The SK5120 is a low power USB keyboard encoder with a user-programmable keyboard matrix. The IC can be programmed to any keyboard with four matrix tables for FN and NUMLOCK cases, so the IC is the best choice for custom keyboard solution but with an off-the-shelf IC.
The IC operates under low voltage 3.3V and can interface a low voltage (3V) PS/2 mouse such as touchpad to minimize the system power consumption.
The SK5120 scans and encodes an 8-row by 18-column matrix. The key press events are translated to keyboard and mouse report. The encoder gets matrix information from on-chip flash matrix table. Sprintek provides Windows® application FlexMatrix Editor and Programmer software to edit, download and upload the matrix table.
The SK5120 provides an external PS/2 port that supports hot plug and hot swap of PS/2 mouse including wheel mouse, and keyboard devices. It is ideal to work with touchpad or pointing stick PS/2 mouse encoder for new architecture laptop/netbook computers.