SAK-C505L Infineon Technologies AG, SAK-C505L Datasheet - Page 37

• Manufacturer Part Number: SAK-C505L
• Description: 8-bit CMOS Microcontroller
• Manufacturer: Infineon Technologies AG

Figure 15
Block Diagram of Baud Rate Generation for the Serial Interface
Table 8 below lists the values/formulas for the baud rate calculation of the serial interface with its
dependencies of the control bits BD and SMOD.
Table 8
Serial Interface - Baud Rate Dependencies
Serial Interface
Operating Modes
Mode 0 (Shift Register)
Mode 1 (8-bit UART)
Mode 3 (9-bit UART)
Mode 2 (9-bit UART)
Data Sheet
f
Timer 1
Overflow
Note: The switch configuration shows the reset state.
OSC
Generator
(SRELH
SRELL)
Baud
Rate
÷
6
BD
–
0
1
–
Active Control Bits Baud Rate Calculation
ADCON0.7
0
1
Mode 2
Mode 0
(BD)
SMOD
–
X
X
0
1
Mode 1
Mode 3
can be selected
Only one mode
35
Controlled by timer 1 overflow:
(2
Controlled by baud rate generator
(2
(32
f
f
f
SCON.7
SCON.6
OSC
OSC
OSC
SMOD
SMOD
(SM0/
SM1)
/ 6
/ 32
/ 16
baud rate generator overflow rate)
timer 1 overflow rate) / 32
f
OSC
) /
÷
2
0
1
PCON.7
(SMOD)
MCS02733
C505L
Baud
Rate
Clock
06.99