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參數(shù)資料
| 型號： | SAF-XE167F-96F66L |
| 廠商： | INFINEON TECHNOLOGIES AG |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 16-BIT, FLASH, 66 MHz, RISC MICROCONTROLLER, PQFP144 |
| 封裝： | 0.50 MM PITCH, GREEN, PLASTIC, LQFP-144 |
| 文件頁數(shù)： | 88/122頁 |
| 文件大?。?/td> | 1453K |
| 代理商： | SAF-XE167F-96F66L |
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XE167x
XE166 Family Derivatives
Functional Description
Data Sheet
66
V2.1, 2008-08
3.13
Watchdog Timer
The Watchdog Timer is 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 an application reset of the chip. It can be
disabled and enabled at any time by executing the instructions DISWDT and ENWDT
respectively. The software has to service the Watchdog Timer before it overflows. If this
is not the case because of a hardware or software failure, the Watchdog Timer
overflows, generating a prewarning interrupt and then a reset request.
The Watchdog Timer is a 16-bit timer clocked with the system clock divided by 16,384
or 256. The Watchdog Timer register is 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 Watchdog Timer is reloaded and the
prescaler is cleared.
Time intervals between 3.2
s and 13.4 s can be monitored (@ 80 MHz).
The default Watchdog Timer interval after power-up is 6.5 ms (@ 10 MHz).
3.14
Clock Generation
The Clock Generation Unit can generate the system clock signal
f
SYS for the XE167 from
a number of external or internal clock sources:
External clock signals with pad or core voltage levels
External crystal using the on-chip oscillator
On-chip clock source for operation without crystal
Wake-up clock (ultra-low-power) to further reduce power consumption
The programmable on-chip PLL with multiple prescalers generates a clock signal for
maximum system performance from standard crystals or from the on-chip clock source.
See also Section 4.6.2.
The Oscillator Watchdog (OWD) generates an interrupt if the crystal oscillator frequency
falls below a certain limit or stops completely. In this case, the system can be supplied
with an emergency clock to enable operation even after an external clock failure.
All available clock signals can be output on one of two selectable pins.
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| SAF-XE167F-96F66L AB | 制造商:Infineon Technologies AG 功能描述: |
| SAF-XE167F-96F66L AC | 功能描述:16位微控制器 - MCU 16BIT SNGL CHIP REAL 3V 66MHz Flash RoHS:否 制造商:Texas Instruments 核心:RISC 處理器系列:MSP430FR572x 數(shù)據(jù)總線寬度:16 bit 最大時鐘頻率:24 MHz 程序存儲器大小:8 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:2 V to 3.6 V 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:VQFN-40 安裝風格:SMD/SMT |
| SAF-XE167F-96F66L AC/TR | 制造商:Infineon Technologies AG 功能描述: |
| SAF-XE167F-96F66LAC | 制造商:Infineon Technologies AG 功能描述:Real Time Signal Controller 768K LQFP144 |
| SAF-XE167F-96F80L AC | 功能描述:16位微控制器 - MCU 16 BIT FLASH C11 IMM RoHS:否 制造商:Texas Instruments 核心:RISC 處理器系列:MSP430FR572x 數(shù)據(jù)總線寬度:16 bit 最大時鐘頻率:24 MHz 程序存儲器大小:8 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:2 V to 3.6 V 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:VQFN-40 安裝風格:SMD/SMT |
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