ST72T331 STMICROELECTRONICS [STMicroelectronics], ST72T331 Datasheet - Page 22
ST72T331
Manufacturer Part Number
ST72T331
Description
8-BIT MCU WITH 8 TO 16K OTP/EPROM, 256 EEPROM, 384 TO 512 BYTES RAM, ADC, WDG, SCI, SPI AND 2 TIMERS
Manufacturer
STMICROELECTRONICS [STMicroelectronics]
Datasheet
1.ST72T331.pdf
(107 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ST72T331N2
Manufacturer:
ST
Quantity:
20 000
ST72E331 ST72T331
INTERRUPTS (Cont’d)
Figure 17. Interrupt Processing Flowchart
FROM RESET
N
I BIT SET?
N
Y
INTERRUPT
PENDING?
Y
FETCH NEXT INSTRUCTION
N
IRET?
STACK PC, X, A, CC
SET I BIT
Y
LOAD PC FROM INTERRUPT VECTOR
EXECUTE INSTRUCTION
RESTORE PC, X, A, CC FROM STACK
THIS CLEARS I BIT BY DEFAULT
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