Freescale Semiconductor M68HC08 series, Designer Reference Manual

Page: 29 / 124

Hardware Description
Slave Board
DRM047 — Rev 0 Designer Reference Manual
MOTOROLA Hardware Description 29
Figure 3-3. LIN Stepper (Slave) Board
CAUTION:
A slave board based on 908E625 can be even smaller than the LIN
Enhanced Stepper Board. The PCB from
Figure 3-3 is universal.
The sensor support - connector J4 and resistors R2, R1 from Figure A-2
are not populated. It ‘s because they are not used for current LIN Stepper
Controller with the LIN Stepper software.
Also the LED diode D1, R4 and headers J5, J6 are not necessary for
system functionality.
The PCB layout was designed as an universal LIN Enhanced Stepper
Board according the schematics in
Figure A-2 . It has some additional
sensor inputs. This could be used for some applications with a Hall
sensor or analog signal feedback.
The LIN Stepper Controller does not use any sensor feedback. The
schematics of the LIN Stepper Board s displayed in
Figure 3-4 . It uses
the LIN Enhanced Stepper Board PCB layout, but some components are
not populated.
J3 - Motor
J2 - Debugging
J2 - LIN
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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