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silan semiconductors sc3442 hangzhou silan microelectronics joint-stock co.,ltd rev: 1.0 2000.12.20 1 scientific 10-digits lcd calculator description the sc3442 is the cmos lsi for a 10-digits display and the complete single chip for scientific calculator with 56 programmed functions. features * display -- 10 display digits plus negative code digits. -- scientific and engineering display. -- 8 mantissa digits plus 2 exponent digits plus 2 negative code digits. * 14 kinds of special display m memory grad gradient C minus ( ) parenthesis e error bin binary mode 2ndf 2nd function oct octal mode hyp hyperbolic hex hexadecimal mode deg degree cmx complex number mode rad radian stat statistic calculation mode * the minus sign of the mantissa is floating minus. * the arithmatic 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 ? ekey. sc3442 chip topography ordering information device package operating temperature sc3442 fl rv fw 48 qfp sc3442p bare chip 0~+40 * 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. * 48 qfp and bare chip available
silan semiconductors sc3442 hangzhou silan microelectronics joint-stock co.,ltd rev: 1.0 2000.12.20 2 pad assignment 31 30 32 33 34 35 36 37 38 39 29 28 40 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 45 41 42 43 44 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 b7 a8 b8 a9 b9 a10 b10 a11 b11 a12 b12 a13 b13 com3 com2 ki4 ki8 fodis extnl kiten vss vdd sc3442 abcolute maximum ratings characteristic symbol value unit v dd -0.3 ~ +5.0 v terminal voltage v in -0.3 ~ v dd +0.3 v operating temperature topr 0 ~+40 c storage temperature tstg -55 ~ +125 c
silan semiconductors sc3442 hangzhou silan microelectronics joint-stock co.,ltd rev: 1.0 2000.12.20 3 electrical characteristics (v dd =+3.0v 0.2v, v ss =0v,tamb=25~70 c) parameter symbol condition min typ max unit operating voltage v dd -- 2.533.4v idis v dd =3v, stand by 20 35 m a iopr v dd =3v, operation 70 120 m a supply current ioff v dd =3v, off 1 3 m a fdis v dd =3v, stand by 30 45 khz osc frequency fopr v dd =3v, operation 200 280 khz frame frequency ff v dd =3v, stand by 110 180 hz auto power off iapo v dd =3v 300 430 600 sec high input voltage (ki8~ki1) v ih -- v dd -0.5 v dd v low output voltage (ki8~ki1) v il -- v ss v ss +0.5 v high output voltage (ki8, ki4, ki2) v oh -- v dd -0.2 v dd v dd v low output voltage (ki1) v ol -- v ss v ss v ss +0.2 v key pull down resistance (ki1) fpd vout=0v 30 50 70 k w key pull up resistance (ki8, ki4, ki2) rpu vout=v dd 30 50 70 k w high output voltage (lcd, com) v oh -- v dd -0.2 v dd v dd v m output voltage (lcd, com) v om -- 2/3 v dd -0.2 2/3 v dd 2/3 v dd +0.2 v m output voltage (lcd, com) v om -- 1/3 v dd -0.2 1/3 v dd 1/3 v dd +0.2 v low output voltage (lcd, com) v ol -- v ss v ss v ss+ 0.2 v basic specifications 1. 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 2. classification of operation mode the following 6 types of operation mode are set by the 2ndf key and below keys: 2ndf stat : statistic calculation mode are set 2ndf cplx : complex number calculation mode set 2ndf - bin : binary mode set 2ndf - oct : octal mode set 2ndf - hex : hexadecimal mode set 2ndf - dec : decimal mode set
silan semiconductors sc3442 hangzhou silan microelectronics joint-stock co.,ltd rev: 1.0 2000.12.20 4 3. kinds of keys and classification of the multi-functions for all 42 touch keys 2ndf hyp exp drg sin in y x cos log tan a x 2 off b ( on/c ce ) stat 7 4 1 0 8 5 2 +/- 9 6 3 x - + rm m+ = deg x f e x m n x x x 2 s d data cd % n! cplx power tab xy xy 1/x r q tan -1 cos -1 sin -1 10 x f x 3 c y x b e e x dms d archyp p a bin dct hex dec rnd drg 4. the condition during calculation no key input is allowed and no data is displayed during calculation. 5. display method a. set number and result of operation are displayed in the right margin, minus floating. b. display of decimal number operation results. display is made according to the display format that has been set by the f ? ekey. floating mode 10 10 ? x ? 10 100 : exponent display. 10 -99 ? x ? 10 -9 : exponent display. 0 and 10 -9 ? x ? 10 10 : floating display. engineering mode 0 and 10 -99 ? x ? 10 100 (all ranges); exponent display. the f ? e key also converts the display format of a displayed numerical value simultaneously with the display format setting.
