GMS81C1102 / GMS81C1202
Vdd
Note: When using a system clock oscillator, carry out wir-
ing in the broken line area in Figure 14-2 to prevent
any effects from wiring capacities.
Rext
Xin
- Minimize the wiring length.
Cext
- Do not allow wiring to intersect with other signal
conductors.
Xout
fxin÷4
- Do not allow wiring to come near changing
high current.
- Set the potential of the grounding position of the os-
cillator capacitor to that of VSS. Do not ground to
any ground pattern where high current is
present.
Figure 14-4 RC Oscillator Connections
The oscillator frequency, divided by 4, is output from the
Xout pin, and can be used for test purpose or to synchroze
other logic.
- Do not fetch signals from the oscillator.
To set the RC oscillation, it should be programmed
RCOPT bit to "1" to CONFIG (0FF0H). ( Refer to DE-
VICE CONFIGURATION AREA )
42
Jan. 2002 ver 2.0
HYNIX [ HYNIX SEMICONDUCTOR ]
