T7980S | DigiCamel IC Datasheet

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TOSHIBA CMOS DIGITAL INTEGRATED CIRCUIT SILICON MONOLITHIC T7980S CMOS 1 CHIP LSI FOR LCD ELECTRONIC CALCULATOR The T7980S is a 1 chip microcomputer for 8-digits + 1-digit electronic scientific caluculation. 7980S is the complete single chip CMOS LSI for electronic calculator with 8 digit, 45 function, 3 expression and a hexadecimal, octal and binary, statistic calculation, and — fractional number calculation with the following features. Lj a Z) De _—< et US JEWS

FEATURES

@ Display 8 display digits plus 1 digits code at the right margin. LQFP60-P-1414-0.80 oo. . Weight : 0.66g (Typ.) « Scientific display. Mantissa 6 digits plus exponent 2 digits plus negative code 2 digits. « Fractional number display. 9 digits plus negative code 1 digit. « Other than above Mantissa 8 digits plus negative code 1 digit. @ 9 kinds of special display M Memory STAT Statistic calculation mode - Mantissa and exponent Minus DEG Degree E Error RAD Radian INV Inverse GRAD Gradian ( ) Parenthesis calculation @ The minus sign of the mantissa is floating minus. © The arithmetic key operation in clouding Y* or XY has same sequence as mathematical equation. 4 pending operations are allowed and(_ ) are up to continuous 15 levels. @ Fractional number calculation. © It is possible to convert or fix the display number system by F.S key. 9809 10EBA2 @ TOSHIBA is continually working to improve the quality and the reliability of its products, Nevertheless, semiconductor devices in general can malfunction or fall due to thei inherent electrical sensitivity and, vulnerability to physical stress. itis the responsibilty of the buyer, when utlizing TOSHIBA products, to observe standards of safety, and to avoid situations in which a malfunction or failure of a TOSHIBA product could cause loss of human life, bodily injury or damage to property. In developing your designs, please ensure that TOSHIBA products are used within specified operating ranges as set forth in the most recent products specifications. Also, please keep in mind the precautions and conditions set forth in the TOSHIBA Semiconductor Reliability Handbook. @ The products described in this document are subject to the foreign exchange and foreign trade laws. @ The information contained herein is presented only as a guide for the applications of our products. No responsibility is assumed by TOSHIBA CORPORATION for any infringements of intellectual property or other rights of the third parties which may result from its use. No license is granted by implication or otherwise under any intellectual property or other rights of TOSHIBA CORPORATION or others e The information contained herein is subject to change without notice. 1998-12-02 1/11

@ One independent accumulating memory. © It is possible to specify decimal part digits (0~7) by FIX key. @ Direct drive for FEM LCD (1/3 prebias, 1/4 duty). @ Automatic power on clear. @ Low power consumption. Vss = — 3.0V single power supply. @ The 60 pin flat package is used. SYSTEM BLOCK DIAGRAM bbb bellele | NC Ag B5 As NC NC Bq VppNC Ag NC B3 Ag 82 NC Apt KON. H / oo “ 8B. wet PF NSS EAE A wef |] eS tsi itoliil¢ sq pe 401 s3 preppy yy ra coma 8 —- aie fio oft to tid ta com T_T pooMB GE tt EE ta eo oe com $$ oF Et FE tb Ki 7 151 Ea Ne NC_NC NC Vss NC_NC NC VppNC NC NC NC NC °°! 152 [a8 Jas PPPPeP Pre 59 Téo

68686 O 6 O_O Of

O-O-O-0-0 0-0-0. (Note) Input capacity<300 (pF) at Vss = - 2.6 (V) Key resistance<1.5 (kQ) at Vsg = - 2.6 (V) 1998-12-02 2/11

[Beals] or] im | $3 8g Ag Bg Ag B7 Az 8 Ag B5 A5 Bq Aq 83 AZ Bz AZ By Ay 82 81 COMMON p79 Loa Loa Wp—_ ioe toma oa Io tama a Ord Ure Urb ‘dh ‘ord Ure Urd orb ord ‘Urs . 0 fo f) 90 9-0 D0 9) 0 00 9) 0 9-0 Df ZY 9 “a0 S09 S09 9 SV 0 09 S09 ' Sg 33 5 8 8 8 SET KEY LAYOUT (Example) ON STAT sin™? cos! TAN”! ORG) NE FIX [+ | Le] e 10" WY al Te SMS xeM dic <DEL> EJ] EJ E L | Ee} LJ L- | cN % 1998-12-02 3/11

