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| 型号： | AT91SAM9260-EK |
| 厂商： | Atmel |
| 文件页数： | 5/45页 |
| 文件大小： | 0K |
| 描述： | KIT EVAL FOR AT91SAM9260 |
| 产品培训模块： | MCU Product Line Introduction |
| 标准包装： | 1 |
| 系列： | AT91SAM 智能 ARM |
| 类型： | MCU |
| 适用于相关产品： | AT91SAM9260 |
| 所含物品： | 评估板、并行缆线和光盘 |
| 相关产品： | AT91SAM9260B-CU-999-ND - IC MCU ARM9 217LFBGA AT91SAM9260B-QU-ND - IC ARM9 MCU 208-PQFP AT91SAM9260B-CU-ND - IC ARM9 MCU 217-LFBGA |
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13
SAM9260 [SUMMARY]
6221LS–ATARM–15-Oct-12
6.
I/O Line Considerations
6.1
JTAG Port Pins
TMS, TDI and TCK are Schmitt trigger inputs and have no pull-up resistors.
TDO and RTCK are outputs, driven at up to VDDIOP0, and have no pull-up resistors.
The JTAGSEL pin is used to select the JTAG boundary scan when asserted at a high level (tied to VDDBU). It integrates
a permanent pull-down resistor of about 15 k
Ω to GNDBU, so that it can be left unconnected for normal operations.
The NTRST signal is described in Section 6.3.
All the JTAG signals are supplied with VDDIOP0.
6.2
Test Pin
The TST pin is used for manufacturing test purposes when asserted high. It integrates a permanent pull-down resistor of
about 15 k
Ω to GNDBU, so that it can be left unconnected for normal operations. Driving this line at a high level leads to
unpredictable results.
This pin is supplied with VDDBU.
6.3
Reset Pins
NRST is a bidirectional with an open-drain output integrating a non-programmable pull-up resistor. It can be driven with
voltage at up to VDDIOP0.
NTRST is an input which allows reset of the JTAG Test Access port. It has no action on the processor.
As the product integrates power-on reset cells, which manages the processor and the JTAG reset, the NRST and
NTRST pins can be left unconnected.
The NRST and NTRST pins both integrate a permanent pull-up resistor to VDDIOP0. Its value can be found in the table
“DC Characteristics” in the section “SAM9260 Electrical Characteristics” in the product datasheet.
The NRST signal is inserted in the Boundary Scan.
6.4
PIO Controllers
All the I/O lines managed by the PIO Controllers integrate a programmable pull-up resistor. Refer to the section on DC
Characteristics in “SAM9260 Electrical Characteristics” for more information. Programming of this pull-up resistor is
performed independently for each I/O line through the PIO Controllers.
After reset, all the I/O lines default as inputs with pull-up resistors enabled, except those which are multiplexed with the
External Bus Interface signals and that must be enabled as Peripheral at reset. This is explicitly indicated in the column
“Reset State” of the PIO Controller multiplexing tables.
6.5
I/O Line Drive Levels
The PIO lines are high-drive current capable. Each of these I/O lines can drive up to 16 mA permanently except PC4 to
PC31 that are VDDIOM powered.
6.6
Shutdown Logic Pins
The SHDN pin is a tri-state output pin, which is driven by the Shutdown Controller. There is no internal pull-up. An
external pull-up tied to VDDBU is needed and its value must be higher than 1 M
Ω. The resistor value is calculated
according to the regulator enable implementation and the SHDN level.
The pin WKUP is an input-only. It can accept voltages only between 0V and VDDBU.
相关PDF资料 |
PDF描述 |
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| 1331-271K | INDUCTOR SHIELDED 0.27UH SMD |
| 1331-222K | INDUCTOR SHIELDED 2.20UH SMD |
| 1331-221K | INDUCTOR SHIELDED 0.22UH SMD |
| 1331-182K | INDUCTOR SHIELDED 1.80UH SMD |
| 1331-181K | INDUCTOR SHIELDED 0.18UH SMD |
相关代理商/技术参数 |
参数描述 |
|---|---|
| AT91SAM9260-QU | 功能描述:ARM微控制器 - MCU 2x4kB SRAM 180MHz - PWM 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 |
| AT91SAM9261 | 制造商:Atmel Corporation 功能描述:ARM9 PROCESSOR W/LCD CONTROLLER - Bulk |
| AT91SAM9261_08 | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:AT91 ARM Thumb-based Microcontrollers |
| AT91SAM9261_09 | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:AT91 ARM Thumb-based Microcontrollers |
| AT91SAM9261_0903 | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:AT91 ARM Thumb-based Microcontrollers |
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