Panasonic MN103S

Chapter 9
16-bit Timer
Input Capture IX - 63
9.9 Input Capture
9.9.1 Input Capture Operation
Input capture function reads the value of the binary counter into the compare/capture register at the trigger set by
the external input signal (both edge, rising edge, falling edge).
■ Setting Input Capture
Set the TMACE flag of the timer compare/capture mode register to “1” to enable capture operation. Select
whether to capture at the both edge or single edge of the input signal by the TMAM1-0 flag. If the single edge is
selected, select the falling edge or rising edge by the TMAEG flag.
■ Setting Input Pin
Table: 9.9.1 shows the pins which can use input capture operation.
Table:9.9.1 TImer and Input Capture Input Pin
When pins are used as input capture operation, the settings of the registers in the following table are necessary.
Table:9.9.2 Setting Input Pin
■ Count TIming of Input Capture
Table: 9.9.1 shows the timing that the value of the binary counter is read into the compare/capture register at the
both edge of the input signal.
Timer 8 Timer 9 Timer 10 Timer 11 Timer 12 Timer 13
Input pin TM8AIO
TM8BIO
TM9AIO
TM9BIO
TM10AIO
TM10BIO
TM11IO0
TM11IO1
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Port output mode register Port I/O control register
TM8AIO P3MD(P36M) P3DIR(P36D)
TM8BIO P3MD(P37M) P3DIR(P37D)
TM9AIO P4MD(P42M) P4DIR(P42D)
TM9BIO P4MD(P43M) P4DIR(P43D)
TM10AIO P4MD(P46M) P4DIR(P46D)
TM10BIO P4MD(P47M) P4DIR(P47D)
TM11IO0 P7MD(P72M) P7DIR(P72D)
TM11IO1 P7MD(P73M) P7DIR(P73D)