ST7LITES2 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

ST7LITES2

8-BIT MICROCONTROLLER WITH SINGLE VOLTAGE FLASH MEMORY, DATA EEPROM, ADC, TIMERS, SPI

STMicroelectronics 

INTERRUPTS (Cont’d)

Figure 17. Interrupt Processing Flowchart

FROM RESET

N

I BIT SET?

Y

FETCH NEXT INSTRUCTION

ST7LITE0x, ST7LITESx

N

INTERRUPT

PENDING?

Y

N

EXECUTE INSTRUCTION

IRET?

Y

STACK PC, X, A, CC

SET I BIT

LOAD PC FROM INTERRUPT VECTOR

RESTORE PC, X, A, CC FROM STACK

THIS CLEARS I BIT BY DEFAULT

Table 6. Interrupt Mapping

N°

Source

Block

Description

RESET Reset

TRAP

Software Interrupt

0

Not used

1

ei0

External Interrupt 0

2

ei1

External Interrupt 1

3

ei2

External Interrupt 2

4

ei3

External Interrupt 3

5

Not used

6

Not used

7

SI

AVD interrupt

8

AT TIMER Output Compare Interrupt

AT TIMER

9

AT TIMER Overflow Interrupt

10

LITE TIMER Input Capture Interrupt

LITE TIMER

11

LITE TIMER RTC Interrupt

12

SPI

SPI Peripheral Interrupts

13

Not used

Register

Label

Priority

Order

Highest

Priority

Exit

from

HALT

yes

no

N/A

yes

SICSR

no

PWM0CSR

no

ATCSR

yes

LTCSR

no

LTCSR

yes

SPICSR Lowest yes

Priority

Address

Vector

FFFEh-FFFFh

FFFCh-FFFDh

FFFAh-FFFBh

FFF8h-FFF9h

FFF6h-FFF7h

FFF4h-FFF5h

FFF2h-FFF3h

FFF0h-FFF1h

FFEEh-FFEFh

FFECh-FFEDh

FFEAh-FFEBh

FFE8h-FFE9h

FFE6h-FFE7h

FFE4h-FFE5h

FFE2h-FFE3h

FFE0h-FFE1h

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