silan semiconductors sc3442 hangzhou silan microelectronics joint-stock co.,ltd rev: 1.0 2000.12.20 5 at the same time, the number of digits below the decimal point of the above modes follows the display format assigned by the 2dnf and f ? ekeys. 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. 2 7 = 2ndf 3 2ndf f e f e f e 0.285714285 0.286 2.857-01 2.8571428-01 example: tab c. negative number are not displayed with the minus symbol - but ate displayed in hexadecimal, octal, and binary twos complements. d. display style and special display display style special display 2ndf hyp deg rad grad( ) bin oct hex cplx stat
silan semiconductors sc3442 hangzhou silan microelectronics joint-stock co.,ltd rev: 1.0 2000.12.20 6 e. examples of display same as above, engineering display floating of -6000 1/x; tab=7 error display deg e 6.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. 7. the number of digits of the internal retained data. the number of the digits of the mantissa of the displayed data is a maximum of 10 digits, but the available data for successive calculations is the internally retained data. the number of digits of the mantissa of internally retained data is as follows: a. data input maximum 10 digits b. arithmetic maximum 10 digits c. engineering function d. statistical function e. complex number function f. memory calculation g. number of random maximum 3 digits 8. 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. 9. power off function a. auto power off about 7.5 minutes after operation is ended by pressing the key, the power supply is turned off.
silan semiconductors sc3442 hangzhou silan microelectronics joint-stock co.,ltd rev: 1.0 2000.12.20 7 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 1. operation mode mode operation dec bin oct hex stat cplx 4 operation +, - , , ? ,= oooooo power x y , x y oxxxox parenthesis ( ) o o o o x x constant calculation o o o o o x 6 operation percentage calculation o x x x o x stat statistical calculation x x x x o x cplx calculation x x x x x o cplx input a, b o x x x x o numberic input 0, 1 o o oooo numberic input ( 2~7 ) o x oooo numberic input 8, 9 o x x o o o hex input a~f x x x o x x ,exp oxxxoo +/- oooooo data setting shitkey oooooo ce oooooo memory memorycalculation oooooo display conversion f ? e, tab oxxxxx p-r conversion p ? r ? p oxxxxo random rnd o x x x o o function 1 variable function o x x x o o augular conversion drg drg ? oxxxoo
silan semiconductors sc3442 hangzhou silan microelectronics joint-stock co.,ltd rev: 1.0 2000.12.20 8 2. the calculation is always shifted to a specified mode by mode keys a mode ? b mode a b dec bin oct hex stat cplx dec nop dec conversion dec conversion dec conversion dec conversion state clear dec conversion state clear bin bin conversion nop bin conversion bin conversion bin conversion state clear bin conversion state clear oct oct conversion oct conversion nop oct conversion oct conversion state clear oct conversion state clear hex hex conversion hex conversion hex conversion nop hex conversion state clear hex conversion state clear stat display clear display clear display clear display clear nop display clear cplx display clear display clear display clear display clear display clear state clear nop 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 sequencially. deg rad grad and display it. b. pressing this key will change the mode of the angle and will convert the displayed data. deg ? rad : rad=degx 180 rad ? grad : grad=radx 200 grad ? deg : deg=gradx0.9
silan semiconductors sc3442 hangzhou silan microelectronics joint-stock co.,ltd rev: 1.0 2000.12.20 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 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 operation 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) y x , x y 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, +, -, , ? , 3x y , 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.
silan semiconductors sc3442 hangzhou silan microelectronics joint-stock co.,ltd rev: 1.0 2000.12.20 10 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. c.displaydataisstoredinmbyx ? mkey. 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. p a. this key displays a rounded value (3.14592654) of a 12-digit value (3.1459265359) according to the set display format. b. a value that is used in a subsequent operation is the above the 12-digit value. c. the display is cleared by the following 1st numeric key and new data is set. 9. % calculation a. when any arithmetic functions or constant mod has not been set, the displayed number is converted from a percentage to a decimal. example) 61.5% display 61.5%0.615 b. when = key is pressed after % with any arithmetic function add-on percentage axb % = ? 100 axb a+b % = ? a+ 100 axb a ? b %= ? x100 b a discount x x y , y a x y b %= ? ) 100 b (t a t = a-b % = ? a- 100 axb a x y b %= ? ) 100 b (t a t = 10. trigonometric and arctrigonometric functions (1 variable) (sin cos tan sin -1 cos C1 tan -1 ) 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 archyperbolic function (hyp ? sin cos tan, archyp ? sin cos tan) same as trigonometric function.
