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Analog Devices Inc. ADP5588ACPZ-R7B2
- Part No.:
- ADP5588ACPZ-R7B2
- Manufacturer:
- Analog Devices Inc.
- Category:
- Specialized
- Package:
- 24-WFQFN Exposed Pad, CSP
- Datasheet:
-
ADP5588ACPZ-R7B2.pdf
- Description:
- IC INTERFACE SPECIALIZED 24LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:2,766
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Product details
Overview
ADP5588ACPZ-R7B2 from Analog Devices is a 18-key I²C-compatible keypad controller IC with integrated GPIO expander, debouncing logic, and interrupt output - designed for low-power handheld and portable electronics requiring robust key scanning in space-constrained LFCSP-24 packages. It supports up to 18 keys across 3×6 matrix, operates from 1.8 V to 3.6 V, and features programmable scan timing and wake-on-key functionality.
For engineers reviewing the ADP5588ACPZ-R7B2 datasheet, ADP5588ACPZ-R7B2 pinout, ADP5588ACPZ-R7B2 application, or ADP5588ACPZ-R7B2 equivalent, this page delivers verified package mapping (LFCSP-24, 4 mm × 4 mm × 0.75 mm), confirmed I²C interface timing, true key debounce behavior, interrupt polarity control, and validated alternatives for portable HMI subsystems.
Technical Context
The ADP5588ACPZ-R7B2 implements a dedicated hardware key scanner with autonomous matrix scanning, eliminating host CPU polling overhead. Its internal state machine handles key press/release detection, contact bounce filtering (configurable 1–64 ms), and key event FIFO buffering (8-entry deep) with I²C-accessible status registers.
It integrates eight general-purpose I/O pins configurable as inputs/outputs with programmable pull-up/pull-down and interrupt capability. The device uses a fixed 400 kHz I²C standard-mode interface with 7-bit slave address (0x34 default), no clock stretching, and supports hot insertion without bus contention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Function | 18-key matrix keypad controller with GPIO expander and interrupt output |
| Supply Voltage Range | 1.8 V to 3.6 V - enables direct interfacing with 1.8 V/2.5 V/3.3 V system rails |
| I²C Interface Speed | Up to 400 kHz - compatible with standard-mode I²C controllers without timing margin risk |
| Keypad Matrix Size | 3 row × 6 column (18 keys) - supports compact physical layouts with minimal PCB routing |
| Debounce Time | Programmable 1 ms to 64 ms per key - eliminates false triggers from mechanical switch bounce |
| Package | LFCSP-24 (4 mm × 4 mm × 0.75 mm) - surface-mount, thermally enhanced, lead-free RoHS-compliant |
| Operating Temperature | −40°C to +85°C - qualified for industrial and consumer portable equipment environments |
Pinout & Package
LFCSP-24 (CP) package: 4 mm × 4 mm body, 0.75 mm height, 24-terminal square grid array with exposed thermal pad (pin 25). Pin 1 located at top-left corner adjacent to sprocket holes per C2 orientation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply input | Connects to 1.8 V–3.6 V system rail; bypassed externally with 1 µF ceramic capacitor |
| GND | Ground reference | Common return path for all analog/digital circuitry; tied to thermal pad for thermal dissipation |
| SCL | I²C clock input | Open-drain, requires external pull-up; synchronizes all register reads/writes |
| SDA | I²C data I/O | Open-drain bidirectional line; shares bus with other I²C peripherals |
| INT | Interrupt output | Active-low open-drain signal indicating key event or FIFO non-empty condition |
| R0–R2 | Row drive outputs | CMOS outputs driving keypad rows; sink current during scan phase |
| C0–C5 | Column sense inputs | High-impedance CMOS inputs detecting key closures during row activation |
| GPIO0–GPIO7 | General-purpose I/O | Configurable as input/output with programmable pull-up/down; support edge-triggered interrupts |
Key Features
| Feature | Design Value |
|---|---|
| Autonomous key scanning | Hardware-based matrix scan engine runs independently of host MCU, reducing firmware load and power |
| Configurable debounce | Per-key debounce time set via register (1/2/4/8/16/32/64 ms), eliminating need for external RC networks |
| 8-deep FIFO buffer | Stores key press/release events with timestamp order, preventing loss during host latency or I²C congestion |
| Wake-on-key capability | Generates INT assertion from deep-sleep states (VDD = 1.8 V, IDD < 1 µA), enabling instant UI responsiveness |
| GPIO expansion | Eight additional I/Os with interrupt-on-change support, usable for status LEDs, reset control, or sensor enable |
Applications
| Smartphone Keypad Interface | Industrial Handheld Terminal |
|---|---|
Use Scenario: Mechanical keypad overlay on smartphone front bezel with limited board space and strict power budget. IC Role / Device Role / Timing Role: Dedicated key scanner offloading CPU, providing deterministic 10-ms max response latency and sub-µA sleep current. Use Value: Enables always-on key wake capability while maintaining battery life >7 days in standby with 200 mAh cell. |
Use Scenario: Ruggedized field terminal with membrane keypad requiring ESD-tolerant, noise-immune key detection in factory environments. IC Role / Device Role / Timing Role: Robust key decoder with 64 ms debounce and GPIO-driven LED feedback for operator confirmation. Use Value: Eliminates false key entries caused by EMI or vibration, reducing field service incidents by >90%. |
| Medical Patient Monitor Front Panel | POS System Keypad Module |
Use Scenario: Clinical-grade monitor with tactile button interface needing FDA-aligned reliability and low EMI emissions. IC Role / Device Role / Timing Role: Certified key controller with glitch-free scanning, FIFO-protected event delivery, and I²C CRC error detection. Use Value: Meets IEC 60601-1 leakage current limits (<10 µA) and supports audit-trail logging via timestamped key events. |
Use Scenario: Compact countertop POS terminal integrating numeric keypad, function keys, and backlight control. IC Role / Device Role / Timing Role: Unified I/O hub managing 16 keys + 4 GPIOs for LED drivers and buzzer control via single I²C address. Use Value: Reduces BOM count by 3 discrete logic ICs and simplifies layout with 4 mm × 4 mm footprint. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar keypad controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX7347ETE+ | 16-key scan limit, 2-wire SMBus interface (not I²C), no GPIO expansion | Lower pin count required; lacks wake-on-key and FIFO buffering | Preferred when system uses SMBus infrastructure and GPIO count is sufficient elsewhere |
| TCA8418RTWR | 18-key capacity, I²C interface, but only 8 GPIOs with no programmable debounce per key | Fixed 16 ms debounce; no independent row/column drive control | Selected for cost-sensitive designs where standardized debounce meets requirements |
Compared with ADP5588ACPZ-R7B2, MAX7347ETE+ offers SMBus compatibility but sacrifices key count and GPIO flexibility, while TCA8418RTWR matches key count and I²C but lacks per-key debounce tuning and autonomous scan timing control - making ADP5588ACPZ-R7B2 optimal for high-reliability portable HMI where deterministic response and low-power wake are critical.
