AMIS-30521 AMI Semiconductor, Inc., AMIS-30521 Datasheet - Page 2

• Manufacturer Part Number: AMIS-30521
• Description: Micro-stepping Motor Driver
• Manufacturer: AMI Semiconductor, Inc.

AMIS-30521 Micro-stepping Motor Driver
4.0 Block Diagram
5.0 Pin Description
Table 2: Pin List and Description
Name
DO
VDD
GND
DI
CLK
NXT
DIR
ERRB
SLA
CPN
CPP
VCP
CLR
CSB
VBB
MOTYP
GND
MOTYN
MOTXN
GND
MOTXP
VBB
/
TST0
AMI Semiconductor – June 2007, M-20683-001
www.amis.com
Pin
31
32
1
2
3
4
5
6
7
9
10
11
12
13
14
15, 16
17, 18
19, 20
21, 22
23, 24
25, 26
27
8, 28, 30
29
ERR
CLK
NXT
SLA
CLR
DIR
DO
CS
DI
PC20070322.1
Description
SPI data output
Logic Supply Input (needs external decoupling capacitor)
Ground, heat sink
SPI data in
SPI clock input
Next micro-step input
Direction input
Error Output
Speed Load Angle Output
Negative connection of charge pump capacitor
Positive connection of charge pump capacitor
Charge-pump filter-capacitor
“Clear” = Chip Reset input
SPI chip select input
High Voltage Supply Input
Negative end of phase Y coil output
Ground, heat sink
Positive end of phase Y coil output
Positive end of phase X coil output
Ground, heat sink
Negative end of phase X coil output
High Voltage Supply Input
No Function (to be left open in normal operation)
Test pin (to be tied to ground in normal operation) input
SPI
Figure 1: Block Diagram AMIS-30521
Timebase
Registers
Logic &
2
VDD
Temp.
Sense
Angle
Band-
POR
OTP
Load
gap
CPN CPP VCP
AMIS-30521
O
T
R
A
N
S
L
A
T
R
Chargepump
I-sense
I-sense
EMC
EMC
GND
W
M
W
M
P
P
VBB
MOTXP
MOTXN
MOTYN
MOTYP
Data Sheet