silan semiconductors sc3442 hangzhou silan microelectronics joint-stock co.,ltd rev: 1.0 2000.12.20 11 12. exponential and logarithmic functions (e x 10 x in log) same as trigonometric functions 13. reciprocal, square, square root and cube root. (1/x x2 , 3 ) same as trigonometric function 14. factorial function (n!) n! = n (n-1) (n-2) 2 1 same as trigonometric 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 the decimal point as minutes and the 3rd digit and below as seconds. 1 59 5999 1.999999999 -dms degree minute second 16. coordinate conversion (a b ? r q? xy) a. these keys convert the rectangular coordinates into the polar coordinates into the rectangular coordinates. the angle units that have been set by the drg key follows. b. respective defined areas and accruacy are as shown in (6), however, the range of q obtained by r ? pin degree is as follows: 1st quadrant 0 q 90 2nd quadrant 90 q 180 3rd quadrant 180 q -90 4th quadrant -90 q 0 c. input of 2 variables is performed by setting. x or r by pressing a key and yor q by pressing b key. d. the operation result of x or r is obtained in the display register of by pressing a key and y or q by pressing b key. input data result a b a b r ? p (rectangular ? polar) x y r q p ? r(polar ? rectangular) r q xy ( ? r, q )r= 2 2 y x + , q =tan -1 y/x ( ? x, y)x=rcos q ,y=sin q
silan semiconductors sc3442 hangzhou silan microelectronics joint-stock co.,ltd rev: 1.0 2000.12.20 12 e. (r ? p conversion) ([x, y] ? [r, q ]) f. (p ? r conversion) ([r, q ] ? [x, y]) key operation display key operation display xx qq axb q yyrr byar ? r q r ? xy x b q by 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 binary number of twos complement. c. the range of internal operation is as shown below and if the result of the operation exceed the range, it becomes an error (overflow) binary number decimal number outside the operation range ? 512 data binary positive integer 111111111 111111110 111111101 : : 10 1 0 511 510 509 : : 2 1 0 binary positive integer (complement) 111111111 111111110 111111101 :: :: 100000001 100000000 -1 -2 -3 : : -511 -512 outside the operation range -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 display of twos complement.
silan semiconductors sc3442 hangzhou silan microelectronics joint-stock co.,ltd rev: 1.0 2000.12.20 13 c. the range of internal operation is as shown below and if the result of the operation exceeds the rang, it becomes an error (overflow) octal number decimal number outside the operation range ? 536870912 data binary positive integer 3777777777 3777777776 : : 1 0 536870911 536870910 : : 1 0 octal positive integer (complement) 777777777 777777776 111111101 :: :: 4000000001 4000000000 -1 -2 : : -536870911 -536870912 outside the operation range - 536870913 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 a hexadecimal number of twos complement. c. the range of internal operation is as shown below and if the result of operation exceeds the range, it becomes an error (overflow ) hexadecimal number decimal number outside the operation range ? 1x10 10 data hexadecimal positive integer 2540be3ff 2540be3fe : : 1 0 9999999999 9999999998 : : 1 0 hexadecimal positive integer (complement) ffffffffff fffffffffe 111111101 : : fdabf41c02 fdabf41c01 -1 -2 : : -9999999998 -9999999999 outside the operation range -1x10 10 3 data
