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AS8846 数据表(PDF) 4 Page - ams AG

部件名 AS8846
功能描述  Programmable PWM DC Motor Driver / Controller
PDF  35 Pages
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制造商  AMSCO [ams AG]
网页  http://www.ams.com
标志 AMSCO - ams AG

AS8846 数据表(HTML) 4 Page - ams AG

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Data Sheet AS8446
Revision 1.8, Date 2005-03-17
Page 4 of 35
Pin Description
The AS8446 Motor Driver/Controller contains the
driver/controller chip in a SOIC28 package
The complete PWM DC Motor Regulator board needs an
additional
µP to close the regulation loop and control the
whole regulator (dual package solution, free choice of the
controlling
µP).
Pinout AS8446
Figure 1
Pinout AS 8446
Pin Description AS8446, Pin Types
S
… power supply
AI
… analog in
AO
… analog out
AIO
… analog in/out
DI
… digital in
DIPU
… digital in with pull-up
DIPD
… digital in with pull-down
DO
… digital out
DIO
… digital in/out
DO_T
… digital out, tristate
LV
… low voltage
HV
… high voltage
Pin Name
Type
Note
1
CMN
HV AI
Current Measurement Input
(negative side)
2
CMP
HV AI
Current Measurement Input
(positive side)
3
VMO
HV AI
Motor Voltage Input
4
Vbat
S
Battery Voltage, Main Supply
5
TP
HV AI
Temperature Sensor Input
6
FAIL
LV DO
Error Status Output of
AS8446
7
CS
LV DIPU
Chip Select, Enable Pin of
Three Wire Interface
8
ADC
HV AO
Analog Measurement Output
(multiplexed)
9
Wake-up HV AIO
Wake-up Pin
10
n.c.
11
Tst 1
LV DIPU
Test Pin 1 (1)
12
Tst 2
LV DO
Test Pin 2 (2)
13
DATAin
LV DIPD
Data Input of the Three-Wire
Interface
14
DATAout LV DO_T Data Output of the Three-
Wire Interface
15
Clk
LV DIPD
Clock of the Three-Wire
Interface
16
PWM
LV DIPU
PWM Input (Control of the
Power FET Driver)
17
Tst 3
LV DO
Test Pin 3 (2)
18
WD
LV DIPU
Watch Dog Input
19
RESET
LV DO
Reset Output (controlled by
Watch Dog)
20
Iref
LV AIO
Reference Current Pin
21
VDD
AI
VDD feedback input
22
VDDctrl
HV AO
VDD supply (5 V generated
by the on chip voltage
regulator)
23
CP1
HV AIO
Charge Pump Capacitor (Vbat
side)
24
CP2
HV AIO
Charge Pump Capacitor
(Vpump side)
25
Vpump
AO
Charge Pump Buffer
Capacitor
26
OUT
HV AO
Power FET Driver Output
27
GND_P
S
Power Ground
28
VSS
S
Digital/Analog Ground
Table 2
PIN description of AS 8446
Note (1) Must be connected to VDD
Note (2) Must be left open
TP
Wake-Up
Vbat
VSS
Iref
VDDctrl
VDD
CP2
CP1
Vpump
OUT
GND_P
CS
CMP
DATAout
CMN
FAIL
PWM
25
26
24
23
22
21
20
19
18
17
16
Clk
DATAin
Tst 1
Tst 2
27
28
RESET
1
15
2
3
4
5
6
7
8
9
10
11
12
13
14
VMO
ADC
WD
Tst 3
n.c.



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