5.5 DEEP SLEEP MODE

The ATA6847 has the lowest current consumption in Deep Sleep mode. All functional blocks are deactivated, except for local wake up and VS Power OFF capture. The INH pin (if available) is high ohmic. All registers are reset.

Deep Sleep mode can only be entered from Standby mode, not directly from Normal mode. In this case, the part will automatically enter Sleep mode first and then finally transition to Deep Sleep mode.

Any interrupt must be cleared before entering Deep Sleep mode.

The local wake up (LOCWUE) must be activated.

Switching into Deep Sleep mode is initiated by setting the DOPM bits in the DOPMCR Register to 001 = Deep Sleep mode.

After detecting a wake-up event, the device is reset, initialized and enters MCU Reset Mode. The wake-up event initiating the wake up out of the Deep Sleep mode will be registered in the corresponding registers (SIR1 and SIR5 registers).