AMIS-30421 Datasheet, PDF (3/41 Pages) ON Semiconductor – Micro-Stepping Stepper Motor Bridge Controller

AMIS−30421
Table 1. PIN LIST AND DESCRIPTION
Name
Pin
Description
GXBL
2
Gate of external NMOS FET of the X bridge bottom left side
MOTXP
3
Positive end of phase X−coil
GXTL
4
Gate of external NMOS FET of the X bridge top left side
GXBR
5
Gate of external NMOS FET of the X bridge bottom right side
MOTXN
6
Negative end of phase X−coil
GXTR
7
Gate of external NMOS FET of the X bridge top right side
RSENSXP
8
Resistor sense of the X bridge positive pin
RSENSXN
9
Resistor sense of the X bridge negative pin
VDD
10
Low voltage supply output (needs external decoupling capacitor)
GND
11
Ground, heat sink
VREGH
13
High voltage supply output
SLA
14
Speed and Load Angle output
ERRb
15
Error output
CLR
16
Clear input
WDb
17
Watchdog and Power On Reset output
CLK
18
SPI Clock input
CSb
19
SPI Chip Select input
DI
20
SPI Data input
DO
21
SPI Data output
TEST
22
Test input. To be tied to ground.
NXT
23
Next Microstep input
DIR
24
Direction input
RSENSYN
25
Resistor sense of the Y bridge negative pin
RSENSYP
26
Resistor sense of the Y bridge positive pin
GYTR
27
Gate of external NMOS FET of the Y bridge top right side
MOTYN
28
Negative end of phase Y−coil
GYBR
29
Gate of external NMOS FET of the Y bridge bottom right side
GYTL
30
Gate of external NMOS FET of the Y bridge top left side
MOTYP
31
Positive end of phase Y−coil
GYBL
32
Gate of external NMOS FET of the Y bridge bottom left side
GND
37
Ground, heat sink
VBB
38
High voltage supply input
CPN
39
Negative connection of charge pump capacitor
CPP
40
Positive connection of charge pump capacitor
VCP
41
Charge Pump filter capacitor
GND
42
Ground, heat sink
NC
1, 12, 33, Not connected or connect with ground
34, 35,
36, 43,
44
NOTE: Output type of WDb−, ERRb− and DO−pin is selectable through SPI
Type
Analog Output
Analog I/O
Analog Output
Analog Output
Analog I/O
Analog Output
Analog Input
Analog Input
Supply
Supply
Analog output
Analog output
Digital Output
Digital Input
Digital Output
Digital Input
Digital Input
Digital Input
Digital Output
Digital Input
Digital Input
Digital Input
Analog Input
Analog Input
Analog Output
Analog I/O
Analog Output
Analog Output
Analog I/O
Analog Output
Supply
Supply
Analog I/O
Analog I/O
Analog I/O
Supply
Equivalent
Schematic
Type 7
Type 6
Type 2 or 4
Type 1
Type 2 or 4
Type 1
Type 3
Type 1
Type 2 or 4
Type 1
Type 1
Type 1
Type 8
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