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MAX7370数据资料

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The MAX7370 I2C-interfaced peripheral provides microprocessorswith management of up to 64 key switches,with optional GPIO and PWM-controlled LED drivers.The key-switch drivers interface with metallic or resistiveswitches with on-resistances up to 5kI. Key inputs aremonitored statically, not dynamically, to ensure low-EMIoperation. The IC features autosleep and autowakemodes to further minimize the power consumption ofthe device. The autosleep feature puts the device in alow-power state (1μA typ) after a timeout period. Theautowake feature configures the device to return tonormal operating mode from sleep upon a keypress.The key controller debounces and maintains a FIFObuffer of keypress and release events (including autorepeat,if enabled). An interrupt (INT) output can beconfigured to alert keypresses, as they occur, or at themaximum rate.
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