ST72611F1M1 データシートの表示（PDF） - STMicroelectronics

部品番号

コンポーネント説明

メーカー

ST72611F1M1

LOW SPEED USB 8-BIT MCU WITH 3 ENDPOINTS, FLASH MEMORY, LVD, WDG, TIMER

STMicroelectronics 

ST7261

INTERRUPTS (Cont’d)

Figure 18. Interrupt Processing Flowchart

FROM RESET

N

I BIT SET?

Y

FETCH NEXT INSTR UCTION

N

INTE RRUPT

PENDING ?

Y

N

EXECU TE INSTRUCTION

IRET?

Y

STACK PC, X, A, CC

SET I BIT

LOAD PC FROM INTERRUPT VECTO R

RESTORE PC, X, A, CC FROM STACK

THIS CLEARS I BIT BY DEFAULT

Table 5. Interrupt Mapping

N°

Source

Block

Description

Reset Vector

TRAP software interrupt vector

0

ICP

FLASH Start programming NMI interrupt

vector

1

USB

USB End Suspend interrupt vector

2

Port A external interrupts IT[3:1]

I/O Ports

3

Port B external interrupts IT[8:5]

4

NOT USED

5

TBU

Timebase Unit interrupt vector

6

NOT USED

7

NOT USED

8

NOT USED

9

USB

USB interrupt vector

10

NOT USED

Register

Label

Exit

from

HALT

Yes

No

Yes

Address

Vector

Priority

Order

FFFEh-FFFFh

FFFCh-FFFDh

FFFAh -FFFB h

Highest

Priority

USBISTR Yes FFF8h-FFF9h

Yes

ITRFRE1

Yes

FFF6h-FFF7h

FFF4h-FFF5h

FFF2h-FFF3h

TBUCSR No FFF0h-FFF1h

F FEEh-FFE Fh

FFECh-FFEDh

F FEAh -FFEB h

Lowest

USBISTR No FFE8h-FFE9h Priority

FFE6h-FFE7h

21/71

Share Link: