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參數(shù)資料
| 型號： | AS3901 |
| 廠商： | AUSTRIAMICROSYSTEMS AG |
| 元件分類： | 通信及網(wǎng)絡(luò) |
| 英文描述： | ISM 433/315 MHz FSK/ASK Transmitter |
| 中文描述： | SPECIALTY TELECOM CIRCUIT, PDSO14 |
| 封裝： | TSSOP-14 |
| 文件頁數(shù)： | 6/18頁 |
| 文件大小： | 618K |
| 代理商： | AS3901 |
ISM 433/315 MHz FSK/ASK Transmitter – Data Sheet
AS3901
Rev. 6, August 2000
Page 6 of 18
AS3901
STDBY
DATA
TX/ASK
RESET
NRES
TX/ASK
uC
10k
Transmit
switch
SW
STDBY
I
O
O
I
DATA
I
CLK
CLK
I
I
O
O
O
Figure 2:
Interconnection of the AS3901 with a typical μC.
Note:
At room temperature, resistor values of
≈
10 k
are suggested for the μC interface.
For other temperatures to be calculated from figure 5.
TX/ASK
CLK
NRES
STDBY
standby
XTon
TX on
transmitting
3 clocks
standby
reset
uC
initPLLon
Figure 3:
μC interface timing for a transmission cycle.
Note:
microcontroller so that the transmission cycle remains unaffected by the duration the switch is pressed. The STDBY and
TX/ASK inputs have internal pullup resistors of ~100k
Activating the transmit switch results in a weak L state“ at TX/ASK. It can be overridden by the
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