参数资料
| 型号： | AT91SAM7S32-AU-001 |
| 厂商： | Atmel |
| 文件页数： | 4/50页 |
| 文件大小： | 0K |
| 描述： | IC ARM7 MCU 32BIT 32K 48LQFP |
| 标准包装： | 250 |
| 系列： | SAM7S |
| 核心处理器： | ARM7 |
| 芯体尺寸： | 16/32-位 |
| 速度： | 55MHz |
| 连通性： | I²C，SPI，SSC，UART/USART |
| 外围设备： | 欠压检测/复位，POR，PWM，WDT |
| 输入/输出数： | 21 |
| 程序存储器容量： | 32KB（32K x 8） |
| 程序存储器类型： | 闪存 |
| RAM 容量： | 8K 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： | 48-LQFP |
| 包装： | 托盘 |
| 配用： | AT91SAM7S-EK-ND - KIT EVAL FOR ARM AT91SAM7S |
| 其它名称： | AT91SAM7S32-AU001 |
第1页第2页第3页当前第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页
12
SAM7S Series [DATASHEET]
6175KS–ATARM–25-Oct-12
5.
Power Considerations
5.1
Power Supplies
The SAM7S Series has six types of power supply pins and integrates a voltage regulator, allowing the device to be
supplied with only one voltage. The six power supply pin types are:
VDDIN pin. It powers the voltage regulator and the ADC; voltage ranges from 3.0V to 3.6V, 3.3V nominal.
VDDOUT pin. It is the output of the 1.8V voltage regulator.
VDDIO pin. It powers the I/O lines and the USB transceivers; dual voltage range is supported. Ranges from 3.0V
to 3.6V, 3.3V nominal or from 1.65V to 1.95V, 1.8V nominal. Note that supplying less than 3.0V to VDDIO prevents
any use of the USB transceivers.
VDDFLASH pin. It powers a part of the Flash and is required for the Flash to operate correctly; voltage ranges
from 3.0V to 3.6V, 3.3V nominal.
VDDCORE pins. They power the logic of the device; voltage ranges from 1.65V to 1.95V, 1.8V typical. It can be
connected to the VDDOUT pin with decoupling capacitor. VDDCORE is required for the device, including its
embedded Flash, to operate correctly.
During startup, core supply voltage (VDDCORE) slope must be superior or equal to 6V/ms.
VDDPLL pin. It powers the oscillator and the PLL. It can be connected directly to the VDDOUT pin.
No separate ground pins are provided for the different power supplies. Only GND pins are provided and should be
connected as shortly as possible to the system ground plane.
In order to decrease current consumption, if the voltage regulator and the ADC are not used, VDDIN, ADVREF, AD4,
AD5, AD6 and AD7 should be connected to GND. In this case VDDOUT should be left unconnected.
5.2
Power Consumption
The SAM7S Series has a static current of less than 60 A on VDDCORE at 25°C, including the RC oscillator, the voltage
regulator and the power-on reset. When the brown-out detector is activated, 20 A static current is added.
The dynamic power consumption on VDDCORE is less than 50 mA at full speed when running out of the Flash. Under
the same conditions, the power consumption on VDDFLASH does not exceed 10 mA.
5.3
Voltage Regulator
The SAM7S Series embeds a voltage regulator that is managed by the System Controller.
In Normal Mode, the voltage regulator consumes less than 100 A static current and draws 100 mA of output current.
The voltage regulator also has a Low-power Mode. In this mode, it consumes less than 25 A static current and draws 1
mA of output current.
Adequate output supply decoupling is mandatory for VDDOUT to reduce ripple and avoid oscillations. The best way to
achieve this is to use two capacitors in parallel: one external 470 pF (or 1 nF) NPO capacitor must be connected between
VDDOUT and GND as close to the chip as possible. One external 2.2 F (or 3.3 F) X7R capacitor must be connected
between VDDOUT and GND.
