View Full Version : Controlling SN94624 with Arduino Uno and SN74HC595

Capt. 2110
February 10th, 2016, 04:58 PM
I've seen multiple things like this, but it's using the SN76489, which I understand ran a a higher clock rate. How would I make an Arduino-powered SN94629N?
I intended to use this as a test run: http://forum.arduino.cc/index.php?topic=161257.0

February 19th, 2016, 02:12 PM
Hard to tell, a quick search on the web didn't reveal any datasheets for the SN94629N. Do you have links for a datasheet for the chip?

Capt. 2110
February 23rd, 2016, 02:37 PM
Not on hand, no. I think it's probably the same pinout as the SN76489, but I think this one runs at 500 KHz.

March 22nd, 2016, 02:19 PM
The Wikpedia entry for SN76489 (https://en.wikipedia.org/wiki/Texas_Instruments_SN76489) seems to support that the chips are the same, except for a divide by eight on the clock input.
Well, you could wire it like this (http://danceswithferrets.org/geekblog/?p=93) and just change the frequency on the "Clock" signal.