After A/D conversion (BUSY = L), I read datas by Parallel Read Access (Figure 3 on SBAS404D –OCTOBER 2006–REVISED FEBRUARY 2016).
I turn CONVST_x to L after BUSY=L. CONVST_x is L to next data conversion.
CS is activated for each data read, not continuous. Read access timing is the same for all read access.
Sometimes first data is worng. Followings are datas when first data is wrong.
1st Data - wrong CH A0 data
2nd Data - correct CH A1 data
3rd Data - correct CH B0 data
4th Data - correct CH B1 data
5th Data - correct CH C0 data
6th Data - correct CH C1 data
7th data - correct CH A0 data
It seems A/D conversions are correct and only first data read access failed.
Why is first read data wrong sometimes ?