 |
поискавой системы для электроныых деталей |
|
|
поискавой системы для электроныых деталей |
|
L9908 датащи(PDF) 131 Page - STMicroelectronics |
|
|
|||||||||||||||||||||||||||||
L9908 датащи(HTML) 131 Page - STMicroelectronics |
|
|
131 / 153 page  Figure 85. Watchdog Timer simplified block diagram Watchdog timer function can be enabled by the SPI signal WDT_EN in the register GEN_CFG1: Table 144. Watchdog enable bit WDT_EN Description 0 Watchdog disabled (Default) 1 Watchdog enabled Once enabled, WDT_EN can be reset to disable only by INT_RST = 0 or CFG_RST = 0. Activation status of WDT is also stored in the SPI read only register WD_ON_STATUS: WD_ON_STATUS = 0 WDT is not active, WD_ON_STATUS = 1 WDT is active. As soon as the watchdog is enabled the overflow counter is started thus defining the available refresh window Twdt_ovf which length is defined by the SPI register WDT_OVF_CFG. Table 145. Watchdog configuration table for WDT overflow timer WDT_OVF_CFG1 WDT_OVF_CFG0 Description 0 0 11.26 ms 0 1 22.52 ms (Default) 1 0 45.04 ms 1 1 90.11 ms The WDT overflow counter status can be accessed through the dedicated SPI read only register WDT_OVF_STATUS. The counter value in seconds can be retrieved by the following reconstruction formula: TWTD_OVF−STATUS=ΔWTD_OVF_LSB×DWTD_OVF_STATUS (27) Where: DWDT_OVF is the digital word stored in WDT_OVF_STATUS and ∆WDT_OVF_LSB is the counter LSB as defined in Table 146. Table 146. WDT overflow timer LSB WDT_OVF_CFG Description 00 0.2048 ms 01 0.4096 ms (Default) 10 0.8192 ms L9908 Window Watchdog Timer (WTD) DS13546 - Rev 3 page 131/153 |
|
ссылки URL |
| Вашему бизинису помогли Аллдатащит? [ DONATE ] |
Что такое Аллдатащит | реклама | контакт | Конфиденциальность | Ссылка на техническое описание | обмен ссыками | поиск по производителю 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 |
Russian ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
