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參數(shù)資料
| 型號： | HPC467064EL20 |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | High-Performance microController with a 16k UV Erasable CMOS EPROM |
| 中文描述： | UVPROM, MICROCONTROLLER, CQCC68 |
| 封裝： | WINDOWED, LDCC-68 |
| 文件頁數(shù)： | 22/34頁 |
| 文件大?。?/td> | 415K |
| 代理商： | HPC467064EL20 |
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MICROWIRE/PLUS Application
Figure 25 illustrates a MICROWIRE/PLUS arrangement for
an automotive application. The microcontroller-based sys-
tem could be used to interface to an instrument cluster and
various parts of the automobile. The diagram shows two
HPC167064
microcontrollers
MICROWIRE peripherals. HPC167064 1 is set up as the
master and initiates all data transfers. HPC167064 2 is set
up as a slave answering to the master.
interconnected
to
other
The master microcontroller interfaces the operator with the
system and could also manage the instrument cluster in an
automotive application. Information is visually presented to
the operator by means of a LCD display controlled by the
COP472 display driver. The data to be displayed is sent
serially to the COP472 over the MICROWIRE/PLUS link.
Data such as accumulated mileage could be stored and re-
trieved from the EEPROM COP494. The slave HPC167064
could be used as a fuel injection processor and generate
timing signals required to operate the fuel valves. The mas-
ter processor could be used to periodically send updated
values to the slave via the MICROWIRE/PLUS link. To
speed up the response, chip select logic is implemented by
connecting an output from the master to the external inter-
rupt input on the slave.
TL/DD/11046–32
FIGURE 24. MICROWIRE/PLUS
TL/DD/11046–33
FIGURE 25. MICROWIRE/PLUS Application
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