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ML610471/472/473/Q471/Q472/Q473 User's Manual
Chapter 9 Timer
9-11
9.2.9 Timer 3 Control Register 1 (TM3CON1)
Address: 0F03FH
Access: R/W
Access size: 8-bit
Initial value: 00H
7 6 5 4 3 2 1 0
TM3CON1 T3STAT — — — — — — T3RUN
R/W R R/W R/W R/W R/W R/W R/W R/W
Initial value 0 0 0 0 0 0 0 0
TM3CON1 is a special function register (SFR) to control the Timer 3.
[Description of Bits]
•
T3RUN (bit 0)
The T3RUN bit is used for controlling stop/start of timer 3.
In 16-bit timer mode and 16-bit timer frequency measurement mode, be sure to set this bit to “0”. Regardless of
the T3RUN value, the Timer 3 counts up by the Timer 2 overflow signal.
In 16-bit timer frequency measurement mode, be sure to set this bit to “0” also.
T3RUN Description
0 Stops counting.
1 Starts counting.
•
T3STAT (bit 7)
The T3STAT bit is used for indicating “counting stopped”/”counting in progress” of timer 3.
In 16-bit timer mode and 16-bit timer frequency measurement mode, this bit will return “0”.
T3STAT Description
0 Counting stopped.
1 Counting in progress.