Detailed Design Description; Jack Connector J3 Signal Descriptions - Motorola M68HC08 Manual

Hardware Design

5.2 Detailed Design Description

5.2.1 Microcontroller with Logic
Designer Reference Manual
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user interface used, connected to the header J3. Pin assignments are
described in Table 5-5. Jack Connector J3 Signal
Table 5-5. Jack Connector J3 Signal Descriptions
Pin No. Signal Name
1 Speed Pot
2 Run/Stop Switch
3 PTA4
4 PTA3
+5V
5
DC
6 GND
Circuit descriptions for the 3-phase BLDC drive appear in this chapter.
Microcontroller with output logic sensing is discussed in
Microcontroller with
Hall Sensor Interface. The user's interface and Bootloader interface is
shown in 5.2.3 User's Interface and
3-phase H-bridge is looked at in
over-current feedback is discussed in
on-board power supply appears in
The microcontroller is the brain of the application. It evaluates the user
interface signals, Hall sensor signals, and DC-Bus voltage, generating
six signals for 3-phase H-bridge. The topology is shown in
5-3. Microcontroller with
The individual interface signals are wired to the MCU as shown in
5-6. Connection of Signals to
Hardware Design
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Analog speed reference 0-5V
Run enable
Port A pin 4 configured as ADC2
Port A pin 3 configured as GPIO
+5V power supply
DC
ground
Logic. Hall senor interface is highlighted in
Bootloader. One phase leg of the
5.2.5 3-Phase H
5.2.6 Current
5.2.7 Power
Logic.
MCU.
Descriptions.
Description
5.2.1
5.2.2
Bridge. DC-Bus
Sensing. Finally,
Supply.
Figure
Table
DRM046 — Rev 0
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