Seiko Epson RTC-4553AC, Руководство по применению

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RTC – 4553AC
Page - 3 MQ - 342 - 01
4. Absolute maximum ratings
GND=0 V
Item Symbol Condition (pin) Min. Max. Unit
Power supply voltage V
DD
V
DD
−
GND
−
0.3 +6.0
Input voltage V
IN
S
IN
, SCK , WR , CS0 , CS1
−
0.3
V
DD
+0.3
Output voltage V
OUT
S
OUT
, TP
OUT
−
0.3
V
DD
+0.3
V
Storage temperature T
STG
Stored bare product after unpacking
−
55
+125 °C
Soldering conditions T
SOL
—
Twice at under +260 °C within 10 seconds, or
under +230 °C within 3 minutes
5. Recommended operating conditions
GND=0 V
Item Symbol Condition Min. Typ. Max. Unit
Power supply voltage V
DD
V
DD
−
GND 2.7 5.0 5.5 V
Operation temperature T
OPR
No condensation
−
30
— +70 °C
6. Frequency characteristics
GND=0 V
Item Symbol Condition Rating Unit
± 5
×
10
-6
Frequency precision
∆
f / fo
Ta = +25 °C
V
DD
= 5.0 V
AC
± 0.432 sec. / day
Frequency/temperature
characteristics
t
OP
Ta =
−
10 °C to +70 °C,
V
DD
= 5 V (Referenced at +25 °C )
+10
−
120
×
10
-6
Frequency/voltage
characteristics
f / V
Ta = Fixed, V
DD
= 2 V to 5.5 V
(Referenced at 5 V)
± 5
×
10
-6
Aging fa Ta = +25 °C, V
DD
= 5 V, First year ± 5
×
10
-6
/ year
Note
(1) Frequency tolerance rating applies to V
DD
= 5.0 V.
(At V
DD
= 3 V, voltage characteristics must be taken into consideration.)
(2) Frequency tolerance rating applies at the time of shipment.
(3) Design the peripheral circuitry so that power start-up time (t
R
) is 1.0
µ
s/V
≤
t
R
≤
1.6 ms/V.
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