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MSM80C154S/83C154S/85C154HVS
96
XTAL 1 ÷2
S3
DETECTOR
T2
[PORT 1.0]
Q0------Q7
TL2
8 BIT
C
RCAP2L
Q0------Q7
TH2
8 BIT
C
RCAP2H
DETECTOR
T2EX
[PORT 1.1]
TR2
EXEN2
DETECTOR EXF2
TIMER 2 INTERRUPT
*RCLK+TCLK=1
CP/ RL2=×
C/ T2
RCLK
TCLK
÷2
TIMER 1 OVERFLOW
SMOD[PCON bit 7]
÷16
RX CLOCK
[MODE1, 3]
÷16
TX CLOCK
[MODE1, 3]
Figure 4-22 Timer/counter 2 baud rate generator mode circuit