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參數(shù)資料
| 型號(hào)： | ASCELL3911 |
| 廠商： | AUSTRIAMICROSYSTEMS AG |
| 元件分類： | 通信及網(wǎng)絡(luò) |
| 英文描述： | ER 6C 6#16 SKT RECP LINE |
| 中文描述： | SPECIALTY TELECOM CIRCUIT, PDSO14 |
| 封裝： | TSSOP-14 |
| 文件頁數(shù)： | 7/13頁 |
| 文件大小： | 104K |
| 代理商： | ASCELL3911 |
ISM 868 MHz, 433 MHz and 315 MHz FSK Transmitter – Preliminary Data Sheet
ASCell3911
Rev. A, February 2000
Page 7 of 13
Austria Mikro Systeme International AG
The ASCell3911 WAKEUP pin is active and set to ”L”, holding the μC in reset state. In standby
mode the ASCell3911 WAKEUP internal pull-up is disabled and does not drain current from the
supply.
The ASCell3911 μC_CLK output is disabled, (in high resistive ”Z” state) and internally pulled up
to ”H”.
(Re)starting the transmitter:
Closing the push button (giving a falling edge on μC_CLK line)
starts up the ASCell3911. It turns on its XTAL oscillator and after the oscillator start up phase it
turns the μC_CLK pin to active (CMOS level) mode and provides a clock to the μC.
After a delay of 32 μC clock cycles the WAKEUP pin of the ASCell3911 is set to ”H” for 16 clock
cycles. The transmitter is now in active mode. The WAKEUP acts in ASCell3911 active mode
as an input waiting for a ”L” to trigger the transmission of the transmitter to standby mode
During this active mode the μC sends the 132 bit data (8 bit control and 16 * 8 bit data) on the
μC - P1 (Serial data out) line.
The timing of the microcontroller interface is shown in Figure 5. The microcontroller clocks a
134-bit
Data
into the ASCell3911 for data encoding. This data consists of 6
control
bits followed
by 128 transmit
data
bits. After the data bock has been completely transferred to the AS-
Cell3911, it starts up transmission, during which the I/Q modulator and power amplifier are pow-
ered up in order to transmit the encoded data. Transmission is done with respect to the control
bits. Table 2 shows the control bits set different operation modes of the chip.
wake up
T
ed
DATA
D_CLK
TX-State
t
P4
standby
active
transmission
standby
start
transmission
stop
transmission
T
wt
T
bit
D_EN
T
we
T
de
T
et
startup/reset μC
SMT
Figure 5:
μC interface timing for data transmission when ASCell3911 and μC are active.
Note:
Figure 4 shows the timing for the CMT-mode where the controller sets P4 to “L” and so the transmission stops. The
broken line shows the Signal P4 in the SMT mode where the ASCell3911 stops the transmission.
Control bit description:
bit#
Name
Comments
1
Quartz crystal (“CRYSTAL”):
L=13,5600 / 13,5672MHz
H=19,6875 MHz
2
Operating frequency range (“RANGE”):
L=315/433MHz,
H=868,3MHz
3
Duty cycle operation (“DCO”)
L = OFF
H = ON
4
Single / Continuous Message Transmission
(“SMT/CMT”)
L = SMT
H = CMT
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| ASD07H-12D15 | Isolated and Regulated 7 WATT Open Frame DC/DC Converter |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ASCELL3912 | 制造商:AMSCO 制造商全稱:austriamicrosystems AG 功能描述:ISM 868 MHz, 433 MHz and 315 MHz FSK Transmitter |
| ASCF21U | 制造商:ABRACON 制造商全稱:Abracon Corporation 功能描述:CERAMIC SURFACE-MOUNT 21.4MHz and 45MHz FUNDAMENTAL MONOLITHIC CRYSTAL FILTERS |
| ASCF21U15 | 制造商:ABRACON 制造商全稱:Abracon Corporation 功能描述:CERAMIC SURFACE-MOUNT 21.4MHz and 45MHz FUNDAMENTAL MONOLITHIC CRYSTAL FILTERS |
| ASCF21U20 | 制造商:ABRACON 制造商全稱:Abracon Corporation 功能描述:CERAMIC SURFACE-MOUNT 21.4MHz and 45MHz FUNDAMENTAL MONOLITHIC CRYSTAL FILTERS |
| ASCF21U30 | 制造商:ABRACON 制造商全稱:Abracon Corporation 功能描述:CERAMIC SURFACE-MOUNT 21.4MHz and 45MHz FUNDAMENTAL MONOLITHIC CRYSTAL FILTERS |
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