UG-669
EVAL-ADuC7026 User Guide
Rev. B | Page 4 of 16
POWER INDICATOR/GENERAL-PURPOSE LEDS
A power LED (D3) is used to indicate that a sufficient supply is
available on the board. A general-purpose LED (D2) is directly
connected to P4.2 of the
. When P4.2 is cleared, the
LED is turned on, and when P4.2 is set, the LED is turned off.
ANALOG I/O CONNECTIONS
All analog I/O connections are brought out on Header J3.
ADC0 and ADC1 are buffered using an
to evaluate
single-ended and pseudo differential mode. A potentiometer
can be connected to ADC0 (buffered).
ADC3 and ADC4 can be buffered with a single-ended to
differential op amp on-board, with the
used to evaluate
the ADC in fully differential mode.
ADC2 and ADC5 to ADC11 are not buffered. Be sure to follow
the data sheet recommendations when connecting signals to
these inputs.
DAC1 can be used to control the brightness of the LED D1,
when connected via the S1 switch.
GENERAL-PURPOSE PROTOTYPE AREA
General-purpose prototype areas are provided at the bottom
of the evaluation board for adding external components as
required in the user’s application. AV
DD
, AGND, V
DDIO
, and
DGND tracks are provided in the prototype area.
EXTERNAL MEMORY AND LATCH FOOTPRINT
Footprints for a 32 k × 16 static RAM (CY7C1020CV33), a
64 k × 16 flash (AT29LV1024), and a16-bit latch are also
on board. See the External Memory Interface section.