SAA-XC886CLM-8FFA AC Infineon Technologies, SAA-XC886CLM-8FFA AC Datasheet - Page 85
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SAA-XC886CLM-8FFA AC
Manufacturer Part Number
SAA-XC886CLM-8FFA AC
Description
IC MCU 8BIT 32KB FLASH 48TQFP
Manufacturer
Infineon Technologies
Series
XC8xxr
Datasheet
1.SAA-XC886CLM-6FFA_AC.pdf
(134 pages)
Specifications of SAA-XC886CLM-8FFA 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
34
Program Memory Size
32KB (32K x 8)
Program Memory Type
FLASH
Ram Size
1.75K x 8
Voltage - Supply (vcc/vdd)
2.3 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 140°C
Package / Case
48-TFQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
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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
28. This period can be calculated using the same formula by
WDT
=
2
---------------------------------------------------------------------------------------------------------
(
1
+
WDTIN
×
78
6
)
×
f
H
(
PCLK
2
16
count, after which the system is reset
–
WDTREL
×
2
8
)
Functional Description
f
PCLK
SAA-XC886CLM
/2 or
f
V1.1, 2010-08
PCLK
/128
P
(3.4)
WDT
8
).
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