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ST7263B 数据表(PDF) 21 Page - STMicroelectronics |
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ST7263B 数据表(HTML) 21 Page - STMicroelectronics |
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21 / 132 page  ST7263B 21/132 INTERRUPTS (Cont’d) Figure 16. Interrupt Processing Flowchart Table 7. Interrupt Mapping BIT I SET Y N IRET Y N FROM RESET LOAD PC FROM INTERRUPT VECTOR STACK PC, X, A, CC SET I BIT FETCH NEXT INSTRUCTION EXECUTE INSTRUCTION THIS CLEARS I BIT BY DEFAULT RESTORE PC, X, A, CC FROM STACK INTERRUPT Y N N° Source Block Description Register Label Priority Order Exit from HALT Vector Address RESET Reset N/A Highest Priority Lowest Priority yes FFFEh-FFFFh TRAP Software Interrupt no FFFCh-FFFDh FLASH Flash Start Programming Interrupt yes FFFAh-FFFBh USB End Suspend Mode ISTR yes FFF8h-FFF9h 1 ITi External Interrupts ITRFRE FFF6h-FFF7h 2 TIMER Timer Peripheral Interrupts TIMSR no FFF4h-FFF5h 3 I²C I²C Peripheral Interrupts I²CSR1 FFF2h-FFF3h I²CSR2 4 SCI SCI Peripheral Interrupts SCISR FFF0h-FFF1h 5 USB USB Peripheral Interrupts ISTR FFEEh-FFEFh |
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