Analog Devices MicroConverter ADuC824, Reference Manual

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ADuC824 Evaluation Board Reference Guide
(4) External Junctions (Connectors)
Version 1.0 Analog Devices Inc., MicroConverter

Page 11 of 14 www.analog.com/microconverter
Pin Function Pin Function
1 T0 6 T2
2 T1 7 T2EX
3
EA
8 DGND
4
PSEN
9 DVDD
5 ALE 10 DGND
Table 2: Timer/Strobe connector J3
J4/J5/J6 (Port0 / Port2 / Port 3)
3 parallel ports (Port0, Port2 and Port3) are brought out to the connectors J4, J5 and J6. The exact pinout
of any of these connectors is shown below with reference to figure 3 above.
Pin Function Pin Function
1 PortX.0 6 PortX.5
2 PortX.1 7 PortX.6
3 PortX.2 8 PortX.7
4 PortX.3 9 DVDD
5 PortX.4 10 DGND
Table 3: Pin functions for Port0, Port2 and Port3 connectors J4, J5, J6
J7 (SPI/I
2
C Connector)
J7 is situated to the left side of the board and gives access to both the SPI and I
2
C interfaces. The pinout is
as in fig 3 with the orientation vertical. Look for the pin1 marker on the evaluation board.
Pin Function Pin Function
1 SCLOCK 6 DGND
2 DGND 7
SS
3 SDATA/MOSI 8 DGND
4 DGND 9 NC
5 MISO 10 DGND
Table 4: Pin functions for SPI connector J7
J8/J9/J10 Power Supply Connections
J8 allows for the connection between the evaluation board and the 9V power supply provided in the
ADuC824 QuickStart Development System.
J9 and J10 allow for the connection of a typical 9V battery to the evaluation board.
J11 (DAC OpAmp Voltage Bias Input)
J11 is included as an open circuit surface mount pad on the application board. This can be used to bias the
voltage output level of the on-board DAC.