Up/Down Counting; Up/Down Counting Operation - Panasonic MN103S User Manual

Chapter 9
16-bit Timer

9.6 Up/Down Counting

9.6.1

Up/Down Counting Operation

Up/down counting is the function that the binary counter counts up or down according to the condition of the
input pin.
Input Pin
Table: 9.6.1 shows the pins for up/down counting.
Table:9.6.1 Timer and Up/Down Counting Input Pin
Timer 8
Input pin TM8AIO
TM8BIO
When pins are used as up/down count input, the settings of the following registers are necessary.
Table:9.6.2 Setting Input Pin
TM8AIO
TM8BIO
TM9AIO
TM9BIO
TM10AIO
TM10BIO
TM11IO0
TM11IO1
IX - 48 Up/Down Counting
Timer 9 Timer 10
TM9AIO TM10AIO
TM9BIO TM10BIO
Port output mode register
P3MD(P36M)
P3MD(P37M)
P4MD(P42M)
P4MD(P43M)
P4MD(P46M)
P4MD(P47M)
P7MD(P72M)
P7MD(P73M)
Timer 11 Timer 12
TM11IO0 -
TM11IO1
Port I/O control register
P3DIR(P36D)
P3DIR(P37D)
P4DIR(P42D)
P4DIR(P43D)
P4DIR(P46D)
P4DIR(P47D)
P7DIR(P72D)
P7DIR(P73D)
Timer 13
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