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ST72321 Datenblatt(PDF) 36 Page - STMicroelectronics

Teilenummer ST72321
Bauteilbeschribung  8-BIT MCU WITH NESTED INTERRUPTS, FLASH, 10-BIT ADC, FIVE TIMERS, SPI, SCI, I2C INTERFACE
PDF  185 Pages
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Hersteller  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
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ST72321 Datenblatt(HTML) 36 Page - STMicroelectronics

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INTERRUPTS (Cont’d)
Table 6. Dedicated Interrupt Instruction Set
Note: During the execution of an interrupt routine, the HALT, POPCC, RIM, SIM and WFI instructions change the current
software priority up to the next IRET instruction or one of the previously mentioned instructions.
Instruction
New Description
Function/Example
I1
H
I0
N
Z
C
HALT
Entering Halt mode
1
0
IRET
Interrupt routine return
Pop CC, A, X, PC
I1
H
I0
N
Z
C
JRM
Jump if I1:0=11 (level 3)
I1:0=11 ?
JRNM
Jump if I1:0<>11
I1:0<>11 ?
POP CC
Pop CC from the Stack
Mem => CC
I1
H
I0
N
Z
C
RIM
Enable interrupt (level 0 set)
Load 10 in I1:0 of CC
1
0
SIM
Disable interrupt (level 3 set)
Load 11 in I1:0 of CC
1
1
TRAP
Software trap
Software NMI
1
1
WFI
Wait for interrupt
1
0



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