W79E532A Datasheet, PDF (54/78 Pages) Winbond – 8-BIT MICROCONTROLLER

W79E532A/W79L532A
Timer 1
Overflow
Timer 2 Overflow
(for Serial Port 0 only)
2
Write to
SBUF
TB8
Internal
Data Bus
SMOD=
(SMOD_1) ⁰
1
TCLK _{0 1}
16
TX START TX SHIFT
TX CLOCK
TI
RCLK
01
16
SERIAL
CONTROLLER ^RI
SAMPLE
1-TO-0
DETECTOR
RX CLOCK
RX
START
LOAD
SBUF
RX SHIFT
STOP
D8
PARIN
START ^SOUT
LOAD
CLOCK
Transmit Shift Register
TXD
Serial Port
Interrupt
Read
SBUF
RXD
BIT
DETECTOR
CLOCK
PAROUT
SBUF
SIN
D8
RB8
Receive Shift Register
Internal
Data
Bus
Table 10. Serial Ports Modes
SM1 SM0 MODE TYPE
0
0
0
Synch.
0
1
1
Asynch.
1
0
2
Asynch.
1
1
3
Asynch.
Figure 23. Serial Port Mode 3
BAUD CLOCK
4 or 12 TCLKS
Timer 1 or 2
32 or 64 TCLKS
Timer 1 or 2
FRAME
SIZE
8 bits
10 bits
11 bits
11 bits
STAR
T BIT
No
1
1
1
STOP
BIT
No
1
1
1
9TH BIT
FUNCTION
None
None
0, 1
0, 1
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