RTC4573 データシートの表示（PDF） - Seiko Epson Corp

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RTC4573

Serial RTC with Alarm and Timer

Seiko Epson Corp 

5. AC Characteristics

Description

CLK clock cycle

CLK H Pulse Width

CLK L Pulse Width

CE setup time

CE hold time

CE recovery time

CLK hold time

Write DATA in setup time

Write DATA in hold time

Read DATA in delay time

Output disable delay time

rise and fall time

FOUT duty ratio

( 32.768kHz output )

Symbol

t CLK

t WH

t WL

t CS

t CH

t CR

t CKH

t DS

t DH

t RD

t RZ

t RF

Duty

VDD=3.0V±10%

MIN.

TYP.

MAX.

1200

600

-

-

600

-

-

300

-

-

400

-

-

600

-

-

100

-

-

50

-

-

50

-

-

0

-

400

-

-

200

-

-

40

35

-

65

( CL=50pF,Ta=-40 to 85 °C )

VDD=5.0V±10%

MIN.

TYP. MAX.

Unit

600

ns

300

-

-

ns

300

-

-

ns

150

-

-

ns

200

-

-

ns

300

-

-

ns

50

-

-

ns

50

-

-

ns

50

-

-

ns

0

-

200

ns

-

-

100

ns

-

-

20

ns

40

-

60

%

CLK

CE

tCS

50%

50%

Write Mode

t DS t DH

CLK

50%

DATA

50%

CE

50%

tCS

tWL tWH

tCH tCKH

tCR

ReadMode

CLK

DATA

CE

t RF t RF

90%

50%

10%

t RD

50%

t RZ

50%

90%

Hi-Z

10%

Page-4

Aug.1998

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