参数资料
| 型号： | DO-CPLD-DK-J-G |
| 厂商： | Xilinx Inc |
| 文件页数： | 19/24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
Figure 5:
Power, Sequencing, and Slew Rates
UG445_04_052207
V CCINT is powered before V CCIO
For best results (with multiple power rails), Xilinx recommends that V CCINT be applied
before V CCIO (see Figure 5 ); this ensures that the internal logic is correct before the I/Os are
active. If V CCIO is powered before V CCINT , this does not damage the device, but there
might be glitches on the I/O as the internal circuitry is initialized. Xilinx recommends not
leaving V CCIO floating while V CCINT is ramping.
During power-up, all Xilinx CPLDs employ internal circuitry which keeps the devices in
the quiescent state (weak pull-up) until the V CCINT supply voltage is at a safe level.
The approximate “safe level” for each device is listed below:
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CoolRunner-II: 1.3V
CoolRunner XPLA3: 2.1V
XC9500XL: 2.5V
XC9500XV: 1.9V
XC9500: 3.8V
V CCIO can be removed without damaging the part, but the exact behavior under these
conditions is not characterized, and therefore, not recommended. When power is removed
from V CCIO with the core powered, the I/Os still try to drive and read their pins.
Transistors are in an unknown state, which results in more current than if the I/Os were
disabled or held in a known state.
V CCIO is not required for programming of the non-volatile memory of a CoolRunner-II.
However, it is strongly recommended to power V CCIO during programming. For the
XC9500, XC9500XL, XC9500XV, and CoolRunner XPLA3 devices, V CCIO is required for
configuration and programming.
V CCAUX is used to power the JTAG circuitry. This leads to a common question, can V CCAUX
be safely removed after configuration. This is not recommend. V CCAUX should be powered
even after configuration. If there are no JTAG instructions, the power consumed on
CPLD I/O User Guide
UG445 (v1.2) January 14, 2014
19
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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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