” Pee |e || * | = [es] IN mM 1 cos =x cos"! & 2 TAN =x? TAN”? as 3 | eee | xm n | ae | xem 83 ——— x [lie wat | ON te sors |_s Sous | AK As 7 fog x 10° AV as exp cN AG ——| or 1? lar vw | | am pata | onen | _onow DEL DRG >H | DRG bH 1998-12-02 4/11

45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 ne 46 a0 nc ne a7 29h Ag ne 4s 2efles Vss 49 27 As Ne B50 26 BIN NC 51 25 gnc Nc M52 T7980S 240 By von 53 23 Vo ne gee (ToP VIEW) 22 fl nc ne 5s 21 Ag NC 56 20 Mnc ne 57 19 fos ne Wfse 1a Vssi M59 v7 Ts2 Woo 16 nc 1:23.45 6 7 8 9 101112131415 Creoree rence e 2erlsseassersse ee SPECIFICATION OF CALCULATOR Speed of Calculator Key on 5.8ms Key off 82ms f$WAIT = 30kHz, fgop = 70kHz The calculation speed doesn't include the key on or off time. i Calculation speed a YS [umber | 98 |] 3 5 Pa a Oo 2 Toooooo0-1) - | 70 —*+ ‘ 0: = “operation | DEC SSSSEXO909 56656+99999/ + [128 pr [La 05 x x pevvap = 6d sn [Rap SOCOCOCSCOCCCCCC =| SIN | CCS 10073= [oes [| SSSSSCSCSCSSCSC cost cos [RAD PO =f COS 757 GRAD 200+3= 1998-12-02 5/11

; [abe 8 Babe es 4f ea Fractional ee number [a [so 29-3 a aa id [2 a6 23s 3a A | 8 OPERATION RANGE AND ACCURACY [Des [oz =a assess x10" [OSES IIBSTIOXIO™ | [bec Jo=)xi=aso00000x10 [id cosx [RAD [OS k[=vassee7,———SSiPSSSSCO SS [arab _|o=)xi=S.0000000x10 [S| SAME AS SIN X SAME AS SIN X SAME AS SIN X 8 digits +1 sux [7RAD | 0sWS1 SSO i [bec [SAMEASSINX Sd cos-'x [TRAD [SAME ASSINX [SSS [~erad_[ same assin™x [| [dec [o=P=.9999999% 10 | _—SAMEASSIN-X | tan-'x [TRAD |0=Ki=sas9999910% [id accuracy) a a a =X 230.25850 =XS -227.95593 #1 =X599.999999 =X -99.000001 1998-12-02 7/11

A . Normal x! 0=x569 (INTEGER) 1x 10-99 1 1.0000001 x 1099 val S|X|=9.9999999 x 109° eo) <|X|S9.9999999 x 10% 8 digits | Vx ]0=x=9 9999999 x 10% TY JK [O= x= 9.9999999 x 10 _ O= [x =9.9999999 x 107 DEG—RAD | 0=|x|=9.9999999 x 1099 0S |X|=5.7295779 x 10-8 0 x{=1.5707963 x 10" CO GRAD->DEG |0=|x|=9.9999999 x 10% OS |S 1.1111111 x 10-9 8 digits -9.9999999 x 10°? -9.9999999 x 1099 #1 yx (1) Y>0---The above-mentioned operation range. (2) Y<0---X (Integer) or 1/X (Odd, X#0) ---The above-mentioned operation range. (3) Y=0--0<X -9.9999999 x 1099 -9.9999999 x 1099 1 1 8 digits S 5c'tN [YS 230.25850 S 5XcN |Y|S - 227.95593 +1 SY (1) Y>0---The above-mentioned operation range. (2) Y<0---X (Odd) or 1/X (Integer, X#0) ---The above-mentioned operation range. (3) Y=0--0<X Ix[=9.9999999 x 10% DATA | |sx|<9.9999999 x 10°? DEL =X? $9.9999999 x 10 0=n=99999999. n =Integer ge B n#1,n#0 8 digits w +1 a x? = Xx)? / ~ | en-1 os 1 2"/n} <9,9999999 x 10% n#0 =x? - { (EX) ?2/ os Seta") <9.9999999 x 10 1998-12-02 8/11

