參數(shù)資料
型號： SAF-XC886C-6FFA
廠商： INFINEON TECHNOLOGIES AG
元件分類： 8位微控制器
英文描述： 8-bit Microcontroller with 2/4/8K Bytes In-System Programmable Flash
中文描述： 8位微控制器與2/4/8K字節(jié)在系統(tǒng)可編程閃存
文件頁數(shù)： 75/119頁
文件大?。?/td> 895K
代理商： SAF-XC886C-6FFA
XC886/888CLM
Functional Description
Data Sheet
Prelimary
71
V0.1, 2006-02
3.10
Watchdog Timer
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 suspended and stops counting. Therefore, there is no need to refresh
the WDT during debugging.
Features:
16-bit Watchdog Timer
Programmable reload value for upper 8 bits of timer
Programmable window boundary
Selectable input frequency of f
PCLK
/2 or f
PCLK
/128
Time-out detection with NMI generation and reset prewarning activation (after which
a system reset will be performed)
The WDT is a 16-bit timer incremented by a count rate of f
PCLK
/2 or f
PCLK
/128. This
16-bit 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 29
shows the block diagram of the WDT unit.
Figure 29
WDT Block Diagram
WDTREL
MUX
WDT Low Byte
1:2
Clear
WDT
Control
1:128
WDT High Byte
WDTTO
WDTIN
f
PCLK
Logic
ENWDT
ENWDT_P
WDTRST
Overflow/Time-out Control &
Window-boundary control
WDTWINB
相關(guān)PDF資料
PDF描述
SAF-XC886C-6FFI 8-bit Microcontroller with 2/4/8K Bytes In-System Programmable Flash
SAF-XC886C-8FFA 8-bit Microcontroller with 2/4/8K Bytes In-System Programmable Flash
SAF-XC886C-8FFI 8-bit Microcontroller with 2/4/8K Bytes In-System Programmable Flash
SAF-XC886CLM-6FFA 8-bit Microcontroller with 2/4/8K Bytes In-System Programmable Flash
SAF-XC886CLM-6FFI 8-bit Microcontroller with 2/4/8K Bytes In-System Programmable Flash
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
SAF-XC886C-6FFA 5V AC 功能描述:8位微控制器 -MCU MICROCONTROLLER 8-BIT RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
SAF-XC886C-6FFA5VAC 功能描述:8位微控制器 -MCU RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
SAF-XC886C-6FFI 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:8-Bit Single-Chip Microcontroller
SAF-XC886C-6FFI 3V3 制造商:Infineon Technologies AG 功能描述:
SAF-XC886C-6FFI 3V3 AC 功能描述:8位微控制器 -MCU MICROCONTROLLER 8-BIT RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
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