SAF-C505C-2RM View Datasheet(PDF) - Infineon Technologies

Part Name

Description

Manufacturer

SAF-C505C-2RM

8-bit Single-Chip Microcontroller

Infineon Technologies 

C505 / C505C

C505A / C505CA

Timer 1

Overflow

Baud

Rate

f OSC

Generator

(SRELH

SRELL)

÷6

ADCON0.7

SCON.7

(BD)

SCON.6

(SM0/

0

Mode 1

SM1)

Mode 3

÷2

1

Mode 2

Mode 0

Only one mode

can be selected

Note: The switch configuration shows the reset state.

PCON.7

(SMOD)

0

Baud

1

Rate

Clock

MCS02733

Figure 14

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)

Active Control Bits Baud Rate Calculation

BD

SMOD

–

–

fOSC / 6

0

X

Controlled by timer 1 overflow :

(2SMOD × timer 1 overflow rate) / 32

1

X

Controlled by baud rate generator

(2SMOD × fOSC) /

(32 × baud rate generator overflow rate)

–

0

1

fOSC / 32

fOSC / 16

Data Sheet

34

08.00

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