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EDE1144 Keypad Encoder IC
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The EDE1144 Keypad Encoder IC is designed to interface a matrix-type 4 row x 4 column (16 key or less) keypad to a microcontroller or other host processor. A one-wire serial or four-wire parallel interface returns the keypress data and can be used in conjunction with a 'data valid' signal for polled or interrupt-driven applications. The EDE1144 provides enhanced keypad features such as contact debouncing and key auto-repeat in an easy-to-use package that will lower software overhead in the host microcontroller and reduce the I/O pin requirements from eight to one, frequently resulting in the use of a less costly host microcontroller in your design.
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Download the EDE1144 Datasheet (Acrobat PDF).
The EDE1144 requires a 4 MHz Resonator or Crystal to operate. We offer a 4 MHz ceramic resonator with built-in load capacitors. Alternately, you may choose to supply your own crystal.
4 MHz Resonator with internal load capacitors: $1.50
To Order, Click on your choice:
EDE1144/P (DIP Package)
EDE1144/SO (SOIC Package)
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**Specifications subject to changes**
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E-Lab product specifications are available in Adobe Acrobat PDF format (ver3.0). Download a free copy of the Acrobat Reader software directly from Adobe.
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