Datasheet

www.ti.com
APPLICATION INFORMATION
MICROCONTROLLER INTERFACING
ADS8484 to 8-Bit Microcontroller Interface
CS
BYTE
BUS18/16
RD
CONVST
BDGND
+VBD
DB[17:10]
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
ADS8484
0.1 µF
REFIN
BDGND
AGND
AD[7:0]
Data Bus D[17:0]
GPIO
GPIO
GPIO
+VA
REFOUT
REFIN
REFM
AGND
0.1 µF
1 µF
0.1 µF
10 µF
Analog 5 V
ADS8484
AGND
AGND
ADS8484
SLAS511 – NOVEMBER 2007
Figure 36 shows a parallel interface between the ADS8484 and a typical microcontroller using the 8-bit data bus.
The BUSY signal is used as a falling-edge interrupt to the microcontroller.
Figure 36. ADS8484 Application Circuitry
Figure 37. ADS8484 Using Internal Reference
Copyright © 2007, Texas Instruments Incorporated Submit Documentation Feedback 19
Product Folder Link(s): ADS8484