4513_03 Datasheet, PDF (140/210 Pages) Renesas Technology Corp – 4-BIT SINGLE-CHIP MICROCOMPUTER

Processing in interrupt service routine
“ Stop Timer
Timer 1 control disabled Interrupt control register I1
b3
b0
!10 0
APPLICATION
2.3 Timers
(TI1A instruction)
” Reset Timer
Timer 1 reload register R1 “5216”
Timer 1 control enabled Interrupt control register I1
(TI1A instruction)
Timer count value 82 set (T1AB instruction)
b3
b0
!1 0 1
“!”: it can be “0” or “1.”
Fig. 2.3.8 Timer start by external input setting example (2)
4513/4514 Group User’s Manual
2-37