EPSON
n
Characteristics
1. Absolute maximum ratings
Item
Power supply voltage
Input voltages
Output voltages
Storage temperature
Symbol
V
DD
V
I
V
O
T
STG
Conditions (Pins)
Ta = 25°C, V
DD
-V
SS
Ta = 25°C input pins
D
0
to D
3
Temperature stored as
separate item.
Rated Value
-0.3 to +7.0
-0.3 to V
DD
+0.3
-0.3 to V
DD
+0.3
RTC-58321
RTC-58323
Soldering temperature
T
SOL
RTC-58321
RTC-58323
-55 to +85
-55 to +125
Unit
V
V
V
°C
°C
Maximum 260°C for up to 10 seconds (pins);
package maximum 150°C.
Maximum 260°C for up to 10 seconds (twice maximum), or
maximum 230°C for up to three minutes.
2. Operating Conditions
Item
Power supply
Data hold voltage *1
Operating
temperature
RTC-58321
RTC-58323
Symbol
V
DD
V
DH
T
OP
Min.
4.5
2.2
-10
-30
Typ.
5.0
−
−
−
Max.
5.5
5.5
70
85
°C
Unit
V
Notes
V
DD
-V
SS
*1 Data hold voltage:
This is the range of power supply voltage for which the internal operation of the clock is guaranteed.
I/O operations are not guaranteed.
3. Frequency characteristics
Item
RTC-58321 A
Frequency
tolerance
RTC-58321 B
RTC-58323
Aging
Temperature characteristics *2
Voltage characteristics
*2 Deviation from the frequency at 25°C.
Notes
1. Frequency tolerance based on V
DD
= 5.0 V.
2. Frequency tolerance is value guaranteed on factory shipment.
fa
t
OP
f
V
Ta = 25°C :V
DD
= 5.0V ; first year
V
DD
= 5.0V ; Ta = -10 to 70°C
V
DD
= 2.2 to 5.5V
Ta fixed, 5V reference
∆f/f
O
Symbol
Conditions
Ta = 25°C
V
DD
= 5.0V
Max.
±
10
±
50
5
±
20
±
5
+ 10/-120
±
2
ppm/y
ppm
ppm
ppm
Unit
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EPSON [ EPSON COMPANY ]
