ATA6617-P3QW Atmel, ATA6617-P3QW Datasheet - Page 52

• Manufacturer Part Number: ATA6617-P3QW
• Description: MCU W/LIN TX/5V REG/WTCDG 38VQFN
• Manufacturer: Atmel
• Series: AVR® ATA66 LIN-SBCr

Specifications of ATA6617-P3QW

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: I²C, LIN, SPI, UART/USART, USI
• Peripherals: Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
• Number Of I /o: 16
• Program Memory Size: 16KB (16K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 512 x 8
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 11x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 38-VQFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

4.5.2.4
52
Atmel ATA6616/ATA6617
Crystal Oscillator
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
a ceramic resonator may be used.
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
given by the manufacturer should be used.
Figure 4-11. Crystal Oscillator Connections
The Oscillator can operate in three different modes, each optimized for a specific frequency
range. The operating mode is selected by CKSEL3..1 fuses or by CSEL3..1 field as shown in
Table
Table 4-10.
The CKSEL0 Fuse together with the SUT1..0 Fuses or CSEL0 together with CSUT1..0 field
select the start-up times as shown in
Notes:
CKSEL3..1
CSEL3..1
4-10.
100
101
110
111
1. Flash Fuse bits
2. CLKSELR register bits
3. This option should not be used with crystals, only with ceramic resonators
(3)
(2)
(1)
Crystal Oscillator Operating Modes
Frequency Range (MHz)
8.0 - 16.0
0.4 - 0.9
0.9 - 3.0
3.0 - 8.0
Table
Table
C2
C1
4-10. For ceramic resonators, the capacitor values
4-11.
Recommended Range for Capacitors
C1 and C2 for Use with Crystals (pF)
XTAL2
XTAL1
GND
Figure
4-11. Either a quartz crystal or
12 - 22
12 - 22
12 - 22
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9132D–AUTO–12/10