SAB-C505CA-4EM CA Infineon Technologies, SAB-C505CA-4EM CA Datasheet - Page 41

• Manufacturer Part Number: SAB-C505CA-4EM CA
• Description: IC MCU 8BIT OTP MQFP-44-2
• Manufacturer: Infineon Technologies
• Series: C5xx/C8xxr

Specifications of SAB-C505CA-4EM CA

• Core Processor: C500
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: CAN, EBI/EMI, UART/USART
• Peripherals: POR, PWM, WDT
• Number Of I /o: 34
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: OTP
• Ram Size: 1.25K x 8
• Voltage - Supply (vcc/vdd): 4.25 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: External
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 44-BQFP
• Data Bus Width: 8 bit
• Data Ram Size: 1.25 KB
• Interface Type: CAN, USART
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 34
• Number Of Timers: 3
• Maximum Operating Temperature: + 70 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: 0 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: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details
• Other names: B505CA4EMCANP; B505CA4EMCAXP; SAB-C505CA-4EMCA; SAB-C505CA-4EMCA; SAB-C505CA-4EMCAIN; SABC505CA4EMCAX; SP000106391

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