W79E632A Datasheet, PDF (54/79 Pages) Winbond – 8-BIT MICROCONTROLLER

W79E632A/W79L632A
Timer 1
Overflow
Timer 2 Overflow
(for Serial Port 0 only)
Internal
2
Write to
Data Bus
SBUF
SMOD=
(SMOD_1) ⁰
1
TCLK _{0 1}
16
TX START TX SHIFT
TX CLOCK
TI
RCLK
01
16
SAMPLE
1-TO-0
DETECTOR
SERIAL
CONTROLLER ^RI
RX CLOCK
RX
START
LOAD
SBUF
RX SHIFT
Transmit Shift Register
STOP
PARIN
START ^SOUT
LOAD
CLOCK
RXD
BIT
DETECTOR
CLOCK
PAROUT
SBUF
SIN
D8
RB8
Receive Shift Register
TXD
Serial Port
Interrupt
Read
SBUF
Internal
Data
Bus
Figure 21. Serial Port Mode 1
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