EDE1144 查看數據表（PDF） - Unspecified
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EDE1144 Datasheet PDF : 7 Pages
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EDE1144 Keypad Encoder IC
Although we strive to maintain a high degree of technical accuracy, this document may contain typographical errors or other inaccuracies.
We reserve the right to correct any inaccuracy in future editions of this document without notice. This document and examples contained
herein are provided 'As Is' without warranty of any kind expressed or implied. This document is to be used for informational purposes only
and may not be duplicated for commercial purposes other than by distributors authorized by E-Lab Digital Engineering, Inc.
ABSOLUTE MAXIMUM RATINGS
Oscillator frequency .......................................... 4 MHz
Supply Voltage ................................................... 7.5V
Ambient temperature under bias ...................... -55 °C to +125°C
Max. current sunk by an output pin .................. 25mA
Max. current sourced by an output pin ............. 20mA
Max. current sunk by all 4 column inputs.......... 50mA
Max. current sourced by all 4 row outputs......... 40mA
STANDARD OPERATING CONDITIONS
Supply voltage ................................................. 4.5V to 5.5V
Typical current draw......................................... 1.8mA
Operating temperature ..................................... 0 °C to +70°C
The EDE1144 IC is implemented as firmware on a PIC16C54 microcontroller, manufactured by Microchip Technology, Inc. For a more
comprehensive technical summary of this device, please refer to the PIC16C54 datasheet (accessible from the E-Lab web site).
IMPORTANT NOTICE
E-LAB Digital Engineering, Inc. (E-LAB), reserves the right to
change products or specifications without notice. Customers are
advised to obtain the latest versions of product specifications,
which should be considered when evaluating a product’s
appropriateness for a particular use.
THIS PRODUCT IS WARRANTED TO COMPLY WITH E-LAB’S
SPECIFICATION SHEET AT THE TIME OF DELIVERY. BY
USING THIS PRODUCT, CUSTOMER AGREES THAT IN NO
EVENT SHALL E-LAB BE LIABLE FOR ANY DIRECT,
INDIRECT, SPECIAL, INCIDENTAL OR CONSEQUENTIAL
DAMAGES AS A RESULT OF THE PERFORMANCE, OR
FAILURE TO PERFORM, OF THIS PRODUCT.
E-LAB MAKES NO OTHER WARRANTIES, EXPRESSED OR
IMPLIED, INCLUDING ANY IMPLIED WARRANTIES OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR
PURPOSE.
COPYRIGHT NOTICE
E-LAB’s LIABILITY IS FOR A PERIOD NO GREATER THAN 90
DAYS FROM DATE OF SHIPMENT BY E-LAB AND IS LIMITED
TO REPLACEMENT OF DEFECTIVE PRODUCT. This warranty
covers only defects arising under normal use and not
malfunctions resulting from misuse, abuse, modification, or
repairs by anyone other than E-LAB.
E-LAB’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS
CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR
SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF
THE PRESIDENT OF E-LAB. Life support devices or systems are
those which are intended to support or sustain life and whose
failure to perform can be reasonably expected to result in a
significant injury or death to the user. Critical components are
those whose failure to perform can be reasonably expected to
cause failure of a life support device or system or affect its safety
or effectiveness .
This product may not be duplicated. E-LAB Digital Engineering, Inc. holds all copyrights on firmware, with all rights reserved. Unauthorized
duplication of this device will be subject to penalty under state and/ or federal law.
EDE1144 and the E-LAB logo are trademarks of E-LAB Digital Engineering, Inc. All other trademarks and registered trademarks are property
of their respective owners.
CONTACTING US
We are continually updating our product line. Please contact us for our latest product information.
Dannell Electronics Ltd
Unit 2, Funston's Commercial Centre
Arkesden Road
Clavering
Essex CB11 4QU, ENGLAND
Telephone: UK Calls 0845 603-1509
International :441 799 551 215
Fax: 01 799 551 216, International 441 799 551 216
Internet: http://www.dannell.co.uk
E-Mail: sales@dannell.co.uk
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