MOS 6507 Tech Spec's

[Pete Turnbull]

On Jan 25 2005,  9:11, Eric Smith wrote:

> There are no specific documents on it.  It's in the MCS650x data
sheet.
> It's just a 6502 die in a smaller 28-pin DIP package with not all of
the
> pins bonded out.  Specifically, A12 through A15, RDY, /NMI, SYNC, SO,
> three NC pins, and one Vss pin are not available.
>
> The pinout is:
>
>       /RES    1     28    Ph2 out
>        Vss    2     27    Ph0 in
>     Ph1 out   3     26    R/W
>       /IRQ    4     25    D0
>        Vcc    5     24    D1
>         A0    6     23    D2
>         A1    7     22    D3
>         A2    8     21    D4
>         A3    9     20    D5
>         A4    10    19    D6
>         A5    11    18    D7
>         A6    12    17    A11
>         A7    13    16    A10
>         A8    14    15    A9

That's a 6506 (above).  6507 is:

      /RES    1     28    Ph2 out
       Vss    2     27    Ph0 in
       RDY    3     26    R/W
       Vcc    4     25    D0
        A0    5     24    D1
	A1    6     23    D2
	A2    7     22    D3
	A3    8     21    D4
	A4    9     20    D5
	A5    10    19    D6
	A6    11    18    D7
	A7    12    17    A12
	A8    13    16    A11
	A9    14    15	  A10

Note Vcc is one pin lower (in number).  6507 has one more address line,
no IRQ, and no Phi1, but it does have /RDY.

-- 
Pete						Peter Turnbull
						Network Manager
						University of York