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AS8846 Datasheet(PDF) 9 Page - ams AG

Part # AS8846
Description  Programmable PWM DC Motor Driver / Controller
PDF  35 Pages
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Manufacturer  AMSCO [ams AG]
Direct Link  http://www.ams.com
Logo AMSCO - ams AG

AS8846 Datasheet(HTML) 9 Page - ams AG

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Data Sheet AS8446
Revision 1.8, Date 2005-03-17
Page 9 of 35
Wake-up system
Parameter
Pin type
Symbol
Min
Max
Unit
Note
Low Level Input Voltage
VIL
-8
0.4 * Vbat
V
High Level Input Voltage
VIH
0.6 * Vbat
Vbat
V
Input Hysteresis
HV AIO
VHYS
0.05 * Vbat
0.1 * Vbat
V
VIH - VIL
Table 9
Wake-up system signal parameter
Start up Behavior
Figure 4
Start up and sleep mode behavior of AS8446 (simplified timing)
Vbat
nPORraw
nPOR
VPok
Mcalib
Wake-up
(VDDraw)
(VDD)
(Charge
pump enable)
(calibration
ready)
14 V
4.3 V
5.0 V
100 us … 500 us
time is user defined by LIN wake up
200 us
Charge pump
start up
system enable
(normal work)
SPI sends 1 to
R17 (sleep)
sleep mode
300 us
t=t1
t
t2
t3
t4
t5
SPI communication possible
300 us
Sleep R17
not
defined
Failure R18
14 V
not defined
5.0 V
not
defined
Registers
R1 to R16
defined
(start-up)
defined by SPI and/or
failure detection units
not defined
sleep mode
new system
start-up
t= t1 +T
defined by SPI
first system start-up (connection of Vbat to the system)
defined
(start-up)
sleep mode
driver enable
RESET
5.0 V
4.3 V
4.3 V
20 us
possible RESET by watch dog
redefined
(start-up)
RESET by nPOR
RESET by nPOR



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