SAK-C505CA-4RM CA Infineon Technologies, SAK-C505CA-4RM CA Datasheet - Page 41

• Manufacturer Part Number: SAK-C505CA-4RM CA
• Description: Microcontrollers (MCU) 8-Bit Single Chip Microcontroller
• Manufacturer: Infineon Technologies

Specifications of SAK-C505CA-4RM CA

• Data Bus Width: 8 bit
• Program Memory Type: ROM
• Program Memory Size: 32 KB
• Data Ram Size: 1.25 KB
• Interface Type: USART
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 34
• Number Of Timers: 3
• Operating Supply Voltage: 5 V
• Maximum Operating Temperature: + 125 C
• Mounting Style: SMD/SMT
• Package / Case: PG-MQFP-44
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 8 Channel
• Packages: PG-MQFP-44
• Max Clock Frequency: 20.0 MHz
• Sram (incl. Cache): 1.25 KByte
• Can Nodes: 1
• A / D Input Lines (incl. Fadc): 8
• Program Memory: 32.0 KByte
• Lead Free Status / Rohs Status: No
• Other names: K505CA4RMCANT

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