ATAVRDISPLAYX Atmel, ATAVRDISPLAYX Datasheet - Page 76

• Manufacturer Part Number: ATAVRDISPLAYX
• Description: KIT EVAL XMEGA DISPLAY
• Manufacturer: Atmel

Specifications of ATAVRDISPLAYX

• Main Purpose: *
• Embedded: *
• Utilized Ic / Part: *
• Primary Attributes: *
• Secondary Attributes: *
• Silicon Manufacturer: Atmel
• Silicon Family Name: ATxmega
• Kit Contents: Board
• Features: Temperature Sensor, Mono Speaker Via Audio Amplifier
• Svhc: No SVHC (15-Dec-2010)
• Core Architecture: AVR
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

7. System Clock and Clock options
7.1
7.2
8077H–AVR–12/09
Features
Overview
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XMEGA has a flexible clock system, supporting a large number of clock sources. It incorporates
both accurate integrated oscillators, and external crystal oscillators and resonators. A high fre-
quency Phase Locked Loop (PLL) and clock prescalers can be used to generate a wide range of
clock frequencies. A calibration feature (DFLL) is available, and can be used for automatic run-
time calibration of the internal oscillators. A Crystal Oscillator Failure Monitor can be enabled to
issue a Non-Maskable Interrupt and switch to internal oscillator if the external oscillator fails.
After reset, the device will always start up running from the 2 MHz internal oscillator. During nor-
mal operation, the System Clock source and prescalers can be changed from software at any
time.
Figure 7-1 on page 77
need to be active at a given time. The clocks to the CPU and peripherals can be stopped using
sleep modes and power reduction registers as described in
page
Fast start-up time
Safe run-time clock switching
Internal Oscillators:
External clock options
PLL with internal and external clock options with 1 to 31x multiplication
Clock Prescalers with 1 to 2048x division
Fast peripheral clock running at 2 and 4 times the CPU clock speed
Automatic Run-Time Calibration of internal oscillators
Crystal Oscillator failure detection
– 32 MHz run-time calibrated RC oscillator
– 2 MHz run-time calibrated RC oscillator
– 32.768 kHz calibrated RC oscillator
– 32 kHz Ultra Low Power (ULP) oscillator with 1 kHz output
– 0.4 - 16 MHz Crystal Oscillator
– 32.768 kHz Crystal Oscillator
– External clock
95.
presents the principal clock system in the XMEGA. All of the clocks do not
”Power Management and Sleep” on
XMEGA A
76