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| 型号： | ATSAM3SD8BA-MU |
| 厂商： | Atmel |
| 文件页数： | 14/57页 |
| 文件大小： | 0K |
| 描述： | IC MCU 2X256KB CORTEX-M3 64-QFN |
| 标准包装： | 260 |
| 系列： | SAM3S |
| 核心处理器： | ARM? Cortex?-M3 |
| 芯体尺寸： | 32-位 |
| 速度： | 64MHz |
| 连通性： | I²C，IrDA，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： | 47 |
| 程序存储器容量： | 512KB（512K x 8） |
| 程序存储器类型： | 闪存 |
| RAM 容量： | 64K x 8 |
| 电压 - 电源 (Vcc/Vdd)： | 1.62 V ~ 1.95 V |
| 数据转换器： | A/D 11x12b，D/A 2x12b |
| 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 |
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21
11090BS–ATARM–22-Oct-13
SAM3S8/SD8 Summary
6.
Input/Output Lines
The SAM3S8/SD8 has several kinds of input/output (I/O) lines such as general purpose I/Os
(GPIO) and system I/Os. GPIOs can have alternate functionality due to multiplexing capabilities
of the PIO controllers. The same PIO line can be used whether in I/O mode or by the multiplexed
peripheral. System I/Os include pins such as test pins, oscillators, erase or analog inputs.
6.1
General Purpose I/O Lines
GPIO Lines are managed by PIO Controllers. All I/Os have several input or output modes such
as pull-up or pull-down, 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 product “PIO Control-
ler” section.
The input/output buffers of the PIO lines are supplied through VDDIO power supply rail.
The SAM3S8/SD8 embeds high speed pads able to handle up to 32 MHz for HSMCI (MCK/2),
45 MHz for SPI clock lines and 35 MHz on other lines. See AC Characteristics Section of the
datasheet for more details. Typical pull-up and pull-down 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). It consists of
an internal series resistor termination scheme for impedance matching between the driver out-
put (SAM3S8/SD8) and the PCB trace 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 diminish 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 and JTAG to name but a few.
Described below in Table 6-1are the SAM3S8/SD8 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 |
|---|---|
| ATSAM3SD8BA-MUR | 制造商:Atmel Corporation 功能描述:QFN,GREEN,IND TEMP,MRL A,T&R 制造商:Atmel Corporation 功能描述:QFN,GREEN,IND TEMP,MRL A,T&R - Tape and Reel 制造商:Atmel Corporation 功能描述:IC MCU 32BIT FLASH 64QFN 制造商:Atmel Corporation 功能描述:QFN,Green,IND TEMP,MRL A |
| ATSAM3SD8CA-AU | 功能描述:ARM微控制器 - MCU LQFP,Grn, IT, 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 |
| ATSAM3SD8CA-AUR | 制造商:Atmel Corporation 功能描述:LQFP,GREEN,IND TEMP,MRL A,T&R 制造商:Atmel Corporation 功能描述:LQFP,GREEN,IND TEMP,MRL A,T&R - Tape and Reel 制造商:Atmel Corporation 功能描述:IC MCU 32BIT 512KB FLASH 100LQFP 制造商:Atmel Corporation 功能描述:LQFP,Green,IND TEMP,MRL A |
| ATSAM3SD8CA-CU | 功能描述:ARM微控制器 - MCU BGA,Grn, IT, 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 |
| ATSAM3SD8CA-CUR | 制造商:Atmel Corporation 功能描述:BGA,GREEN, IND TEMP, MRL A,T&R 制造商:Atmel Corporation 功能描述:BGA,GREEN, IND TEMP, MRL A,T&R - Tape and Reel 制造商:Atmel Corporation 功能描述:IC MCU 32BIT FLASH 100BGA 制造商:Atmel Corporation 功能描述:BGAGreen,IND TEMP,MRL A |
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