Interactive chip reference

6502 DIP-40 pinout

6502 40-pin DIP-40 pinout. MOS Technology NMOS 8-bit microprocessor, 40-pin DIP

Package
DIP-40
Pin count
40
Category
CPU

Pin reference

Pin Name Function Group
1 VSS Ground reference ground
2 RDY Ready / DMA halt control control
3 PHI1O Phase 1 clock output clock
4 /IRQ Maskable interrupt request control
5 NC No connection nc
6 /NMI Non-maskable interrupt request control
7 SYNC Instruction opcode fetch indicator control
8 VCC Positive supply input power
9 A0 Address bus bit 0 output
10 A1 Address bus bit 1 output
11 A2 Address bus bit 2 output
12 A3 Address bus bit 3 output
13 A4 Address bus bit 4 output
14 A5 Address bus bit 5 output
15 A6 Address bus bit 6 output
16 A7 Address bus bit 7 output
17 A8 Address bus bit 8 output
18 A9 Address bus bit 9 output
19 A10 Address bus bit 10 output
20 A11 Address bus bit 11 output
21 VSS Ground reference ground
22 A12 Address bus bit 12 output
23 A13 Address bus bit 13 output
24 A14 Address bus bit 14 output
25 A15 Address bus bit 15 output
26 D7 Data bus bit 7 bidir
27 D6 Data bus bit 6 bidir
28 D5 Data bus bit 5 bidir
29 D4 Data bus bit 4 bidir
30 D3 Data bus bit 3 bidir
31 D2 Data bus bit 2 bidir
32 D1 Data bus bit 1 bidir
33 D0 Data bus bit 0 bidir
34 R/W Read / write bus direction control
35 NC No connection nc
36 NC No connection nc
37 PHI0 Phase 0 clock input clock
38 SO Set overflow on a falling edge control
39 PHI2O Phase 2 clock output clock
40 /RES Reset input control

View the interactive 6502 package diagram and labeled pin details on WhichPin.