Description
www.DataSheet4U.com EDE1144 Keypad Encoder IC 4 x 4 Matrix Keypad Encoder IC EDE1144 RS-232 Output 1 0=2400, 1=9600 Baud 2 Connect to +5V 3 Connect .
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. In addition, the EDE1144
Applications
* 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 polle