Intel MCS 51

8XC51FXHARDWAREDESCRIPTION
(DOWNCOUNTINGRELOADVALUE)
FFH ; FFH
I
TOOOLE
TR2
A,
COUNT
DIRECTION
1 = UP
O = DOWN
(UP COUNnNGRELOADVALUE)
n
T2EX PIN
270653-11
Figure 14. Timer 2Auto Reload Mode (DCEN = 1)
I
Osc
+2
1~1
TL2
: TH2
I
I
● (8-Blt8) ;(8-BNs)
I
1“
TR2
)
A
cm Bit
PI .0
&
(12)
w
I
+2
I
7T=~
T20E (T2uoD.1)
P1.1 I
1 %
Timer2
(125X)
1
1
Interrupt
EXEN2
270653-35
Figure 15.Timer 2 in Clock-Out Mode
5-19