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RTC - 4543 SA/SB
5-5. AC Characteristics
Item
CLK clock cycle
CLK low pulse width
CLK high pulse width
CLK setup time
CE setup time
CE hold time
CE enable time
Write data setup time
Write data hold time
WR setup time
WR hold time
DATA output delay time
DATA output floating time
Clock input rise time
Clock input fall time
FOUT rise time (CL=30 pF)
FOUT fall time (CL=30 pF)
Disable time
Enable time
FOUT duty ratio (CL=30 pF)
Wait time
Unless specified otherwise: Ta = - 40 to +85 C, CL = 50 pF
Symbol
t
CLK
t
CLKL
t
CLKH
t
CLKS
t
CES
t
CEH
t
CE
t
SD
t
HD
t
WRS
t
WRH
t
DATD
t
DZ
t
r1
t
f1
t
r2
t
f2
(CL=30 pF)
t
XZ
(CL=30 pF)
t
ZX
Duty
t
RCV
V
=5 V
10 %
DD
Min.
Max.
0.75
7800
0.375
3900
0.375
3900
25
0.375
3900
0.375
0.9
0.1
0.1
100
100
0.2
0.1
50
50
100
100
100
100
40
60
0.95
Page - 4
Unit
V
=3 V
10 %
DD
Min.
Max.
1.5
7800
s
0.75
3900
s
0.75
3900
s
50
ns
0.75
3900
s
0.75
s
0.9
s
0.2
s
0.1
s
100
ns
100
ns
0.4
s
0.2
s
100
ns
100
ns
200
ns
200
ns
200
ns
200
ns
40
60
%
1.9
s
MQ - 252 - 03
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