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ADP5588 Datasheet Keypad I/o Expander

Manufacturer: Analog Devices

Overview: Data Sheet.

General Description

The ADP5588 is an I/O port expander and keypad matrix designed for QWERTY type phones that require a large keypad matrix and expanded I/O lines.

I/O expander ICs are used in mobile platforms as a solution to the limited number of GPIOs available in the main processor.

In its small 4 mm × 4 mm package, the ADP5588 contains enough power to handle all key scanning and decoding and flag the processor of key presses and releases via the I2C® interface and interrupt.

Key Features

  • 18-GPIO port expander or 10 × 8 keypad matrix GPIOs configurable to GPIs, GPOs, and keypad rows or columns Dual light sensor inputs (C8 and C9) I2C interface I2C register read autoincrement 1.8 V to 3.0 V operation Keypad lock capability Open-drain interrupt output Key press and key release interrupts GPI interrupt with level programmability Programmable pull-ups Key event counter with overflow interrupt 50 μs debounce on the reset line and GPIs 1 μA typical idle current, 55 μA typical polling c.

More Datasheets from Analog Devices

Part Number Description
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ADP5520 Backlight Driver
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ADP5020 Power Management
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ADP5023 Regulators

ADP5588 Distributor