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RTC-62421AS:ROHS PDF预览

RTC-62421AS:ROHS

更新时间： 2024-09-25 19:11:55
品牌 Logo 应用领域
精工 - SEIKO 光电二极管外围集成电路
页数 文件大小 规格书
4页 128K
描述
REAL TIME CLOCK

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中文翻译

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RTC-62421AS:ROHS 数据手册

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Real time clock module  
4-bit REAL TIME CLOCK MODULE  
RTC-62421/62423  
•
•
•
•
Built-in crystal unit allows adjustment-free efficient operation.  
Low standby voltage and current consumption (1.8µA at 2V).  
Wide range of operating temperature (from -40˚C to +85˚C).  
24H/12H changeable and leap year automatically adjustable (gregorian  
calendar).  
•
•
Similar mounting method (RTC-62423) to that used for universal type SMD IC.  
Pins and functions are compatible with the MSM6242 series.  
Actual size  
Specifications (characteristics)  
Absolute Max. rating  
Terminal connection  
RTC-62421  
Item  
Power source voltage  
Input and output voltage  
Symbol  
VDD  
Condition  
Ta=25˚C  
Unit  
V
Specifications  
-0.3 to 7.0  
No.  
1
2
62421  
STD. P  
CS  
No.  
1
2
62423  
STD. P  
CS0  
18 17 16 15 14 13 12 11 10  
0
VI/O  
-0.3 to VDD+0.3  
-55 to +85  
-55 to +125  
ALE  
3
3
NC  
A0  
4
4
ALE  
RTC-62421  
RTC-62423  
A1  
5
5
A0  
Storage temperature  
Soldering condition  
TSTG  
TSOL  
˚C  
A2  
6
6
NC  
A3  
7
7
A1  
Under 260˚C within 10 sec.  
(lead part) (package should  
be less than 150˚C)  
RD  
GND  
WR  
D3  
D2  
8
9
8
9
NC  
A2  
A3  
RD  
GND  
WR  
D3  
D2  
D1  
NC  
NC  
RTC-62421  
RTC-62423  
10  
11  
12  
13  
14  
15  
16  
17  
18  
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
1
2
3
4
5
6
7
8
9
Twice at under 260˚C within  
10 sec. or under 230˚C  
within 3 min.  
RTC-62423  
D1  
D0  
Operating range  
24 23 22 21 20 19 18 17 16 15 14 13  
CS  
1
(
)
VDD  
Condition  
Unit  
V
Item  
Symbol  
Specifications  
4.5 to 5.5  
(
)
VDD  
VDD  
Operating voltage  
VDD  
D0  
˚C  
V
Operating temperature  
Data holding voltage  
CS1 data holding time  
Operation restoring time  
TOPR  
VDH  
-40 to +85  
2.0 to 5.5  
CS  
1
NC  
VDD  
VDD  
VDD  
(
(
)
)
tCDR  
Refer to the data  
holding timing  
µs  
2.0 min.  
1
2 3 4 5 6 7 8 9 10 11 12  
tR  
(VDD) and VDD are to have the same level of voltage. Do not connect it to any external terminals.  
NC is not connected internally.  
Frequency characteristics and current consumption  
characteristics  
(Unit: mm)  
External dimensions  
Unit  
Item  
Specifications  
Symbol  
Condition  
RTC-62421  
±10  
±50  
±20  
±50  
62421 A  
23.1 max.  
Ta=25˚C  
VDD=5V  
62421 B  
62423 A  
62423  
Frequency tolerance  
∆f/fo  
ppm  
RTC62421 A  
EPSON 6053 C  
-10 to +70˚C  
(25˚C reference temperature)  
+10/-120  
+10/-220  
±5 max.  
Frequency temperature  
characteristics  
7.62  
-40 to +85˚C  
(25˚C reference temperature)  
VDD=5V, Ta=25˚C,  
first year  
Aging  
fa  
ppm/y  
Three drops on a  
0.25  
hard board from 75 cm  
or 3000G x 0.3ms x 1/2 sine  
wave x 3 directions  
ppm  
Shock resistance  
±10 max.  
S.R.  
90° to  
105°  
VDD=5V  
CS1=0V  
VDD=2V  
30 max.  
1.8 max.  
IDD1  
Current consumption  
µA  
IDD2  
RTC-62423  
Electrical characteristics  
Applicable  
terminal  
Typ.  
—
Item  
Symbol Condition Min.  
Max. Unit  
16.3 max.  
All inputs  
other than  
“H” input voltage (1)  
“L” input voltage (1)  
Input leak current (1)  
Input leak current (2)  
“L” output voltage (1)  
“H” output voltage  
“L” output voltage (2)  
OFF leak current  
VIH1  
VIL1  
ILK1  
2.2  
—
V
—
CS  
1
0.8  
Input other  
than D0 to D3  
1/-1  
µA  
10/-10  
V1=VDD/0V  
—
RTC62423 A  
EPSON 9220  
ILK2  
D0 to D3  
STD.P  
IOL=2.5mA  
IOH=-400µA  
IOL=2.5mA  
VOL1  
VOH  
VOL2  
0.4  
V
2.4  
—
—
0.4  
IOFFLK V1=VDD/0V  
Input  
10  
µA  
pF  
5
Input capacity  
C1  
frequency 1 MHz  
0° to  
10°  
—
1.0  
4/5 VDD  
—
“H” input voltage (2)  
“L” input voltage (2)  
VIH2  
VDD=2 to 5.5V  
—
CS1  
V
VIL2  
1/5 VDD  
67  
1234

中文翻译

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