參數(shù)資料
型號: S1C60N01F
元件分類: 微控制器/微處理器
英文描述: 4-BIT, MROM, 0.08 MHz, MICROCONTROLLER, PQFP48
封裝: PLASTIC, QFP12-48
文件頁數(shù): 45/153頁
文件大?。?/td> 901K
代理商: S1C60N01F
S1C60N01 TECHNICAL SOFTWARE
EPSON
II-51
CHAPTER 4: SUMMARY OF PROGRAMMING POINTS
Input Port
– When modifying the input port from high level to low level
with pull-down resistance, a delay will occur at the rise of
the waveform due to time constant of the pull-down
resistance and input gate capacities. Provide appropriate
waiting time in the program when performing input port
reading.
– Input interrupt programing related precautions
When the content of the mask register is rewritten, while
the port K input is in the active status. The input interrupt
factor flag is set at .
When using an input interrupt, if you rewrite the content
of the mask register, when the value of the input terminal
which becomes the interrupt input is in the active status
(input terminal = high status), the factor flag for input
interrupt may be set.
For example, a factor flag is set with the timing of
shown in Figure 4.1. However, when clearing the content
of the mask register with the input terminal kept in the
high status and then setting it, the factor flag of the input
interrupt is again set at the timing that has been set.
Consequently, when the input terminal is in the active
status (high status), do not rewrite the mask register
(clearing, then setting the mask register), so that a factor
flag will only set at the rising edge in this case. When
clearing, then setting the mask register, set the mask
register, when the input terminal is not in the active
status (low status).
Fig. 4.1
Input interrupt timing
Output Port
The FOUT and BUZZER output signal may produce
hazards when the output ports R00 and R01 are turned
on or off.
Port K input
Factor flag set Not set
Mask register
Active status
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