VRS51C1100-40-L ETC1 [List of Unclassifed Manufacturers], VRS51C1100-40-L Datasheet - Page 38
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VRS51C1100-40-L
Manufacturer Part Number
VRS51C1100-40-L
Description
Versa 8051 MCU with 128KB of IAP/ISP Flash
Manufacturer
ETC1 [List of Unclassifed Manufacturers]
Datasheet
1.VRS51C1100-40-L.pdf
(50 pages)
- Current page: 38 of 50
- Download datasheet (3Mb)
Crystal consideration
The crystal connected to the VRS51C1100 oscillator
input should be of a parallel type, operating in
fundamental mode.
The following table provides suggested capacitor and
resistor feedback values for different operating
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.
______________________________________________________________________________________________
www.ramtron.com
Valid for VRS51C1100
VRS51C1100
XTAL
XTAL
C1
C2
C1
C2
R
R
16MHz
3MHz
30 pF
30 pF
30 pF
30 pF
open
open
25MHz
6MHz
30 pF
30 pF
15 pF
15 pF
62KO
open
33MHz
6.8KO
9MHz
30 pF
30 pF
open
5 pF
5 pF
12MHz
40MHz
4.7KO
30 pF
30 pF
open
2 pF
2 pF
The user should review the technical literature supplied
with specific crystal or ceramic resonators or contact
the manufacturer to select the appropriate values for
external components.
C1
XTAL
C2
R
XTAL1
XTAL2
VRS51C1100
page 38 of 50
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