Evaluation Board User Guide UG-176
Rev. 0 | Page 7 of 16
EXTERNAL CONNECTORS
ANALOG I/O CONNECTOR, J3
The analog I/O connector, J3, provides external connections for
all ADC inputs, reference inputs, and DAC outputs. The pinout
of the connector is shown in Tabl e 2 .
Both evaluation board versions have the same pinout.
Table 2. Pin Functions for Analog I/O Connector, J3
Pin Number Pin Function
J3-1 AVDD
J3-2 AGND
J3-3 VREF
J3-4 AGND
J3-5 POT
J3-6 ADC1
J3-7 ADC2
J3-8 ADC3
J3-9 AVDD
J3-10 AGND
J3-11 AGND
J3-12 AGND
J3-13 DIFF
J3-14 V0CM
J3-15 DAC0
J3-16 DAC1
J3-17 DAC2
J3-18 DAC3
J3-19 AGND
J3-20 AGND
EMULATION CONNECTOR, J4
Connector J4 provides a connection of the evaluation board to
the PC via a JTAG emulator.
MINI-USB INTERFACE CONNECTOR, J1
Connector J1 provides power and a simple connection of the
evaluation board to the PC via a USB cable provided with the
ADuC7023 development system.
DIGITAL I/O CONNECTOR, J2
The digital I/O connector, J2, provides external connections for
all GPIOs. The pinout of the connector is shown in Table 3 and
Table 4 for the 32-pin and 40-pin boards, with details of the pin
functions.
I
2
C CONNECTOR, J9
Connector J9 provides duplicate external connections from the
digital I/O. Table 5 provides further details.
Table 3. Pin Functions for the Digital I/O Connector, J2, on the
32-Pin Evaluation Board
Pin No. Pin Function
J2-1 DGND
J2-2 P0.0
J2-3 P0.1
J2-4 P0.2
J2-5 P0.3
J2-6 P0.4
J2-7 P0.5
J2-8 P0.6
J2-9 P0.7
J2-10 P1.0
J2-11 P1.1
J2-12 P1.2
J2-13 P1.3
J2-14 VDDIO
Table 4. Pin Functions for the Digital I/O Connector, J2, on the
40-Pin Evaluation Board
Pin No. Pin Function
J2-1 DGND
J2-2 P0.0
J2-3 P0.1
J2-4 P0.2
J2-5 P0.3
J2-6 P0.4
J2-7 P0.5
J2-8 P0.6
J2-9 P0.7
J2-10 P1.0
J2-11 P1.1
J2-12 P1.2
J2-13 P1.3
J2-14 P2.4
J2-15 P1.4
J2-16 P1.5
J2-17 P1.6
J2-18 P1.7
J2-19 P2.0
J2-20 P2.2
J2-21 P2.3
J2-22 VDDIO
Table 5. Pin Functions for Analog I/O Connector, J9
Pin No. Pin Function
J9-1 DGND
J9-2 P0.5
J9-3 P0.4
J9-4 VDDIO
