9
1.2 Unpacking
Precautions
Some components on WAFER-4821 SBC are very sensitive to static electric charges
and can be damaged by a sudden rush of power. To protect it from unintended
damage, follow the precautions below:
i. Ground yourself to remove any static charge before touching your WAFER-4821
SBC. You can do it by using a grounded wrist strap at all times or by frequently
touching any conducting materials that is connected to the ground.
ii. Handle your WAFER-4821 SBC by its edges. Do not touch IC chips, leads or
circuitry if not necessary.
iii. Do not plug any connector or jumper while the power is on.
1.3 CPU Setting for WAFER-4821
•
JP5: CPU CLOCK SETTING:
The system clock is generated by the ICS650R-01, and the different CPU clock
frequency can be selected by JP5 and shown as following table:
CPU CLK
1-2
3-4
75MHz
ON
ON
100MHz
OFF
OFF
