C509-L_97 Datasheet, PDF (181/290 Pages) Siemens Semiconductor Group – 8-Bit CMOS Microcontroller

TX Clock
Write
to SxBUF
Send
Data
Shift
TXD
Mode 2: S6P1
Mode 3: S1P1
S1P1
Start Bit D0
D1
D2
D3
D4
D5
D6
D7
TB8 Stop Bit
TI
Stop Bit Gen.
RX Clock
-
-: 1-6 RESET
RXDx
Bit Detector
Sample Times
Start Bit D0
D1
D2
D3
D4
D5
D6
D7
RB8 Stop Bit
Shift
RIx
MCT01836
Note : x=0 for serial interface 0 and x=1 for serial interface 1.