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| 型号： | ATSAM3X4EA-AU |
| 厂商： | Atmel |
| 文件页数： | 20/71页 |
| 文件大小： | 0K |
| 描述： | IC MCU 2X128KB CORTEX-M3 144-QFP |
| 标准包装： | 60 |
| 系列： | SAM3X |
| 核心处理器： | ARM? Cortex?-M3 |
| 芯体尺寸： | 32-位 |
| 速度： | 84MHz |
| 连通性： | CAN，EBI/EMI，以太网，I²C，IrDA，LIN，MMC，SPI，SSC，UART/USART，USB |
| 外围设备： | 欠压检测/复位，DMA，I²S，POR，PWM，WDT |
| 输入/输出数： | 103 |
| 程序存储器容量： | 256KB（256K x 8） |
| 程序存储器类型： | 闪存 |
| RAM 容量： | 68K x 8 |
| 电压 - 电源 (Vcc/Vdd)： | 1.62 V ~ 1.95 V |
| 数据转换器： | A/D 16x12b，D/A 2x12b |
| 振荡器型： | 内部 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 144-LQFP |
| 包装： | 托盘 |
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29
11057BS–ATARM–13-Jul-12
SAM3X/A
29
11057BS–ATARM–13-Jul-12
SAM3X/A
6.
Input/Output Lines
The SAM3X/A has different kinds of input/output (I/O) lines, such as general purpose I/Os
(GPIO) and system I/Os. GPIOs can have alternate functions thanks to multiplexing capabilities
of the PIO controllers. The same PIO line can be used whether in IO mode or by the multiplexed
peripheral. System I/Os include pins such as test pins, oscillators, erase or analog inputs.
With a few exceptions, the I/Os have input schmitt triggers. Refer to the footnotes associated
with PIOA to PIOF on page 14, at the end of Table 3-1, “Signal Description List”.
6.1
General Purpose I/O Lines (GPIO)
GPIO Lines are managed by PIO Controllers. All I/Os have several input or output modes such
as pull-up, input schmitt triggers, multi-drive (open-drain), glitch filters, debouncing or input
change interrupt. Programming of these modes is performed independently for each I/O line
through the PIO controller user interface. For more details, refer to the “PIO Controller” section
of the product datasheet.
The input output buffers of the PIO lines are supplied through VDDIO power supply rail.
The SAM3X/A embeds high speed pads able to handle up to 65 MHz for HSMCI and SPI clock
lines and 45 MHz on other lines. See product AC Characteristics for more details. Typical pull-up
value is 100 k
Ω for all I/Os.
Each I/O line also embeds an ODT (On-Die Termination), (see Figure 6-1 below). ODT consists
of an internal series resistor termination scheme for impedance matching between the driver
output (SAM3) and the PCB track impedance preventing signal reflection. The series resistor
helps to reduce IOs switching current (di/dt) thereby reducing in turn, EMI. It also decreases
overshoot and undershoot (ringing) due to inductance of interconnect between devices or
between boards. In conclusion, ODT helps reducing signal integrity issues.
Figure 6-1.
On-Die Termination
6.2
System I/O Lines
System I/O lines are pins used by oscillators, test mode, reset, flash erase and JTAG to name
but a few. Described below are the SAM3X/A system I/O lines shared with PIO lines.
These pins are software configurable as general purpose I/O or system pins. At startup, the
default function of these pins is always used.
PCB Trace
Z0 ~ 50 Ohms
Receiver
SAM3 Driver with
Rodt
Zout ~ 10 Ohms
Z0 ~ Zout + Rodt
ODT
36 Ohms Typ.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ATSAM3X4EA-CU | 功能描述:ARM微控制器 - MCU BGA144,GREEN, IND TEMP, MRL A 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 |
| ATSAM3X8CA-AU | 功能描述:ARM微控制器 - MCU QFP100,GREEN, IND TEMP, MRLA 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 |
| ATSAM3X8CA-CU | 功能描述:ARM微控制器 - MCU BGA100,GREEN, IND TEMP, MRLA 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 |
| ATSAM3X8EA-AU | 功能描述:ARM微控制器 - MCU LQFP144,GREEN, IND TEMP, MRLA 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 |
| ATSAM3X8EA-AU | 制造商:Atmel Corporation 功能描述:QFP144GREEN IND TEMP MRLA |
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