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SDA5250 Datasheet, PDF (100/143 Pages) Siemens Semiconductor Group – TVTEXT 8-Bit Microcontroller
SDA 525x
Internal Bus
1
Write
to
SBUF
DSQ
SBUF
&
CL
Zero Detector
Timer1 Overflow
.. 16
SMOD=1
.. 2
SMOD=0
(PCON.7)
Sample
1-to-0
Transition
Detector
RxD
Start
TX Clock
Shift
Data
TX Control
TI Send
Serial
1
Port
Interrupt
.. 16
RX Clock
RI Load
Start
RX Control
SBUF
1FFH Shift
Bit
Detector
Input Shift Register
(9 Bits)
Shift
Load
SBUF
Read
SBUF
Internal Bus
SBUF
Figure 30
Serial Port Mode 1, Functional Diagram
Semiconductor Group
100
1 TxD
UES04728
1998-04-08