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2soldering ic socket, 3inserting cable head, 4fastening cable head – Renesas H8/3257 Series User Manual

Page 11: Soldering ic socket, Inserting cable head, Fastening cable head, Caution

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2.2.2

Soldering IC Socket

After fastening, solder the IC socket for an FP-64A package to the user system. Be sure to
completely solder the leads so that the solder slops gently over the leads and forms solder fillets.
(Use slightly more solder than the MCU.)

2.2.3

Inserting Cable Head

CAUTION

Check the location of pin 1 before inserting.

Align pin 1 on the IC socket for an FP-64A package on the user system with pin 1 on the user
system interface cable head, and insert the user system interface cable head into the IC socket on
the user system, as shown in figure 3.

2.2.4

Fastening Cable Head

CAUTION

1. Use a Phillips-type screwdriver whose head matches

the screw head.

2. The tightening torque must be 0.0784 N•m or less.

If the applied torque cannot be accurately measured,

stop tightening when the force required to turn the screw

becomes significantly greater than that needed when first

tightening. If a screw is tightened too much, the screw

head may break or an IC socket contact error may be

caused by a crack in the IC socket solder.

3. If the emulator does not operate correctly, cracks might

have occurred in the solder. Check conduction with

a tester and re-solder the IC socket if necessary.

Fasten the user system interface cable head to the IC socket for an FP-64A package on the user
system with the four screws (M2.0

x

12 mm) provided. Each screw should be tightened a little at

a time, alternating between screws on opposing corners. Take special care, such as manually
securing the IC socket soldered area, to prevent the soldered IC socket from being damaged by
overtightening the screws or twisting the components.

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