参数资料
型号: ATSAM3N2BA-MU
厂商: Atmel
文件页数: 9/60页
文件大小: 0K
描述: MCU FLASH 64-QFN
产品培训模块: Touch Solutions on the Atmel ARM? Cortex?-M3 Based Flash Microcontrollers
特色产品: SAM3N Flash MCU
标准包装: 260
系列: SAM3N
核心处理器: ARM? Cortex?-M3
芯体尺寸: 32-位
速度: 48MHz
连通性: I²C,IrDA,SPI,UART/USART
外围设备: 欠压检测/复位,DMA,POR,PWM,WDT
输入/输出数: 47
程序存储器容量: 128KB(128K 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 10x10b,D/A 1x10b
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: 64-VFQFN 裸露焊盘
包装: 托盘
17
11011BS–ATARM–22-Feb-12
SAM3N Summary
5.
Power Considerations
5.1
Power Supplies
The SAM3N product has several types of power supply pins:
VDDCORE pins: Power the core, including the processor, the embedded memories and the
peripherals. Voltage ranges from 1.62V and 1.95V.
VDDIO pins: Power the Peripherals I/O lines, Backup part, 32 kHz crystal oscillator and
oscillator pads. Voltage ranges from 1.62V and 3.6V
VDDIN pin: Voltage Regulator, ADC and DAC Power Supply. Voltage ranges from 1.8V to
3.6V for the Voltage Regulator
VDDPLL pin: Powers the PLL, the Fast RC and the 3 to 20 MHz oscillators. Voltage ranges
from 1.62V and 1.95V.
5.2
Voltage Regulator
The SAM3N embeds a voltage regulator that is managed by the Supply Controller.
This internal regulator is intended to supply the internal core of SAM3N. It features two different
operating modes:
In Normal mode, the voltage regulator consumes less than 700 A static current and draws
60 mA of output current. Internal adaptive biasing adjusts the regulator quiescent current
depending on the required load current. In Wait Mode quiescent current is only 7 A.
In Backup mode, the voltage regulator consumes less than 1 A while its output (VDDOUT)
is driven internally to GND. The default output voltage is 1.80V and the start-up time to reach
Normal mode is less than100 s.
For adequate input and output power supply decoupling/bypassing, refer to the Voltage Regula-
tor section in the Electrical Characteristics section of the datasheet.
5.3
Typical Powering Schematics
The SAM3N supports a 1.62V-3.6V single supply mode. The internal regulator input connected
to the source and its output feeds VDDCORE. Figure 5-1 shows the power schematics.
As VDDIN powers the voltage regulator and the ADC/DAC, when the user does not want to use
the embedded voltage regulator, it can be disabled by software via the SUPC (note that it is dif-
ferent from Backup mode).
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