3820_03 Datasheet, PDF (307/349 Pages) Renesas Technology Corp – 8-BIT SINGLE-CHIP MICROCOMPUTER

APPENDIX
3.3 Control registers
Timer Y mode register
b7 b6 b5 b4 b3 b2 b1 b0
Timer Y mode register (TYM) [Address 2816]
B
Name
Functions
At reset R W
0 ^{Nothing is allocated. These bits cannot be written}
to ^{and are fixed to “0” at reading.}
3
0 0^×
4 Timer Y operating
mode bits
b5b4
0 0 : Timer mode
0 1 : Period measurement mode
0
5
1 0 : Event counter mode
1 1 : Pulse width HL continuously
0
measurement mode
6
CNTR1 active edge
switch bit
•CNTR1 interrupt
0 : Falling edge active
1 : Rising edge active
0
•Period measurement mode
0 : Measure falling edge to
falling edge
1 : Measure rising edge to
rising edge
•Event counter mode
0 : Rising edge active
1 : Falling edge active
7 Timer Y stop control 0 : Count start
0
bit
1 : Count stop
Fig. 3.3.10 Structure of timer Y mode register
3–22
3820 GROUP USER’S MANUAL