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| 型号： | ATSAM3U1CB-AU |
| 厂商： | Atmel |
| 文件页数： | 17/60页 |
| 文件大小： | 0K |
| 描述： | IC MCU 64KB CORTEX-M3 100-LQFP |
| 标准包装： | 90 |
| 系列： | SAM3U |
| 核心处理器： | ARM? Cortex?-M3 |
| 芯体尺寸： | 32-位 |
| 速度： | 96MHz |
| 连通性： | EBI/EMI，I²C，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： | 57 |
| 程序存储器容量： | 64KB（64K x 8） |
| 程序存储器类型： | 闪存 |
| RAM 容量： | 20K x 8 |
| 电压 - 电源 (Vcc/Vdd)： | 1.62 V ~ 1.95 V |
| 数据转换器： | A/D 4x10b，4x12b |
| 振荡器型： | 内部 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 100-LQFP |
| 包装： | 托盘 |
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24
6430FS–ATARM–10-Feb-12
SAM3U Series
6.
Input/Output Lines
The SAM3U 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 GPIO line can be used whether it is in IO mode or used by the multi-
plexed peripheral. System I/Os are pins such as test pin, oscillators, erase pin, analog inputs or
debug pins.
With a few exceptions, the I/Os have input schmitt triggers. Refer to the footnotes associated
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 SAM3U embeds high speed pads able to handle up to 65 MHz for HSMCI and SPI clock
lines and 35 MHz on other lines. See “AC Characteristics” of the product datasheet 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 I/Os 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 schematic
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.
6.3
Serial Wire JTAG Debug Port (SWJ-DP)
The SWJ-DP pins are TCK/SWCLK, TMS/SWDIO, TDO/SWO, TDI and commonly provided on
a standard 20-pin JTAG connector defined by ARM. For more details about voltage reference
and reset state, refer to Table 3-1, “Signal Description List”
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 |
|---|---|
| ATSAM3U1CB-CU | 功能描述:ARM微控制器 - MCU TFBGA, Grn, IT 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 |
| ATSAM3U1EA-AU | 功能描述:ARM微控制器 - MCU 64K Flash, 20K SRAM 32-bit ARM Cortex M3 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 |
| ATSAM3U1EA-CU | 功能描述:ARM微控制器 - MCU 64K Flash, 20K SRAM 32-bit ARM Cortex M3 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 |
| ATSAM3U1EB-AU | 功能描述:ARM微控制器 - MCU LQFP, Grn, IT, 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 |
| ATSAM3U1EB-CU | 功能描述:ARM微控制器 - MCU LFBGA, Grn, IT 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 |
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