ST72324LS4 STMicroelectronics, ST72324LS4 Datasheet - Page 30

• Manufacturer Part Number: ST72324LS4
• Description: 8-bit MCU
• Manufacturer: STMicroelectronics

Specifications of ST72324LS4

• Hdflash Endurance: 100 cycles, data retention
• Clock Sources: crystal/ceramic resonator oscillators, internal RC oscillator, and bypass for external clock
• Four Power Saving Modes: Halt, Active-Halt, Wait and Slow
• Main Clock Controller With: Real time base, Beep and Clock-out capabilities
• 16-bit Timer A With: 1 input capture, 1 output compare, external clock input, PWM and pulse generator modes
• 16-bit Timer B With: 2 input captures, 2 output compares, PWM and pulse generator modes

ST72324Lxx
INTERRUPTS (Cont’d)
Table 8. 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.
30/154
1
Instruction
HALT
IRET
JRM
JRNM
POP CC
RIM
SIM
TRAP
WFI
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
New Description
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
Function/Example
I1
I1
I1
1
1
1
1
1
H
H
H
I0
I0
I0
0
0
1
1
0
N
N
N
Z
Z
Z
C
C
C