參數(shù)資料
型號(hào): MC68HC708MP16
廠(chǎng)商: Motorola, Inc.
英文描述: 8-Bit Microcontroller Units (MCU).(8位微控制器)
中文描述: 8位微控制器單元(MCU)。(8位微控制器)
文件頁(yè)數(shù): 2/44頁(yè)
文件大?。?/td> 342K
代理商: MC68HC708MP16
Application Note
AN1712
2
MOTOROLA
applications. As more control loops are implemented digitally, control
techniques which would have been difficult or impossible with analog
circuitry (such as adaptive control) are becoming commonplace.
Smarter fault management, variable frequency waveform generation,
and communications with other systems are all benefits brought to the
motor control arena by the microcontroller. Also, feature enhancements
on motor drives in production can often be handled by software
upgrades without having to "rev" the board layout. In fact, one
manufacturer of motor drives cleverly manages its inventory by building
a hardware unit which is used across several drive products. Different
control software running on this common hardware platform
distinguishes one product from another.
Once the decision has been made to use a microcontroller in a motor
control system, the engineer is faced with the formidable task of
selecting which one is best suited for the job. In many cases, for
instance, the CPU may be ideally suited for the particular motion control
task, but important features are missing in the embedded peripherals,
forcing the designer to add more hardware to compensate for the
deficiency. Or perhaps the peripherals are just right for the application,
but the CPU is oversized or lacking in development support. In many
cases, the designer settles on a DSP (digital signal processing) solution,
only to find that it executes the digital filters with time to spare, but is
difficult to program for the rest of the routines. In fact, many engineers
have related that more than 90% of their motor control code is "non-
DSP" related, and that the CPU’s data management features can be
more important than its DSP features.
If you have struggled with any or all of these issues, then please read on.
Engineers at Motorola have "come together, right now" to address these
concerns with the new MC68HC708MP16, which can get just about any
motor running (unless it runs on gasoline, in which case you're reading
the wrong paper). The 'MP16 has been specifically designed to meet the
requirements for low-cost DC servo and AC "open loop" systems (see
Figure 1
).
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