C509-L_97 Datasheet, PDF (173/290 Pages) Siemens Semiconductor Group – 8-Bit CMOS Microcontroller

On-Chip Peripheral Components
C509-L
Internal Bus
1
Write
to
S0BUF
S
D
CLK
S6
REN0
&
RI0
Q
S0BUF
Q
Zero Detector
RXD0
&
P3.0 Alt.
Output
Function
Start
Shift
Shift
TX Control
TX Clock
Tl0
Send
Serial
1
Port
Interrupt
Start
RX Clock
Rl0 _Receive
RX Control
1 1 1 1 1 1 1 0 ^Shift
Input Shift Register
Shift
Load
S0BUF
1
Shift
Clock
TXD0
&
P3.1 Alt.
Output
Function
RXD0
P3.0 Alt.
Input
Function
Read
S0BUF
S0BUF
Internal Bus
MCS01831
Figure 6-41
Functional Diagram - Serial Interface 0, Mode 0
Semiconductor Group
6-95
1997-10-01