MPC5777 blank block check time

[Summer_Guo]

We are using SDD1.1.0 for MPC5777 Bootloader development, it takes very long time for blank block checking, would like to know the detailed checking time

would take xx us per xx bytes blank block

[lukaszadrapa]

Hi Summer,

such spec is not available. The only provided timing can be found in Table 85 in the user manual:

c:\Program Files (x86)\Freescale\Standard Software Driver v1.1.0\MPC57xx\SSD_C55_UM_v1.1.pdf

There would be a lot of combinations because it depends on device, system clock etc., so it was not measured.

Blank check is implemented by software, there's no support for this in flash controller. It looks like:

To make it faster, configure max system clock, enable instruction cache and check if you configured wait state as required:

Regards,

Lukas