AT32UC3B0256-Z2UR Atmel, AT32UC3B0256-Z2UR Datasheet - Page 16
![MCU AVR32 256K FLASH 64-QFN](/photos/12/13/121326/313-64-qfn_sml.jpg)
AT32UC3B0256-Z2UR
Manufacturer Part Number
AT32UC3B0256-Z2UR
Description
MCU AVR32 256K FLASH 64-QFN
Manufacturer
Atmel
Series
AVR®32 UC3r
Datasheet
1.AT32UC3B164-AUR.pdf
(680 pages)
Specifications of AT32UC3B0256-Z2UR
Package / Case
64-QFN
Voltage - Supply (vcc/vdd)
1.65 V ~ 1.95 V
Operating Temperature
-40°C ~ 85°C
Speed
60MHz
Number Of I /o
44
Core Processor
AVR
Program Memory Type
FLASH
Ram Size
32K x 8
Program Memory Size
256KB (256K x 8)
Data Converters
A/D 8x10b
Oscillator Type
Internal
Peripherals
Brown-out Detect/Reset, DMA, POR, PWM, WDT
Connectivity
I²C, IrDA, SPI, SSC, UART/USART, USB
Core Size
32-Bit
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
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- Download datasheet (10Mb)
5.6.2.2
5.6.3
32059J–12/2010
Analog-to-Digital Converter (ADC) reference.
Dual Power Supply
Refer to
characteristics.
For decoupling recommendations for VDDIO, VDDANA, VDDCORE and VDDPLL, please refer
to the Schematic checklist.
In case of dual power supply, VDDIN and VDDOUT should be connected to ground to prevent
from leakage current.
To avoid over consumption during the power up sequence, VDDIO and VDDCORE voltage dif-
ference needs to stay in the range given
Figure 5-3.
The ADC reference (ADVREF) must be provided from an external source. Two decoupling
capacitors must be used to insure proper decoupling.
Figure 5-4.
Refer to
characteristics.
In case ADC is not used, the ADVREF pin should be connected to GND to avoid extra
consumption.
0.5
3.5
2.5
1.5
2
4
3
1
0
0
Section 28.4 on page 622
Section 28.3 on page 622
VDDIO versus VDDCORE during power up sequence
ADVREF Decoupling
Extra consumption on VDDIO
0.2
3.3V
0.4
C
VREF2
0.6
C
VREF1
Figure
for decoupling capacitors values and regulator
for decoupling capacitors values and electrical
0.8
VDDCORE (V)
5-3.
ADVREF
Extra consumption on VDDCORE
1
1.2
1.4
1.6
AT32UC3B
1.8
2
16
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