FUJITSU F2MC-8L F202RA - Manual (Page 189)

173
CHAPTER 8 8/16-BIT CAPTURE TIMER/COUNTER
8.4.2 Timer 0 Control Register (TCR0)
The timer 0 control register (TCR0) is used to select functions, allow and prohibit
operation, control interrupts, and check interrupt states in timer 0 for the 8-bit mode of
the 8/16-bit capture timer/counter or in the 16-bit mode. Even if only timer 0 is used in
the 8-bit mode, the timer 1 control register (TCR1) must be initialized.
■ Timer 0 Control Register (TCR0)
Figure 8.4-3 Timer 0 Control Register (TCR0)
12 8 t
IN S T
[40.96 µ s ]
16t IN S T [5.12
µ
s ]
0
TC S 02 TC S 01 TC S 00
0 0 0
0 0 1
0 1 0
0 1 1
1 0 0
1 0 1
1 1 0
1 1 1
CINV
0
1
T0IEN
0
1
TFCR0
0
TIF0
0
b it7 b it6 b it5 b it4 b it 3 b it2 b it1 b it0
TIF0 TFCR0 T0IEN CINV TC S 02 TC S 01 TC S 00 T S TR0
R R/W R/W R/W R/W R/W R/W R/W
R/W : Re a d ab le/Writ ab le
R : Re a d only
: Initi a l v a l u e
1
1
T S TR0
Addre ss Initi a l v a l u e
Timer s t a rt b it
The co u nter oper a tion i s s topped.
The co u nter i s cle a red a nd increment s t a rt s .
Clock s o u rce s election b it s (o s cill a tion: 12.5 MHz)
Extern a l clock
Co u nt clock s election b it
The co u nter i s incremented a t the f a lling edge of a s elected
clock s o u rce.
The co u nter i s incremented a t the ri s ing edge of a s elected
clock s o u rce.
Interr u pt re qu e s t en ab le b it
Interr u pt re qu e s t o u tp u t i s prohi b ited.
Interr u pt re qu e s t o u tp u t i s a llowed.
Comp a re m a tch detection fl a g cle a r b it
Not a ffected ( a t re a d, a lw a y s "0")
The comp a re m a tch detection fl a g i s cle a red.
Comp a re m a tch detection fl a g b it
No comp a re m a tch h as occ u rred.
A comp a re m a tch occ u rred.
001B
H
00000000
B
2t
IN S T
[0.64 µ s ]
4t IN S T [1.2 8
µ
s ]
64t
IN S T
[20.4 8 µ s ]
256t
IN S T
[ 8 1.92 µ s ]
512t IN S T [16 3 . 8 4
µ
s ]
t
IN S T
: In s tr u ction cycle (Affected b y the clock mode a nd other s .)
1