UPD4701A Description
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 putation is performed, and count data is output in 8-bit parallel form. In addition, a 3-contact-point input buffer is incorporated, which is useful for applications which use a pointing device such as a mouse or track-ball.
UPD4701A Key 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,
- Counters: 12-bit binary up/down counters (2 sets, X & Y) Reset value: 000H
- Count data output: 8-bit parallel latch output × 2 (including key input flag)
- On-chip 3-contact-point key input buffer circuit
- Single +5 V power supply