首页>
外国专利>
Time interval generator with time counter, register and coincidence detector circuit and method for controlling a circuit output using such a time interval generator
Time interval generator with time counter, register and coincidence detector circuit and method for controlling a circuit output using such a time interval generator
A coincidence signal is output when coincidence of a timer counter with the set value of a comparison register is detected by a coincidence detecting circuit and the coincidence signal is input to the external CPU as an interruption signal to execute a CPU to start an interruption routine. In the interruption routine, a reverse enable flag is set, a flag indicating permission to reverse an output signal when the value of a key counter is larger than the value of a buzzer counter and a reverse enable flag is set, a flag indicating prohibition of reversing the output signal when the value of the key counter is smaller than that of the buzzer counter. IMAGE
展开▼
