Motorola M68HC08 User Manual
Page 19
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
. 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
F
re
e
sc
a
le
S
e
m
ic
o
n
d
u
c
to
r,
I
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
c
.
..