13.10.5 Interrupt Interaction
The INTM bit controls the scanner’s response to interrupts depending on which mode the NVM scanner is in, as described in the following table.
| INTM | MODE[1:0] | ||
|---|---|---|---|
| MODE == Burst | MODE == CONCURENT or TRIGGERED | MODE == PEEK | |
1 |
Interrupt overrides SCANGO (to zero) to pause the burst and the interrupt handler executes at full speed; Scanner Burst resumes when interrupt completes. | Scanner
suspended during interrupt response (SCANGO = 0); interrupt
executes at full speed and scan resumes when the interrupt is complete. |
This bit is ignored |
0 |
Interrupts do not override SCANGO, and the scan (burst) operation will continue; interrupt response will be delayed until scan completes (latency will be increased). | Scanner accesses NVM during interrupt response. | This bit is ignored |
In general, if INTM = 0, the scanner will take precedence over the interrupt, resulting in decreased interrupt processing speed and/or increased interrupt response latency. If INTM = 1, the interrupt will take precedence and have a better speed, delaying the memory scan.