Intel MCS 51 User Manual

in~.
M~Q.51 PROGRAMMERS GUIDE AND INSTRUCTION SET
TIMER/COUNTER 2 SET-UP
Ex~t for the baud rate mnerstor mode.the valuesaivenfor T2CONdo not include the settine of the TR2 bit.
ller~fore, bit TR2 must ~ set, separately,to turn th~Timer on.
As
a Timer:
Table 7
MODE
T2CON
INTERNAL EXTERNAL
CONTROL CONTROL
(NOTE 1) (NOTE 2)
16-bitAuto-Reload
16-bitCapture
BAUDrate generatorreceive&
transmitsame baudrate
receiveonly
transmitonlv
OOH
OIH
34H
24H
14H
08H
09H
36H
26H
16H
4sa Counter:
Table 8
I
TMOD
I
MODE
INTERNAL
EXTERNAL
CONTROL CONTROL
(NOTE 1) (NOTE 2)
16-bitAuto-Reload
02H OAH
16-bitCapture
03H
OBH
NOTES
1.Capture/ReloadoccursonlyonTimer/Counteroverflow.
2. Capture/Reloadoccurson Timer/Counteroverflowand a 1 to Otransitionon T2EX
(P1.1)pinexceptwhenTimer2 isusedinthebaudrategeneratingmode.
2-18

Intel MCS 51 Specifications

General

Brand	Intel
Model	MCS 51
Category	Microcontrollers
Language	English