 |
数据搜索系统，热门电子元器件搜索 |
|
|
数据搜索系统，热门电子元器件搜索 |
|
EP2C35A5Q324I6N 数据表(PDF) 86 Page - Altera Corporation |
|
||||||||||||||||||||||||||||||
EP2C35A5Q324I6N 数据表(HTML) 86 Page - Altera Corporation |
|
|
86 / 168 page  4–4 Altera Corporation Cyclone II Device Handbook, Volume 1 February 2007 Hot-Socketing Feature Implementation in Cyclone II Devices Figure 4–1. Hot-Socketing Circuit Block Diagram for Cyclone II Devices The POR circuit monitors VCCINT voltage level and keeps I/O pins tri-stated until the device is in user mode. The weak pull-up resistor (R) from the I/O pin to VCCIO keeps the I/O pins from floating. The voltage tolerance control circuit permits the I/O pins to be driven by 3.3 V before VCCIO and/or VCCINT are powered, and it prevents the I/O pins from driving out when the device is not in user mode. f For more information, see the DC Characteristics & Timing Specifications chapter in Volume 1 of the Cyclone II Device Handbook for the value of the internal weak pull-up resistors. Figure 4–2 shows a transistor level cross section of the Cyclone II device I/O buffers. This design ensures that the output buffers do not drive when VCCIO is powered before VCCINT or if the I/O pad voltage is higher than VCCIO. This also applies for sudden voltage spikes during hot socketing. The VPAD leakage current charges the voltage tolerance control circuit capacitance. Output Enable Output Hot Socket Output Pre-Driver Voltage Tolerance Control Power-On Reset Monitor Weak Pull-Up Resistor PAD Input Buffer to Logic Array R |
类似零件编号 - EP2C35A5Q324I6N |
|
类似说明 - EP2C35A5Q324I6N |
|
|
链接网址 |
| 隐私政策 |
| ALLDATASHEETCN.COM |
| ALLDATASHEET是否为您带来帮助? [ DONATE ] |
关于 Alldatasheet | 广告服务 | 联系我们 | 隐私政策 | 链接交换 | 制造商名单 All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |
Chinese ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
