RTC-72421 ETC

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Technical content

. : Mn: * . “a, x, “ WWM 8 Fale CAE Ste — . — RTE SSS URE Se TEE NN SER SR eg Ree ER eres QSOS, TENS ts ° . * oo 0" "8 agen (Re waar" 5 CG RE Fin PA aria . “ oS . -. ee A LS kn eS ee! AN ets Sy CI ee ett ae Ree SE eS A nt SN SeE ees SES OS wig te tet oe 4 ae te RA Ne Spe Seca ee 3 EN NR ECTS SRA Ds Seer Se Wer ke Aeneas PP Kae ST ae Mee EF ty ee . * as pw! oes Built. ory stal Unit allows Adjusthent-tree effick RU eaa ec Ga Crane en ad woes aa 24 ALE inputerminal available for 8048, 805f-and 8086 seties. <1 Rok ee eee. Smee ee en tae cxS, € 42/2: ~ ERR S Tae ISITE A Te eee Pet rigtes : . , wa Rene FOR SS rae eee. oO StS >< Uy eo Raa >. Dre SM Ct Bee + at 2 ae IAS Sy a ee eT SCR eg Se RT ETT oN ae oo ieee Be Wwe SNS “ent? % one fanetion:=: D Angas Bod oe Tee Ne SERS nT SRT Sep eS NTA BOTA th Poh tS Sr OE se ri Ene ¥ RS. [eee » #* * os aa ae fe ut Ae see at a re eS “a * Fe a, * + er 4 CIP ene. “7. en PA os Dry SS, a s 7% = a> et oh Se *. FB. ns Nis ey, ts a = — i ahs 2 oe s eat ow ent (Sect rans i, Foy eais AOR culrent consumption NishereeE CC BEE NR CCRC SER eS SEE he RA SERS MALY IS DRG pad bye : i or ale - doe a ee PLS a Le EsOl Nonty re aye are reas nnnnapey Sn Rt, Ste ae prin goad crags Sess od habt Piece 3. Rees ae Goss — PPS lh et LE $f Sopa vee" ee ee ic ALS fay ed Da Ak ee Tye fae re RCE ne eh c aes ee Re eee oa ns S Hig ae beatin *~ on Ts Se. Sees: a « Mn a a, rte YE eer ann Ue SIERO R ES Paes See ee soe Se SNe ENN aa eget eee ATOTAi A [Sees NEP IES iF ORS SER RR Oa SES NON ee ‘Actual size, ~___b Penson - Sl ee Sek R ROD oe IT Rey Pe 2M sees BAS : &N RON May a oF PES SRS BRS EE - 3 Sree . - mn ay Srswet: mired: rin ~ hat BTSs aS <> +, * Sy eee. "~~ ee a ENC Soe — Fale Ch - m@ Specifications (characteristics) BSL N a aig SL SENS SDs SEED De SSN SSE m@ Absolute Max. rating w Termi Power source vortag San iuaneaeianaameee _ ) = DSS OER MEGROTS CesT tyuty, @ RTC-72421 Input'and output voltage} Vw | Ta=25°C er, ROE] o_O Puan eee GND -0.3 to Vro+0.3 217 65 418 BH 10 tol $10.2 [29 sme | Storage temperature} Tere RTC-72421 | —_ -58 ta +85 ae Se ele ale eee esl ae toe ‘ . J - ant Tak iH. £ > tod oOo Fa on » ft ¢. - Soldering condition - ae RTC-72421 | (lead pan) (osckage should ef ARS IR Wea: a} a : ng condition cote] Teo be tess than 180°C) re pee eee RY AAA ae: | i Ta cl —_—_—- withing min ‘5678 9 So Wee a m@ Operating range © RTC-72423 TS a Oe | 12) GND tems, KSuMmbol Ga Meond idan cep Speohinauane cet tine 4 23 22 19 18 17 16 15 14 4 440) Ds | 14— vA__ hell ELE RTC-72423 -40 to 85 © Dbeherkone pchrirestynts SAA YE sae 19s nolding timing Pn : restoring time | oth holding timing 1 4 5 gS DT 34-1 Veo @ F ° (Ven) and Voo ue to hava he sare lve ok wetagn Dat nonnent requency characteristics and current ——— my ecoeeherminas. characte cs consumption Sy mboldses ss. Candilionccesoits reall iba tosses Unie External dimensions (Unit , ; q pelle pide enki Mob ched mhe wabees i rae oS ae ' mm ary wari al 210 © RTC-72421 a ® Frequency tolerance Ta=25°C| 724218 | +50 {8 .. ——__, As Voo-SV | 72423] 220 tn , NY ett, Bada gh A aca h «ake taht oe Frequency temperature | [ete et ener Ut fenvoa Yanperaisré) ee ie resistance’: | §,R, | 2st baat 75am Fee ae eget es $6 20008 x98 x +10 max. a a 7 ade he 2 recsce: . aoe 927 te Ctenitcn | _loor_| CS=OV | Vooe5V | 10max 3 “ resumption Fiooe | Semties [Voomev | _Smax__ 3 @ Electrical characteristics ay tot, iv Talons Mins p: PaaS Panic! PE e RTC-72423 All inputs ane } Tete tee ~ oe) Y ies — input leak current (1) input leak current. (1} | lust | Tat ano SHAR ABA “L" output voltage (1) | la=2-5mA 0.4 Do to Ds Seay ROY Lk oe. eo ee toe Vou _|tove-A00NA] 2.4 | | — Lo ePSONGSTISOSH | = L™ output voltage” (2)"| Vou |Icc=2.5mA yn v hme CLASES) vend . TO oO oO Offieak current <[ Torx |Veeven/OV STDP ees Input capacity a ' 10 Input Ghar POEL SETI IIONIT OE E ae ~ - . »} | Do to Da | . = = ~~ P : — ai x ode SORA dd ‘ “H™ input voltage- (2) ry Do to Da ons am. “rn oe my . Ea Ty Voce 28mm. |o H.'s Catan OT wef | fia] | -

