View detail for AVR603 : STK200 Modification from Rev. B to Rev C

View detail for AVR603 : STK200 Modification from Rev. B to Rev C
Modification for Rev. B to Rev. C
Rev. C boards have been introduced to correct clock pin changes on the Atmel
AT90S4333/AT90S2333, 28-pin analog devices. Users of Rev. B boards may experience programming or running problems with these devices. This modification will
correct any problems. The solution is to move the clock signal from the clock output
pin to the correct input pin.
To see if your board has been modified at the factory before shipping please check
the following items:
• Does the board have a handwritten /c after the serial number on the back of the
board?
• Has the trace been cut as shown in Figure 2?
• Does the board have a yellow sticker over the modification area?
If any of the above apply, your board has been modified at the factory.
Modification for
Rev. B to Rev. C
STK200
Errata Sheet
If none of the above are found on your board, follow the instructions below to modify
your board.
People with some soldering skills may do this modification themselves. This document
shows how to do the modification in a safe way.
Required Parts
• A short piece of single strand wire, max 0.5 mm diameter and about 40 mm long.
• A small sticky label or some nail varnish.
Required Tools
• ESD-safe workstation.
• A soldering iron.
• Solder.
• A sharp craft knife.
• Wire cutters.
Work Description
1. This work must only take place on an ESD-safe workstation, as the STK200
contains ESD sensitive components that may be damaged if not handled
correctly.
2. Place the board upside down on the workstation and familiarize yourself with
the layout of the board by comparing it to the trace layout in Figure 1. Note the
marked area for the modification.
3. Note the marked trace in Figure 2 and with a craft knife, cut the trace as shown
by the line.
4. With the craft knife, clean off the green solder resist from the portion of trace
marked in Figure 3.
5. With a soldering iron, put a small quantity of solder on the trace you have
exposed on the side away from the pin as shown in Figure 3.
Rev. 1462A–08/99
1
6. Take the piece of wire and tin it coat one end with
the solder. Now solder it to the trace you have
exposed in step 5.2 of the operation.
8. Cover the wire and solder, and any exposed area of
board, with a small sticky label or some clear nail
varnish.
7. Take the wire across to the pin shown in Figure 4
and cut it to a suitable length. Tin the end and solder it to the pin.
9. Your board has now been modified to work correctly
with the devices.
Figure 1. The board before modification.
Figure 2. The trace to be cut.
2
Errata Sheet
Errata Sheet
Figure 3. Where to clean the board.
Figure 4. Solder one end of the wire to this pin.
Figure 5. Link the other end of the wire to the cut trace.
The board is now finished.
3
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© Atmel Corporation 1999.
Atmel Corporation makes no warranty for the use of its products, other than those expressly contained in the Company’s standard warranty which is detailed in Atmel’s Terms and Conditions located on the Company’s web site. The Company assumes no responsibility for
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Printed on recycled paper.
1462A–08/99/xM
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