6844: Difference between revisions

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[http://www.citylan.it/immagini/pdf/mc6844.pdf MC6844.pdf]
'''Direct Memory Access Controller (DMAC)'''


=Pinout=
<pre>
DIP40
          +---\/---+
      Vss | 1    40| E
*CS/Tx AKB | 2    39| *RESET
      R/*W | 3    38| DGRNT
        A0 | 4    37| *DRQ1
        A1 | 5    36| *DRQ2
        A2 | 6    35| Tx AKA
        A3 | 7    34| *Tx STB
        A4 | 8    33| *IRQ/*DEND
        A5 | 9    32| Tx RQ0
        A6 |10    31| Tx RQ1
        A7 |11    30| Tx RQ2
        A8 |12    29| Tx RQ3
        A9 |13    28| D0
      A10 |14    27| D1
      A11 |15    26| D2
      A12 |16    25| D3
      A13 |17    24| D4
      A14 |18    23| D5
      A15 |19    22| D6
      Vcc |20    21| D7
          +--------+
</pre>


[[http://www.cpu-world.com/Support/6809.html "6809 support chips" page on CPU-World]]
=Frequency=
[[Category:CPU]]
No frequency to check
 
=External links=
[http://www.cpu-world.com/Support/6809.html "6809 support chips" page on CPU-World]
 
=Files=
<gallery widths="150px">
File:mc6844.pdf|MC6844 Datasheet
</gallery>
 
[[Category:Other Chips]]
[[Category:DIP40-600mil]]

Latest revision as of 15:30, 9 November 2017

Direct Memory Access Controller (DMAC)

Pinout

DIP40
           +---\/---+
       Vss | 1    40| E
*CS/Tx AKB | 2    39| *RESET
      R/*W | 3    38| DGRNT
        A0 | 4    37| *DRQ1
        A1 | 5    36| *DRQ2
        A2 | 6    35| Tx AKA
        A3 | 7    34| *Tx STB
        A4 | 8    33| *IRQ/*DEND
        A5 | 9    32| Tx RQ0
        A6 |10    31| Tx RQ1
        A7 |11    30| Tx RQ2
        A8 |12    29| Tx RQ3
        A9 |13    28| D0
       A10 |14    27| D1
       A11 |15    26| D2
       A12 |16    25| D3
       A13 |17    24| D4
       A14 |18    23| D5
       A15 |19    22| D6
       Vcc |20    21| D7
           +--------+

Frequency

No frequency to check

External links

"6809 support chips" page on CPU-World

Files