AS8221 데이터 시트보기 (PDF) - austriamicrosystems AG
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AS8221 Datasheet PDF : 42 Pages
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AS8221
Datasheet - Electrical Characteristics
Table 3. Electrical Characteristics
Symbol
Parameter
tRxD_RISE
Rise time RxD voltage
tBUSIdleDetection
tBUSActivityDetection
tBUSIdleReaction
tBUSActivityReaction
Wake-Up Detector
tBWU_D0
tBWU_Idle
tBWU_Detect
VBWUTH
VLWUTH
Idle detection time
Activity detection time
Idle reaction time
Activity reaction time
Data0 detection time in remote
wake-up pattern
Idle or Data1 detection time in
remote wake-up pattern
Total remote wake-up detection
time
Bus wake-up detection threshold
Local wake-up detection
threshold
ILWUL
Low level input current on local
WAKE pin
ILWUH
High level input current on local
WAKE pin
tLWUFilter
Supply Voltage Monitor
Local wake filter time
VBATTHH
VBAT undervoltage recovery
threshold
VBATTHL
VBAT undervoltage detection
threshold
VCCTHH
VCC under-voltage recovery
threshold
VCCTHL
VCC undervoltage detection
threshold
VIOTHH
VIO undervoltage recovery
threshold
VIOTHL
VIO undervoltage detection
threshold
tUV_DETECT
Detection time for undervoltage
at VBAT, VCC, VIO
tUV_REC
Bus Error Detection
Detection time for undervoltage
recovery at VBAT, VCC, VIO
ITHL
Absolute bus current for low
current detection
ITHH
Absolute bus current for high
current detection
Conditions
20% - 80% of VRxD;
CRxD=15 pF
(see footnote 3)
VBUS: 400mV 0V
VBUS: 0V 400mV
VBUS: 400mV 0V
VBUS: 0V 400mV
-10V < (VBP, VBM) < 15V
-10V < (VBP, VBM) < 15V
-10V < (VBP, VBM) < 15V
-10V < (VBP, VBM) < 15V
VBAT = 12V; VLWAKE = 2V for
t < tLWUFilter
VBAT = 12V; VLWAKE = 4V for
t < tLWUFilter
NORMAL mode,
Transmitter enabled
NORMAL mode,
Transmitter enabled
Min
Typ
Max Units
2
5
ns
50
173
200
ns
100
173
250
ns
50
192
300
ns
100
200
350
ns
1
2
4
µs
1
2
4
µs
48
73
140
µs
-300 -250 -150
mV
2
2.8
4
V
-20
-10
-5
µA
5
11
20
µA
1
20
40
µs
3.5
4
4.5
V
2.5
3
3.5
V
3.5
4
4.5
V
2.5
3
3.5
V
1.25
1.6
2.0
V
0.75
1.1
1.5
V
100
300
700
ms
0.7
2
5
ms
5
mA
40
mA
www.austriamicrosystems.com/flexray/AS8221
Revision 1.7
10 - 42
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