M38002M4 Datasheet, PDF (69/173 Pages) Mitsubishi Electric Semiconductor – 8-BIT SINGLE-CHIP MICROCOMPUTER

APPLICATION
2.2 Timer
Timer XY mode register (Address : 2316)
b7
b0
TM
10 11
Timer X operating mode bits : Pulse width measurement mode
CNTR0 active edge switch bit : Count “H” level width
Timer X count stop bit : Count stop
Set to “0” at starting to count.
Prescaler X (Address : 2416)
b7
b0
PREX
255
Timer X (Address : 2516)
b7
b0
Set “division ratio – 1”
TX
255
Interrupt control register 1 (Address : 3E16)
b7
b0
ICON1
1
Timer X interrupt enable bit : Interrupt enabled
Interrupt request register (Address : 3C16)
b7
b0
IREQ1
0
Timer X interrupt request bit
(This bit is set to “1” at underflow of Timer X.)
Interrupt control register 2 (Address : 3F16)
b7
b0
ICON2
1
CNTR0 interrupt enable bit : Interrupt enabled
Interrupt request register 2 (Address : 3D16)
b7
b0
IREQ2
0
CNTR0 interrupt request bit
(This bit is set to “1” at completion of inputting
“H” level signal.)
Fig. 2.2.21 Setting of related registers [Measurement of pulse width]
3800 GROUP USER’S MANUAL
2-21