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ADP5587 Datasheet Mobile I/o Expander And Qwerty Keypad Controller

Manufacturer: Analog Devices

Overview: Data Sheet.

General Description

The ADP5587 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 2 mm × 2 mm package, the ADP5587 contains enough power to handle all key scanning and decoding and to 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 as GPIs, GPOs, and keypad rows or columns I2C interface with auto-increment 1.65 V to 3.6 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 275 μs debounce on the reset line and GPIs 1 μA typical idle current 55 μA typical polling current 4 mm × 4 mm LFCSP package Small 2 mm x 2.

More Datasheets from Analog Devices

Part Number Description
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ADP5589 Keypad Decoder and I/O Expansion
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ADP5520 Backlight Driver
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ADP5020 Power Management
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ADP5023 Regulators

ADP5587 Distributor