Part Number
|
XAPP512 |
Manufacturer
|
Xilinx |
Description
|
Implementing Keypad Scanners |
Published
|
Jul 5, 2006 |
Detailed Description
|
www.DataSheet4U.com
Application Note: CoolRunner-II CPLD
R
Implementing Keypad Scanners with CoolRunner-II
XAPP512 (v...
|
Datasheet
|
XAPP512
|
Overview
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DataSheet4U.
com
Application Note: CoolRunner-II CPLD
R
Implementing Keypad Scanners with CoolRunner-II
XAPP512 (v1.
0) April 4, 2005
Summary
This application note provides a functional description of Verilog source code for a keypad scanner.
The code is used to target the lowest density, 32-macrocell CoolRunnerTM-II XC2C32A CPLD device in a CP56 package (6 mm x 6 mm).
The keypad accommodated in this design has 8 rows and 8 columns.
The design can easily be scaled to target keypads with more or less rows/columns.
For instance, a keypad with 7 rows and 7 columns would allow the design to fit in the smallest QFG32 package (5 mm x 5 mm).
To obtain the Verilog source code described in thi...
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