76489

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Texas Instruments SN76489 Product Family Summary
Chip Variant Freq (max) Audio In Invert Waveform
TMS9919 / SN94624 500 kHz No No
SN76489 4 MHz No Yes
SN76489A 4 MHz No No
SN76494 500 kHz Yes Yes
SN76494A 500 kHz Yes No
SN76496 / NCR 8496 4 MHz Yes Yes
SN76496A 4 MHz Yes No

Digital Complex Sound Generator

Contents

Pinout

DIP16
         +---\/---+
      D2 | 1    16| Vcc
      D1 | 2    15| D3
      D0 | 3    14| CLOCK
   READY | 4    13| D4
     *WE | 5    12| D5
     *OE | 6    11| D6
AUD. OUT | 7    10| D7
     GND | 8     9| N.C.
         +--------+

Frequency

DIP16
Set reader to FREQ, put black probe to GND, red probe to 14 to measure CPU clock

External links

SN76489 page on Wikipedia

Files

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