参数资料
| 型号： | AT91SAM7X256B-AU |
| 厂商： | Atmel |
| 文件页数： | 3/44页 |
| 文件大小： | 0K |
| 描述： | IC MCU 256KB FLASH 100LQFP |
| 产品培训模块： | SAM9 MPU Boot Solutions & Application Deployment AT91SAM7X and SAM7XC Flash-based Microcontrollers MCU Product Line Introduction |
| 标准包装： | 90 |
| 系列： | SAM7X |
| 核心处理器： | ARM7 |
| 芯体尺寸： | 16/32-位 |
| 速度： | 55MHz |
| 连通性： | CAN，以太网，I²C，SPI，SSC，UART/USART，USB |
| 外围设备： | 欠压检测/复位，DMA，POR，PWM，WDT |
| 输入/输出数： | 62 |
| 程序存储器容量： | 256KB（256K x 8） |
| 程序存储器类型： | 闪存 |
| RAM 容量： | 64K 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： | 100-LQFP |
| 包装： | 托盘 |
第1页第2页当前第3页第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
11
6120GS–ATARM–07-Apr-11
SAM7X512/256/128 Summary
5.
Power Considerations
5.1
Power Supplies
The SAM7X512/256/128 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. 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.
VDDOUT pin. It is the output of the 1.8V voltage regulator.
VDDIO pin. It powers the I/O lines; voltage ranges from 3.0V to 3.6V, 3.3V nominal.
VDDFLASH pin. It powers the USB transceivers and 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.
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 pro-
vided and should be connected as shortly as possible to the system ground plane.
5.2
Power Consumption
The SAM7X512/256/128 has a static current of less than 60 A on VDDCORE at 25°C, includ-
ing the RC oscillator, the voltage regulator and the power-on reset when the brownout detector
is deactivated. Activating the brownout detector adds 28 A static current.
The dynamic power consumption on VDDCORE is less than 90 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 SAM7X512/256/128 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 oscil-
lations. The best way to achieve this is to use two capacitors in parallel: one external 470 pF (or
1 nF) NPO capacitor should be connected between VDDOUT and GND as close to the chip as
possible. One external 2.2 F (or 3.3 F) X7R capacitor should 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.
相关PDF资料 |
PDF描述 |
|---|---|
| ATMEGA165PV-8MU | IC AVR MCU 16K 8MHZ 64-QFN |
| AT32UC3C1256C-AUT | IC MCU AVR32 256K FLASH 100TQFP |
| USB-A1HSW6 | CONN USB TYPE A R/A WHITE |
| UX60SD-MB-5S55 | CONN RCPT USB MINI B MID MOUNT |
| UX60A-MB-5ST | CONN RECEPT MINI USB2.0 5POS |
相关代理商/技术参数 |
参数描述 |
|---|---|
| AT91SAM7X256B-AU SL383 | 制造商:Atmel Corporation 功能描述:. - LQFP,GREEN,IND TEMP, MRL B |
| AT91SAM7X256B-AU-999 | 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 |
| AT91SAM7X256B-CU | 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 |
| AT91SAM7X256B-CU-999 | 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 |
| AT91SAM7X256C-AU | 功能描述:微处理器 - MPU LQFP GRN IND TMP MRL C RoHS:否 制造商:Atmel 处理器系列:SAMA5D31 核心:ARM Cortex A5 数据总线宽度:32 bit 最大时钟频率:536 MHz 程序存储器大小:32 KB 数据 RAM 大小:128 KB 接口类型:CAN, Ethernet, LIN, SPI,TWI, UART, USB 工作电源电压:1.8 V to 3.3 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:FBGA-324 |
发布紧急采购，3分钟左右您将得到回复。