Accessible pinout for MC68A09E

Part description: 8-Bit Microprocessing unit 1.5MHz, DIP-40

Package description: This package has two parallel rows of pins extending down from opposite edges of the chip.

There should be a semicircular notch that you can feel in the middle of one of the package's shorter bare edges. With the pins facing downward and the chip oriented so notch is on the side of the chip furthest from you, Pin 1 will be in the far left corner of the chip.

Pins are numbered counter-clockwise. Numbers increase from the far left corner to the near left corner. They then continue on the right side, increasing from the near right corner to the far right corner. Thus the highest number pin is to the right of pin 1.

Pin assignments

Left side (numbering starts at far end)

Pin Signals
1VSS
2NMI (active low)
3IRQ (active low)
4FIRQ (active low)
5BS
6BA
7VCC
8A0
9A1
10A2
11A3
12A4
13A5
14A6
15A7
16A8
17A9
18A10
19A11
20A12

Right side (numbering starts at near end)

Pin Signals
21A13
22A14
23A15
24D7
25D6
26D5
27D4
28D3
29D2
30D1
31D0
32R / W (active low)
33BUSY
34E
35Q
36AVMA
37RESET (active low)
38LIC
39TSC
40HALT (active low)

This pinout was automatically generated from the KiCAD symbol library revision 164574.

It is possible that there may be a mistake in the source data leading to wrong information on this page.