20
3819 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS
Timer 1 count stop bit
0 : Operating
1 : Stopped
Timer 2 count stop bit
0 : Operating
1 : Stopped
Timer 1 count source selection bit
0 : f(X
IN
)/16 or f(X
CIN
)/16
1 : f(X
CIN
)
Not used (returns “0” when read)
Timer 2 count source selection bits
b5 b4
0 0 : Timer 1 underflow
0 1 : f(X
CIN
)
1 0 : External count input CNTR
0
1 1 : Not available
Timer 1 output selection bit (P4
6
)
0 : I/O port
1 : Timer 1 output
Not used (returns “0” when read)
b7
Timer 12 mode register
(T12M : address 0028
16
)
b0
Timer 3 count stop bit
0 : Operating
1 : Stopped
Timer 4 count stop bit
0 : Operating
1 : Stopped
Timer 3 count source selection bit
0 : f(X
IN
)/16 or f(X
CIN
)/16
1 : Timer 2 underflow
Not used (returns “0” when read)
Timer 4 count source selection bits
b5 b4
0 0 : f(X
IN
)/16 or f(X
)/16
0 1 : Timer 3 underflow
1 0 : External count input CNTR
1
1 1 : Not available
Timer 3 output selection bit (P4
7
)
0 : I/O port
1 : Timer 3 output
Not used (returns “0” when read)
Timer 34 mode register
(T34M : address 0029
16
)
b7
b0
Timer 5 count stop bit
0 : Operating
1 : Stopped
Timer 6 count stop bit
0 : Operating
1 : Stopped
Timer 5 count source selection bit
0 : f(X
IN
)/16 or f(X
CIN
)/16
1 : Timer 4 underflow
Timer 6 operation mode selection bit
0 : Timer mode
1 : PWM mode
Timer 6 count source selection bits
b5 b4
0 0 : f(X
IN
)/16 or f(X
CIN
)/16
0 1 : Timer 5 underflow
1 0 : Timer 4 underflow
1 1 : Not available
Timer 6 (PWM) output selection bit (P6
1
)
0 : I/O port
1 : Timer 6 output
Not used (returns “0” when read)
(do not write “1”)
b7
Timer 56 mode register
(T56M : address 002A
16
)
b0
Fig. FB-2 Structure of timer-related registers