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參數(shù)資料
| 型號(hào)： | AS2701 |
| 廠商： | AUSTRIAMICROSYSTEMS AG |
| 英文描述： | AS-Interface Slave IC |
| 中文描述： | AS - Interface的奴隸集成電路 |
| 文件頁(yè)數(shù)： | 12/16頁(yè) |
| 文件大?。?/td> | 180K |
| 代理商： | AS2701 |
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AS-Interface Slave IC
AS2701A (ISA3+)
Rev. C, October 2000
Page 12 of 16
Reset Behaviour
The AS-Interface Slave IC can be in reset condition or reset by the following events:
at power-up of VLTGP: as long as VUOUT has not yet reached the treshold voltage
9 V
≤
VCOMOFF
≤
11 V;
at power-down of VLTGP: as soon as U5R drops below the treshold voltage
3.5 V
≤
VPOR
≤
4 V;
by a 'L' input level to DSTBn for more than 44 μs;
resulting from a “Reset AS-Interface Slave“- command by the AS-Interface Master
over the AS-Interface BUS.
The different levels of VCOMOFF and VPOR as per a) and b) and the fact that the U5R supply
voltage results from a down-regulation of the VUOUT supply assure a desirable hysteresis in
the order of several volts between the VUOUT power-on-reset and power-down-reset
threshold. Whereas at power-up the AS-Interface Slave IC is released from reset by VUOUT
reaching a level of between 9 V and 11 V, at power-down VUOUT has to come down to a level
in the order of 5 V for U5R to drop into the reset-triggering window between 3.5 V and 4 V.
Some different power-down events are illustrated below:
t
Loff
1
VLTGP
18 V
0 V
POR
(internal signal)
neither receive
nor transmit
2
(no reset)
VUOUT
VCOMOFF
VUOUT
VCOMOFF
VU5R
VPOR
(reset)
3
Notes:
as to (1):
as to (2):
No reset will be triggered, if VLTGP is lower than 18 V for less than 1 ms
If VUOUT < VCOMOFF but still U5R > VPOR, communication over the Data
Port is inhibited, but no reset triggered
If U5R < VPOR (resulting from VUOUT << VCOMOFF), a reset is triggered.
Reset is overcome as soon as VUOUT > VCOMOFF (implying U5R > VPOR)
as to (3):
In reset condition internal registers are cleared and data port D0...D3 is switched into high-
impedant condition. After release from reset the AS-Interface Slave automatically performs a
first read cycle to clear the E
2
PROM from any previously interrupted communication state and
a second one to load the AS-Interface address, IO Configuration and ID Code into its internal
registers.
Symbol
t reset
Parameter
Reset Time after the Master
Command “Reset AS-Interface Slave”
or DSTBn = ext. L/H-Edge
Reset Time after Power On
Reset Time after Power On with great
Load Capacity
Voltage Breakdown Time
Voltage for “Communication OFF”
Voltage for Internal Reset
min
max
2
Unit
ms
Note
t reset2
t reset3
30
1000
ms
ms
CUOUT = 470 μF
t Loff
VCOMMoff
VPOR
1
11
4
ms
V
V
CUOUT > 10 μF
9
3.5
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AS2701A | AS-Interface Slave IC |
| AS2701AT | AS-Interface Slave IC |
| AS2702-16 | Actuator sensor interface; Package Type: SOIC-300-16 |
| AS2702-20 | Actuator sensor interface; Package Type: SOIC-20 |
| AS2702 | AS-Interface Slave IC |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AS2701A | 制造商:AMSCO 制造商全稱:austriamicrosystems AG 功能描述:AS-Interface Slave IC |
| AS2701AT | 制造商:AMSCO 制造商全稱:austriamicrosystems AG 功能描述:AS-Interface Slave IC |
| AS2702 | 制造商:AMSCO 制造商全稱:austriamicrosystems AG 功能描述:AS-Interface Slave IC |
| AS2702/SOIC16-SAMPLE | 制造商:AMS 功能描述:AS Series 22.5 to 34 V Surface Mount AS-Interface Slave SOIC-16 |
| AS2702_1 | 制造商:AMSCO 制造商全稱:austriamicrosystems AG 功能描述:AS-Interface Slave IC |
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