麦肯MDT10P712代理

　　MDT10P712

　　2. FeaturesThe followings are some of the features on thehardware and software :? Fully COMS static design? 8-bit data bus? On chip EPROM size : 1 K words? Internal RAM size : 41 bytes? 36 single word instructions? 14-bit instructions? 2-level stacks? Operating voltage : 2.5 V ~ 5.0 V? Operating frequency : 4 MHz or 8 MHz? The most fast execution time is 500 ns under 8MHz in all single cycle instructions except thebranch instruction? Addressing modes include direct, indirect andrelative addressing modes? Power-on Reset? Sleep Mode for power saving? Oscillator mode:INTRC－Internal 4/8 MHz RC oscillator? Power on start-up time : 20 ms? 8-bit real time clock/counter(RTCC) with 8-bitprogrammable prescaler? On-chip RC oscillator based WatchdogTimer(WDT)? Wake-up from sleep on pin chang应注意，WDT 复位不会将MCLR————————引脚驱动为低电平。若施加在MCLR————————引脚上的电压超出规范值，则在 ESD 事件发生期间可导致MCLR————————复位且器件中流过超过规范值的过电流。因此，建议不要把MCLR————————引脚直接连接到 VDD。建议使用图 3-3 给出的 RC 网络。通过清零配置字寄存器中的MCLR————————位，可使能内部MCLR————————选项。当 MCLRE = 0 时，在内部产生芯片的复位信号。当 MCLRE = 1 时，PA3/MCLR————————引脚变成外部复位输入。在这种模式下，PA3/MCLR————————引脚具有到 VDD的弱上拉功能。