SAF-C505CA-LM Infineon Technologies, SAF-C505CA-LM Datasheet - Page 41

• Manufacturer Part Number: SAF-C505CA-LM
• Description: IC, 8BIT MCU ROM/ROMLESS, SMD
• Manufacturer: Infineon Technologies

Specifications of SAF-C505CA-LM

• No. Of I/o's: 34
• Ram Memory Size: 256Byte
• Cpu Speed: 20MHz
• No. Of Timers: 3
• No. Of Pwm Channels: 4
• Digital Ic Case Style: MQFP
• Supply Voltage: RoHS Compliant
• Core Size: 8bit
• Oscillator Type: External, Internal
• Controller Family/series: C500
• Peripherals: ADC
• Rohs Compliant: Yes

CAN Controller Software Initialization
The very first step of the initialization is the CAN controller input clock selection. A divide-by-2
prescaler is enabled by default after reset
prescaler. The purpose of the prescaler selection is:
Figure 16
CAN controller Input Clock Selection
Data Sheet
– to ensure that the CAN controller is operable when f osc is over 10 MHz (bit CMOD =0)
– to achieve the maximum CAN baudrate of 1 Mbaud when f osc is 8 MHz (bit CMOD=1)
f
Condition: CMOD = 0, when
OSC
Frequency (MHz)
f
OSC
Note : The switch configuration shows the reset state of bit CMOD.
16
8
8
2
f
CAN
8
4
8
f
OSC
0
1
SYSCON.3
(SYSCON.3)
> 10 MHz
(CMOD)
CMOD
(Figure
1
0
37
16). Setting bit CMOD (SYSCON.3) disables the
(BTR0.0-5)
f
CAN
000000 B
000000 B
000000 B
BRP
C505/C505C/C505A/C505CA
(Mbaud/sec)
Full-CAN
baudrate
Module
CAN
0.5
1
1
MCS03296
12.00