GPIO Expander ICs - BU1852GXW
Keyencoder IC BU1852 can monitor up to 8x12 matrix (96 keys), which means to be adaptable to Qwerty keyboard. Weadopt the architecture that the information of the only key which status is changed, like push or release, is encoded into the8 bits data. This can greatly reduce the CPU load which tends to become heavier as the number of keys increase.
|* This product is a STANDARD grade product and not recommend for on-vehicle devices.|
|Num. of GPIO port||20|
|Serial I/F||I2CBUS, Original|
|Power ON Reset||Yes|
|Num. of Slave Address||2|
|Output Format||CMOS output, OPEN Drain output|
|Operating Temperature (Min.)[°C]||-30|
|Operating Temperature (Max.)[°C]||85|
- ・ Monitor up to 96 matrix keys.
・ Under 3μA Stand-by Current
・ Built-in Power on Reset.
・ Ghost key rejection.
・ Keyscan / GPIO selectable
・ 3 volt tolerant Input
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