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FUJITSU F2MC-8L F202RA User Manual

Page 202

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CHAPTER 8 8/16-BIT CAPTURE TIMER/COUNTER

Figure 8.6-2 Setting of Interval Timer Function (Timer 1)

When the counter is activated in the 8-bit mode, increment begins at the rising or falling edge of the

selected clock, starting at 00

H

. When the counter value matches the value set in the data register

(comparator data latch), the interrupt request bit (TCR0: TIF0 or TCR1: TIF1) of the timer 0 control

register is set to "1" and the count operation is started at 00

H

. If the counter value matches the value set in

the data register when timer 0 is being used, the output of the square wave output control circuit toggles.

When square wave output is allowed (TCR2: PEN) and timer 0 is set to output selection (TCR2: TSEL =

0), a square wave is output from the timer output pin (TO). If the counter value matches the value set in the

data register when timer 1 is being used, the output of the square wave output control circuit toggles. When

square wave output is allowed (TCR2: PEN) and timer 1 is set to output selection (TCR2: TSEL = 1), a

square wave is output from the timer output pin (TO).

Figure 8.6-3 shows interval timer function operation in the 8-bit mode.

bit7

bit6

bit5

bit4

bit3

bit2

bit1

bit0

TCCR

CPIF

CFCLR CPIEN CCMSK TCMSK EDGS1 EDGS0 RESV

TCR1

TIF1

TFCR1 T1IEN

TCS12 TCS11 TCS10 TSTR1

TCR0

TIF0

TFCR0 T0IEN

CINV

TCS02 TCS01 TCS00 TSTR0

TCR2

PEN

TSEL

TDR1

: Used bit

: Unused bit

Setting of 00

Setting of a value

other than 111

Setting of interval time

Setting of a value

other than 111

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