W78E516DDG Datasheet, PDF (56/90 Pages) Nuvotem Talema – 8-BIT MICROCONTROLLER

W78E516D/W78E058D Data Sheet
14.3.3 Baud Rate Generator Mode
The baud rate generator mode is enabled by setting either the RCLK or TCLK bits in T2CON register.
While in the baud rate generator mode, Timer/Counter 2 is a 16 bit counter with auto reload when the
count rolls over from 0FFFFh. However, rolling over does not set the TF2 bit. If EXEN2 bit is set, then
a negative transition of the T2EX pin will set EXF2 bit in the T2CON register and cause an interrupt
request.
RCLK+TCLK=1, CP /RL2 =0
T im er1
O verflow
Fosc
1 /2
T 2 = P 1 .0
T R 2=T 2C O N .2
T2EX =P1.1
EX EN 2=T2C O N .3
1 /2
C /T 2=T 2C O N .1
0
1
TL2
RCAP2L
0
TH2
Tim er2
O verflow
RCLK=
T2C O N .5
1
0
TCLK=
T2C O N .4
1
0
RCAP2H
1
SM OD=
PC O N .7
1/16
1/16
Rx Clock
T x C lock
EXF2
T2C O N .6
Figure 14- 6 Baud Rate Generator Mode
Tim er2
Interrupt
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