參數(shù)資料
型號(hào)： RTC-72421
廠(chǎng)商： Electronic Theatre Controls, Inc.
英文描述： Real time clock module(4-bit REAL TIME CLOCK MODULE)
中文描述： 實(shí)時(shí)時(shí)鐘模塊（4位實(shí)時(shí)時(shí)鐘模塊）
文件頁(yè)數(shù)： 1/2頁(yè)
文件大?。?/td> 212K
代理商： RTC-72421
77
Real time clock module
Specifications (characteristics)
Absolute Max. rating
Item
Power source voltage
Input and output voltage
Operating range
Item
Operating voltage
Frequency characteristics and current consumption
characteristics
Item
Symbol
Condition
DC characteristics
Item
“
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
External dimensions
RTC-72421
Terminal connection
RTC-72421
(Unit: mm)
23.1 Max.
3
0
6
4
1
18
2
17
3
16
4
15
5
14
6
13
7
12
8
11
9
10
RTC72421 A
EPSON 5053C
RTC72423 A
EPSON 6150
(V
DD
) and V
DD
are to have the same level of voltage
.
Do not connect it to any external terminals.
NC is not connected internally.
24
2
23
22
21
20
19
18
17
16
15
14
12
13
RTC-72423
RTC-72423
0.05 Min.
2.8 Max.
7.62
0.25
2
16.3 Max.
7
1
0
1.0
0
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
STD. P
CS
0
ALE
A
0
A
1
A
2
A
3
RD
GND
WR
D
3
D
2
D
1
D
0
CS
1
(V
DD
)
(V
DD
)
V
DD
72423
STD. P
CS
0
NC
ALE
A
0
NC
A
1
NC
A
2
A
3
RD
GND
WR
D
3
D
2
D
1
NC
NC
D
0
CS
1
NC
(V
DD
)
(V
DD
)
V
DD
72421
90
°
to
105
°
0
°
to
10
°
1.27
0.35
2.54
0.65 Max.
4-bit REAL TIME CLOCK MODULE
RTC-72421
/
72423
Built-in crystal unit allows adjustment-free efficient operation.
ALE input terminal available for 8048, 8051, and 8085 series.
12/24 h clock switchover function and automatic leap year setting.
Interrupt masking.
30 second adjustment function.
Low current consumption and features a backup function.
Storage temperature
Soldering condition
Symbol
V
DD
V
I/O
T
STG
T
SOL
Condition
Ta=+25
°
C
Ta=+25
°
C
RTC-72421
RTC-72423
RTC-72421
RTC-72423
Specifications
-0.3 to 7.0
GND -0.3 to V
DD
+0.3
-55 to +85
-55 to +125
Under +260
°
C within 10 s
(lead part) (package should
be less than +150
°
C)
Twice at under +260
°
C within 10
s or under +230
°
C within 3 min.
Unit
V
°
C
Operating temperature
Data holding voltage
CSI data holding time
Operation restoring time
Symbol
V
DD
T
OPR
V
DH
t
CDR
t
R
Condition
RTC-72421
RTC-72423
Refer to the data
holding timing
Specifications
4.5 to 5.5
-10 to 70
-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
DD1
I
DD2
Ta=+25
°
C
V
DD
=5 V
72421 A
72421 B
72423 A
72423
Three drops on a
or 29400 m/s
2
x 0.3 ms x
1/2 sine wave x 3 directions
CS
=0 V
Exclude input/
output current
V
DD
=5 V
V
DD
=2 V
Specifications
±10
±50
±20
±50
+10/-120
±5 Max.
±10 Max.
10 Max.
5 Max.
Unit
x 10
-6
x 10
-6
/year
x 10
-6
μA
Input capacity
“
H
”
input voltage (2)
“
L
”
input voltage (2)
Symbol
V
IH1
V
IL1
I
LK1
I
LK2
V
OL1
V
OH
V
OL2
I
OFFLK
C
1
V
IH2
V
IL2
Condition
—
V
1
=V
DD
/0 V
I
OL
=2.5 mA
I
OH
=-400 μA
I
OL
=2.5 mA
V
1
=V
DD
/0 V
frequency 1 MHz
V
DD
=2to5.5 V
Min.
2.2
—
2.4
—
4/5 V
DD
—
Typ.
—
10
20
—
Max.
—
0.8
±1
±10
0.4
—
0.4
10
—
1/5 V
DD
Unit
V
μA
V
μA
pF
V
terminal
All inputs
other than
CS
1
Input other
0
to D
3
D
0
to D
3
STD.P
Input other
0
to D
3
D
0
to D
3
CS
1
-10
(+25
°
C reference temperature)
V
DD
=5 V, Ta=+25
°
C,
Actual size
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PDF描述
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
RTC-72421 B 制造商:Epson Toyocom Corporation 功能描述:32.768kHz 1.0uA@5ViTyp.j -3.0V to +7.0V 23.1~6.3~4.2mm +85 -40 }50ppm@+25/5.0V 23.1mm 6.3mm 4.2mm 制造商:Epson Toyocom Corporation 功能描述:32.768kHz 1.0uA@5ViTyp.j -3.0V to +7.0V 23.1~6.3~4.2mm +85 -40 }50ppm@+25/5.0V 23.1mm 6.3mm 4.2mm Bulk
RTC-72421(F)A 制造商:Epson Toyocom Corporation 功能描述:Cut Tape
RTC72421A 制造商:SEIKO EPSON 功能描述:Bulk
RTC-72421A 功能描述:IC REAL TIME CLOCK 18-DIP RoHS:否 類(lèi)別:集成電路 (IC) >> 時(shí)鐘/計(jì)時(shí) - 實(shí)時(shí)時(shí)鐘 系列:- 產(chǎn)品培訓(xùn)模塊:Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1 系列:- 類(lèi)型:時(shí)鐘/日歷 特點(diǎn):警報(bào)器，閏年，SRAM 存儲(chǔ)容量:- 時(shí)間格式:HH:MM:SS（12/24 小時(shí)） 數(shù)據(jù)格式:YY-MM-DD-dd 接口:SPI 電源電壓:2 V ~ 5.5 V 電壓 - 電源，電池:- 工作溫度:-40°C ~ 85°C 安裝類(lèi)型:表面貼裝 封裝/外殼:8-WDFN 裸露焊盤(pán) 供應(yīng)商設(shè)備封裝:8-TDFN EP 包裝:管件
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