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CSTS0400MGA06 Datasheet(PDF) 34 Page - STMicroelectronics

No. de pieza CSTS0400MGA06
Descripción Electrónicos  8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY, ADC, 16-BIT TIMERS, SPI, SCI INTERFACES
PDF  153 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

CSTS0400MGA06 Datasheet(HTML) 34 Page - STMicroelectronics

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INTERRUPTS (Cont’d)
Figure 18. Interrupt Processing Flowchart
Table 5. Interrupt mapping
Note 1. Valid for HALT and ACTIVE-HALT modes except for the MCC/RTC or CSS interrupt source which exits from
ACTIVE-HALT mode only.
N°
Source
Block
Description
Register
Label
Priority
Order
Exit
from
HALT1)
Address
Vector
RESET
Reset
N/A
Highest
Priority
Lowest
Priority
yes
FFFEh-FFFFh
TRAP
Software Interrupt
no
FFFCh-FFFDh
0
Not used
FFFAh-FFFBh
1
MCC/RTC
CSS
Main Clock Controller Time Base Interrupt
or Clock Security System Interrupt
MCCSR
CRSR
yes
FFF8h-FFF9h
2
ei0
External Interrupt Port A3..0
N/A
FFF6h-FFF7h
3
ei1
External Interrupt Port F2..0
FFF4h-FFF5h
4
ei2
External Interrupt Port B3..0
FFF2h-FFF3h
5
ei3
External Interrupt Port B7..4
FFF0h-FFF1h
6
Not used
FFEEh-FFEFh
7
SPI
SPI Peripheral Interrupts
SPISR
no
FFECh-FFEDh
8
TIMER A
TIMER A Peripheral Interrupts
TASR
FFEAh-FFEBh
9
TIMER B
TIMER B Peripheral Interrupts
TBSR
FFE8h-FFE9h
10
SCI
SCI Peripheral Interrupts
SCISR
FFE6h-FFE7h
11
Data-EEPROM Data EEPROM Interrupt
EECSR
FFE4h-FFE5h
12
Not used
FFE2h-FFE3h
13
FFE0h-FFE1h
I BIT SET?
Y
N
IRET?
Y
N
FROM RESET
LOAD PC FROM INTERRUPT VECTOR
STACK PC, X, A, CC
SET I BIT
FETCH NEXT INSTRUCTION
EXECUTE INSTRUCTION
THIS CLEARS I BIT BY DEFAULT
RESTORE PC, X, A, CC FROM STACK
INTERRUPT
Y
N
PENDING?



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