Hardware Description
Slave Board
DRM047 — Rev 0
Designer Reference Manual
MOTOROLA
Hardware Description
33
3.2.4 Stepper Motor Dual H-bridge and High Side Switch
The bi-phase bipolar stepper motor is powered with four half-bridges.
They are attached to the connector J3. The connector pin 6 is high side
switch which can possibly be used for lamp on/off control
3.2.5 Power Supply and Decoupling
The LIN Stepper Controller is powered from LIN-bus connector. The
Power Die has internal voltage regulator with the outputs VDD(pin30)
and VSS (pin 40). This is used to power the analog VDDA,VSSA and
digital part EVDD,EVSS of the MCU chip. The connections and
capacitors C5, C4 were used for decoupling VDD,VSS_A from
VDD_A,VSS_A
10
In
PTB4/AD4
MON08 mode
Vdd = 5V
(via 10k resistor)
Table 3-1. Connector J2 Signals
Pin No
Input/
Output
Pin Name
Description
MON08 mode
Table 3-2. Connector J3 Signals
Pin No
Input/Output
Signal
range
1
GND
GND
GND
2
Out
HB1
motor phase 1-1
0-5V
3
Out
HB2
motor phase 1-2
4
Out
HB3
motor phase 2-1
0-5V
5
In
HB4
motor phase 2-1
6
In
High Side
0-5V
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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