BU1851GUW Datasheet, Rohm

1) Monitor up to 64-matrix keys 2) Under 5A Stand-by Current 3) Built-in Power On Reset 4) Ghost key rejection
*Absolute maximum ratings (Ta=25℃) Item Supply Voltag.

requiring three-key combinations (such as ) must ensure that the three keys are not wired in positions t.

Key Encoder IC can monitor up to 8x8 matrix (64 keys), which means to be adaptable to Qwerty keyboard. We adopt the architecture that the information of the only key which status is changed, like push or release, is encoded into the 8 bits data. This.