@ Register table M™ Write mode (with ALE) fol orolo; Sf so | s | se | st_| 0109 | tsmoddgtmgser cs. IGS} tar Ae) NEW th (ost TPO] OL Ol] 1 Sey = | sx | sa | sw | Oto5 | 10-seoond digit mgs Aa to Aa ce tt Awe 2 fol ols fot msl mis | mic | mie | mit | 0109 | 1- mine digt register Se -: ive || Ave 3] O] OG) 4) 4 | Mil = | miso | mizo| mito! Oto5 | 10-minute digit regse tw (Le |

4 JO tp OlOl Hs] he | te | he | hs | Oto | thought | ue _——_/m vid ve

50] 1]0] | He] + [raat] too | me | OS, | memonansetasir | | WR = 0g | PAIR, YO-heues digt register wr = _ vu {Ol ilalolo| de | ce | de | cs | Ot09 | Poyehngan vee od gee 7} Ol 4} 414] Dol + | + | deo} do | Otos | 10-daydigtregisier | Do to Ds ‘a 8.11] 01.0) 0) Mi] mos | mos | mozi mor | O08 | t-montheigtrepister . 9] a olol1( Mod + | + | +» [mow| Ot | i-monhdigteosa Bla) oltlt| Yo] yoo [yo | ya | yo | 909 | 10-yoarcigt regis Clipe{oio; Wi] + jf we | we] wi | Oto6 | Wekrgiter aan, 20 S28. | IRG 10] 4] 1] 0] + |Aio} SS FLAG | BUSY) HOLD Control Register D M@ Read mode (with ALE) e]a]s] [oma b | t | Bi | msc] — | conto Rage FL +] t] 4] + [rar rst aur] sto | wes || conte Retr ee vetesn ‘ (Csi) ts E} te O="L level,1="H" level, REST = RESET ITRPT/ STND=INTERRUPT/STANDARD oan _—. 1} Bit*does not exist. mr alk tH (cst) 2) Please mask AM/PM bit with 10's of hours operations. CS: : 3) Busy is read only. IRQ can only. IRQ can only be set low ("0"). tw Le | 4) [Data Git_[neavAMens RRM STUD ooo ceate | vim Voed\\Lve Vi fe RPT ae ALE Mou Sealey 6) TEST bit should be "0". twee ™@ Switching characteristics (with ALE) Wav inch pf] trvz ins (Please connect ALE to Voo if the microprocessor does not have an ALE output.) De to Ds vot =| Yen BS | CS: setuptime | tues fi 1000! Address setup time before ALE | tu wwe | | 50 | Address hold time afterALE | stimew =| st S50 | ALE pulse width TC ee ALE setup time before WRITE | teu wem | | 0 @ Data holding timing ALE setup time beforeREAD | twmew |] 0 | y ALE setup time after WRITE tum | | 50. ° 4V av ALE setup time after READ _tuaae | | 50 | ns 2t04V WRITE pulse width tw | os: toon tr | DATA delay tine after READ - 120 | Vow Vou DATA Hold time after READ teem | | OO | 70 | A— = DATA hold time after WRITE] trom | | 10 | wend | wth the exer CS: hold time yc ee ee 8) terminals \\ So or WE J xe or WR nol occurred READWRITE recoverytime | twcam | | 200 (Voo = 5V£0,5V) reer MH Block diagram ADWACS: ALE 8=—- GS A A A Oe ©: De Ds Bs ol27 gauge | menor a am BBE E ‘ f sage fe ATIC Tf” a eh eee bth eee he ee her ee f ‘ Seo [Sec 16 , Mow 2D. 0: ew 10) Aon 9 Mite Yea 1 Pa ' _ Kt tt tu. t ft tt ft