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Operation 3-18 AutoSite User Manual 4. Insert the de vice into the MatchBo ok, as shown in F igure 3-13. Make sure you insert the device a ccording to the alig nment diagram o n the MatchBoo k. Clos e the Match Book. Not…

Operation

AutoSite User Manual 3-17

Inserting PLCC

Devices and Using

MatchBooks

Read this section if you will be using the Stand Alone Kit (a PLCC Base

and a set of MatchBooks) to program PLCC devices.

Data I/O has developed a new method to accommodate the special

nature of PLCC packages. The method uses the MatchBook, which holds

the PLCC device in place on the PLCC Base. When the device is locked

into place, the conductive pad on the bottom of the PLCC Base forms a

conductive path between the pin drivers in the pin driver head and the

device in the MatchBook.

MatchBooks do away with clumsy and expensive sockets and adapters,

and make inserting and removing surface mount devices much easier

and faster. MatchBooks eliminate the guesswork involved when you

insert a PLCC device into a socket. All you have to do is align pin 1 and

set the device in the MatchBook.

Inserting a Device Into a

MatchBook

The instructions below explain how to use a MatchBook and how to

insert and remove a device from a MatchBook.

1. Insert the PLCC Base into AutoSite. Lock the Base into place. See the

section titled “Inserting the DIP or PLCC Base” for information on

inserting the PLCC Base.

2. Select the MatchBook for the device you are going to use.

3. Insert the MatchBook into the PLCC Base as shown in Figure 3-12.

First, set the front edge of the MatchBook onto the PLCC Base. Then

lower the back edge of the MatchBook into place on the Base.

Figure 3-12

Inserting a MatchBook into the

PLCC Base

0537-3

FRONT EDGE

(under locking

tabs)

BACK EDGE

LOCKING TAB

Operation

3-18 AutoSite User Manual

4. Insert the device into the MatchBook, as shown in Figure 3-13. Make

sure you insert the device according to the alignment diagram on the

MatchBook. Close the MatchBook.

Note: Position the device so pin 1 is near to the retaining clip. There is a small

dot molded into each MatchBook to help you align your device. Each

MatchBook also has a beveled corner to help you align devices with a

chamfered corner to indicate pin 1.

5. Finally, close the MatchBook and press the retaining latch forward

with your thumb until the latch snaps into place, as shown in

Figure 3-14.

Removing a Device

From a MatchBook

To remove a device from the MatchBook, unsnap the retaining latch,

open the MatchBook, and lift out the device.

Figure 3-13

Inserting a Device into the PLCC

Base

Figure 3-14

Closing the MatchBook

0538-3

CHAMFERED

CORNER

PIN 1

0539-4

44 PIN PLCC

RETAINING LATCH

Operation

AutoSite User Manual 3-19

Preventive Maintenance

Conductive Pad

The conductive pad, the material the MatchBook rests on, should be kept

free of dirt to keep yields high and prolong the life of the pad. We

recommend that you inspect and clean the pad at least every 1000 device

insertions or monthly, whichever comes first.

Note: After a number of insertions, you may notice an indentation in the middle

of the conductive pad. The indentation is normal and does not degrade the

contact resistance or the performance of the MatchBook. It is also normal

for the pad to show signs of discoloration as it is used.

The life of the pad is dependent on proper care as well as the pin count

and package type of the device being used. Not all devices have the same

tolerances, and use of each device type may result in different life cycles

for the pad. If you experience an increase in device insertion errors or

continuity errors, or if you experience a sudden drop in programming

yields, the pad may need to be replaced.

Cleaning

Blow air over the pad to clean it. If you use compressed air, direct the air

stream from the front or back of the Base.

Note: To avoid lifting the pad off the circuit board, do not blow air from the side

of the pad.

To further clean the pad, apply a small amount of isopropyl alcohol on a

cotton swab and gently wipe off the pad to dislodge dirt. Make sure the

pad is clear of any cotton filaments left over after cleaning.

CAUTION: Do not clean the pad with any petroleum- or freon-based

products. These substances will cause premature

deterioration of the pad material.

Replacement Pad Kits

The Base has been designed to allow you to replace the pads quickly and

easily and to minimize downtime. To order a replacement pad kit,

contact Data I/O Customer Support as listed in the Preface.

SPA Block and Base

For optimal performance, keep the SPA block (see Figure 3-6) and bases

clean. The following messages during device operations could result

from dirt in the SPA block or base adapter.

ID Error

Continuity Error

Base Adapter not Installed

Device Insertion Error

Overcurrent Error

Base/Adapter Relay Failure

SPA Block Cleaning

To avoid error conditions caused by dirty or worn SPA blocks, we

recommend that you perform the following preventive maintenance

procedures.

• Keep the SPA block covered with a base or programming module

when not in use. To prevent base adapters from contaminating the

SPA block, store them in an uncontaminated area.