The SK5212 is a low speed USB keyboard encoder ASIC with 1 PWM backlight control and 4 LEDs. It supports multimedia, custom defined function and macro keys. It’s the best choice for customized keyboard design for desktop PCs / industrial keyboard / Point-of-sale (POS) terminals / Instrument. The low speed USB interface also makes it fit with some special industrial long cable extender scenario.
The SK5212’s bootloader enables keyboard manufacturers to add any new features after the product release.
The SK5212 scans and encodes an 8-row by 20-column matrix. The key press events are translated to keyboard report. The encoder gets matrix information from on-chip matrix tables.
The SK5212 provides one key-controlled and command-controlled PWM for backlight LED PWM brightness control. An IO pin BLEN can be used to turn off the backlight circuit totally. When BLEN is used, the keyboard scan will be 8-row by 19-columns.