Datasheet

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SLAS390B − JUNE 2003 − REVISED FEBRUARY 2005
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23
APPLICATION INFORMATION
MICROCONTROLLER INTERFACING
ADS8371 to 8-Bit Microcontroller Interface
Figure 38 shows a parallel interface between the ADS8371 and a typical microcontroller using the 8-bit data bus.
The BUSY signal is used as a falling-edge interrupt to the microcontroller.
CS
BYTE
RD
CONVST
BDGND
+VBD
DB[15:8]
Micro
Controller
GPIO
RD
10 µF
0.1 µF
Analog 5 V
0.1 µF
Digital 3 V
Ext Ref Input
Analog Input
+VA
REFM
AGND
+IN
−IN
AD8371
0.1 µF
REFIN
BDGND
AGND
AD[7:0]
GPIO
GPIO
1000 Ω
100 Ω
REF 3040
OUT
Figure 38. ADS8371 Application Circuitry