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參數(shù)資料
| 型號： | AN6780S |
| 廠商： | PANASONIC CORP |
| 元件分類： | XO, clock |
| 英文描述： | General Purpose Long Interval Timers |
| 中文描述： | REAL TIME CLOCK, PDSO14 |
| 封裝： | PLASTIC, SOP-14 |
| 文件頁數(shù)： | 3/4頁 |
| 文件大小： | 47K |
| 代理商： | AN6780S |
(2)
1
(4)
2
(6)
3
(8)
4
V
CC
Pins numbers in ( )
are for the AN6780S
Oscillation interval T
O (S)
0.69R
T
(
) · C
T
(F)
Output interval T
I (S)
22R
T
(k
) · C
T
(
μ
F)
Integrating timer interval
T
S (s)
11R
T
(k
) · C
T
(
μ
F) + (T
1
+ T
2
+ ···)
Timer interval T
t (S)
11R
T
(k
) · C
T
(
μ
F)
R
T
1 to 10
μ
F
C
T
R
L
V
CR
Output
T
O
T
1
= 32768T
O
(9)
5
AN6780, AN6780S
(11)
6
(12)
7
–
+
V
CC
Pin numbers in ( ) are for the AN6780S
Reset
(Timer control)
R
T
1 to 10
μ
F
C
T
R
L
AN6780, AN6780S
(4)
2
3
4
–
+
V
CR
Reset
T
O
T
S
= T
1
+ T
2
+ 16384T
O
Stop
Output
T
1
T
2
V
CR
Output
Reset
T
O
V
CC
R
T
Pin numbers in ( ) are for the AN6780S
Integration input
1 to
10
μ
F
C
T
R
L
AN6780, AN6780S
(4)
2
3
4
–
+
T
t
=16384T
O
T
t
1) Superlow frequency oscillator
2) Timer
3) Integrating timer
(2)
1
(6)
(8)
(9)
5
(11)
6
(12)
7
(2)
1
(6)
(8)
(9)
5
(11)
6
(12)
7
I
Application Circuit
6
The pin numbers in ( ) are for the AN6780S
(11)
Obeserve the following in order to prevent destruction
and reliability of the IC during its use.
1) For distribution of the oscillation frequency, take about
17% (IC alone) into account at the time of designing.
When accuracy is requested, use a variable resistor as a
timed resistor to make adjustment.
2) For the timed resistor, use a polyester capacitor with low
tan
δ
, whose resistance is 1k
to 1M
and timed capacity
of 0.1
μ
F.
3) The values obtained from the timer interval calcuation
expression, etc. in Application Circuit change depending
on accuracy of the timed capacity in the actual set, etc.
4) Attach a capacity (1 to 10
μ
F) to the Pin1 (2) in order to
protect the IC against noises and stabilize its operation.
5) During normal operation, when you turn on the power
after extremely short period of power-off, note that auto
reset may not be applied due to residual potential of
external capacity.
6) Take a proper countermeasure noises in order to prevent
malfunctioning from being caused by external noises.
Particularly, when setting a long interval, pay attention to
the external noises.
7) When a plunger or relay is connected to the output circuit,
connect diodes to both ends of the coil in order to protect
the IC against counter electromotive power generated
after power-off
I
Supplementary Descriptions
Precautions on Use
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