DA9012.001
25 August 2004
BLOCK DIAGRAMS
VDD
Output
Driver A
OUTA1
FSCXA
CWA
Glitch
Filter
OUTA2
OUTA3
OUTA4
Glitch
Filter
VDD
Output
Output
Driver A
Driver B
OUTA1
OUTB1
FSCX
FSCXB
CWB
Glitch
Glitch
Filter
OUTA2
OUTA3
OUTA4
OUTB2
OUTB3
OUTB4
Filter
CW
Glitch
Filter
Glitch
Filter
XRESET
XRESET
Glitch
Filter
Glitch
Filter
VSS
VSS
MAS9012A1
MAS9012A2
Figure 1. Block diagrams of single and dual output stepper motor driver ICs MAS9012A1 and MAS9012A2
VDD
Output
Driver A
OUTA1
FSCXA
CWA
Glitch
Filter
OUTA2
OUTA3
OUTA4
Glitch
Filter
VDD
Output
Output
Driver B
Driver A
OUTB1
OUTA1
FSCXB
CWB
FSCXA
CWA
Glitch
Filter
Glitch
Filter
OUTB2
OUTB3
OUTB4
OUTA2
OUTA3
OUTA4
Glitch
Filter
Glitch
Filter
Output
Output
Driver C
Driver B
OUTC1
OUTB1
FSCXC
CWC
FSCXB
CWB
Glitch
Filter
Glitch
Filter
OUTC2
OUTC3
OUTC4
OUTB2
OUTB3
OUTB4
Glitch
Filter
Glitch
Filter
Output
Output
Driver D
Driver C
OUTD1
OUTC1
FSCXD
CWD
FSCXC
CWC
Glitch
Filter
Glitch
Filter
OUTD2
OUTD3
OUTD4
OUTC2
OUTC3
OUTC4
Glitch
Filter
Glitch
Filter
XRESET
XRESET
Glitch
Filter
Glitch
Filter
MAS9012A4
VSS
VSS
MAS9012A3
Figure 2. Block diagrams of triple and quad output stepper motor driver ICs MAS9012A3 and MAS9012A4
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