參數(shù)資料
型號： AT32UC3L032-D3UR
廠商： Atmel
文件頁數(shù)： 84/174頁
文件大?。?/td> 0K
描述： MCU AVR32 32KB FLASH 48TLLGA
標準包裝： 8,000
系列： AVR®32 UC3 L
核心處理器： AVR
芯體尺寸： 32-位
速度： 50MHz
連通性： I²C，SPI，UART/USART
外圍設備： 欠壓檢測/復位，DMA，POR，PWM，WDT
輸入/輸出數(shù)： 36
程序存儲器容量： 32KB（32K x 8）
程序存儲器類型： 閃存
RAM 容量： 16K x 8
電壓 - 電源 (Vcc/Vdd)： 1.62 V ~ 3.6 V
數(shù)據(jù)轉(zhuǎn)換器： A/D 9x12b
振蕩器型： 內(nèi)部
工作溫度： -40°C ~ 85°C
封裝/外殼： 48-UFLGA
包裝： 帶卷 (TR)
其它名稱： 32UC3L032-D3UR
32UC3L032-D3UR-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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