silan semiconductors sc3442 hangzhou silan microelectronics joint-stock co.,ltd rev: 1.0 2000.12.20 14 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 real imaginary real imaginary real imaginary item a b function a b a b addition x1 y1 + x2 y2 x1+x2 y1+y2 subtraction x1 y1 - x2 y2 x1-x2 y1-y2 multiplication x1 y1 x x2 y2 x1x2-y1y2 y1x2+x1y2 division x1 y1 ? x2 y2 2 2 y2 x2 y1y2 x1x2 + + 2 2 y2 x2 x1y2 y1x2 + - 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 ? 1x10 50 this data exceeds the ranges, it becomes an error. d. n x x 2 these keys display the number of data (sample), each sum total of x and sum total of x 2 average; x= n x n 1 i i = = n x the standard deviation of the sample the standard deviation of the population s= 1 n 1 i 2 n x) (xi - = - = 1 2 2 n /n x) ( x - ? - d = n x) (xi n 1 i 2 - = = n /n x) ( x 2 2 ? -
silan semiconductors sc3442 hangzhou silan microelectronics joint-stock co.,ltd rev: 1.0 2000.12.20 15 error conditions (1) the result of operation in exponent parts exceed+99 (2) entering more than the calculation range (6) of each function. (3) dividing by zero. (4) in statistical calculation a. x, s, s when n=0 b. s when n=1 (5) the number of pending operations exceeds 3 (6) the number of the parenthesis in the one level exceeds 15. operation range and accuracy function angle unit operation range under flow area normal accuracy deg 0 ? x ? 4.499999999x10 10 0 ? x ? 5.729577951x10 -98 rad 0 ? x ? 7853981633 -- sin x gard 0 ? x ? 4.999999999x10 10 0 ? x ? 6.366197723x10 -98 deg 0 ? x ? 4.500000008x10 10 -- rad 0 ? x ? 7853981649 -- cos x gard 0 ? x ? 5.000000009x10 10 -- deg same as sin x same as sin x rad same as sin x same as sin x tan x gard same as sin x same as sin x deg 0 ? x ? 10 ? x ? 1.570796326x10 -99 rad 0 ? x ? 1 -- sin -1 x gard 0 ? x ? 10 ? x ? 1.570796326x10 -99 deg same as sin -1 x-- rad same as sin -1 x-- cos -1 x gard same as sin -1 x-- deg 0 ? x ? 9.999999999x10 99 same as sin -1 x rad 0 ? x ? 9.999999999x10 99 -- tan -1 x gard 0 ? x ? 9.999999999x10 99 same as sin -1 x in x 0 x -- log x 0 x -- 10 digits 1 (to be continued)
silan semiconductors sc3442 hangzhou silan microelectronics joint-stock co.,ltd rev: 1.0 2000.12.20 16 (continued) function operation range under flow area normal accuracy e x -9.999999999x10 99 x 230.2585092 -9.999999999x10 99 x -227.9559243 10 x -9.999999999x10 99 x 99.99999999 -9.999999999x10 99 x -99.00000001 x! 0 x 69(integer) -- 1/x 1x10 -99 x 9.999999999x10 99 1.000000001x10 99 ? x ? 9.999999999x10 99 x 2 0 x 9.999999999x10 49 0 x 3.162277660x10 -50 x 0 x 9.999999999x10 99 -- 3 x 0 x 9.999999999x10 99 -- dms ? deg 0 x 9.999999999x10 9 -- deg ? dms 0 x 9.999999999x10 9 0 x 2.777777777x10 -99 sinh x 0 x 230.2585092 -- cosh x 0 x 230.2585092 -- tanh x 0 x 9.999999999x10 99 -- sinh -1 x 0 x 4.999999999x10 99 -- cosh -1 x 1 x 4.999999999x10 99 -- tanh -1 x 0 x 9.999999999x10 -1 -- r ? p(x, y)(r, q ) x , y 9.999999999x10 49 (x 2 +y 2 ) 9.999999999x10 99 correspond to the under flow area of tanx p ? r(r, q ) (x, y) 0 r 9.999999999x10 99 q correspond to the operation range of sinx, cosx q correspond to the under flow area of sinx, cosx deg ? rad 0 x 9.999999999x10 99 0 x 5.729577951x10 98 rad ? gard 0 x 1.570796326x10 98 -- gard ? deg 0 x 9.999999999x10 99 0 x 1.111111111x10 -99 -9.999999999x10 99 x. ln y 230.2585092 -9.999999999x10 99 x. ln y -227.9559243 y x i) y>0; the above ? mentioned operation range ii) y<0; x (integer) or 1/x (x=odd, x=0) the above ? mentioned operation range iii) y=0; x>0 10 digits 1 (to be continued)
