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