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ST72104G Datasheet(PDF) 26 Page - STMicroelectronics

No. de pieza ST72104G
Descripción Electrónicos  8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY, ADC, 16-BIT TIMERS, SPI, I2C INTERFACES
PDF  135 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST72104G Datasheet(HTML) 26 Page - STMicroelectronics

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ST72104G, ST72215G, ST72216G, ST72254G
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INTERRUPTS (Cont’d)
Figure 15. Interrupt Processing Flowchart
Table 5. Interrupt Mapping
Note
1. Configurable by option byte.
N
°
Source
Block
Description
Register
Label
Priority
Order
Exit
from
HALT
Address
Vector
RESET
Reset
N/A
Highest
Priority
Lowest
Priority
yes
FFFE h-FFFFh
TRAP
Software Interrupt
no
FFFCh-FFFDh
0
ei0
External Interrupt Port A7..0 (C5..01)
yes
FFFA h-FFFBh
1
ei1
External Interrupt Port B7..0 (C5..01)
FFF8h-FFF9h
2
CSS
Clock Filter Interrupt
CRSR
no
FFF6h-FFF7h
3
SPI
SPI Peripheral Interrupts
SPISR
FFF4h-FFF5h
4
TIMER A
TIMER A Peripheral Interrupts
TASR
FFF2h-FFF3h
5
Not used
FFF0h-FFF1h
6
TIMER B
TIMER B Peripheral Interrupts
TBSR
no
FFEEh-FFE Fh
7
Not used
FFECh-FFE Dh
8
Not used
FFEAh-FFEBh
9
Not used
FFE8h-FFE 9h
10
Not used
FFE6h-FFE 7h
11
I C
I C Peripheral Interrupt
I2CSRx
no
FFE4h-FFE 5h
12
Not Used
FFE2h-FFE 3h
13
Not Used
FFE0h-FFE 1h
I BIT SET?
Y
N
IRET?
Y
N
FROM RESET
LOAD PC FROM INTERRUPT VECTO R
STACK PC, X, A, CC
SET I BIT
FETCH NEXT INSTR UCTION
EXECU TE INSTRUCTION
THIS CLEARS I BIT BY DEFAULT
RESTORE PC, X, A, CC FROM STACK
INTE RRUPT
Y
N
PENDING ?



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