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參數(shù)資料
| 型號： | LC72146M |
| 廠商： | SANYO SEMICONDUCTOR CO LTD |
| 元件分類： | PLL合成/DDS/VCOs |
| 英文描述： | PLL FREQUENCY SYNTHESIZER, 40 MHz, PDSO24 |
| 封裝： | MFP-24 |
| 文件頁數(shù)： | 21/22頁 |
| 文件大?。?/td> | 157K |
| 代理商： | LC72146M |
No. 4922-8/22
LC72146, 72146M, 72146V
Continued from preceding page.
Number
Symbol
Type
Function
Equivalent circuit
13
LCTR/I-7
General-purpose
counter
LCTR is selected when CTS1 is set to 0.
If the CTS0 bit in the serial data is set to 1:
The circuit operates in frequency measurement mode.
nput frequency range: 10 to 500 kHz
The signal is directly transmitted to the general-purpose
counter without passing through the divide-by-two circuit.
If the CTS0 bit in the serial data is set to 0:
The circuit operates in period measurement mode.
nput frequency range: 1 Hz to 20 kHz
The measurement period can be set to be either one or
two periods of the input signal, and if two period
measurement is selected, the input frequency range
becomes 2 Hz to 40 kHz.
The result is output from the DO output pin starting with
the MSB of the general-purpose counter.
See the item on the structure of the general-purpose
counter for details.
When the L/I-7 bit in the serial data is set to 0:
This pin functions as an input port. The value input is
output from the DO pin.
S
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