BL3501 データシートの表示（PDF） - Shanghai Belling Co., Ltd.

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BL3501

BL3501

Shanghai Belling Co., Ltd. 



 Ϟ⍋䋱ኁⷑ߯ᖂ⬉ᄤ᳝䰤݀ৌ

Shanghai Belling-Systron Microelectronics Co., Ltd.

ԡᏺ57&ⱘ0$6.ऩ⠛ᴎ㢃⠛%/

ԡ݇㋏ˈ㢹೼䖯ԡথ⫳ᯊ䇏 ݭRTC ⱘ᭄᥂ᆘᄬ఼ˈ᳝ৃ㛑䗴៤᭄᥂ߎ䫭ˈ᠔ҹ䆒㕂䆹ᷛᖫ

ԡˈᅗ೼⾦䅵᭄ব࣪ࠡⱘ 1/128 ⾦বЎĀ1āˈ೼⾦ⱘ䖯ԡᅠ៤ৢゟेᘶ໡ЎĀ0āDŽЎњֱ䆕

䇏ݭ᭄᥂ⱘℷ⹂ˈᑨ೼䇏ݭ᪡԰ࠡẔ⌟䆹ᷛᖫԡᰃ৺ЎĀ0āˈ㢹ЎĀ0ā߭ܕ䆌䇏ݭ᪡԰ˈ

৺߭⽕ℶ䇏ݭ᪡԰DŽৠᯊЎњ䇏ⱘݭ᭄᥂ϢᳳᳯؐⳌヺˈᓎ䆂ᇍ RTC ᭄᥂ⱘ䇏ݭᑨ៤ᡍ䖯

㸠DŽ

CT1:CT0ĔRTC Interrupt Period Select

00˖ѻ⫳਼ᳳЎ 1 ⾦ⱘЁᮁֵোDŽ

10˖ѻ⫳਼ᳳЎ 10 ⾦ⱘЁᮁֵোDŽ

11˖ѻ⫳਼ᳳЎ 60 ⾦ⱘЁᮁֵোDŽ

CT1:CT0 ⫼Ѣ䗝ᢽ RTC ⱘЁᮁ਼ᳳDŽ㋏㒳໡ԡᯊⱘؐЎĀ00āDŽ

3.2.12 RTC ࣅᄥޗӉ୶ RARďRTC Adjustment RegisterĐ

RAR ⫼Ѣᇍ 32.000KHz ៪ 32.768KHz ᱊ᤃⱘ䗝ᢽ੠ᯊ䩳᷵ޚDŽ

Address bit 7 bit 6 bit 5 bit 4 bit 3 bit 2 bit 1 bit 0 Reset

RAR $91 XSL F6 F5 F4 F3 F2 F1 F0 unaffected

XSLĔCrystal Select

1˖䗝⫼ 32.000KHz ⱘ᱊ᤃDŽ

0˖䗝⫼ 32.768KHz ⱘ᱊ᤃDŽ

Փ⫼ RTC ᯊϔᅮ㽕ḍ᥂᠔䗝ᢽⱘ᱊ᤃ䆒㕂 XSLDŽ

F6:F0ĔAdjustment Data

ݙ䚼᷵⬉ޚ䏃ϔᮺਃ⫼ˈ↣䱨 20 ⾦ˈḍ᥂⫼᠋ⱘ䆒ᅮ᭄᥂ˈ㞾ࡼᇍߚ乥఼ⱘ᭄᥂䖯㸠

ׂᬍˈҢ㗠䖒ࠄ䇗ᭈ乥⥛ⱘࡳ㛑DŽϔᮺᇍ䆹ᆘᄬ఼ܹݭ䴲䳊 F6:F0 ϡㄝѢ䳊ˈݙ䚼᷵⬉ޚ䏃

ᇚ㞾ࡼਃ⫼DŽᔧ F6=0 ᯊˈߚ乥఼ⱘ䅵఼᭄㽕໮䅵((F5,F4,F3,F2,F1,F0)-1)*2 Ͼᯊ䩳ᠡѻ⫳⾦

ֵো˗ᔧ F6=1 ᯊˈߚ乥఼㽕ᇥ䅵(!(F5,F4,F3,F2,F1,F0)+1)*2 Ͼᯊ䩳ህѻ⫳⾦ֵোDŽ՟བˈ

ᔧ䗝⫼ 32.768KHz ᱊ᤃᯊˈ㗠ᅲ䰙᱊ᤃ乥⥛ᰃ 32.770KHzˈ䙷Мᯊ䩳䍄ⱘ↨ᷛޚᯊ䩳ᖿˈЎ

њ䅽ᅗ੠ᷛޚᯊ䩳ৠℹˈ៥Ӏህᑨ䆹೼↣Ͼ 20 ⾦Փᕫߚ乥఼໮䅵(32770-32768)*20 Ͼᯊ䩳ˈ

гህᰃ 40 Ͼᯊ䩳਼ᳳˈѢᰃ(F6,F5,F4,F3,F2,F1,F0)㹿䆒㕂៤Ў(0,0,1,0,1,0,1)DŽ䖭ḋˈҢϔϾ

䕗䭓ⱘ਼ᳳᴹⳟˈⳌᔧѢᡞ 32.770KHz ⱘ᱊ᤃㄝᬜЎ 32.768KHz ⱘ᱊ᤃDŽ

3.2.13 RTC ೴࡬ޗӉ୶ďRTC Data RegisterĐ

RTC ЁࣙᣀѨϾ᭄᥂ᆘᄬ఼ˈߚ߿Ў⾦ᆘᄬ఼ RSRǃߚ䩳ᆘᄬ఼ RMRǃᇣᯊᆘᄬ఼

RHRǃ໽᭄ᆘᄬ఼ RDRǃ᳜ӑᆘᄬ఼ RMORǃᑈӑᆘᄬ఼ RYRǃ᯳ᳳᆘᄬ఼ RWRˈ䖭ѯ

⬉䆱˖Ӵⳳ˖㔥ഔZZZV\VWURQVKFQRI

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