SAK-XC888CLM-8FFA 5V AC Infineon Technologies, SAK-XC888CLM-8FFA 5V AC Datasheet - Page 87

• Manufacturer Part Number: SAK-XC888CLM-8FFA 5V AC
• Description: IC MCU 8BIT FLASH 64-LQFP
• Manufacturer: Infineon Technologies
• Series: XC8xxr

Specifications of SAK-XC888CLM-8FFA 5V AC

• Core Processor: XC800
• Core Size: 8-Bit
• Speed: 103.2MHz
• Connectivity: CAN, LIN, SSI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 48
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Ram Size: 1.75K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 64-LFQFP
• Data Bus Width: 8 bit
• Data Ram Size: 1.75 KB
• Interface Type: UART, SSC
• Maximum Clock Frequency: 24 MHz
• Number Of Programmable I/os: 48
• Number Of Timers: 4
• Operating Supply Voltage: 5 V
• Maximum Operating Temperature: + 125 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 8 Channel
• For Use With: B158-H8743-X-X-7600IN - KIT STARTER XC886/888
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details
• Other names: SP000210982

3.10
The Watchdog Timer (WDT) provides a highly reliable and secure way to detect and
recover from software or hardware failures. The WDT is reset at a regular interval that is
predefined by the user. The CPU must service the WDT within this interval to prevent the
WDT from causing an XC886/888 system reset. Hence, routine service of the WDT
confirms that the system is functioning properly. This ensures that an accidental
malfunction of the XC886/888 will be aborted in a user-specified time period.
In debug mode, the WDT is default suspended and stops counting. Therefore, there is
no need to refresh the WDT during debugging.
Features
•
•
•
•
•
The WDT is a 16-bit timer incremented by a count rate of
timer is realized as two concatenated 8-bit timers. The upper 8 bits of the WDT can be
preset to a user-programmable value via a watchdog service access in order to modify
the watchdog expire time period. The lower 8 bits are reset on each service access.
Figure 28
Figure 28
Data Sheet
ENWDT
ENWDT_P
16-bit Watchdog Timer
Programmable reload value for upper 8 bits of timer
Programmable window boundary
Selectable input frequency of
Time-out detection with NMI generation and reset prewarning activation (after which
a system reset will be performed)
f
PCLK
shows the block diagram of the WDT unit.
Watchdog Timer
Logic
WDT Block Diagram
1:128
1:2
f
PCLK
WDTIN
/2 or
MUX
80
f
PCLK
/128
WDT Low Byte
Control
WDT
Overflow/Time-out Control &
Window-boundary control
Clear
f
PCLK
/2 or
Functional Description
WDT High Byte
WDTWINB
WDTREL
f
PCLK
XC886/888CLM
/128. This 16-bit
V1.2, 2009-07
FNMIWDT
WDTRST
.