ST72324BLJ2B5 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

ST72324BLJ2B5

3V range 8-bit MCU with 8 to 32K Flash/ROM, 10-bit ADC, 4 timers, SPI, SCI interface

STMicroelectronics 

ST72324Lxx

INTERRUPTS (Cont’d)

Table 8. Dedicated Interrupt Instruction Set

Instruction

HALT

IRET

JRM

JRNM

POP CC

RIM

SIM

TRAP

WFI

New Description

Entering Halt mode

Interrupt routine return

Jump if I1:0=11 (level 3)

Jump if I1:0<>11

Pop CC from the Stack

Enable interrupt (level 0 set)

Disable interrupt (level 3 set)

Software trap

Wait for interrupt

Function/Example

Pop CC, A, X, PC

I1:0=11 ?

I1:0<>11 ?

Mem => CC

Load 10 in I1:0 of CC

Load 11 in I1:0 of CC

Software NMI

I1 H I0 N Z C

1

0

I1 H I0 N Z C

I1 H I0 N Z C

1

0

1

1

1

1

1

0

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.

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