“C-180”二-十进制同步加法计数器及其应用(下)

• 作 者: 冯初光
• 出 处: 电气时代
• 发表日期: 1985年11期
• 关键词: 时钟脉冲 C-180 十进制数 下降沿 与非门 反相器 输入信号 端接 上升沿 或非门

三、“C180”的应用:主要用于单片“C180”电路或多片“C180”电路级联,作同步计数、非同步计数及分频用。1.“C180”计数器单片使用时:1)计数:若要求使用时钟脉冲上升沿计数,连线见图6,其中G_T端接“1”电平(即V_(DD)),CP端接时钟输入信号。若要求时钟脉冲下降沿计数,见连线图7,其中CP端

Third, “C180 ” Application: Mainly used for single “C180” circuit or multiple “C180” circuit cascade, for synchronous counting, asynchronous counting and frequency division. 1. When the “C180” counter is used as a single chip: 1) Counting: If it is required to count the rising edge of the clock pulse, the connection is shown in Figure 6, where the G_T pin is connected to the “1” , CP termination clock input signal. If it is required to count the falling edge of the clock pulse, see the connection diagram in Figure 7, where CP is the end