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Characteristics; Absolute Maximum Ratings; Recommended Operating Conditions; Frequency Characteristics And Current Consumption Characteristics - Epson RTC-72421 A Applications Manual

Real time clock module
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RTC - 72421 / 72423

Characteristics

1. Absolute maximum ratings

Item
Supply voltage
Input voltage
Output voltage
Storage temperature

2. Recommended operating conditions

Item
Supply voltage
Operating temperature
Data hold voltage
CS
data hold time
1
Operation recovery time

3. Frequency characteristics and current consumption characteristics

Item
Frequency tolerance
Operation temperature
Frequency voltage
characteristics
Aging
Shock resistance
Current consumption

4. Electrical characteristics ( DC characteristics )

Item
High input voltage 1
Low input voltage 1
High input voltage 2
Low input voltage 2
Input leakage current 1
Input leakage current 2
Low output voltage 1
High output voltage
Low output voltage 2
Off-state leakage current
Input capacitance
Input-output capacitance
Symbol
Condition
V
Ta=+25 C
DD
V
Ta=+25 C
I
V
Ta=+25 C
O
RTC-72421
T
STG
RTC-72423
Symbol
Condition
V
DD
T
No condensation
OPR
V
DH
t
See the section on data
CDR
hold timing
tr
Symbol
Condition
Ta=+25 C
f/f0
V
=5.0 V
DD
RTC-72421 : 10 C to +70 C
(+25 C reference)
RTC-72423 : 40 C to +85 C
(+25 C reference)
Ta=+25 C
V
=2.0 V to 5.5 V
DD
fa
V
=5.0 V, Ta=+25 C
DD
Drop test 3 times on a hard board from
S.R.
0.75 m height, or 29400 m/s
1/2 sin wave
3 directions
I
1
Ta=+25 C, CS
DD
1
I
2
I/O currents excluded
DD
Symbol
Condition
V
1
IH
V
1
IL
V
2
V
=2.0 V to
IH
DD
5.5 V
V
2
IL
I
1
LK
V
=V
/0 V
I
DD
I
2
LK
V
1
I
=2.5 mA
OL
OL
V
I
=-400 A
OH
OH
V
2
I
=2.5 mA
OL
OL
I
V
= V
/ 0 V
OFFLK
I
DD
C
Input
I
frequency
1 MHz
C
/
I
O
Page - 4
Specification
0.3 to 7.0
GND 0.3 to V
GND 0.3 to V
55 to +85
55 to +125
Specification
4.5 to 5.5
RTC-72421 ; 10 to +70
RTC-72423 ; 40 to +85
2.0 to 5.5
2.0 Min.
RTC-72421A
RTC-72421B
RTC-72423A
RTC-72423
2
0.2 ms
V
=5.0 V
1.0 Typ.
=0 V
DD
V
=2.0 V
0.9 Typ.
DD
Applicable pins
Min.
All input pins except for
2.2
CS
1
4/5V
CS
1
Input pins except for
D
to D
0
3
D
to D
0
3
2.4
STD.P
Input pins except for
D
to D
0
3
D
to D
and STD.P
0
3
Unit
+0.3
DD
+0.3
DD
Unit
Specification
Unit
10
50
20
50
+10 / 120
+10 / 220
5 Max.
10
5 Max.
10
10 Max.
10 Max.
5 Max.
Typ.
Max.
Unit
0.8
DD
1/5V
DD
1/-1
10/-10
0.4
0.4
10/-10
10
20
MQ - 162 - 03
V
V
V
C
C
V
C
C
V
s
-6
10
-6
/ V
-6
/ year
-6
10
A
V
V
A
V
A
pF
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