Seiko Epson RTC-4553AC, Руководство по применению

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RTC – 4553AC
Page - 4 MQ - 342 - 01
7. Electrical characteristics
7.1. DC, AC Characteristics
7.1.1. V
DD
= 5 V
(1) DC Characteristics ( GND=0 V , Ta =
−
30
°
C
∼
+70
°
C )
V
DD
= 5 V ± 10 %
Item Symbol Condition
Min. Typ. Max.
Unit
Data retention
voltage
V
DH
— 2.0 — 5.5 V
I
DD
1
(normal operation)
SCK = 500 kHz
CS0 = L, CS1 = H
— — 100
Current
consumption
I
DD
2
(backup
operation)
SCK = 0 Hz
CS0 = H, CS1 = L
— 1.0 3.0
µ
A
V
OH
I
OH
=
−
400
µ
A
V
DD
−
0.4
— —
Output voltage
V
OL
I
OL
= 1.6 mA — — 0.4
V
I
OZH
V
OUT
= 5.5 V
−
2.0
— 2.0
Output leak
current
I
OZL
V
OUT
= 0 V
−
2.0 — 2.0
µ
A
V
IH
— 4/5 V
DD
— —
Input voltage
V
IL
— — — 1/5 V
DD
V
I
IH
V
IN
= 5.5 V
−
2.0 — 2.0
Input current
I
IL
V
IN
= 0 V
−
2.0
— 2.0
µ
A
Oscillation
startup time
Ts Ta = +25 °C — — 3.0 s
(2) AC Characteristics
( GND=0 V , Ta =
−
30
°
C
∼
+70
°
C )
V
DD
= 5 V ± 10 %
Item Symbol Condition
Min. Typ. Max.
Unit
SCK frequency f
CLK
— — — 500 kHz
SCK "L" time t
WCKL
— 1.0 — —
SCK "H" time t
WCKH
— 1.0 — —
SCK pause time t
PS
— 1.0 — —
CS0 setup time t
SCS
— 0 — —
CS0 hold time t
HCS
— 0.5 — —
S
IN
data setup time t
SD
— 0.2 — —
S
IN
data hold time t
HD
— 0.2 — —
WR setup time t
SWR
— 1.0 — —
WR hold time t
HWR
— 0.5 — —
µ
s
S
OUT
delay time t
DS
0 CL=100 pF — 150 500
Time lag between CS0 , CS1 enable
and S
OUT
output
t
DSZ
1 CL=100 pF — — 100
Time lag between CS0 disable and
S
OUT
high Z
t
DSZ
2 CL=100 pF — — 100
Time lag between CS1 enable and
TP
OUT
output
t
DPZ
1 CL=100 pF — — 100
Time lag between CS1 disable and
TP
OUT
high Z
t
DPZ
2 CL=100 pF — — 100
ns
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