silan semiconductors sc3442 hangzhou silan microelectronics joint-stock co.,ltd rev: 1.0 2000.12.20 17 (continued) function operation range under flow area normal accuracy -9.999999999x10 1/x. ln y 230.2585092 -9.999999999x10 1/x. ln y -227.9559243 x y i) y>0; the above ? mentioned operation range ii) y<0; x (odd) or 1/x (integer, x 1 0) the above ? mentioned operation range iii) y=0; x>0 10 digits 1 ? dec the following operation range after the conversion. 0 x 9999999999 -- ? bin the following operation range after the conversion. 1000000000 x 1111111111, 0 x 1111111111 -- ? oct the following operation range after the conversion. 40000000000 x 777777777, 0 x 3777777777 -- ? hex the following operation range after the conversion. fdabf41c01 x ffffffffff, 0 x 2540be3ff -- complex number calculation (x1+y1i) +, -, x, ? (x2+y2i) i) addition and subtraction x1+x2 9.9999999999x10 99 y1+y2 9.9999999999x10 99 ii) multiplication x1x2-y1y2 9.9999999999x10 99 y1x2-x1y2 9.9999999999x10 99 x1x2 , y1y2 , y1x2 , x1y2 9.9999999999x10 99 iii) division 2 2 y2 x2 y1y2 x1x2 + + , 2 2 y2 x2 x1y2 y1x2 + - 9.9999999999x10 99 x22+y22 , x22 , y22 , x1x2+y1y2 , y1x2-x1y2 , x1x2 , y1y2 , y1x2 , x1y2 9.9999999999x10 99 10 digits 1 statistical calculation i) data; x 9.9999999999x10 ii) x 9.9999999999x10 iii) x 2 9.9999999999x10 vi) x; n=0 v) s; n=1 n=0 0 1 2 2 n /n x) ( x - ? - 9.9999999999x10 vi) s ;n=0 0 n /n x) ( x 2 2 ? - 9.9999999999x10 10 digits 1
silan semiconductors sc3442 hangzhou silan microelectronics joint-stock co.,ltd rev: 1.0 2000.12.20 18 lcd connection 2ndf hyp deg rad grad bin oct hek cplx stat m m 2ndf hyp deg rad grad bin oct hek cplx stat m m e a. segment b. common 45 44 41 40 39 38 37 36 35 34 33 32 29 28 27 26 25 24 23 22 21 20 19 18 1716 com3 com2 46 47 com3 com2 15 14 waveform of com 160hz (6.25ms) 0.034ms com4 com3 com2 com1 vdd (3v) 2v 1v gnd
silan semiconductors sc3442 hangzhou silan microelectronics joint-stock co.,ltd rev: 1.0 2000.12.20 19 pin description pin no. signal i/o description pad no. pin no. signal i/o description pad no. 1 k18 i key input 8 40 25 b4(ko) o lcd (key output) 16 2 fodis i fosc disable 41 26 a5(ko) o lcd (key output) 17 3 extnl i external clock 42 27 b5(ko) o lcd (key output) 18 4 kiten i key in test enable 43 28 a6(ko) o lcd (key output) 19 5 nc 29 b6(ko) o lcd (key output) 20 6 vss vss power (gnd) 44 30 vss vss power(gnd) 21 7 nc 31 vdd vdd power(+3v) 22 8 vdd vdd power (+3v) 45 32 a7 o lcd 23 9nc 33b7olcd 24 10 tst i/o test 1 34 a8 o lcd 25 11 den i dump enable 2 35 b8 o lcd 26 12 ki1 i key input 1 3 36 a9 o lcd 27 13 ki2 i key input 2 4 37 b9 o lcd 28 14 com1 o common signal 1 5 38 a10 o lcd 29 15 com4 o common signal 4 6 39 b10 o lcd 30 16 ao(ko) o lcd (key output) 7 40 a11 o lcd 31 17 bo(ko) o lcd (key output) 8 41 b11 o lcd 32 18 a1(ko) o lcd (key output) 9 42 a12 o no connection 33 19 b1(ko) o lcd (key output) 10 43 b12 o no connection 34 20 a2(ko) o lcd (key output) 11 44 a13 o lcd 35 21 b2(ko) o lcd (key output) 12 45 b13 o lcd 36 22 a3(ko) o lcd (key output) 13 46 com3 o common signal 3 37 23 b3(ko) o lcd (key output) 14 47 com2 o common signal 2 38 24 a4(ko) o lcd (key output) 15 48 k14 i key input 4 39
