 |
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 |
|
ST7LITEUS2 数据表(PDF) 51 Page - STMicroelectronics |
|
|
|||||||||||||||||||||||||||||
ST7LITEUS2 数据表(HTML) 51 Page - STMicroelectronics |
|
|
51 / 136 page  Obsolete Product(s) - Obsolete Product(s) Obsolete Product(s) - Obsolete Product(s) ST7LITEUS2, ST7LITEUS5 Power saving modes 51/136 8.4.1 Active-halt mode Active-halt mode is the lowest power consumption mode of the MCU with a real time clock available. It is entered by executing the ‘HALT’ instruction when Active-halt mode is enabled. The MCU can exit Active-halt mode on reception of a Lite Timer / AT Timer interrupt or a reset. ● When exiting Active-halt mode by means of a reset, a 64 CPU cycle delay occurs. After the start up delay, the CPU resumes operation by fetching the reset vector which woke it up (see Figure 22). ● When exiting Active-halt mode by means of an interrupt, the CPU immediately resumes operation by servicing the interrupt vector which woke it up (see Figure 22). When entering Active-halt mode, the I bit in the CC register is cleared to enable interrupts. Therefore, if an interrupt is pending, the MCU wakes up immediately. In Active-halt mode, only the main oscillator and the selected timer counter (LT/AT) are running to keep a wakeup time base. All other peripherals are not clocked except those which get their clock supply from another clock generator (such as external or auxiliary oscillator). Caution: As soon as Active-halt is enabled, executing a HALT instruction while the watchdog is active does not generate a reset if the WDGHALT bit is reset. This means that the device cannot spend more than a defined delay in this power saving mode. Figure 21. Active-halt timing overview halt Run Run 64 CPU CYCLE DELAY 1) RESET OR INTERRUPT HALT INSTRUCTION FETCH VECTOR Active [Active-halt Enabled] Obsolete Product(s) - Obsolete Product(s) |
|
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
