This is revision A of the EMDP1 GAL24 plug and it is currently a work in progress.

EMDP1 GAL24 Plug (Rev. A)

Table of Contents

• Table of Contents
• Introduction
• Schematic
• Printed Circuit Board
• Tables
• Issues

Introduction

The EMDP1 GAL24 plug is used to program the 16V8 and 18V10 20-pin GAL's.

Schematic

The schematic for this revision is shown below:

Printed Circuit Board

The following printed circuit board files exist:

gal24_artwork.png

The artwork layer picture (PNG).

gal24_back.png

The back layer picture (PNG).

gal24_front.png

The front layer picture (PNG).

gal24.gal

The artwork Gerber (RS274X) file.

gal24.gbl

The back (solder side) Gerber (RS274X) file

gal24.gtl

The front (component side) Gerber (RS274X) file.

gal24.gml

The mask (both sides) Gerber RS274X) file.

gal24.drl

The drill (Excellon) file.

gal24.tol

The tool file that lists hole counts.

Tables

The table below shows were each of the BD signals winds up:

ZIF Pin	GAL Pin	20V8	22V10 20XV10 20RA10	6001 6002	EMDP1 Pin
1	1	VIL	VIL	VIL	BD19
2	2	EDIT	EDIT	EDIT	VAR2
3	3	RA1	P/V-	VIL	BD20
4	4	RA2	RA0	RA0	BD2
5	5	RA3	RA1	RA1	BD4
6	6	VIL	RA2	RA2	BD6
7	7	VIL	RA3	RA3	BD8
8	8	RA4	RA4	RA4	BD10
9	9	RA5	RA5	RA5	BD12
10	10	SCLK	SCLK	SCLK	BD14
11	11	SDIN	SDIN	SDIN	BD16
12	12	GND	GND	GND	GND
29	13	STB-	STB-	STB-	BD15
30	14	VIL	SDOUT	SDOUT	BD13
31	15	SDOUT	VIL	VIL	BD11
32	16	VIL	VIL	VIL	BD9
33	17	VIL	VIL	VIL	BD7
34	18	VIL	VIL	VIL	BD5
35	19	VIL	VIL	VIL	BD3
36	20	VIL	VIL	VIL	BD1
37	21	RA0	VIL	VIL	BD0
38	22	P/V-	VIL	VIL	BD17
39	23	VIL	VIL	P/V-	BD18
40	24	VCC	VCC	VCC	VCC

The table below shows were each of the pins goes:

Issues

Any fabrication issues will be listed here.