AD7884AN データシートの表示（PDF） - Analog Devices
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AD7884AN Datasheet PDF : 16 Pages
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AD7884/AD7885
CONVST
t1
CS
RD
BUSY
DATA
t2
t CONVERT
Hi-Z
t3
t4
t5
t6
DATA
VALID
t7
Hi-Z
Figure 2. AD7884 Timing Diagram, Using CS and RD
t1
CONVST
t9
HBEN
CONVST
BUSY
t1
t2
tCONVERT
DATA
OLD DATA VALID
t8
NEW DATA VALID
Figure 3. AD7884 Timing Diagram, with CS and RD
Permanently Low
t10
CS
RD
BUSY
DATA
t3
t5
t4
t2
t CONVERT
t7
t6
Hi-Z
DATA
Hi-Z
VALID
DB0–DB7
Figure 4. AD7885 Timing Diagram, Using CS and RD
DATA
Hi-Z
VALID
DB8–DB15
CONVST
HBEN
BUSY
DATA
t1
t2
t CONVERT
t11
t12
OLD DATA VALID
(DB8 – DB15)
t8
t13
t14
NEW DATA VALID
(DB8 – DB15)
NEW DATA VALID
(DB0 – DB7)
NEW DATA VALID
(DB8 – DB15)
NEW DATA VALID
(DB0 – DB7)
Figure 5. AD7885 Timing Diagram, with CS and RD Permanently Low
–4–
REV. C
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