The TCA8418 supports applications such as smartphones, netbooks and mobile Internet devices (MID).
Key features and benefits of the TCA8418
· The key controller includes an oscillator that debounces at 50 us and maintains a 10-byte FIFO of key-press and key-release events, which can store up to 10 keys with overflow wrap capability.
· An interrupt (/INT) output can be configured to alert key presses and releases, either as they occur or at maximum rate.
· Power supply voltage operating range of 1.65 V to 3.6 V allows for glueless interface to today’s most advanced processors.
· Eighteen general purpose inputs/outputs (GPIO) can be configured into eight inputs and ten outputs, which supports an 8 x 10 keypad array (80 buttons) through the I2CTM interface.
· Low standby (idle) current consumption of 3 uA extends battery life in portable devices.
· Can be used with a processor that has limited GPIOs, and is compatible with a variety of advanced processors including many of TI’s OMAP™ 3 applications processors.