57
Real time clock module
Specifications (characteristics)
Absolute Max. rating
Item
Power source voltage
Input voltage
Operating range
Frequency characteristics and current consumption
characteristics
Item
Symbol
Condition
External dimensions
RTC-63421/63421M
Terminal connection
(Unit: mm)
RTC-63421/63421M
1
18
2
17
3
16
4
15
5
14
6
13
7
12
8
11
9
10
RTC63421 A
EPSON 6051A
RTC63423 A
EPSON 6100
(V
DD
) is to be same level as V
DD.
Do not connect it to any external terminals.
NC is not connected internally.
1
24
2
23
3
22
4
21
5
20
6
19
7
18
8
17
9
16
10
15
11
14
12
13
RTC-63423
RTC-63423
1=63421M
2=Motorola
23.1 max.
3
0
6
4
2.8 max.
0.05 min.
7.62
0.25
2
16.3 max.
7
1
0
1.0
0
Unless otherwise stated, characteristics (specifications) shown in the above table are
based on the rated operating temperature and voltage condition.
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
INTERRUPT
CS
0
ALE
A
0
A
1
A
2
A
3
RD
(E
1)
GND
WR
(R/W
1)
D
3
D
2
D
1
D
0
CS
1
(V
DD
)
(V
DD
)
V
DD
INTERRUPT
CS
0
ALARM
ALE
A
0
30sec.Adj
A
1
68/80
A
2
A
3
RD
(E
2)
GND
WR
(R/W
2)
D
3
D
2
D
1
1H
Z
D
0
CS
1
STOP/START
NC
(V
DD
)
(V
DD
)
V
DD
63421/63421M
90
°
to
105
°
0
°
to
10
°
63423
4-bit MULTIFUNCTIONAL REAL TIME CLOCK MODULE
RTC-63421
/
63421M
/
63423
Builtin crystal unit allows adjustment-free efficient operation.
Alarm interruption of sec. to month and day of week possible.
Provided with microcomputer compatible bus interface.
Standard signal output selectable in a range of 10min. to 1024 Hz.
Either sec. to hour and day of week or sec. to year and day of week is selectable.
Reference area of time /alarm register is setabil. Provided with RAM bits.
(marked on “
” which is shown resister table)
Provided with START/STOP 30 second adjusting function.
Similar mounting method (RTC-63423) to the used for normal type SMD IC.
storage temperature
Soldering condition
Symbol
V
DD
V
IN
T
STG
T
SOL
Condition
Ta=25C
Ta=25C
RTC-63421
RTC-63423
RTC-63421
RTC-63421M
RTC-63423
Specifications
-0.3 to 7.0
-0.3 to V
DD
+0.3
-55 to +85
-55 to +125
Under 260C within 10 sec.
(lead part) (package should
be less than 150C)
Twice at under 260C within
Unit
V
C
Item
Operating voltage
Operating temperature
Data holding voltage
CS data holding time
Operation restoring time
Symbol
V
DD
T
OPR
V
DH
t
CDR
t
R
Condition
-------
Refer to the data
holding timing
Specifications
4.5 to 5.5
-40 to +85
2.0 to 5.5
2.0 min.
Unit
V
C
V
μs
Frequency tolerance
Frequency temperature
characteristics
Aging
Shock resistance
Current consumption
f/fo
fa
S.R.
I
DD 1
I
DD 2
Ta=25C
V
DD
=5V
63421A/63421MA
63421B/63421MB
63423 A
63423
Three drops on a
hard board from 75 cm
or 3000G x 0.3ms x
1/2 sine wave x 3 directions
CS
1
=0V
V
DD
=5V
V
DD
=2V
Specifications
+15/-5 (5±10)
+55/-45 (5±50)
+25/-15 (5±20)
+55/-45 (5±50)
+10/-120
+10/-220
±5 max.
±10 max.
30max.
1.8 max.
Unit
ppm
ppm/Y
ppm
μA
(25C reference temperature)
(25C reference temperature)
V
DD
first year
Model
RTC-63421
RTC-63421M
RTC-63423
Applicable CPU
Intel bus system
Motorola bus system
“MOTEL” bus system
Actual size