SAK-XC888CLM-8FFA 5V AC Infineon Technologies, SAK-XC888CLM-8FFA 5V AC Datasheet - Page 88

• 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

If the WDT is not serviced before the timer overflow, a system malfunction is assumed.
As a result, the WDT NMI is triggered (assert FNMIWDT) and the reset prewarning is
entered. The prewarning period lasts for 30
(assert WDTRST).
The WDT has a “programmable window boundary” which disallows any refresh during
the WDT’s count-up. A refresh during this window boundary constitutes an invalid
access to the WDT, causing the reset prewarning to be entered but without triggering the
WDT NMI. The system will still be reset after the prewarning period is over. The window
boundary is from 0000
00
After being serviced, the WDT continues counting up from the value (<WDTREL> * 2
The time period for an overflow of the WDT is programmable in two ways:
•
•
The period,
by the following formula:
If the Window-Boundary Refresh feature of the WDT is enabled, the period
between servicing the WDT and the next overflow is shortened if WDTWINB is greater
than WDTREL, see
replacing WDTREL with WDTWINB. For this feature to be useful, WDTWINB cannot be
smaller than WDTREL.
Data Sheet
H
The input frequency to the WDT can be selected to be either
The reload value WDTREL for the high byte of WDT can be programmed in register
WDTREL
.
P
WDT
, between servicing the WDT and the next overflow can be determined
Figure
H
to the value obtained from the concatenation of WDTWINB and
P
29. This period can be calculated using the same formula by
WDT
=
2
---------------------------------------------------------------------------------------------------------
(
1
+
WDTIN
×
81
6
)
×
f
H
(
PCLK
2
16
count, after which the system is reset
–
WDTREL
×
2
8
)
Functional Description
f
PCLK
XC886/888CLM
/2 or
f
V1.2, 2009-07
PCLK
/128
P
(3.4)
WDT
8
).