silan semiconductors sc3442 hangzhou silan microelectronics joint-stock co.,ltd rev: 1.0 2000.12.20 20 key connections 1st f 2nd f hex stat 0 % = ) rnd x 2 x x m n x s d rm m+ cd data -- hex 3 1 4 7 +/- d dms deg 1st f 2nd f hex 2nd f + dec ( 2 x x 6 9 5 8 y x b exp a hyp archyp bin oct p y x 1st f 2nd f hex off n! ce cplx tab tan tan -1 c f e b x 2 1/x a r q cos cos -1 log 10 x f in e x e sin sin -1 drg xy 3 drg on/c stat note: =statistic mode keys 16 17 18 19 20 21 22 23 24 25 26 27 28 29 k18 1 k14 48 k12 13 k11 12 8or31 y
silan semiconductors sc3442 hangzhou silan microelectronics joint-stock co.,ltd rev: 1.0 2000.12.20 21 application circuit ki2 36 35 34 33 32 31 30 29 28 27 26 25 48 47 46 45 44 43 42 41 40 39 38 37 13 14 15 16 17 18 19 20 21 22 23 24 1 2 3 4 5 6 7 8 9 10 11 12 b9 a10 b10 a11 b11 a12 b12 a13 b13 com3 com2 ki4 tset den ki1 ki8 fodis extnl kiten v ss v dd nc nc nc com1 com4 a0 b0 a1 b1 a2 b2 a3 b3 a4 b4 a5 b5 a6 b6 vss vdd a7 b7 a8 b8 a9 2ndf hyp deg rad grad ( ) bin oct hex cplx stat cplx y x drg drg archyp hyp dms/d deg dms/d deg sin -1 sin / a exp +/- e x /e in 7 10 x /f iog 8 4 cos -1 cos 5 1 2 rnd tan -1 tan 9 3 r a 6 hex 1/x x 2 oct x cd/cata m+ xy b bin + /s mr tab fe xy ( xm /x x 2 ) x/n n! ce dec + % = off 2nd 0 /b y x 3 x /c x stat on/c *note b6 a6 b5 a5 b4 a4 b3 a3 b2 a2 b1 a1 b0 a0 k18 k12 k14 v dd a7~a13, b7~b13 except a12,b12 a0~a6, b0~b6 12 14 14 2 a0~a6, b0~b6 com1, com4 com2, com3 2 sc3442 48 digits 3v 2nd f 1st f 2nd f 1st f hex * sc3442s substrate (the back side of sc3442s chip) should be connected to the vss (gnd) level.
silan semiconductors sc3442 hangzhou silan microelectronics joint-stock co.,ltd rev: 1.0 2000.12.20 22 pad diagram 41 42 44 45 46 47 48 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 18 17 21 23 22 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 chip size: 3.50x2.83mm 2
silan semiconductors sc3442 hangzhou silan microelectronics joint-stock co.,ltd rev: 1.0 2000.12.20 23 pad coordinates pad no. symbol x y pad no. symbol x y 1 tst 1266.4 1035.6 25 a8 -1664.0 -834.2 2 den 1664.0 1328.8 26 b8 -1644.0 -1014.2 3 ki1 1664.0 1328.8 27 a9 -1664.0 -1194.2 4 ki2 922.0 1328.8 28 b9 -1367.2 -1329.2 5 com1 646.6 1328.8 29 a10 -1187.2 -1329.2 6 com4 456.8 1328.8 30 b10 -1007.2 -1329.2 7 a0(ko) 256.8 1328.8 31 a11 -827.2 -1329.2 8 b0(ko) 56.6 1328.8 32 b11 -647.2 -1329.2 9 a1(ko) -143.4 1328.8 33 a12 -467.2 -1329.2 10 b1(ko) -343.2 1328.8 34 b12 -287.2 -1329.2 11 a2(ko) -543.4 1328.8 35 a13 -107.2 -1329.2 12 b2(ko) -743.8 1328.8 36 b13 72.8 -1329.2 13 a3(ko) -943.4 1328.8 37 com3 272.8 -1329.2 14 b3(ko) -1143.2 1328.8 38 com2 462.8 -1329.2 15 a4(ko) -1343.4 1328.8 39 k14 734.4 -1329.2 16 b4(ko) -1664.0 965.8 40 k18 1294.2 -1329.2 17 a5(ko) -1664.0 765.8 41 fodis 1664.0 -1329.2 18 b5(ko) -1664.0 565.8 42 extnl 1664.0 -1028 19 a6(ko) -1664.0 365.8 43 kiten 1664.0 -764.2 20 b6(ko) -1664.0 165.8 44 vss 1664.0 -445.2 21 vss 1664.0 -34.2 45 vdd 1664.0 533.2 22 vdd -1664.0 -234.2 23 a7 -1664.0 -434.2 24 b7 -1664.0 -634.2 note: the original point of the coordinate is the die center.

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