SM8577BS datasheet(7/10 Pages) NPC

Teilenummer	SM8577BS

Bauteilbeschribung	Real-time Clock IC

Download	10 Pages

Scroll/Zoom	100%

Hersteller	NPC [Nippon Precision Circuits Inc]

Direct Link	http://www.npc.co.jp/en

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7 / 10 page

SM8577B

NIPPON PRECISION CIRCUITS—7

Timing Diagrams

Data read

Data write

FOUT output

Note that the 1 Hz and 32 kHz oscillators are not

synchronized to each other, so switching between 1

Hz and 32 kHz output temporarily shortens the duty

cycle. Accordingly, a wait time (

≥ output frequency

period) should be incorporated when switching

during normal operation.

CE

CLK

DATA

tCE

tCES

tCLKH

tCLK

tDATD

tCLKL

tr1

tf1

tDZ

tCEH

tRCV

CE

CLK

DATA

tCE

tCES

tCLKH

tCLK

tsD

tCLKL

tr1

tf1

tCEH tRCV

tHD

FOUT

tr2

tH

t

10%

50%

90%

Duty= X 100(%)

t

tH

tr2

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SM8577BS Datenblatt(PDF) 7 Page - Nippon Precision Circuits Inc

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