参数资料
| 型号： | DO-CPLD-DK-J-G |
| 厂商： | Xilinx Inc |
| 文件页数： | 23/24页 |
| 文件大小： | 0K |
| 描述： | KIT STARTER CPLD JAPANESE |
| 标准包装： | 1 |
| 系列： | CoolRunner™- II |
| 类型： | CPLD 开发套件 |
| 适用于相关产品： | CoolRunner-ll，XC9500XL |
| 所含物品： | 原型板，下载缆线，软件和文档 |
R
Power, Sequencing, and Slew Rates
In Figure 8 are two waveforms of a signal with and without the Schmitt Trigger, it is the
noise from the outputs that make the non-Schmitt Trigger input appear jagged.
Non- S chmitt W a veform s
S chmitt W a veform s
UG445_07_052207
Figure 8:
Before and After Schmitt Trigger Waveforms
When the input is higher than a certain chosen threshold, the output is high; when the
input is below another (lower) threshold, the output is low; when the input is between the
two, the output retains its value. Thus, the output retains its value until the input changes
sufficiently to trigger a change. This dual-threshold action is called “hysteresis”.
The hysteresis for the CoolRunner-II Schmitt trigger is reported in the data sheet. One
point to note is that the Vt+ min and Vt- max are equal. However, this combination does
not happen together as the Vt levels track each other. When looking at the Vt max of one
characteristic, you must look at the Vt max of the other.
For more information on the CoolRunner-II Schmitt trigger, see the CoolRunner-II I/O
Characteristics Application Note ( XAPP382 ).
Slew Rate
The slew rate for outputs can be selected as either fast or slow. A slow slew rate is a delayed
version of the fast slew rate. The change in the slew rate is achieved by delaying the fast
slew rate output.
CPLD I/O User Guide
UG445 (v1.2) January 14, 2014
23
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| DP1RD20JQ1R400 | CONN RCPT 20POS R/A TOP MT GOLD |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DO-CSP-PRO-52 | 制造商:Xilinx 功能描述:TIME BASED LICENSE DEVT OPT EOL260308 |
| DO-CSP-PRO-USB-G | 功能描述:KIT CHIPSCOPE PRO W/USB II RoHS:是 类别:测试设备 >> 示波器 系列:ChipScope™ Pro 标准包装:1 系列:2542 类型:工作台 - 数字 带宽:100MHz 通道:2 显示器类型:LCD - 彩色 接口:LAN，RS232，USB 存储容量:16kpts 功能:记录、回放、保存、趋势 探头类型:无源 10:1（2） 采样率（每秒）:1G 输入阻抗:1M - 18pF 上升时间（标准值）:3.5ns 电压 - 输入（最大）:CAT I 400V 电源电压:100 ~ 240VAC 包括:电线，手册，探头，USB 电缆 其它名称:BK2542B |
| DO-CSP-PRO-USB-II-G-FL | 功能描述:CHIPSCOPE PRO WITH USB-II CABLE RoHS:是 类别:编程器，开发系统 >> 软件 系列:ChipScope™ Pro 标准包装:1 系列:ISE® 设计套件 类型:订阅 适用于相关产品:Xilinx FPGAs 其它名称:Q4986209T1081384 |
| DO-CSP-PRO-USB-II-G-NL | 功能描述:CHIPSCOPE PRO WITH USB-II CABLE RoHS:是 类别:编程器，开发系统 >> 软件 系列:ChipScope™ Pro 标准包装:1 系列:ISE® 设计套件 类型:订阅 适用于相关产品:Xilinx FPGAs 其它名称:Q4986209T1081384 |
| DOC-ST7-EMU3/DS | 制造商:未知厂家 制造商全称:未知厂家 功能描述:ST7-EMU3 EMULATOR FOR ST7XXXX DEVICES |
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