 |
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 |
|
STA680 数据表(PDF) 27 Page - STMicroelectronics |
|
|
|||||||||||||||||||||||||||||
STA680 数据表(HTML) 27 Page - STMicroelectronics |
|
|
27 / 48 page  DS5877 Rev 13 27/48 STA680 Power supply ramp-up phase 47 Once the source of the secondary boot code has been identified, the STA680 executes the following steps: 1. code authentication 2. SDRAM initialization 3. secondary boot code download to SDRAM. In order to decrease the boot time during the secondary phase, the STA680 performs the setup of the PLLs and sets the internal clock frequency to 28.224 MHz (see Figure 7). Subsequently it downloads and validates the application code either from the external Flash memory or from the host microcontroller. This ends the boot procedure. 4.3 Normal operation mode After the execution of the boot code, the device enters the normal operation mode by jumping to the main program loop. |
|
链接网址 |
| 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 | 数据表链接 | 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
