Digi-Key – Versatile I2C-interfaced peripheral provides management of up to 64 key switches (MAX7359ETG+)Oct 29 2012 - Semiconductors [More Semiconductors Articles]
Now available from Digi-Key, Maxim’s MAX7359 is a 2-wire interfaced, low-EMI key switch controller / GPO. The I2C-interfaced peripheral provides microprocessors with management of up to 64 key switches. Key codes are generated for each press and release of a key for easier implementation of multiple key entries. Key inputs are monitored statically, not dynamically, to ensure low-EMI operation. The switches can be metallic or resistive (carbon) with up to 5kohm of resistance.
The MAX7359 features autosleep and autowake to further minimize the power consumption of the device. The autosleep feature puts the device in a low-power state (1µA typ) after a sleep timeout period. The autowake feature configures the device to return to normal operating mode from sleep upon a key press.
Typical applications cell phones, handheld games, PDAs and portable consumer electronics.More news from Digikey