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參數(shù)資料
| 型號： | AS8202 |
| 廠商： | AUSTRIAMICROSYSTEMS AG |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | TTP/C-C2 Communication Controller |
| 中文描述： | 2 CHANNEL(S), 25M bps, SERIAL COMM CONTROLLER, PQFP80 |
| 封裝： | PLASTIC, TQFP-80 |
| 文件頁數(shù)： | 8/10頁 |
| 文件大?。?/td> | 101K |
| 代理商： | AS8202 |
TTP/C-C2 Communication Controller
– Preliminary Data Sheet
AS8202
Rev. 1.0, October 2000
Page 8 of 8
Reset and Oscillator
Pin Name
xin0
xout0
xin1
xout1
plloff
resetb
mode
in
out
in
out
in
in
width
1
1
1
1
1
1
Comment
main oscillator input
main oscillator output
bus guardian oscillator input
bus guardian oscillator output
PLL disable
external reset
Table 1: Reset and Oscillator Ports
External Reset Signal
To issue a reset of the chip the resetb port has to be driven low for at least
power-up the reset must overlap the build-up time of the oscillator circuit.
Integrated Power-On Reset
The Device has an internal Power-On Reset generator. When supply voltage ramps up, the
internal reset signal is kept active (low) for about 33 μs typical.
Parameter
Symbol
supply voltage slope
dV/dt
power on reset active time after VDD > 1,0V
t
pon_res
Oscillator circuitry
The internal oscillator cell requires an external quartz or an external oscillator respectively. The
frequency applied on the main clock input (xin0, xout0) can be reduced by a factor of four by
using the internal PLL. In order to generate an internal frequency of 40 MHz using the internal
PLL, an external quartz or quartz oscillator with a frequency of 10 MHz is connected and the
plloff input is tied low. The bus guardian clock has no internal PLL.
Figure 4: Quartz Circuit PLL on
μ
s. After
Min
250
25
Typ
-
33
Max
-
49
Unit
kV/s
us
Figure 3: Quartz Circuit PLL off
Figure 5: Oscillator Circuit
xin0
xout1 xin1
10MHz
16MHz
AS8202
p
0‘
xout0
40 MHz
xin0
xout1 xin1
20MHz
16MHz
AS8202
p
1‘
xout0
20 MHz
xin0
xout1 xin1
40MHz
oscillator
16MHz
oscillator
AS8202
p
1‘
xout0
40 MHz
n.c.
n.c.
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相關代理商/技術參數(shù) |
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|---|---|
| AS8202NF | 制造商:AMS 功能描述:AS Series 3.3 V 2-Function SMT TTP-C2NF Communication Controller - LQFP-80 |
| AS8202NF_14 | 制造商:AMSCO 制造商全稱:austriamicrosystems AG 功能描述:TTP-C2NF Communication Controller |
| AS8202NF-ALQR | 制造商:AMSCO 制造商全稱:austriamicrosystems AG 功能描述:TTP-C2NF Communication Controller |
| AS8202NF-ALQT | 制造商:AMSCO 制造商全稱:austriamicrosystems AG 功能描述:TTP-C2NF Communication Controller |
| AS8202NF-ALQU | 制造商:AMSCO 制造商全稱:austriamicrosystems AG 功能描述:TTP-C2NF Communication Controller |
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