RTC63421 Datasheet, PDF (1/2 Pages) List of Unclassifed Manufacturers – 4-bit MULTIFUNCTIONAL REAL TIME CLOCK MODULE

Real time clock module
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.
Actual size
Model
Applicable CPU
RTC-63421
Intel bus system
RTC-63421M
Motorola bus system
RTC-63423
“MOTEL” bus system
Specifications (characteristics)
Absolute Max. rating
Item
Symbol Condition
Specifications
Unit
Power source voltage
Input voltage
VDD Ta=25˚C
VIN Ta=25˚C
-0.3 to 7.0
-0.3 to VDD+0.3
V
storage temperature
TSTG
RTC-63421
RTC-63421M
RTC-63423
-55 to +85
-55 to +125
˚C
Soldering condition
TSOL
RTC-63421
RTC-63421M
RTC-63423
Under 260˚C within 10 sec.
(lead part) (package should
be less than 150˚C)
Twice at under 260˚C within
10 sec. or under 230˚C
within 3 min.
Operating range
Item
Symbol
Condition
Specifications Unit
Operating voltage
VDD
4.5 to 5.5
V
Operating temperature TOPR
-------
-40 to +85
˚C
Data holding voltage
VDH
2.0 to 5.5
V
CS data holding time
tCDR _{Refer to the data}
2.0 min.
µs
Operation restoring time tR
holding timing
Frequency characteristics and current consumption
characteristics
Item
Symbol
Condition
Specifications Unit
63421A/63421MA +15/-5 (5±10)
Frequency tolerance
Ta=25˚C 63421B/63421MB +55/-45 (5±50)
∆f/fo _{VDD=5V 63423 A +25/-15 (5±20) ppm}
63423 +55/-45 (5±50)
Frequency temperature
characteristics
Aging
Shock resistance
Current consumption
fa
S.R.
IDD 1
IDD 2
-10 to +70˚C
(25˚C reference temperature)
-30 to +85˚C
(25˚C reference temperature)
VDD=5V, Ta=25˚C,
first year
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 ^VDD=5V
VDD=2V
+10/-120
+10/-220
±5 max.
±10 max.
30max.
1.8 max.
ppm/Y
ppm
µA
Unless otherwise stated, characteristics (specifications) shown in the above table are
based on the rated operating temperature and voltage condition.
Terminal connection
RTC-63421/63421M
18 17 16 15 14 13 12 11 10
1 2 3 4 56 7 8 9
RTC-63423
24 23 22 21 20 19 18 17 16 15 14 13
1 2 3 4 5 6 7 8 9 10 11 12
No. 63421/63421M No. 63423
1 INTERRUPT 1 INTERRUPT
2
CS0
2
CS0
3
ALE
3
ALARM
4
A0
4
ALE
5
A1
5
A0
6
A2
6 30sec.Adj
7
A3
7
A1
8 RD (E ∗1) 8
68/80
9
GND
9
A2
10 WR (R/W ∗1) 10
A3
11
D3
11 RD (E ∗2)
12
D2
12
GND
13
D1
13 WR(R/W ∗2)
14
D0
14
D3
15
CS1
15
D2
16
(VDD)
16
D1
17
(VDD)
17
1HZ
18
VDD
18
D0
19
CS1
20 STOP/ START
21
NC
22
(VDD)
23
(VDD)
24
VDD
∗ 1=63421M
∗ 2=Motorola
bus system
(VDD) is to be same level as VDD. Do not connect it to any external terminals.
NC is not connected internally.
External dimensions
RTC-63421/63421M
23.1 max.
(Unit: mm)
RTC63421 A
EPSON 6051A
7.62
0.25
90° to
105°
RTC-63423
16.3 max.
RTC63423 A
EPSON 6100
0.05 min.
2.8 max.
0° to
10°
1.0
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