Datasheet

MSB
MSB
MSB 1- MSB 2-
MSB 1- MSB 2-
LSB+1
LSB+1 LSB ‘0’
LSB
t
SU3
CS
SCLK
SDI
SDO
t
H3
t
D3
t
D4
t
D1
t
D2
Don’tCare
t
SU6
t
H5
CONVST
EOC
(activelow)
CS
SCLK
SDO
SDI
MSB 1- MSB 2- MSB 3-MSB
'1' '0' '1''1'
High-Z
High-Z
TAG2 TAG1LSB TAG0
X X
X
X X
21ConversionClockCycles
t
H2
t
SU3
t
WL2
t
WH2
t
SU1
t
D4
t
H4
t
SU5
CONVST
EOC
(activelow)
CS
SCLK
SDO
SDI
MSB 1- MSB 2- MSB 3-MSB
'1' '0' '1''1'
High-Z
High-Z
LSB TAG2 TAG1LSB+1 '0' '0'TAG0
X X XX X XX
t
H1
t
D3
t
SCLK
t
SU4
t
H3
t
D1
t
D2
t
SU5
t
D4
t
SU2
t
WL1
ADS8331
ADS8332
www.ti.com SBAS363C –DECEMBER 2009–REVISED MAY 2012
TIMING DIAGRAMS
Figure 1. Read While Sampling (Shown with Manual-Trigger Mode)
Figure 2. Read While Converting (Shown with Auto-Trigger Mode at 500 kSPS)
Figure 3. SPI I/O
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