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Motorola M68HC08 User Manual

Page 19

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System Description

System Specification

DRM028 — Rev 0

Designer Reference Manual

MOTOROLA

System Description

19

2.3.2 Hardware and Drive Specifications

The other system specifications are determined by hardware boards and
motor characteristics. The boards and their connections are shown in

Section 4. Hardware Design

. and

Section 6. User Guide

,

6.4.1

Hardware Configuration

. The hardware set specifications are

discussed in the following subsections.

2.3.2.1 High-Voltage Hardware Set Specification

This hardware set is dedicated for medium power (phase current <
2.93 A) and main voltage. The specifications for a high-voltage hardware

Minimal BLDC

Motor

Commutation

Period (with PC

Master Software

Control)

520

µs (with default software setting and COEF_HLFCMT =

0.450)

Targeted

Hardware

Software is prepared to run on three optional board and

motor hardware sets:
• High-voltage hardware set at variable line voltage
115–230 Vac

(software customizing file const_cust_hv.h)

• Low-voltage evaluation motor hardware set

(software customizing file const_cust_evmm.h)

• Low-voltage hardware set (software customizing file

const_cust_lv.h)

Software

Configuration

and Parameters

Setting

Configuration to one of the three required hardware sets is

provided by inclusion of dedicated software customizing
files. The software pack contains the files const_cust_hv.h,
const_cust_lv.h, and const_cust_evm.h with predefined
parameter settings for running on one of the optional board
and motor hardware sets. The required hardware must be
selected in code_fun.c file by one of these files #include.

Where software is configuration for different customer

motors, the software configuration for any motor is
provided in the dedicated customizing file, according to the
hardware board used.

PWM frequency 15.626 kHz with default software setting,

possibly changeable in const.h file

Table 2-1. Software Specifications

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Freescale Semiconductor, Inc.

For More Information On This Product,

Go to: www.freescale.com

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