Compact Flash 5 series

AP-CFxxxxRXXS-XXXXXXA

4

© 2013 Apacer Technology Inc.

Rev. 1.2

1.1.5 Power Failure Management

Power Failure Management plays a crucial role when experiencing unstable power supply. Power

disruption may occur when users are storing data into the SSD. In this urgent situation, the controller

would run multiple write-to-flash cycles to store the metadata for later block rebuilding. This urgent

operation requires about several milliseconds to get it done. At the next power up, the firmware will

perform a status tracking to retrieve the mapping table and resume previously programmed NAND blocks

to check if there is any incompleteness of transmission

2. Functional Block

The CompactFlash Card (CFC) includes a controller and flash media, as well as the CompactFlash

standard interface. Figure 2-1 shows the functional block diagram.

Figure 2-1: Functional block diagram