ERROR DATA WRITING PREVENTING APPARATUS AND METHOD

摘要

The apparatus and method is for protecting abnormal writing data on peripheral equipments and RAM caused by abnormal condition of a CPU. The apparatus comprises a first logic signal generator(11) for generating a logic signal according to input data, a first latch(12) for latching the logic signals output from the first logic signal generator sequentially during one period of writing enable signal, a second logic signal generator(13) for outputting the last signal of the signals latched by the first latch(12), and an adder(14) for adding output signal of the second logic signal generator(13) and a writing enable signal.