4X4 KEY PAD

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DESCRIPTION

PRODUCT NAME: 4*4 KEYPAD
PRODUCT DESCRIPTION:
                    A 4x4 matrix keypad requiring eight Input/Output ports for  interfacing issued  as an example. Rows are connected to Peripheral Input/Output (PIO) pins configured as output. Columns are connected to PIO pins configured as input. In this configuration, pull-up resistors are added in order to apply a high level on the corresponding pins.

FEATURES:
•    Contact debouncing.
•    Easy to interface.
•    Interfaces  to any  microcontroller or microprocessor.

APPLICATIONS:

•    Vending machines.
•    Public phones.
•    Ticketing.

SPECIFICATIONS:
•    Operating force: 60 +/- 20cN
•    Key lifetime: 1x109 million operations
 
PIN DETAILS:
Pin    Name    Details
1-4    R0-R3    rows
5-8    C0-C3    columns
9    pull-up    10K pull-up