , Y22 , 99 X1X2+Y1Y2 , Y1X2-X1Y2 9.999999999 x 10 Data; x 9.999999999 x 10 x 9.999999999 x 10 2 x 9.999999999 x 10 x; n = 0 s; n = 1, n = 0 2 2 -1 0 (x - ( x ) /n)/ n 9.999999999 x 10 ; n 0 2 2 0 (x - ( x ) /n)/ n 9.999999999 x 10

10 digits 1
10 digits 1
a
IZ1242M
WAVEFORM OF COMMON SIGNALS
EXTERNAL CONNECTION Pad description
Pad No. Pad name TST VDD Vss KITEN EXTNL FODIS KI8 T KI4 COM2 COM3 b13 a13 b12 a12 b11 a11 b10 a10 b9 a9 b8 a8 I/O I/O Description Test VDD Power (+ 3V) Vss Power (GND) Key in test enable External clock Fosc disable Key input 8 Test Key input 4 Common Signal 2 Common Signal 3 LCD LCD No Connection No Connection LCD LCD LCD LCD LCD LCD LCD LCD 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 Pad name b7 a7 VDD Vss b6 (KO) a6 (KO) b5 (KO) a5 (KO) b4 (KO) a4 (KO) b3 (KO) a3 (KO) b2 (KO) a2 (KO) b1 (KO) a1 (KO) b0 (KO) a0 (KO) COM4 COM1 KI2 KI1 DEN I/O O O Description LCD LCD VDD Power (+ 3V) Vss Power (GND) 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) Common Signal 4 Common Signal 1 Key input 2 Key input 1 Dump Enable
I I I I I I O O O O O O O O O O O O O O
O O O O O O O O O O O O O O O O I I I
15
DNG V1 V2 )V3( V
DD
sm430.0
)sm52.6( zH061
4MOC
1MOC 3MOC 2MOC
GRD GRD nis e nis nl gol soc A B
1-
E F
x
x
01 soc
1-
C
3
1-
nat
nat a x TCO NIB F Y X
r x/1
2
BAT E XLPC !n EC
(
x n
2
x x %
CED
+ F dn2
FFO TATS C/NO 54 1IK XEH F dn2 44 2IK F ts1 XEH F dn2 90 4IK
62 ro 20
F ts1
TATS F dn2 XEH 70 8IK
KEY CONNECTIONS
yx
b
IZ1242M
16
syeK edoM citsitatS = pyhcra pyh PXE y y D SMD :etoN GED -/+ 7 4 1 DNR 3 XEH ATAD S DC +M MR M ) = 0 F ts1 X 82 92
x x
03 13 23 33 43 53 63 73 83 93 04 14
8 5 2 9 6
0a 0
0b = %
1a )
x/n
1b
2a RM + NIB
/S
2b
+M ATAD/DC
3a XEH 6 a r
FFO
EC !n
XLPC
E
Fb BAT yx
2x
x/1
1-nat
nat
C/
3
1-soc
soc
gol F/x01
nl E/ xe
1- nis
nis
C /NO TATS
TSET
+
V3
-
1IK 2IK
1MOC 4MOC
2MOC 3MOC
41 2
C O M 1 , C O M 4
a 0 a 6 , b 0 b 6
0a 0b 1a 1b 2a 2b 3a 3b 4a
54 44 34 24 14 04 93 83 73 63 53 43 33
DDV SSV TIK TXE DOF NED 64 1 2 3 456 7 8IK 8T 9 4IK 01 11 21 31b 31 31a M2421ZI 41 21b 51 21a 61 11b 71 11a 81 01b 91 01a 62 52 42 32 22 02 9b 23 13 03 92 82 4b 5a 5b 6a 6b SSV DDV 7a 7b 8a 8b 9a
6b - 0b ,6a - 0a 41
21b ,21a tpexe 31b-7b ,31b-7a 21
Fdn2 PYH
GED DARG
DAR
)(
NIB
TCO
XEH
XLPC TATS
APPLICATION CIRCUIT
/A
+ dn2 GED
( YX
IZ1242M
x
MX X/ 2
X TCO
The chip substrate is electrically connected to VSS
3b 3 9 4a * DNR 2 4b 1 5 5a 4 8 5b 7 6a -/+ PXE 6b
GED D/SMD
xy
B/y x
pyh pyhcra 41K
GRD GRD 21K
2
C O M 2 , C O M 3
NOTE:
1st F
2nd F
2ndF/HEX
1st F
17
81K
IZ1242M
PAD DIAGRAM
18

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