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參數(shù)資料
| 型號(hào)： | MSM5547RS |
| 廠商： | OKI ELECTRIC INDUSTRY CO LTD |
| 元件分類： | 時(shí)鐘/數(shù)據(jù)恢復(fù)及定時(shí)提取 |
| 英文描述： | 0 TIMER(S), REAL TIME CLOCK, PDIP42 |
| 封裝： | 0.600 INCH, 2.54 MM PITCH, PLASTIC, DIP-42 |
| 文件頁數(shù)： | 9/11頁 |
| 文件大?。?/td> | 113K |
| 代理商： | MSM5547RS |
7/10
Semiconductor
MSM5547
SE (set enable) Pin
In open status, the SE pin is held to “1” level by a pull-up resistor, enabling input from MS, HS
and ZA pins. These inputs become invalid by setting this pin to “0” level externally.
A/C (all clear) Pin
In open status, the A/C pin is held to “1” level by a pull-up resistor, and is in inactive status.
The time counter is set at 1 hour 00 minutes 00 seconds AM by setting this pin to “0” level
externally. The counter for seconds is rest up to 16 Hz.
If a capacitor is connected between this pin and the Vss pin, 1 hour 00 minutes AM is displayed
when power is turned on. Connect a capacitor of 4700 pF or more.
TEST Pin
In open status, TEST 1 and 2 pins are held to “0” level by a pull-down resistor.
In open status, TEST 3 and 4 pins are held to “1” level by a pull-up resistor.
TEST Select Function 1
Selector pin name
"1"
Operation mode
Inputs pulse to 16.384 kHz system of the circuit.
"1"
(or open)
TEST1
TEST2
TEST3
"0"
f (Pulse)
"1"
(or open)
Inputs pulse to 64 Hz system of the circuit.
Inputs pulse to minute counter and hour counter, and
advances 1 count with 1 pulse. (Does not carry hour
and minute counters.)
f (Pulse)
"0"
(or open)
f (Pulse)
TEST Select Function 2
Selector pin name
"1"
Operation mode
Contrast (DC 100%) display
TEST4
DIM
DIM CONT1
"0"
f (Pulse)
Sets all segment outputs to high impedance
*
DIM CONT2
*
* Indicates that input level can be “0” and “1”.
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