Datasheet Details
| Part number | ADP5587 |
|---|---|
| Manufacturer | Analog Devices |
| File Size | 1.26 MB |
| Description | Mobile I/O Expander And QWERTY Keypad Controller |
| Datasheet |
 ADP5587 Datasheet
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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.
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.