AMIS-30522 Datasheet, PDF (2/29 Pages) AMI SEMICONDUCTOR – Micro-stepping Motor Driver

AMIS-30522
4.0 Block Diagram
VDD CPN CPP VCP VBB
CLK
CS
DI
SPI
DO
NXT
DIR
SLA
POR/WD
CLR
ERR
PC20070322.2
5.0 Pin Description
Timebase
Vreg
Chargepump
Logic &
Registers
POR
OTP
Load
Angle
Temp.
Sense
EMC
P
T
W
R
M
A
N
I-sense
S
L
A
T
EMC
O
P
R
W
M
I-sense
Band-
gap
AMIS-30522
GND
Figure 1: Block Diagram AMIS-30522
Table 2: Pin List and Description
Name
Pin
Description
DO
31
SPI data output (open drain)
VDD
32
Logic supply output (needs external decoupling capacitor)
GND
1
Ground, heat sink
DI
2
SPI data in
CLK
3
SPI clock input
NXT
4
Next micro-step input
DIR
5
Direction input
ERRB
6
Error output (open drain)
SLA
7
Speed load angle output
CPN
9
Negative connection of charge pump capacitor
CPP
10
Positive connection of charge pump capacitor
VCP
11
Charge pump filter-capacitor
CLR
12
“Clear” = chip reset input
CSB
13
SPI chip select input
VBB
14
High voltage supply Input
MOTYP
15, 16 Negative end of phase Y coil output
GND
17, 18 Ground, heat sink
MOTYN
19, 20 Positive end of phase Y coil output
MOTXN
21, 22 Positive end of phase X coil output
GND
23, 24 Ground, heat sink
MOTXP
25, 26 Negative end of phase X coil output
VBB
27
High voltage supply input
/
8, 30
No function (to be left open in normal operation)
PORB/WD
28
Power-on-reset (POR)and watchdog reset output (open drain)
TSTO
29
Test pin input (to be tied to ground in normal operation)
MOTXP
MOTXN
MOTYP
MOTYN
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