4518 Datasheet, PDF (43/160 Pages) Renesas Technology Corp – SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER

4518 Group
CNTR1 output auto-control circuit by timer 3 is selected.
q CNTR1 output: valid (W43 = “1”)
CNTR1 output auto-control circuit selected (W61 = “1”)
PWM
signal
Timer 3 underflow signal
CNTR1 output
Timer 3 start
CNTR1 output start
q CNTR1 output auto-control function
PWM
signal
Timer 3 underflow signal
Timer 3 start
➀
➁
Timer 3
stop
Register W61
➂
CNTR1 output
CNTR1 output start
CNTR1 output stop
➀ ^{When the CNTR1 output auto-control function is set to be invalid while the CNTR1 output is invalid,}
the CNTR1 output invalid state is retained.
➁ ^{When the CNTR1 output auto-control function is set to be invalid while the CNTR1 output is valid,}
the CNTR1 output valid state is retained.
➂ When timer 3 is stopped, the CNTR1 output auto-control function becomes invalid.
Fig. 32 CNTR1 output auto-control function by timer 3
Rev.3.01 2005.06.15 page 43 of 157
REJ03B0008-0301