RTC-62423A [SEIKO]
Real Time Clock, CMOS, PDSO24, SOP-24;
| 型号： | RTC-62423A |
| 厂家： | 
SEIKO EPSON CORPORATION |
| 描述： | Real Time Clock, CMOS, PDSO24, SOP-24 光电二极管 |
| 文件： | 总1页 (文件大小：169K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Real time clock module
Epson Toyocom
Product Number (Please contact us)
RTC-62421 : Q42624211xxxx00
RTC-62423 : Q42624231xxxx00
4-bit REAL TIME CLOCK MODULE
RTC-62421
RTC-62423
•Built-in crystal unit allows adjustment-free efficient operation.
•24 h /12 h changeable and leap year automatically adjustable
(Gregorian calendar).
Actual size
RTC-62421
•Pins and functions are compatible with the MSM6242 series.
RTC-62423
Block diagram
OSC
Counter
3
D
BUSY
HOLD
RESET
bit
30 sec ADJ
bit
STOP
bit
2
D
1
D
0
D
Gate
Gate
24/12
bit
bit
bit
W
S1
D1
S10
D10
MI1
MI10
H1
Y1
H10
W R
RD
S1 to CF
3
A
A2
A1
MO10
MO1
Y10
Latch
0
A
CS0
Decoder
Output
Selector
DD
V
ALE
CS1
STD.P
64 Hz
1
1
1
Second carry
Minute carry
Hour carry
CD
CE
CF
Terminal connection/External dimensions
(Unit:mm)
RTC-62421 (DIP 18-pin)
RTC-62423 (SOP 24-pin)
No.
Pin
terminal
No.
Pin
terminal
VDD
(VDD)
(VDD)
N.C.
CS1
D0
N.C.
N.C.
D1
D2
D3
No.
Pin
terminal
STD.P
/CS0
ALE
A0
A1
A2
A3
/RD
GND
No.
Pin
terminal
VDD
(VDD)
(VDD)
CS1
C0
D1
D2
D3
/WR
16.3 Max.
23.1 Max.
1
2
3
4
5
6
7
8
9
STD.P
/CS0
N.C.
ALE
A0
N.C.
A1
N.C.
A2
24
23
22
21
20
19
18
17
16
15
14
13
1
2
3
4
5
6
7
8
9
18
17
16
15
14
13
12
11
10
#18
#10
#24
#13
RTC62421 A
RTC62423
EPSON 1234A
EPSON 1234
#1
#9
10
11
12
A3
/RD
GND
#1
#12
/WR
7.62
0.2
Min.
4.2
0.2
Max.
2.8 Max.
0.1 Min.
1.52
0.46
3.3
Min.
0° - 10°
1.0
0.35
1.27
2.54
0.25
0° -15°
Metal may be exposed on the top or bottom of this product. This will not affect any quality, reliability or electrical spec.
Specifications (characteristics)
*Refer to application manual for details.
Absolute Max. rating
DC characteristics
Item
Symbol
VDD
VI/O
Condition
Ta=+25 °C
Ta=+25 °C
RTC-62421
RTC-62423
Min.
-0.3
GND-0.3
-55
Max.
+7.0
VDD+0.3
+85
Unit
Item
Symbol
Condition
VDD=5 V
VDD=2 V
Min. Typ.
Max.
30
1.8
Unit Applicable terminal
Supply voltage
Input voltage
Storage
IDD1
IDD2
VIH1
VIL1
15
1
V
Current consumption
CS1= 0 V
μA
HIGH input voltage (1)
LOW input voltage (1)
2.2
All inputs other than
TSTG
V
°C
temperature *
CS1
-55
+125
0.8
0.4
LOW output voltage (1)
*Stored as bare product after unpacking
VOL1
IOL=2.5 mA
D0 to D3
V
HIGH output voltage VOH
2.4
IOH=-400 μA
Operating range
LOW output voltage (2)
OFF leak current
Input capacity
Item
Symbol
VDD
VCLK
Condition
Min.
4.5
2.0
Max.
5.5
5.5
Unit
V
VOL2
IOFFLK
C1
IOL=2.5 mA
V1=VDD/0 V
Input frequency 1 MHz
0.4
10/-10
STD.P
Power voltage
Clock voltage
Operating
μA
5
pF
Input Pins
Stored as bare product
after unpacking
HIGH input voltage (2)
TOPR
-40
+85
VIH2
4/5 VDD
°C
temperature
VDD=2.0 V to 5.5 V
V1=VDD/0 V
V
CS1
LOW input voltage (2)
VIL2
1/5 VDD
Frequency characteristics
Input other than
D0 to D3
D0 to D3
Item
Symbol
Condition
Range
Unit
Input leak current (1) ILK1
Input leak current (2) ILK2
1/-1
μA
62421A
10/-10
±10
±50
±20
±50
+10 / -120
62421B
62423A
62423
Frequency
precision
Ta=+25 °C
VDD=5.0 V
Δf /f
×10-6
Frequency
temperature
characteristics
Frequency voltage
characteristics
-10 °C to +70 °C (+25 °C)
-40 °C to +85 °C(+25 °C)
TOP
+10 / -220
Ta=+25 °C,VDD=4.5 V to 5.5 V
Ta=+25 °C,VDD=5.0 V,First year
±5.0 Max.
±5.0 Max. ×10-6/year
×10-6/V
f/V
fa
Aging
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