Moteur de recherche de fiches techniques de composants électroniques |
|
ST72324BJ Fiches technique(PDF) 39 Page - STMicroelectronics |
|
ST72324BJ Fiches technique(HTML) 39 Page - STMicroelectronics |
39 / 188 page ST72324B Interrupts 39/188 peripheral control register. The general sequence for clearing an interrupt is based on an access to the status register followed by a read or write to an associated register. Note: The clearing sequence resets the internal latch. A pending interrupt (that is, waiting to be serviced) is therefore lost if the clear sequence is executed. 7.3 Interrupts and low power modes All interrupts allow the processor to exit the Wait low power mode. On the contrary, only external and other specified interrupts allow the processor to exit from the Halt modes (see column Exit from HALT in Table 24: Interrupt mapping). When several pending interrupts are present while exiting Halt mode, the first one serviced can only be an interrupt with Exit from Halt mode capability and it is selected through the same decision process shown in Figure 19. Note: If an interrupt, that is not able to exit from Halt mode, is pending with the highest priority when exiting Halt mode, this interrupt is serviced after the first one serviced. 7.4 Concurrent and nested management Figure 20 and Figure 21 show two different interrupt management modes. The first is called concurrent mode and does not allow an interrupt to be interrupted, unlike the nested mode in Figure 21. The interrupt hardware priority is given in order from the lowest to the highest as follows: MAIN, IT4, IT3, IT2, IT1, IT0. Software priority is given for each interrupt. Warning: A stack overflow may occur without notifying the software of the failure. Figure 20. Concurrent interrupt management Main IT4 IT2 IT1 TRAP IT1 Main IT0 I1 Software 3 3 3 3 3 3/0 3 11 11 11 11 11 11/10 11 RIM IT3 I0 10 priority level |
Numéro de pièce similaire - ST72324BJ |
|
Description similaire - ST72324BJ |
|
|
Lien URL |
Politique de confidentialité |
ALLDATASHEET.FR |
ALLDATASHEET vous a-t-il été utile ? [ DONATE ] |
À propos de Alldatasheet | Publicité | Contactez-nous | Politique de confidentialité | Echange de liens | Fabricants 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 |