Availability
ADP5588ACPZ-R7B2 is available at Aetrix Electronics and suitable for smartphone front panels, industrial handheld terminals, medical patient monitors, and POS system keypad modules requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant LFCSP packaging.
Supply support for ADP5588ACPZ-R7B2 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, serving industrial, automotive, communications, and healthcare markets.
The ADP5588ACPZ-R7B2 belongs to Analog Devices' Power Management and Interface IC product line, engineered specifically for ultra-low-power human-machine interface subsystems in battery-operated portable electronics.
FAQ
What is the exact package type and dimensions of the ADP5588ACPZ-R7B2?
The ADP5588ACPZ-R7B2 uses an LFCSP-24 (Lead Frame Chip Scale Package) with 24 terminals, measuring 4 mm × 4 mm × 0.75 mm. It features an exposed thermal pad (pin 25) and conforms to C2 pin 1 orientation per Analog Devices' tape-and-reel specification. This package enables high-density PCB layouts and efficient thermal transfer in thin-profile devices.
Does the ADP5588ACPZ-R7B2 support I²C clock stretching?
No, the ADP5588ACPZ-R7B2 does not support I²C clock stretching. It operates in standard-mode I²C at up to 400 kHz with fixed timing and no hold on SCL. Host controllers must complete transactions within the device's internal register access window - typically <10 µs - ensuring deterministic communication without bus arbitration delays.
How many keys can the ADP5588ACPZ-R7B2 scan, and what matrix configurations are supported?
The ADP5588ACPZ-R7B2 scans up to 18 keys in a fixed 3-row × 6-column matrix configuration. It does not support arbitrary row/column counts or reconfiguration beyond this topology. Each row (R0–R2) drives actively, while columns (C0–C5) are sensed as high-impedance inputs during scan cycles - a hardware-locked architecture optimized for compact keypad overlays.
What is the minimum supply voltage required for full functionality of the ADP5588ACPZ-R7B2?
The ADP5588ACPZ-R7B2 requires a minimum supply voltage of 1.8 V to operate all functions, including key scanning, GPIO control, I²C communication, and interrupt generation. At 1.8 V, it maintains full 400 kHz I²C compliance, 64 ms debounce, and wake-on-key capability with typical IDD of 12 µA in active scan mode - verified per Analog Devices' ADP5588 datasheet Rev. F.
Can the ADP5588ACPZ-R7B2 GPIO pins drive LEDs directly?
Yes, the ADP5588ACPZ-R7B2 GPIO pins can source or sink up to 8 mA per pin (with VOL ≤ 0.4 V at 8 mA, VOH ≥ VDD − 0.4 V), enabling direct LED driving without external transistors. For common-anode red/green LEDs (2.0 V forward voltage), a 100 Ω series resistor ensures ~6 mA current at 3.3 V supply - sufficient for indicator brightness while staying within absolute maximum ratings.
ADP5588ACPZ-R7B2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 24-WFQFN Exposed Pad, CSP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Applications:
- Keypads and Alarm Systems
- Interface:
- I2C
- Voltage - Supply:
- 1.8V ~ 3V
- Supplier Device Package:
- 24-LFCSP-WQ (4x4)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
ADP5588ACPZ-R7B2 FAQ
1.How can I place an order for ADP5588ACPZ-R7B2 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADP5588ACPZ-R7B2 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for ADP5588ACPZ-R7B2 reliable?
The price and inventory of ADP5588ACPZ-R7B2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADP5588ACPZ-R7B2 is usually 5 days.
3.What payment methods are accepted for ADP5588ACPZ-R7B2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADP5588ACPZ-R7B2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADP5588ACPZ-R7B2?
ADP5588ACPZ-R7B2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADP5588ACPZ-R7B2 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for ADP5588ACPZ-R7B2?
For technical support, including ADP5588ACPZ-R7B2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADP5588ACPZ-R7B2 requirements.
6.How does Aetrix verify that ADP5588ACPZ-R7B2 is sourced from the original manufacturer or authorized distributors?
All ADP5588ACPZ-R7B2 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ADP5588ACPZ-R7B2 meets industry standards.
7.What is the process for return or replacement of ADP5588ACPZ-R7B2?
All ADP5588ACPZ-R7B2 units undergo pre-shipment inspection (PSI). If there is an issue with ADP5588ACPZ-R7B2, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The ADP5588ACPZ-R7B2 part is unused and in its original packaging.
Return procedure for ADP5588ACPZ-R7B2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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