SAF-XC164LM-4F40F AA Infineon Technologies, SAF-XC164LM-4F40F AA Datasheet - Page 37
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SAF-XC164LM-4F40F AA
Manufacturer Part Number
SAF-XC164LM-4F40F AA
Description
IC MCU 16BIT 32KB FLASH TQFP64-8
Manufacturer
Infineon Technologies
Series
XC16xr
Datasheet
1.SAF-XC164LM-16F40F_BA.pdf
(61 pages)
Specifications of SAF-XC164LM-4F40F AA
Core Processor
C166SV2
Core Size
16-Bit
Speed
40MHz
Connectivity
SPI, UART/USART
Peripherals
PWM, WDT
Number Of I /o
47
Program Memory Size
32KB (32K x 8)
Program Memory Type
FLASH
Ram Size
4K x 8
Voltage - Supply (vcc/vdd)
2.35 V ~ 2.7 V
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
64-LFQFP
Packages
PG-LQFP-64
Max Clock Frequency
40.0 MHz
Sram (incl. Cache)
4.0 KByte
Program Memory
32.0 KByte
For Use With
MCBX167-NET - BOARD EVAL INFINEON CAN/ETHRNTMCBXC167-BASIC - BOARD EVAL BASIC INFINEON XC16X
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Data Converters
-
Other names
SAF-XC164LM-4F40FAACT
SAF-XC164LM-4F40FAACT
SAF-XC164LM-4F40FAAINCT
SAF-XC164LM-4F40FAACT
SAF-XC164LM-4F40FAAINCT
XC164LM
Derivatives
Functional Description
3.10
Watchdog Timer
The Watchdog Timer represents one of the fail-safe mechanisms which have been
implemented to prevent the controller from malfunctioning for longer periods of time.
The Watchdog Timer is always enabled after a reset of the chip, and can be disabled
until the EINIT instruction has been executed (compatible mode), or it can be disabled
and enabled at any time by executing instructions DISWDT and ENWDT (enhanced
mode). Thus, the chip’s start-up procedure is always monitored. The software has to be
designed to restart the Watchdog Timer before it overflows. If, due to hardware or
software related failures, the software fails to do so, the Watchdog Timer overflows and
generates an internal hardware reset.
The Watchdog Timer is a 16-bit timer, clocked with the system clock divided by
2/4/128/256. The high byte of the Watchdog Timer register can be set to a prespecified
reload value (stored in WDTREL) in order to allow further variation of the monitored time
interval. Each time it is serviced by the application software, the high byte of the
Watchdog Timer is reloaded and the low byte is cleared. Thus, time intervals between
13 μs and 419 ms can be monitored (@ 40 MHz).
The default Watchdog Timer interval after reset is 3.28 ms (@ 40 MHz).
Data Sheet
35
V1.2, 2007-03