Datasheet

REV. E
AD7884/AD7885
–4–
t
6
t
2
CS
RD
DATA
BUSY
CONVST
HI-Z
t
3
t
1
t
5
t
7
t
CONVERT
t
4
HI-Z
DATA
VALID
Figure 2. AD7884 Timing Diagram, Using CS and RD
DATA
OLD DATA VALID NEW DATA VALID
BUSY
CONVST
t
1
t
2
t
8
t
CONVERT
Figure 3. AD7884 Timing Diagram, with CS and RD
Permanently Low
HBEN
CS
RD
DATA
BUSY
CONVST
HI-Z HI-Z
DB0–DB7
DB8–DB15
HI-Z
t
2
DATA
VALID
t
1
DATA
VALID
t
9
t
10
t
3
t
5
t
6
t
7
t
4
t
CONVERT
Figure 4. AD7885 Timing Diagram, Using CS and RD
DATA
BUSY
HBEN
CONVST
t
1
t
11
t
12
t
2
t
8
t
13
t
14
t
CONVERT
OLD DATA VALID
(DB8–DB1 5)
NEW DATA VALID
(DB8–DB1 5)
NEW DATA VALID
(DB0–DB7)
NEW DATA VALID
(DB8–DB1 5)
NEW DATA VALID
(DB0–DB7)
Figure 5. AD7885 Timing Diagram, with CS and RD Permanently Low