6532
+---------------------+ GND -+ 1 40 +- A6 | | A5 -+ 2 39 +- PHI2 | | A4 -+ 3 38 +- CS1 | | ___ A3 -+ 4 37 +- CS2 | | A2 -+ 5 36 +- RS | | _ A1 -+ 6 35 +- R/W | | ___ A0 -+ 7 34 +- RES | | PA0 -+ 8 33 +- D0 | | PA1 -+ 9 32 +- D1 | | PA2 -+ 10 31 +- D2 | 6532 | PA3 -+ 11 30 +- D3 | | PA4 -+ 12 29 +- D4 | | PA5 -+ 13 28 +- D5 | | PA6 -+ 14 27 +- D6 | | PA7 -+ 15 26 +- D7 | | PB7 -+ 16 25 +- P0 | | PB6 -+ 17 24 +- PB1 | | PB5 -+ 18 23 +- PB2 | | PB4 -+ 19 22 +- PB3 | | +5V -+ 20 21 +- PB4 +---------------------+ PA0..PA7 = Port A, 8 programmable I/O lines PB0..PB7 = Port B, 8 programmable I/O lines D0..D7 = data bus A0..A9 = address bus CLK2 = Clock of the processor, also known as PHI2 RS = Line used to choose between RAM AND I/O R/W = Read/Write line RES = Reset line CS1, CS2 = CS lines
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