UPD4701A circuit equivalent, mos integrated circuit.
* X, Y 2-axis incremental encoder counter
* Counter input (Schmitt-triggered input) X axis: XA, XB 2-phase signal 4-multiplication count method used Y axis: Y.
which use a pointing device such as a mouse or track-ball. The CPU checks the switch input flag or count flag and reads .
The µPD4701A is a counter for an X, Y 2-axis incremental encoder. When a two-phase encoder signal is input for the X and Y axes, direction discrimination and computation is performed, and count data is output in 8-bit parallel form. In addition, a 3-.
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