 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
ST72325 Datasheet(PDF) 38 Page - STMicroelectronics |
|
|
|||||||||||||||||||||||||||||
ST72325 Datasheet(HTML) 38 Page - STMicroelectronics |
|
|
38 / 196 page  38/196 INTERRUPTS (Cont’d) 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 “Interrupt Mapping” table). When several pending interrupts are present while exit- ing 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 proc- ess shown in Figure 22. 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 & NESTED MANAGEMENT The following Figure 23 and Figure 24 show two different interrupt management modes. The first is called concurrent mode and does not allow an in- terrupt to be interrupted, unlike the nested mode in Figure 24. The interrupt hardware priority is given in this order from the lowest to the highest: MAIN, IT4, IT3, IT2, IT1, IT0, TLI. The software priority is given for each interrupt. Warning: A stack overflow may occur without no- tifying the software of the failure. Figure 23. Concurrent Interrupt Management Figure 24. Nested 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 MAIN IT2 TRAP MAIN IT0 3 2 1 3 3 3/0 3 11 00 01 11 11 11 RIM IT1 IT4 IT4 IT1 IT2 IT3 I1 I0 11 / 10 10 SOFTWARE PRIORITY LEVEL |
Similar Part No. - ST72325_07 |
|
Similar Description - ST72325_07 |
|
|
Link URL |
| Privacy Policy |
| ALLDATASHEET.COM |
| Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link Exchange | Manufacturer List 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 |
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
