参数资料
型号: AT32UC3A0256-ALUT
厂商: Atmel
文件页数: 10/97页
文件大小: 0K
描述: IC MCU AVR32 256KB FLASH 144LQFP
产品培训模块: AVR UC3 Audio Application
MCU Product Line Introduction
AVR EVK1105 Digital Audio Gateway Kit
AVR® UC3 Introduction
标准包装: 300
系列: AVR®32 UC3 A0
核心处理器: AVR
芯体尺寸: 32-位
速度: 66MHz
连通性: EBI/EMI,以太网,I²C,SPI,SSC,UART/USART,USB OTG
外围设备: 欠压检测/复位,POR,PWM,WDT
输入/输出数: 109
程序存储器容量: 256KB(256K x 8)
程序存储器类型: 闪存
RAM 容量: 64K x 8
电压 - 电源 (Vcc/Vdd): 1.65 V ~ 1.95 V
数据转换器: A/D 8x10b
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: 144-LQFP
包装: 托盘
配用: ATSTK600-RC33-ND - STK600 ROUTING CARD AVR
ATEVK1105-ND - KIT EVAL FOR AT32UC3A0
ATAVRONEKIT-ND - KIT AVR/AVR32 DEBUGGER/PROGRMMR
ATEVK1100-ND - KIT DEV/EVAL FOR AVR32 AT32UC3A
18
AT32UC3A
7.2
Voltage Regulator
7.2.1
Single Power Supply
The AT32UC3A embeds a voltage regulator that converts from 3.3V to 1.8V. The regulator takes
its input voltage from VDDIN, and supplies the output voltage on VDDOUT. VDDOUT should be
externally connected to the 1.8V domains.
Adequate input supply decoupling is mandatory for VDDIN in order to improve startup stability
and reduce source voltage drop. Two input decoupling capacitors must be placed close to the
chip.
Adequate output supply decoupling is mandatory for VDDOUT to reduce ripple and avoid oscil-
lations. The best way to achieve this is to use two capacitors in parallel between VDDOUT and
GND as close to the chip as possible
Refer to Section 12.3 on page 42 for decoupling capacitors values and regulator characteristics
7.2.2
Dual Power Supply
In case of dual power supply, VDDIN and VDDOUT should be connected to ground to prevent
from leakage current.
3.3V
1.8V
VDDIN
VDDOUT
1.8V
Regulator
C
IN1
C
OUT1
C
OUT2
C
IN2
VDDIN
VDDOUT
32058KS–AVR32–01/12
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