Stop Mode Versus Real-Time Mode - Texas Instruments TMS320C28x Reference Manual

Execution Control Modes
Figure 7−4. Stop Mode Versus Real-Time Mode
Single-instruction state
Cannot observe CPU
Can service an interrupt
if RUN 1 used
After executing
one instruction
Stop mode
Real-time mode
Debugger command
Single-instruction state
Cannot observe CPU
Can service an interrupt
if RUN 1 used
†
If you use a RUN 1 debugger command to execute a single instruction, an interrupt can be serviced in the single-instruction state.
If you use a STEP 1 debugger command for the same purpose, an interrupt cannot be serviced.
7-12
†
Debugger command
Debug-halt state
Can observe CPU
Cannot service interrupts
Debugger command
Debug-halt state
Can observe CPU
Can service time-critical interrupts
(including NMI and RS)
After executing
one instruction
†
Debugger command
Debugger command
Debugger command,
breakpoint, or analysis stop
Debugger command
Run state
Cannot observe CPU
Can service interrupts
Debugger command,
breakpoint, or analysis stop
Run state
Can observe CPU
Can service interrupts