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 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 • Mirror type M E 2ndF HYP DEG GRAD ( ) BIN OCT HEX CPLX 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 1 Value - 0.3 ~ + 3.3 - 0.3 ~ VDD + 0.3 0 ~ + 40 - 55 ~ + 125 Unit V V o C o C IZ1242M 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 2 IZ1242M Kinds of keys and classification of the multi-functions for all touch keys DRG DRG sin sin e E ln xy B yx 2ndF archyp hyp -1 -1 X X x 7 8 9 4 5 6 0 OCT HEX 3 RND 2 1 OFF TAB F E xy b X Y ( BIN tan tan rθ a 1/x x2 cos cos 10 F log 3x C -1 D DEG A EXP STAT POWER +/- DEC + ON/C n! CE CLPX 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 ≤ | 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 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: 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. 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 a. OPERATION MODE Operational mode Mode DEC 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 x 0 0 x x x x 0 x x x x 0 0 0 0 x 0 x 0 0 x x x x 0 0 x x x 0 0 0 0 x 0 x 0 0 x x x x 0 0 0 0 x 0 0 0 0 x 0 0 x 0 0 0 x x 0 0 0 x 0 0 0 0 0 x 0 x x x x x 0 0 0 0 0 x 0 0 0 0 0 x 0 x x x x 0 0 0 0 x x x x x x x x x 0 0 0 0 0 0 IZ1242M 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 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. + , - , ×, ÷, =, ( ) 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 , x√y 4) ×, ÷ 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, +, -, ×, ÷, 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. 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. π 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 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 = 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. 1 degree -DMS 59 minute 5999 second Coordinate conversion ( a b → r θ → 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 θ obtained by R→P in degree is as follows: 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 e. ( R → P Conversion) ([ x, y ] →[ r, θ] ) Key operation x a y b →r θ b f. Display x x y y r θ ( P → R Conversion) ( [ r, θ] → [ x, y ] ) Key operation θ b r a →xy b Display θ θ r r x y 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). 9 IZ1242M 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 Decimal Number 512 ≤ DATA 511 510 509 : : 2 1 0 -1 -2 -3 : : -511 -512 -512 ≥ DATA 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). 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 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 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 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. 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 × 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 × 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 11 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, 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 Operation Range Under Flow Area Normal Accuracy 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 × 10-98 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 10 digits ±1 12 IZ1242M OPERATION RANGE AND ACCURACY (Continued) Function 10x x! 1/x x2 √x 3 √x DMS→DEG DEG→DMS sinh x cosh x tanh x sinh-1 x -1 cosh 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 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 0 ≤ x ≤9.999999999 × 1099 99 0 ≤ x ≤9.999999999 × 10 0 ≤ x ≤9.999999999 × 109 0 ≤ x ≤9.999999999 × 109 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 × 1099 ≤ x ≤ 99.00000001 1.000000001 × 1099≤x 99 ≤ 9.999999999 × 10 -50 0 ≤ x ≤3.162277660 × 10 0 ≤ x ≤ 2.777777777 × 10-99 correspond to the under flow area of tan x θ correspond to the under flow area of sin x, cos x 10 digits ±1 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 Normal Accuracy IZ1242M OPERATION RANGE AND ACCURACY (Continued) Function Complex number calculation Statistic calculation Operation Range 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 Normal Accuracy 10 digits ±1 10 digits ±1 LCD CONNECTION M a . Segment b. Common M 14 IZ1242M 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 VDD Vss KITEN EXTNL FODIS KI8 T KI4 COM2 COM3 b13 a13 b12 a12 b11 a11 b10 a10 b9 a9 b8 a8 I/O Description I/O 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 I I I I I I O O O O O O O O O O O O O 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 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 O O O O O O O O O O O O O O O O I I I 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 IZ1242M KEY CONNECTIONS KI8 1st F HEX 2nd F STAT 41 0 40 = % 39 ) x n x2 x 38 37 36 X 1st F 2nd F HEX 1st F M + RM σ S M+ CD DATA HEX 3 33 RND 2nd F HEX DEC CE n! CPLX ( X E TAB F Y BIN b OCT x2 xy 1/x 6 a rθ 9 tan tan-1 3 2 C 32 1 5 cos cos-1 31 4 8 log 10 30 7 yx B ln e 29 +/- EXP A sin sin 28 DEG Note: DMS D KI1 OFF 2nd F 35 34 KI2 44 KI4 09 07 x y hyp archyp x x -1 DRG DRG = Statistic Mode Keys 16 F E ON/C STAT 45 02 or 26 IZ1242M APPLICATION CIRCUIT STAT CPLX HEX OCT ( ) BIN 12 GRAD DEG a0 - a6, b0 - b6 4 M O C , 1 M O C a9 b8 a8 b7 a7 VDD VSS b6 a6 b5 a5 b4 28 29 30 31 32 b9 20 22 23 24 25 26 33 a4 19 a10 34 b3 b10 18 a11 17 35 a3 36 b2 b11 16 37 a2 a12 15 38 b1 b12 14 IZ1242M 39 a1 a13 13 40 b0 b13 12 41 a0 11 42 10 43 KI4 9 44 KI2 T 8 KI8 7 6 5 4 3 2 1 46 45 KI1 DEN FOD EXT KIT VSS VDD 2 HYP 2ndF 14 a7-b13, b7-b13 exept a12, b12 3 M O C , 2 M O C RAD 2 6 b 0 b , 6 a 0 a 14 COM3 COM4 COM2 COM1 TEST - K12 DRG DRG sin -1 sin ex /E ln 10x/F log cos-1 cos 3 /C 3V STAT ON/C + tan-1 tan rθ a K14 archyp π/A EXP x y/B yx 8 5 2 9 6 K18 +/- 7 4 1 RND * 3 HEX hyp DMS/D DEG b6 NOTE: a6 b5 a5 b4 a4 2nd F 2ndF/HEX 1st F 1st F OCT X a3 b3 The chip substrate is electrically connected to VSS 17 xy TAB CPLX b F E 1/x x2 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 IZ1242M PAD DIAGRAM 18