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What key management IC are you using

Nocky Tian

Hi,everyone
Are you using a keyboard management IC?
Which one is the best?
Take 4 X 4 keyboard for a example!
Discuss it!

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  • 0 in reply to Oleg Sergeev

    But if a additional IC is ued,the port could be saved.
    Now,I'm using a ZLG7189 which is produced by Guangdong Zhouligong in China.It has a I2C-like interface. Only 4 port line is used and tow of them could be shared.
    And it could scan keyboard automatically,in fact,it could manage 64 keys and 8 7-seg LED.
    Maybe others are using a better IC.If you let the MCU scan keyboards,it will also take much CPU time.

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  • 0 in reply to Oleg Sergeev

    But if a additional IC is ued,the port could be saved.
    Now,I'm using a ZLG7189 which is produced by Guangdong Zhouligong in China.It has a I2C-like interface. Only 4 port line is used and tow of them could be shared.
    And it could scan keyboard automatically,in fact,it could manage 64 keys and 8 7-seg LED.
    Maybe others are using a better IC.If you let the MCU scan keyboards,it will also take much CPU time.

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