参数资料
型号: MB89T635P-SH
元件分类: 微控制器/微处理器
英文描述: 8-BIT, 10 MHz, MICROCONTROLLER, PDIP64
封装: SHRINK, DIP-64
文件页数: 129/153页
文件大小: 7326K
代理商: MB89T635P-SH
MB89630 SERIES HARDWARE MANUAL
2-54
(6) Others
The counter is in the operation-enable state even after the end of measurement, so continuous pulse-
width measurement is enabled. The High width measurement is started from the changing edge of
the input pulse. If the input pulse is already High, enable the EN bit (0
%1) to perform counting after
the next rising edge occurs.
(5) Precautions for use
(a) When the EN bit is 1 (during timer operation or pulse-width measurement), do not rewrite the con
tents of the PCR2.
(b) When the mode is switched (the FC bit is rewritten), the state of each flag does not change. There
fore, clear each flag immediately after switching the mode.
(c) Read the measured value before the next underflow occurs. If the value is read after an underflow
occurs, the TO bit is reversed, sometimes disabling calculation of the correct measured value.
(d) If the previous measured value cannot be read after continuous pulse-width measurement, hold
the previous measured value without transferring the new one to the buffer.
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