RTC-4573 Просмотр технического описания (PDF) - Seiko Epson Corp
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RTC-4573 Datasheet PDF : 12 Pages
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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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