ATXMEGA16D4-CU Atmel, ATXMEGA16D4-CU Datasheet - Page 17

• Manufacturer Part Number: ATXMEGA16D4-CU
• Description: MCU AVR 16KB FLASH 49VFBGA
• Manufacturer: Atmel
• Series: AVR® XMEGAr

Specifications of ATXMEGA16D4-CU

• Core Processor: AVR
• Core Size: 8/16-Bit
• Speed: 32MHz
• Connectivity: I²C, IrDA, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 34
• Program Memory Size: 16KB (8K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 1K x 8
• Ram Size: 2K x 8
• Voltage - Supply (vcc/vdd): 1.6 V ~ 3.6 V
• Data Converters: A/D 12x12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 49-VFBGA
• Processor Series: ATXMEGA16x
• Core: AVR8
• Data Bus Width: 8 bit
• Data Ram Size: 8 KB
• Interface Type: 2-Wire, SPI
• Maximum Clock Frequency: 32 MHz
• Number Of Programmable I/os: 34
• Number Of Timers: 4
• Operating Supply Voltage: 1.6 V to 3.6 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: EWAVR, EWAVR-BL
• Development Tools By Supplier: ATAVRDRAGON, ATSTK500, ATSTK600, ATAVRISP2, ATAVRONEKIT
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 12 bit, 12 Channel
• On-chip Dac: 12 bit, 12 Channel
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

9. System Clock and Clock options
9.1
9.2
8135J–AVR–12/10
Features
Overview
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XMEGA D4 has an advanced clock system, supporting a large number of clock sources. It incor-
porates both accurate integrated oscillators, external crystal oscillators and resonators. A high
frequency 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.
A Crystal Oscillator Failure Monitor can be enabled to issue a Non-Maskable Interrupt and
switch to internal oscillator if the external oscillator fails.
pal clock system in XMEGA D4.
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 time 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
Figure 9-1 on page 18
XMEGA D4
shows the princi-
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