6821: Difference between revisions
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Revision as of 11:49, 23 October 2009
Peripheral Interface Adapter PIA
Pinout
DIP40
+---\/---+
Vss | 1 40| CA1
PA0 | 2 39| CA2
PA1 | 3 38| *IRQA
PA2 | 4 37| *IRQB
PA3 | 5 36| RS0
PA4 | 6 35| RS1
PA5 | 7 34| *RESET
PA6 | 8 33| D0
PA7 | 9 32| D1
PB0 |10 31| D2
PB1 |11 30| D3
PB2 |12 29| D4
PB3 |13 28| D5
PB4 |14 27| D6
PB5 |15 26| D7
PB6 |16 25| E
PB7 |17 24| CS1
CB1 |18 23| *CS2
CB2 |19 22| CS0
Vcc |20 21| R/*W
+--------+
Frequency
No frequency to check
External links
"6809 support chips" page on CPU-World
Files
-
MC6821 Datasheet
-
EF6821 Datasheet
