ADP5589ACPZ-00-R7

Overview

The ADP5589ACPZ-00-R7 is a 19 I/O port expander with an integrated keypad matrix decoder, programmable logic, reset generator, and PWM generator. It operates on a supply voltage range of 1.65 V to 3.6 V and supports I2C communication at frequencies up to 1 MHz. The device features a 16-element FIFO for event recording, configurable pull-up and pull-down resistors, and dual programmable logic blocks. It is housed in a 24-lead LFCSP package measuring 3.5 mm × 3.5 mm and functions within an ambient temperature range of -40°C to +85°C.

Feature Summary

• Integrates a 16-element FIFO to record key press/release, GPI, and logic events without continuous processor monitoring.
• Supports keypad matrix decoding for configurations up to 11 columns by 8 rows with ghosting prevention capabilities.
• Includes dual programmable logic blocks, internal PWM generation, and two independent reset generators.

Applications

• Portable devices requiring keypad entry and I/O expansion, such as phones and remote controls.
• Nonportable applications including healthcare equipment, industrial systems, and instrumentation.
• Front panel designs utilizing interface connectors to reduce the number of processor I/O lines required.

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm feature sets. The ADP5589ACPZ-00-R7 variant provides all GPIOs pulled up by default. Confirm package type and thermal requirements match the target PCB layout before finalizing procurement orders.

Selection Notes

Select this component when a single IC must handle both keypad scanning and general-purpose I/O expansion. Ensure the application requires an I2C interface with fast-mode plus support. Verify that the 19 available pins cover the necessary row and column counts for the intended keypad matrix size.

Part Context

This part belongs to the Analog Devices ADP5589 series, which are dedicated I/O expanders designed to offload peripheral management from main processors. The series includes variants with different default configurations, such as reset pass-through or specific pull-down options, allowing designers to tailor hardware initialization requirements.

Replacement Considerations

Direct pin-to-pin replacements within the same family include ADP5589ACBZ-00-R7 (WLCSP package) or variants with different default configurations like ADP5589ACPZ-01-R7. Verify that alternative suffixes do not alter critical electrical characteristics or default pin states required by the existing design.