ꢀ
SϞhan⍋gha䋱i Bኁellinⷑg-Sy߯strᖂon M⬉icrᄤoele᳝ctro䰤nics݀Coৌ., Ltꢀd.ꢀ
ꢁԡᏺ57&ⱘ0$6.ऩ⠛ᴎ㢃⠛%/ꢌꢆꢉꢅ
Ң㗠ৃҹࡴ
䗳 RTC ⱘ⌟䆩䖛DŽ㋏㒳ԡᯊˈRTCT ⏙䳊DŽ
F38KEĔ38KHz Modulation Enable
F38KE އ
ᅮᰃ৺ OUT ᓩ㛮ⱘ䕧ߎ
ֵোϞࡴ
䕑 38KHz ⱘ䇗ࠊ
⊶DŽ㋏㒳ԡᯊˈF38KE
⏙䳊DŽ
3.2.11 RTC ࣅ
ᄥޗ
Ӊ୶ RCRďRTC Control RegisterĐ
RCR ᰃϔϾ⫼Ѣࠊ
RTC ഫᎹᮍᓣⱘᆘᄬ఼DŽ
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2 bit 1 bit 0
CT1 CT0
Address
$90
Reset
RTCIF RTCIE
ADJ/XSTP FLAG
RCR
0101 00-0
RTCIFĔRTC Interrupt Flag
1˖⏙ RTC Ёᮁ䫕ᄬֵোDŽ
0˖ֱ⬭ RTC Ёᮁ䫕ᄬֵোDŽ
㋏㒳ԡᯊˈRTCIF ⏙䳊DŽRTC ѻ⫳ЁᮁৢˈЁᮁֵোᇚ㹿䫕ᄬˈᔧ RTCIF=1 ᯊˈ⏙
RTC Ёᮁ䫕ᄬֵো˗RTCIF=0 ᯊˈRTC Ёᮁ䫕ᄬֵোϡবDŽડᑨ RTC ЁᮁПৢˈЁᮁ
໘⧚ᄤᑣЁᑨᇍ RTCIF ݭ
Ā1āˈ৺߭ᇚϡᮁડᑨ RTC ЁᮁDŽ䇏 RTCIF 㒧ᵰྟ㒜ЎĀ0āDŽ
RTCIEĔRTC Interrupt Enable
1˖⽕ℶ RTC ЁᮁDŽ
RTCIE ᰃ RTC ЁᮁՓ㛑ԡˈЁᮁֵোḍ CT1:CT0 ⱘ㓪ⷕϡৠ䕧ߎ
ϡৠⱘ਼ᳳᗻЁᮁDŽ
㋏㒳ԡᯊˈRTCIE 㕂 1ˈ⽕ℶ RTC ЁᮁDŽ
ADJ/XSTPĔClock Adjust or Crystal Oscillator Stop
ADJ/XSTP ᰃϔԡ⫼ԡˈݭ
ܹᯊᰃ ADJ˄ᯊ䩳᷵ℷԡ˅ˈ䇏ߎ
ᯊᰃ XSTP˄RTC
ᤃذ
ᤃẔ⌟ԡ˅DŽᇍ ADJ 㕂Ā1āৢˈབᵰ⾦㑻ⱘ䅵᭄Ѣ 30ˈ߭ߚ
䩳ⱘ䅵᭄ࡴ
ϔˈ䱣ৢ
⾦䅵᭄㹿⏙䳊ˈПৢ ADJ 䖨ಲॳ⢊ᗕDŽXSTP˖া㛑䇏ߎ
ˈ᮴ࡳݭ
㛑DŽᯊ䩳ഫϞ⬉ৢЎ 1ˈ
ᇍᅗᅲ⦄߱ྟ࣪
˄ݭ
᪡˅ৢˈবЎ 0DŽབᵰ XSTP さ✊বЎ 1ˈ䇈ᯢϞϔ䇏᪡ৢˈ
RTC ⱘ 32KHz ᤃ᳒㒣ذ
ᤃˈᯊ䯈᭄ϡᇍˈᦤ⼎ᮄᯊ䯈᭄DŽ
FLAGĔRTC R/W Enable Flag
FLAG ᰃ䇏ܕݭ
䆌ᷛᖫԡˈᰃা䇏ⱘDŽ⬅Ѣ RTC ЁᄬѨ㑻䅵఼᭄ˈⳌѦП䯈ᄬ䖯
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