Analog Devices Inc. ADP5588XCPZ-R7

Overview

ADP5588XCPZ-R7 from Analog Devices is a 18-key I²C-compatible keypad controller IC with integrated GPIO expander, programmable debounce, and interrupt output - designed for low-power handheld and portable electronics requiring robust key scanning in space-constrained designs.

For engineers reviewing the ADP5588XCPZ-R7 datasheet, ADP5588XCPZ-R7 pinout, ADP5588XCPZ-R7 application, or ADP5588XCPZ-R7 equivalent, this page delivers verified package mapping (24-lead LFCSP), confirmed I²C interface timing, true key-scan resolution (18 keys), GPIO count (8 configurable pins), and real-world ESD performance (±4 kV HBM) - all validated against Analog Devices' official product documentation.

Technical Context

The ADP5588XCPZ-R7 implements an autonomous key-scan engine with hardware-based debounce logic, eliminating host CPU polling overhead. It supports I²C standard/fast-mode (100 kHz/400 kHz) communication and features a dedicated open-drain INT pin that asserts on key press/release events.

Its internal architecture includes a 3 × 6 matrix scanner, 8 general-purpose I/Os configurable as inputs/outputs/pull-ups, and register-based control of scan rate (10–200 Hz), debounce time (1–64 ms), and wake-up threshold - all accessible via I²C without external components.

Key Specifications

Pinout & Package

ADP5588XCPZ-R7 is housed in a 24-lead, 4 mm × 4 mm × 0.75 mm LFCSP (Lead Frame Chip Scale Package) with exposed thermal pad (CP-24-1). Pin 1 orientation follows C2 convention: top-left corner when sprocket holes face observer and tape feeds counterclockwise.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar keypad controller applications.

Compared with TCA8418RTER and MAX7348ETE+, the ADP5588XCPZ-R7 provides superior design flexibility through its 8 fully configurable GPIOs, user-adjustable debounce, and industrial-grade environmental specs - making it the preferred choice for portable, medical, and industrial systems demanding long-term reliability and feature scalability.

Availability

ADP5588XCPZ-R7 is available at Aetrix Electronics and suitable for smartphone front panels, industrial handheld terminals, medical patient monitors, and POS terminal keypad modules requiring stable component supply across multi-year production cycles.

Supply support for ADP5588XCPZ-R7 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA.

The ADP5588XCPZ-R7 belongs to Analog Devices' Power Management and Interface portfolio, engineered specifically for ultra-low-power human-interface subsystems in battery-operated portable equipment.

FAQ

What is the package type and dimensions of the ADP5588XCPZ-R7?

The ADP5588XCPZ-R7 uses a 24-lead LFCSP package measuring 4 mm × 4 mm × 0.75 mm with an exposed thermal pad. Its pin 1 orientation follows the C2 convention per Analog Devices' tape-and-reel specification - located at the top-left corner when the sprocket holes face the observer and the tape feeds counterclockwise. This package enables high-density PCB layout and efficient thermal dissipation in compact handheld designs.

Does the ADP5588XCPZ-R7 support I²C fast-mode operation?

Yes, the ADP5588XCPZ-R7 supports I²C fast-mode operation at up to 400 kHz, in addition to standard-mode (100 kHz). Its SCL and SDA pins are open-drain and require external pull-up resistors to VDD. The device maintains full register compatibility and timing compliance across both modes, allowing seamless integration with modern microcontrollers featuring flexible I²C peripheral configurations.

How many keys can the ADP5588XCPZ-R7 scan, and what matrix configuration does it use?

The ADP5588XCPZ-R7 scans up to 18 keys arranged in a fixed 3-row × 6-column matrix. ROW0–ROW2 drive the rows, while COL0–COL5 sense column returns. The IC handles full anti-ghosting logic internally and reports key state changes via its INT pin and I²C-accessible key-event registers - no external diodes or matrix decoding logic is required.

Can the GPIO pins on the ADP5588XCPZ-R7 be used as interrupt sources?

Yes, any of the eight GPIO pins on the ADP5588XCPZ-R7 can be individually configured as interrupt sources. When enabled, transitions on a selected GPIO trigger the shared INT pin and set corresponding bits in the GPIO interrupt status register. This allows the ADP5588XCPZ-R7 to consolidate multiple external event signals - such as lid-open sensors or reset buttons - into a single interrupt line to the host processor.

What is the minimum and maximum debounce time configurable on the ADP5588XCPZ-R7?

The ADP5588XCPZ-R7 supports programmable debounce times from 1 ms to 64 ms in powers-of-two increments (1, 2, 4, 8, 16, 32, 64 ms), set globally via the DEBOUNCE register. This hardware-based debounce operates independently of host firmware and applies uniformly across all 18 keys - ensuring consistent rejection of mechanical switch bounce without consuming MCU resources or introducing timing variability.