Accessible pinout for 82720

Part description: Graphics Display Controller, PDIP-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
12xWCLK
2DBIN (active low)
3HSYNC
4VSYNC
5BLANK
6(ALE)RAS (active low)
7DREQ
8DACK (active low)
9RD (active low)
10WR (active low)
11A0
12DB0
13DB1
14DB2
15DB3
16DB4
17DB5
18DB6
19DB7
20GND

Right side (numbering starts at near end)

Pin Signals
21LPEN
22AD0
23AD1
24AD2
25AD3
26AD4
27AD5
28AD6
29AD7
30AD8
31AD9
32AD10
33AD14
34AD12
35AD13
36AD14
37AD15
38A16
39A17
40VCC

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.