ADP5589ACPZ-00-R7

ADP5589 is a 19 I/O port expander with built-in keypad matrix decoder, programmable logic, reset generator, and PWM generator. I/O expander ICs are used in portable devices (phones, remote controls, and cameras) and nonportable applications (healthcare, industrial, and instrumentation). I/O expanders can be used to increase the number of I/Os available to a processor or to reduce the number of I/Os required through interface connectors for front panel designs. This handles all key scanning and decoding, can flag the main processor via an interrupt line when new key events have occurred. In addition, GPI changes and logic changes can be tracked as events via the FIFO, eliminating the need to monitor different registers for event changes. Application includes devices requiring keypad entry and I/O expansion capabilities.

• 16-element FIFO for event recording
• 9 configurable I/Os allowing functions such as, keypad decoding for matrix up to 11 × 8
• Key press/release interrupts, key pad lock/unlock
• GPIO functions, GPI with selectable interrupt level
• GPO with push-pull or open drain, dual programmable logic blocks
• PWM generator, internal PWM generation
• External PWM with internal PWM AND function, clock divider
• Reset generators, open-drain interrupt output
• VDD input voltage range from 1.65 to 3.6V (VDD = 1.8 to 3.3V, TA = -40 to +85°C)
• 24 lead LFCSP-WQ, operating temperature range from -40°C to +85°C

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