ADP5586ACBZ-00-R7

Overview

The ADP5586ACBZ-00-R7 is a keypad decoder and I/O port expander manufactured by Analog Devices. It features ten configurable I/Os supporting up to a 5x5 matrix keypad, with an integrated 16-element FIFO for event recording. The device operates on a supply voltage range of 1.65 V to 3.6 V and supports I2C communication at frequencies up to 1 MHz. It includes programmable logic blocks, pulse generators, and a reset generator. The component is housed in a 16-ball WLCSP package measuring 1.59 mm × 1.59 mm and functions within a temperature range of -40°C to +85°C.

Feature Summary

• Integrates a 16-element FIFO to record key press/release events, GPI changes, and logic activity without continuous processor monitoring.
• Supports keypad decoding for matrices up to 5 rows by 5 columns using internal pull-up and sink circuits.
• Includes programmable logic blocks, two pulse generators, and a reset generator to reduce external component count.
• Features open-drain interrupt output and selectable internal pull-up/pull-down resistors for flexible I/O configuration.

Applications

• Keypad entries and input/output expansion in portable devices
• Smartphones, remote controls, and digital cameras
• Healthcare, industrial, and instrumentation equipment

Procurement Notes

Verify the specific ordering suffix matches the required default configuration, as the ADP5586ACBZ-00-R7 variant specifies GPIO pull-down on startup and a standard 5-row by 5-column matrix capability. Confirm that the 16-ball WLCSP package dimensions and pinout align with the target PCB footprint. Ensure the I2C address and interface timing requirements are compatible with the host system controller before finalizing procurement.

Selection Notes

Select this component when a compact solution is needed for keypad scanning and general-purpose I/O expansion in space-constrained designs. The built-in FIFO reduces processor overhead by handling event tracking autonomously. Consider the 1.65 V to 3.6 V operating range for compatibility with low-voltage systems. Verify that the maximum clock frequency and I2C timing specifications meet the system's bus requirements.

Part Context

This part belongs to the ADP5586 series of I/O expanders from Analog Devices. The ACBZ-00-R7 designation indicates a specific configuration with GPIO pull-down on startup and no alternate I2C address. Other variants in the series may offer different row counts or addresses, such as the ADP5586ACBZ-01-R7 which adds a sixth row. This model is distinct from the ADP5588 and ADP5589 which offer different pin counts and feature sets.

Replacement Considerations

Direct substitutes include other ADP5586 variants like the ADP5586ACBZ-01-R7 if an additional row is required, or the ADP5586ACBZ-03-R7 for a different I2C address. Cross-series replacements like the ADP5588ACPZ-R7 offer more I/Os but differ in package type (LFCSP-24 vs. WLCSP-16) and voltage range. Verify pin compatibility and register mapping when substituting.

FAQ

What is the maximum keypad matrix size supported by the ADP5586ACBZ-00-R7?

The ADP5586ACBZ-00-R7 supports a maximum keypad matrix size of 5 rows by 5 columns, totaling 25 switches.

How does the device handle multiple simultaneous key presses?

The key scanner detects all pressed keys by driving column pins low sequentially and sensing row pins. It records each press and release event in the 16-element FIFO, allowing the processor to read them in order.

Can the ADP5586 generate interrupts for both key events and GPI changes?

Yes, the device can generate interrupts for key events via the EVENT_INT bit and for GPI changes via the GPI_INT bit. These can be configured independently through the control registers.