SPRUJ79 November 2024 F29H850TU , F29H859TU-Q1
In the power down mode, the EMIF drives EM1SDCKE low to lower the power consumption. EM1SDCKE goes high when there is a need to send refresh (REFR) commands, after which EM1SDCKE is again driven low. EM1SDCKE remains low until any request arrives. Refer to Section 14.2.5.8 for more details on placing the EMIF in power-down mode.