GMS90 Series
HYUNDAI MicroElectronics
OSCILLATOR CIRCUIT
CRYSTAL OSCILLATOR MODE
DRIVING FROM EXTERNAL SOURCE
C2
C1
N.C.
XTAL2
XTAL2
P-LCC-44/Pin 20
P-DIP-40/Pin 18
M-QFP-44/Pin 14
P-LCC-44/Pin 20
P-DIP-40/Pin 18
M-QFP-44/Pin 14
External Oscillator
Signal
XTAL1
XTAL1
P-LCC-44/Pin 21
P-DIP-40/Pin 19
M-QFP-44/Pin 15
P-LCC-44/Pin 21
P-DIP-40/Pin 19
M-QFP-44/Pin 15
C1, C2 = 30pF ±10pF for Crystals
For Ceramic Resonators, contact resonator manufacturer.
Figure 10. Recommended Oscillator Circuits
Oscillation circuit is designed to be used either with a ceramic resonator or crystal oscillator. Since each crystal
and ceramic resonator have their own characteristics, the user should consult the crystal manufacturer for ap-
propriate values of external components.
Oct. 2000 Ver 3.1a
45
HYNIX [ HYNIX SEMICONDUCTOR ]
