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DM300019 Datasheet(PDF) 35 Page - Microchip Technology

Part # DM300019
Description  Starter Development Board Userís Guide
PDF  50 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

DM300019 Datasheet(HTML) 35 Page - Microchip Technology

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Demonstration Program Operation
© 2006 Microchip Technology Inc.
DS51584B-page 31
If any of these tests fail, then at the end of the Tone test the LED corresponding to the
failed test will blink slowly (2 blinks/sec). For example, if RD4 blinks, it means that the
UART test failed. The table below correlates the blinking LED with each test and
indicates the possible cause for the failure:
If all tests passed, then none of the LEDs will blink.
Blinking LED
Test Failed
Reasons for Failure
RD4
UART
UART driver chip failed; UART shorting
jumper not connected on J1
RD5
Keypad
S1 and S2 not working properly
RD6
Potentiometer
Potentiometer R13 faulty
RD7
Digital Potentiometer/Op Amp Digital Potentiometer/Op Amp failed



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