参数资料
型号: AT32UC3L032-AUT
厂商: Atmel
文件页数: 84/174页
文件大小: 0K
描述: IC MCU 32K FLASH 16K SRAM 48TQFP
产品培训模块: MCU Product Line Introduction
AVR® UC3 Introduction
标准包装: 1,250
系列: AVR®32 UC3 L
核心处理器: AVR
芯体尺寸: 32-位
速度: 50MHz
连通性: I²C,SPI,UART/USART
外围设备: 欠压检测/复位,DMA,POR,PWM,WDT
输入/输出数: 36
程序存储器容量: 32KB(32K x 8)
程序存储器类型: 闪存
RAM 容量: 16K x 8
电压 - 电源 (Vcc/Vdd): 1.62 V ~ 3.6 V
数据转换器: A/D 9x12b
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: 48-TQFP
包装: 托盘
配用: ATSTK600-RC34-ND - STK600 ROUTING CARD AVR
其它名称: 32UC3L032-AUT
32UC3L032-AUT-ND
36
32099I–01/2012
AT32UC3L016/32/64
6.
Supply and Startup Considerations
6.1
Supply Considerations
6.1.1
Power Supplies
The AT32UC3L016/32/64 has several types of power supply pins:
VDDIO: Powers I/O lines. Voltage is 1.8 to 3.3V nominal.
VDDIN: Powers I/O lines and the internal regulator. Voltage is 1.8 to 3.3V nominal.
VDDANA: Powers the ADC. Voltage is 1.8V nominal.
VDDCORE: Powers the core, memories, and peripherals. Voltage is 1.8V nominal.
The ground pins GND are common to VDDCORE, VDDIO, and VDDIN. The ground pin for
VDDANA is GNDANA.
When VDDCORE is not connected to VDDIN, the VDDIN voltage must be higher than 1.98V.
Refer to Section 32. on page 770 for power consumption on the various supply pins.
For decoupling recommendations for the different power supplies, please refer to the schematic
checklist.
6.1.2
Voltage Regulator
The AT32UC3L016/32/64 embeds a voltage regulator that converts from 3.3V nominal to 1.8V
with a load of up to 60mA. The regulator supplies the output voltage on VDDCORE. The regula-
tor may only be used to drive internal circuitry in the device. VDDCORE should be externally
connected to the 1.8V domains. See Section 6.1.3 for regulator connection figures.
Adequate output supply decoupling is mandatory for VDDCORE to reduce ripple and avoid
oscillations. The best way to achieve this is to use two capacitors in parallell between
VDDCORE and GND as close to the device as possible. Please refer to Section 32.8.1 on page
784 for decoupling capacitors values and regulator characteristics.
Figure 6-1.
Supply Decoupling
6.1.3
Regulator Connection
The AT32UC3L016/32/64 supports three power supply configurations:
3.3V single supply mode
1.8V single supply mode
3.3V supply mode, with 1.8V regulated I/O lines
3.3V
1.8V
VDDIN
VDDCORE
1.8V
Regulator
C
IN1
C
OUT1
C
OUT2
C
IN2
IN3
C
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