ATA8743 ATMEL Corporation, ATA8743 Datasheet - Page 43

• Manufacturer Part Number: ATA8743
• Manufacturer: ATMEL Corporation

9152A–INDCO–07/09
Figure 14-2. Crystal Oscillator Connections
The Oscillator can operate in three different modes, each optimized for a specific frequency
range. The operating mode is selected by the fuses CKSEL3..1 as shown in
43.
Table 14-3.
Notes:
The CKSEL0 Fuse together with the SUT1..0 Fuses select the start-up times as shown in
14-4 on page
CKSEL3..1
100
101
110
111
(1)
1. This option should not be used with crystals, only with ceramic resonators.
44.
Crystal Oscillator Operating Modes
Frequency Range (MHz)
0.4 - 0.9
0.9 - 3.0
3.0 - 8.0
8.0 -
C2
C1
Recommended Range for Capacitors C1 and
XTAL2
XTAL1
GND
C2 for Use with Crystals (pF)
12 - 22
12 - 22
12 - 22
–
Table 14-3 on page
ATA8743
Table
43