ST72T311 ST Microelectronics, ST72T311 Datasheet - Page 21

• Manufacturer Part Number: ST72T311
• Description: 8-BIT MCU WITH 8 TO 16K OTP/EPROM
• Manufacturer: ST Microelectronics

ST72E311 ST72T311
INTERRUPTS (Cont’d)
Figure 17. Interrupt Processing Flowchart
FROM RESET
N
BIT I SET
N
Y
BIT I SET
Y
FETCH NEXT INSTR UCTION
N
IRET
STACK PC, X, A, CC
SET I BIT
Y
LOAD PC FROM INTERRUPT VECTO R
EXECU TE INSTRUCTION
RESTORE PC, X, A, CC FROM STACK
THIS CLEARS I BIT BY DEFAULT
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