W78IRD2A25DL Datasheet, PDF (37/76 Pages) List of Unclassifed Manufacturers – 8-BIT MICROCONTROLLER

W78IRD2
RCLK+TCLK=0, CP/RL2 =T2CON.0=0, DCEN=1
1/6
osc
1/12
T2 = P1.0
TR2 = T2CON.2
Down Counting Reload Value
0FFh 0FFh
T2M = CKCON.5
1
C/T = T2CON.1
0⁰
1
TL2 TH2
T2EX = P1.1
RCAP2L RCAP2H
Up Counting Reload Value
Figure 9-6 16-Bit Auto-reload Up/Down Counter
T2CON.7
TF2
Timer 2
Interrupt
EXF2
T2CON.6
Baud Rate Generator Mode
Baud-rate generator mode is enabled by setting either the RCLK or TCLK bits in T2CON register. In
baud-rate generator mode, Timer 2 is a 16-bit up-counter that automatically reloads when it overflows,
but this overflow does not set the timer overflow bit TF2. If EXEN2 is set, then a negative transition on
the T2EX pin sets EXF2 bit in T2CON and, if enabled, generates an interrupt request.
osc
T2 = P1.0
TR2 = T2CON.2
T2EX = P1.1
EXEN2 = T2CON.3
RCLK+TCLK=1
C/T = T2CON.1
0
1
TL2 TH2
Timer 2
overflow
RCAP2L RCAP2H
EXF2
T2CON.6
Timer 2
Interrupt
Figure 9-7 Baud Rate Generator Mode
- 37 -
Publication Release Date: October 2, 2006
Revision A7