看门狗

Pinout: C High-performance 32-bit RISC Architecture C High-density 16-bit Instruction Set C Leader in MIPS/Watt C Little-endian C Embedded ICE (In-circuit Emulation) 8-, 16- and 32-bit Read and Write Support 256K Bytes of On-chip SRAM C 32-bit Data Bus C Single-clock Cycle Access Fully Programmable External Bus Interface C Maximum External Address Space of 64M Bytes C Up to Eight Chip Selects C Software Programmable 8/16-bit External Data Bus Eight-level Priority, Individually Maskable, Vectored Interrupt Controller C Four External Interrupts, including a High-priority, Low-latency Interrupt Request 32 Programmable I/O Lines Three-channel 16-bit Timer/Counter C Three External Clock Inputs C Two Multi-purpose I/O Pins per Channel Two USARTs C Two Dedicated Peripheral Data Controller Channels per USART Programmable Watchdog Timer Advanced Power-saving Features C CPU and Peripheral Can be Deactivated Individually Fully Static Operation: C 0 Hz to 75 MHz Internal Frequency Range at VDDCORE = 1.8V, 85C 2.7V to 3.6V I/O Operating Range 1.65V to 1.95V Core Operating Range -40C to +85C Temperature Range Available in 100-lead TQFP Package

M5L8253P-5引脚说明： C型高性能32位RISC架构C高密度以MIPS /瓦C小端C十六位指令集C领袖嵌入式冰8 - 16 -位和32位的读写支持256K的片上SRAM的 32位数据总线C单时钟周期存取字节完全可编程的外部总线接口C最大的外部地址空间的64M字节多达8个C芯片选择C软件可编程8位外部数据总线8级优先级，独立可屏蔽，向量中断控制器C四外部中断，其中包括一个高优先级，低延迟中断要求32个可编程I / O口线三通道16位定时器/计数器C三个外部时钟输入C两多用途I / O引脚每通道2个通用同步C两专用外设数据控制器通道每个USART可编程看门狗定时器先进的节能特性 CPU和外设可停用独立全静态工作中：C 0 Hz至75 MHz的频率范围内的VDDCORE = 1.8，85℃2.7V到3.6VI / O的操作1.65V到1.95V范围核心工作电压范围在- 40C至+85 C温度范围内使用的100引脚TQFP封装

Old German breed of sturdy black or grayish wire-haired terriers having a blunt muzzle ranging in size from fairly small to very large; used as ratters and guard dogs or police dogs.

古老的德国品种，强健的黑色或灰色硬毛猎犬，口部不尖，体型从很小到非常大；用作捕鼠犬、看门狗或警犬。

Old German br d of sturdy black or grayish wire-haired terriers having a blunt muzzle ranging in size from fairly small to very large; used as ratters and guard dogs or police dogs.

古老的德国品种，强健的黑色或灰色硬毛猎犬，口部不尖，体型从很小到非常大；用作捕鼠犬、看门狗或警犬。

Considering the request at electric-magnetic compatibility, anti-interference ability is well considered, software trap, watchdog are used in software programming.

考虑到刹车控制器在电磁兼容性方面的要求，系统在硬件电路设计上充分考虑抗干扰设计，软件上采用软件陷阱、软件看门狗等措施来提高系统的抗干扰能力。

Meanwhile,the concept of Virtual Watch Dog Timer and the advanced three-step startup are proposed in software.

同时在软件上提出了改进的三段式启动方法和虚拟看门狗的概念。

He is often associated with a sceptre, cornucopia, or Cerburus, the three-headed dog.

他常与节杖，丰饶之角，三个头的地狱看门狗有关。

It was named after the three-headed watchdog in cla ical Greek mythology that guards the gates to Hades.

其命名是根据希腊神话中守卫冥王大门的长有三头的看门狗做的。

It was named after the three-headed watchdog in claical Greek mythology that guards the gates to Hades.

其命名是根据希腊神话中守卫冥王大门的长有三头的看门狗做的。

It was named after the three-headed watchdog inassical Greek mythology that guards the gates to Hades.

其命名是根据希腊神话中守卫冥王大门的长有三头的看门狗做的。

From: AAP By Paul Osborne March 28, 2006 INTERNET service providers could face huge fines if they do not provide spam filtering or impose email sending limits under new rules set down by a communications watchdog.

来自：商会保罗奥斯本三月二十八日2006因特网服务提供商可能面临巨额罚款，如果他们不提供电子邮件发送垃圾邮件过滤或施加限制根据新的规则规定了通信看门狗。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。