PARAMETER SYMBOL RATING UNIT Supply Voltage +0.3~-3.5 Input Voltage +0.3~Vpp -0.3 ELECTRICAL CHARACTERISTICS (Vs = - 3.0£0.2V, Vpp =OV, Ta=25+1.5°C) TEST PARAMETER SYMBOL ee] sce | TEST CONDITION fran | ve, |x UNIT cult Operating Voltage [| = — §[—[ — [= 25 [-3.0 7-347 vf Supply Current [ipp op [| — | = [Vss= =3.0V, operate [ — [52 [78 [xa | Supply Current | Ipp oFF | — | — |Vss=-3.0v, off | — | 1[ 3] A | Oscillating Frequency| fg WAIT | — | — __|Vss=-3.0V, wait | 18 | 30 [42] kHz | Oscillating Frequency| fg OP | — | — | Vss=~3.0V, operate | 42 [70 | 98 | kHz | “riven [vm [= [are = [BL = fos | | “O" Input Voltage [| Vy | — | ky~Kg | OC pp | — [05] vf "4" Output VouT =Vss + 0.5V Resistance RKEY [-| se | : KEY STROBE ko “0” Output _ _ "4" Output VouT =Vss + 0.5V Resistance Rsec (H) |-| ss | : KEY STROBE ko “0” Output _ _ tout [=| com frourmno-onv | = [= | |e “1” Output _ cont |=[ com fourmrsvon | = [=| |e KEY Pull Up _ mur [=[ 6 fore | a) a] ale] KEY Pull Down RPULL _ _ Resistance DOWN Ko~Ka [Vout =Vss 27 ko “M" Output = Vee - racer [tow [=| we oorduscow [= [onl = [os "M" Output _2 "M" Output a1 _ racer [tow [=| ew oortvscoar [= [n= [0 “M" Output 2 M |VoyutT=—Vsg +0.5V 7 ka recor | tom [= [ow oregueross | — | 7] — | 1998-12-02 9/11

PARAMETER SYMBOL | CIR- TEST CONDITION TYP. | MAX. | UNIT CUIT Toman [vor [| 6 [mmo [ ova |v [—[ mm [oe | [a0 | nan SEG Vss omen [von [=| ae | (Sal fo | «| 2/3 2/3 SEG 2/3 “M" Output Voltage Vom Vss Vss Vv com +0.2| “SS | -o2 1/3 1/3 "M" Output Voltage Vom oon Vss Ve Vss Vv +0.2| “SS | -0.2 noe SEG Vpp eowpavouse| vos [=| Be | [eo ooo [8 (Note 1) The key buffer is high impedance at keystrobe. WAVEFORMS FOR DISPLAY . 117Hz (Note 1) Display (sam) — Yoo 1 }(0.025ms) (2.108ms) “ss Pus Pulse Duty= —2— com 2 256 _ Than ATL seg Ay Key pulse output COMMON rs Vop — Vss SEGMENT TT. =, Yoo “ — ss (Note 1) FéWAIT =30kHz (Note 2) F¢OP =70kHz 1998-12-02 10/11

LQFP60-P-1414-0.80 Unit : mm 18.2+0.3 14.0+0.2 45 31 DONOON OO goon OD & QO Or Pir S346 Firm 30 cm Ee co Fo cor Fo se FI yl] «9 = BS |g =| fra S| & == ar = ar 60 4 Fr 16 (ooo eE eee HUCUGWOUUUOUUUU ul 15 1.4TYP. 0.3540.1 ba Pe | ¢ RCA ae FE cr) a eT 1,840.2 Weight : 0.66g (Typ.) 1998-12-02 11/11

Product Information

T7980S specifications and overview.

Summary

CMOS 1 CHIP LSI FOR LCD ELECTRONIC CALCULATOR

Description

CMOS 1 CHIP LSI FOR LCD ELECTRONIC CALCULATOR

Source title T7980S Datasheet(PDF) - Toshiba Semiconductor

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