Adequate input supply decoupling is mandatory for VDDIN in order to improve startup stability and reduce source voltage
drop. The input decoupling capacitor should be placed close to the chip. For example, two capacitors can be used in
parallel: 100 nF NPO and 4.7 F X7R.
5.4
Typical Powering Schematics
The SAM7S Series supports a 3.3V single supply mode. The internal regulator is connected to the 3.3V source and its
output feeds VDDCORE and the VDDPLL. Figure 5-1 shows the power schematics to be used for USB bus-powered
systems.
相关PDF资料 |
PDF描述 |
|---|---|
| PIC16LC71-04/P | IC MCU OTP 1KX14 A/D 18DIP |
| 928034-3 | CONN HOUSING 96POS VERT 3ROW |
| 536565-1 | 2MMFB,SHRD,024,SIG,HDR |
| PIC24FJ64GB004-I/ML | IC MCU 16BIT 64KB FLASH 44QFN |
| PIC16LF84A-04/SS | IC MCU FLASH 1KX14 EE 20SSOP |
相关代理商/技术参数 |
参数描述 |
|---|---|
| AT91SAM7S32-AU-999 | 功能描述:ARM微控制器 - MCU Microcontroller RoHS:否 制造商:STMicroelectronics 核心:ARM Cortex M4F 处理器系列:STM32F373xx 数据总线宽度:32 bit 最大时钟频率:72 MHz 程序存储器大小:256 KB 数据 RAM 大小:32 KB 片上 ADC:Yes 工作电源电压:1.65 V to 3.6 V, 2 V to 3.6 V, 2.2 V to 3.6 V 工作温度范围:- 40 C to + 85 C 封装 / 箱体:LQFP-48 安装风格:SMD/SMT |
| AT91SAM7S32B-AU | 功能描述:ARM微控制器 - MCU LQFP IND TEMP MRL B RoHS:否 制造商:STMicroelectronics 核心:ARM Cortex M4F 处理器系列:STM32F373xx 数据总线宽度:32 bit 最大时钟频率:72 MHz 程序存储器大小:256 KB 数据 RAM 大小:32 KB 片上 ADC:Yes 工作电源电压:1.65 V to 3.6 V, 2 V to 3.6 V, 2.2 V to 3.6 V 工作温度范围:- 40 C to + 85 C 封装 / 箱体:LQFP-48 安装风格:SMD/SMT |
| AT91SAM7S32B-AU-001 | 制造商:Atmel Corporation 功能描述:32BIT SMART ARM7 32K FLASH 91SAM7 制造商:Atmel Corporation 功能描述:32BIT SMART ARM7 32K FLASH, 91SAM7 |
| AT91SAM7S32B-AU-999 | 功能描述:ARM微控制器 - MCU Ind. Temp Green RoHS:否 制造商:STMicroelectronics 核心:ARM Cortex M4F 处理器系列:STM32F373xx 数据总线宽度:32 bit 最大时钟频率:72 MHz 程序存储器大小:256 KB 数据 RAM 大小:32 KB 片上 ADC:Yes 工作电源电压:1.65 V to 3.6 V, 2 V to 3.6 V, 2.2 V to 3.6 V 工作温度范围:- 40 C to + 85 C 封装 / 箱体:LQFP-48 安装风格:SMD/SMT |
| AT91SAM7S32B-MU | 功能描述:ARM微控制器 - MCU IND TEMP MRL B RoHS:否 制造商:STMicroelectronics 核心:ARM Cortex M4F 处理器系列:STM32F373xx 数据总线宽度:32 bit 最大时钟频率:72 MHz 程序存储器大小:256 KB 数据 RAM 大小:32 KB 片上 ADC:Yes 工作电源电压:1.65 V to 3.6 V, 2 V to 3.6 V, 2.2 V to 3.6 V 工作温度范围:- 40 C to + 85 C 封装 / 箱体:LQFP-48 安装风格:SMD/SMT |
发布紧急采购，3分钟左右您将得到回复。