SPRUIZ1B July 2023 – August 2024 TMS320F28P650DH , TMS320F28P650DK , TMS320F28P650SH , TMS320F28P650SK , TMS320F28P659DH-Q1 , TMS320F28P659DK-Q1 , TMS320F28P659SH-Q1
In IDLE mode, the watchdog interrupt (WDINT) signal can generate an interrupt to the CPU to take the CPU out of IDLE mode. As with any other peripheral, the watchdog interrupt triggers a WAKEINT interrupt in the PIE during IDLE mode. User software must determine which peripheral caused the interrupt.
In STANDBY mode, all of the clocks to the peripherals are turned off within the CPU subsystem. The only peripheral that remains functional is the watchdog since the watchdog module runs off the oscillator clock (OSCCLK). The WDINT signal is applied to the Low Power Modes (LPM) block so that the LPM block can be used to wake the CPU from STANDBY low-power mode. This feature is enabled by setting LPMCR.WDINTE = 1. See Section 3.11 for details.