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參數(shù)資料
| 型號： | LV8573A |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | LV8573A Low Voltage Real Time Clock (RTC) |
| 中文描述： | LV8573A低電壓實時時鐘（RTC） |
| 文件頁數(shù)： | 2/18頁 |
| 文件大?。?/td> | 306K |
| 代理商： | LV8573A |
Absolute Maximum Ratings
(Notes 1 & 2)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales
Office/Distributors for availability and specifications.
Supply Voltage (V
CC
)
DC Input Voltage (V
IN
)
DC Output Voltage (V
OUT
)
Storage Temperature Range
b
0.5V to
a
7.0V
b
0.5V to V
CC
a
0.5V
b
0.5V to V
CC
a
0.5V
b
65
§
C to
a
150
§
C
Power Dissipation (PD)
500 mW
260
§
C
Lead Temperature (Soldering, 10 sec.)
Operation Conditions
Min
3.0
Max
3.6
Unit
V
Supply Voltage (V
CC
) (Note 3)
Supply Voltage (V
BB
) (Note 3)
DC Input or Output Voltage
(V
IN
, V
OUT
)
Operation Temperature (T
A
)
Electr-Static Discharge Rating
2.2
V
CC
b
0.4
V
0.0
V
CC
V
b
40
a
85
1
§
C
kV
Typical Values
i
JA
DIP
Board
Socket
61
§
C/W
67
§
C/W
80
§
C/W
88
§
C/W
i
JA
PLCC
Board
Socket
DC Electrical Characteristics
V
CC
e
3.3V
g
10%, V
BB
e
2.5V, V
PFAIL
l
V
IH
, C
L
e
100 pF unless otherwise specified
Symbol
Parameter
Conditions
Min
Max
Units
V
IH
High Level Input Voltage
(Note 4)
Any Inputs Except OSC IN,
OSC IN with External Clock
2.0
V
CC
a
0.3
V
V
V
BB
b
0.2
V
IL
Low Level Input Voltage
All Inputs Except OSC IN
OSC IN with External Clock
b
0.3
b
0.3
0.8
0.2
V
V
V
OH
High Level Output Voltage
(Excluding OSC OUT, INTR)
I
OUT
e b
20
m
A
I
OUT
e b
2.0 mA
V
CC
b
0.2
2.4
V
V
V
OL
Low Level Output Voltage
(Excluding OSC OUT)
I
OUT
e b
20
m
A
I
OUT
e
2.0 mA
0.2
0.3
V
V
I
IN
Input Current (Except OSC IN)
V
IN
e
V
CC
or GND
g
0.7
m
A
I
OZ
Output TRI-STATE
é
Current
V
OUT
e
V
CC
or GND
g
1
m
A
I
LKG
Output High Leakage Current
MFO, INTR Pins
V
OUT
e
V
CC
or GND
Outputs Open Drain
g
1
m
A
I
CC
Quiescent Supply Current
(Note 6)
F
OSC
e
32.768 kHz
V
IN
e
V
CC
or GND (Note 5)
V
IN
e
V
CC
or GND (Note 6)
V
IN
e
V
IH
or V
IL
(Note 6)
220
700
5
m
A
m
A
mA
I
CC
Quiescent Supply Current
(Single Supply Mode)
(Note 7)
V
BB
e
GND
V
IN
e
V
CC
or GND
F
OSC
e
32.768 kHz
30
m
A
I
BB
Standby Mode Battery
Supply Current
(Note 7)
V
CC
e
GND
OSC OUT
e
open circuit,
other pins
e
GND
F
OSC
e
32.768 kHz
8
m
A
I
BLK
Battery Leakage
2.2V
s
V
BB
s
2.6V
other pins at GND
V
CC
e
GND, V
BB
e
2.6V
V
CC
e
3.6V, V
BB
e
2.2V
0.8
m
A
m
A
b
0.8
Note 1:
Absolute Maximum Ratings are those values beyond which damage to the device may occur.
Note 2:
Unless otherwise specified all voltages are referenced to ground.
Note 3:
In battery backed mode, V
BB
s
V
CC
b
0.4V.
Single Supply Mode: Data retention voltage is 2.2V min.
In single Supply Mode (Power connected to V
CC
pin) 3.0V
s
V
CC
s
3.6V.
Note 4:
This parameter (V
IH
) is not tested on all pins at the same time.
Note 5:
This specification tests I
CC
with all power fail circuitry disabled, by setting D7 of Interrupt Control Register 1 to 0.
Note 6:
This specification tests I
CC
with all power fail circuitry enabled, by setting D7 of Interrupt Control Register 1 to 1.
Note 7:
OSC IN is driven by a signal generator. Contents of the Test Register
e
00(H) and the MFO pin is not configured as buffered oscillator out.
2
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