SAK-C505CA-4EM CA Infineon Technologies, SAK-C505CA-4EM CA Datasheet - Page 50
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SAK-C505CA-4EM CA
Manufacturer Part Number
SAK-C505CA-4EM CA
Description
IC MCU 8BIT 32KB OTP MQFP-44-2
Manufacturer
Infineon Technologies
Series
C5xx/C8xxr
Datasheet
1.SAK-C505CA-4EM_CA.pdf
(88 pages)
Specifications of SAK-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
-40°C ~ 125°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
+ 125 C
Mounting Style
SMD/SMT
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
Lead free / RoHS Compliant
Eeprom Size
-
Lead Free Status / Rohs Status
Details
Other names
K505CA4EMCANP
K505CA4EMCAXT
SAK-C505CA-4EMCA
SAK-C505CA-4EMCAINTR
SAK-C505CA-4EMCATR
SAK-C505CA-4EMCATR
SAKC505CA4EMCAXT
SP000106397
K505CA4EMCAXT
SAK-C505CA-4EMCA
SAK-C505CA-4EMCAINTR
SAK-C505CA-4EMCATR
SAK-C505CA-4EMCATR
SAKC505CA4EMCAXT
SP000106397
Fail Save Mechanisms
The C505 offers enhanced fail safe mechanisms, which allow an automatic recovery from software
upset or hardware failure :
The watchdog timer in the C505 is a 15-bit timer, which is incremented by a count rate of
upto
divide-by-16 prescaler. For programming of the watchdog timer overflow rate, the upper 7 bits of the
watchdog timer can be written.
Figure 24
Block Diagram of the Programmable Watchdog Timer
The watchdog timer can be started by software (bit SWDT in SFR IEN1) but it cannot be stopped
during active mode of the device. If the software fails to refresh the running watchdog timer an
internal reset will be initiated on watchdog timer overflow. For refreshing of the watchdog timer the
content of the SFR WDTREL is transfered to the upper 7-bit of the watchdog timer. The refresh
sequence consists of two consequtive instructions which set the bits WDT and SWDT each. The
reset cause (external reset or reset caused by the watchdog) can be examined by software (flag
WDTS). It must be noted, however, that the watchdog timer is halted during the idle mode and
power down mode of the processor.
Data Sheet
– a programmable watchdog timer (WDT), with variable time-out period from 192 s up to
– an oscillator watchdog (OWD) which monitors the on-chip oscillator and forces the
f
approx. 393.2 ms at 16 MHz (314.5 ms at 20 MHz).
microcontroller into reset state in case the on-chip oscillator fails; it also provides the clock for
a fast internal reset after power-on.
OSC
f
OWDS
OSC
External HW Reset
/192. The system clock of the C505 is divided by two prescalers, a divide-by-two and a
/ 6
SWDT
WDTS
WDT
2
Control Logic
WDT Reset - Request
Figure 24
16
shows the block diagram of the watchdog timer unit.
IP0 (A9 )
46
H
IEN0 (A8 )
IEN1 (B8 )
WDTPSEL
C505/C505C/C505A/C505CA
H
H
7
0
6
14
WDTREL (86 )
WDTL
WDTH
H
MCB03306
7
8
0
f
OSC
12.00
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