参数资料
型号: ATSAM3N1BA-MU
厂商: Atmel
文件页数: 11/60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: 64KB(64K x 8)
程序存储器类型: 闪存
RAM 容量: 8K 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: *
19
11011BS–ATARM–22-Feb-12
SAM3N Summary
Figure 5-3.
Core Externally Supplied (backup battery)
5.4
Active Mode
Active mode is the normal running mode with the core clock running from the fast RC oscillator,
the main crystal oscillator or the PLL. The power management controller can be used to adapt
the frequency and to disable the peripheral clocks.
5.5
Low Power Modes
The various low-power modes of the SAM3N are described below:
5.5.1
Backup Mode
The purpose of backup mode is to achieve the lowest power consumption possible in a system
that is performing periodic wakeups to carry out tasks but not requiring fast startup time
(<0.1ms). Total current consumption is 3 A typical.
The Supply Controller, zero-power power-on reset, RTT, RTC, Backup registers and 32 kHz
oscillator (RC or crystal oscillator selected by software in the Supply Controller) are running. The
regulator and the core supply are off.
Backup mode is based on the Cortex-M3 deep sleep mode with the voltage regulator disabled.
The SAM3N can be awakened from this mode through WUP0-15 pins, the supply monitor (SM),
the RTT or RTC wake-up event.
Backup mode is entered by using WFE instructions with the SLEEPDEEP bit in the System Con-
trol Register of the Cortex-M3 set to 1. (See the Power management description in The ARM
Cortex M3 Processor section of the product datasheet).
Exit from Backup mode happens if one of the following enable wake-up events occurs:
WKUPEN0-15 pins (level transition, configurable debouncing)
ADC, DAC
I/Os.
VDDIN
Voltage
Regulator
3.3V
LDO
Backup
Battery
+
-
ON/OFF
IN
OUT
VDDOUT
Main Supply
VDDCORE
ADC, DAC Supply
(3V-3.6V)
VDDIO
VDDPLL
PIOx (Output)
WAKEUPx
External wakeup signal
Note: The two diodes provide a “switchover circuit” (for illustration purpose)
between the backup battery and the main supply when the system is put in
backup mode.
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