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參數(shù)資料
| 型號： | AS2702-20T |
| 廠商： | AUSTRIAMICROSYSTEMS AG |
| 元件分類： | 其它接口 |
| 英文描述： | AS-Interface Slave IC |
| 中文描述： | SPECIALTY INTERFACE CIRCUIT, PDSO20 |
| 封裝： | SOIC-20 |
| 文件頁數(shù)： | 12/18頁 |
| 文件大小： | 119K |
| 代理商： | AS2702-20T |
AS-Interface Slave IC
AS2702 (SAP4.1)
Rev. C, January 2001
Page 12 of 18
The dc- and timing parameters of strobe pin PSTBn are specified as follows:
6\PERO
IOUTLO
IOUTHI
IINLO
VSCHLT
VIN
3DUDPHWHU
Sink current @ output L
Leakage current @ output off
Input current @ VIN = 1V
Input threshold voltage
Acceptable input voltage @ out-
put off
PSTBn L-phase width, not trig-
gering testmode
PSTBn L-phase width, triggering
testmode
Stray capacitance
PLQ
10
- 10
- 5
1.5
- 0.3
PD[
8QLW
mA
μA
μA
1RWH
VOUT = 1V
VOUT = 5V
1
2
10
- 20
3.5
40
V
V
tNOTM
35
μs
tTM
50
μs
CPINEXT
20
pF
Notes:
1
PSTBn is equipped with an on-chip pull-up current source, which ensures
a sufficiently fast LH-edge upon output switch-off in open-pin condition, to prevent
erroneous testmode triggering.
If PSTBn has an external load connected to it, an additional external pull-up resistor
may be needed to prevent erroneous testmode triggering upon output switch-off
No hysteresis implemented
2
2SHUDWLRQVWDWXVSLQV/('DQG/('
Pins LED1 and LED2 are both equipped with a low-side open-drain output switch plus a pas-
sive high-side current source with a nom. 10 μA pull-up current capability. They will each have
an LED load connected to UOUT, which will flag the operation status of the slave device, ac-
cording to the following table:
2XWSXW/('
2XWSXW/('
)ODJJLQJ3ULRULW\
6ODYH'HYLFH
2SHUDWLRQ6WDWXV
5HDVRQ
JUHHQ/('
FRQQHFWHG
off
on
off
UHG/('FRQ
QHFWHG
KLJKHVW
ORZHVW
off
off
on
Supply voltage off
Regular operation
No Data
Communication
No supply voltage
4
Regular, non-zero
slave address coded;
data comm. watchdog
triggered
Slave address = de-
fault zero
Input PFAULT = L
blinks
on
3
No regular slave
address coded
Hardware failure in
sensor / acuator
circuitry
External RESET or
Overload at UOUT
pin
blinks
blinks
(alternating with
LED1)
blinks
2
off
1
DSTBn = L to RESET,
or UOUT switched-off
due to overload
(LED1 and LED2 both also feature an input stage, to simplify component test and shorten test
time of the slave device.)
The dc- and timing parameters of pins LED1 and LED2 are specified as follows:
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