UPD4701A Datasheet - NEC

UPD4701A MOS INTEGRATED CIRCUIT

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-contact-point input buffer is incorporated, which .

UPD4701A Features

* 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: YA, YB 2-phase signal 

* Counters: 12-bit binary up/down counters (2 sets, X & Y) Reset value: 000H

* Coun

UPD4701A_NEC.pdf