VRS51C1000
The user should check the specific crystal or ceramic
resonator technical literature available or contact the
manufacturer to select the appropriate values for the
external components.
Crystal consideration
The crystal connected to the VRS51C1000 oscillator
input should be of a parallel type, operating in
fundamental mode.
XTAL1
The following table provides suggested capacitor and
resistor feedback values for different operating
frequencies.
XTAL
Valid for VRS51C1000
VRS51C1000
XTAL
C1
3MHz
30 pF
30 pF
open
6MHz
30 pF
30 pF
open
9MHz
30 pF
30 pF
open
12MHz
30 pF
30 pF
open
C2
R
R
XTAL2
XTAL
C1
C2
16MHz
30 pF
30 pF
open
25MHz
15 pF
15 pF
62KΩ
33MHz
10 pF
10 pF
6.8KΩ
40MHz
2 pF
2 pF
C1
C2
R
4.7KΩ
Note: Oscillator circuits may differ with different
crystals or ceramic resonators in higher oscillator
frequencies.
Crystals or ceramic resonator characteristics vary from
one manufacturer to the other.
______________________________________________________________________________________________
www.ramtron.com page 36 of 48
RAMTRON [ RAMTRON INTERNATIONAL CORPORATION ]
