vrs51c1000 Ramtron Corporation, vrs51c1000 Datasheet - Page 36

• Manufacturer Part Number: vrs51c1000
• Description: Versa 8051 Mcu With 64kb Of Iap/isp Flash
• Manufacturer: Ramtron Corporation

Crystal consideration
The crystal connected to the VRS51C1000 oscillator
input should be of a parallel type, operating in
fundamental mode.
The following table provides suggested capacitor and
resistor
frequencies.
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.
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www.ramtron.com
Valid for VRS51C1000
VRS51C1000
XTAL
XTAL
C1
C2
C1
C2
R
R
feedback values
16MHz
3MHz
30 pF
30 pF
30 pF
30 pF
open
open
25MHz
6MHz
30 pF
30 pF
15 pF
15 pF
62K
open
for different operating
33MHz
6.8K
9MHz
30 pF
30 pF
10 pF
10 pF
open
12MHz
40MHz
4.7K
30 pF
30 pF
open
2 pF
2 pF
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.
C1
XTAL
C2
R
XTAL1
XTAL2
VRS51C1000
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