HMS99C52 Datasheet, PDF (40/43 Pages) Hynix Semiconductor – 8-BIT SINGLE-CHIP MICROCONTROLLERS

OSCILLATOR CIRCUIT
HMS99C5X Series
CRYSTAL OSCILLATOR MODE
DRIVING FROM EXTERNAL SOURCE
C2
XTAL2
P-LCC-44/Pin 20
P-DIP-40/Pin 18
M-QFP-44/Pin 14
N.C.
XTAL2
P-LCC-44/Pin 20
P-DIP-40/Pin 18
M-QFP-44/Pin 14
C1
External Oscillator
XTAL1
Signal
XTAL1
P-LCC-44/Pin 21
P-LCC-44/Pin 21
P-DIP-40/Pin 19
P-DIP-40/Pin 19
M-QFP-44/Pin 15
M-QFP-44/Pin 15
C1, C2 = 30pF ±10pF for Crystals
For Ceramic Resonators, contact resonator manufacturer.
Figure 12. 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.
36
Jan. 2003 Ver 1.0