ATA6613-EK Atmel, ATA6613-EK Datasheet - Page 55

• Manufacturer Part Number: ATA6613-EK
• Description: BOARD DEMO LIN-MCM FOR ATA6613
• Manufacturer: Atmel

Specifications of ATA6613-EK

• Main Purpose: Interface, LIN + MCU
• Embedded: Yes, MCU, 8-Bit
• Utilized Ic / Part: ATA6613
• Primary Attributes: LIN-SBC (System-Basis-Chip) Transceiver, LIN 2.0, Voltage Regulator, Window Watchdog
• Secondary Attributes: 16 kB Flash, 4 Power Modes: Pre-Normal, Normal, Sleep, Silent, 48-QFN
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

6.6.4
9111H–AUTO–01/11
Full Swing Crystal Oscillator
Pins XTAL1 and XTAL2 are input and output, respectively, of an inverting amplifier which can
be configured for use as an On-chip Oscillator, as shown in
quartz crystal or a ceramic resonator may be used.
This Crystal Oscillator is a full swing oscillator, with rail-to-rail swing on the XTAL2 output. This
is useful for driving other clock inputs and in noisy environments. The current consumption is
higher than the
Oscillator will only operate for V
C1 and C2 should always be equal for both crystals and resonators. The optimal value of the
capacitors depends on the crystal or resonator in use, the amount of stray capacitance, and
the electromagnetic noise of the environment. Some initial guidelines for choosing capacitors
for use with crystals are given in
values given by the manufacturer should be used.
The operating mode is selected by the fuses CKSEL3..1 as shown in
Table 6-8.
Notes:
Figure 6-13. Crystal Oscillator Connections
Frequency Range
1. The frequency ranges are preliminary values. Actual values are TBD.
2. If 8 MHz frequency exceeds the specification of the device (depends on V
Fuse can be programmed in order to divide the internal frequency by 8. It must be ensured
that the resulting divided clock meets the frequency specification of the device.
0.4 - 20
Full Swing Crystal Oscillator Operating Modes
“Low Power Crystal Oscillator” on page
(1)
(MHz)
CC
Table 6-9 on page
= 2.7 - 5.5V.
CKSEL3..1
C2
C1
011
Atmel ATA6612/ATA6613
56. For ceramic resonators, the capacitor
Recommended Range for Capacitors C1
XTAL2
XTAL1
GND
53. Note that the Full Swing Crystal
Figure 6-12 on page
(2)
and C2 (pF)
Table
12 - 22
6-8.
CC
), the CKDIV8
53. Either a
55