in the last you are missing the crossbar and in both the sfrpage
 

the datasheet for your SD card should give you all information you need

SD and 8051 has been done

 seem to have a lot of bugs, things only work randomly and stops working randomly.

bad, yes but no worse than some other manufacturers stuff

generally, most free software makes you remember the adage "you get what you pay for"

when I show up for a contract and find they are using manufacturer software I go buy a bottle of Prozac

I recall another such where a day with less than 10 crashes was a good day

 seem to have a lot of bugs, things only work randomly and stops working randomly.

bad, yes but no worse than some other manufacturers stuff

generally, most free software makes you remember the adage "you get what you pay for"

generally, when I show up for a contract and find they are using manufacturer software I go buy a bottle of Prozac

I recall another such where a day with less than 10 crashes was a good day

 seem to have a lot of bugs, things only work randomly and stops working randomly.

bad, yes but no worse than some other manufacturers stuff

generally, most free software makes you remember the adage "you get what you pay for"

generally, when I show up for a contract and find they are using manufacturer software I go buy a bottle of Prozac

I recall another such where a day with less than 10 crashes was a good day

 seem to have a lot of bugs, things only work randomly and stops working randomly.

bad, yes but no worse than some other manufacturers stuff

generally, most free software makes you remember the adage "you get what you pay for"

generally, when I show up for a contract and find they are using manufacturer software I go buy a bottle of Prozac

When any surge or EFT spike is apply my device that time MCU is rebooting

well, clearly you need more protection than you have

 any internally ESD and EFT is protection is available at IO line,

information will not solve your problem