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ADP5585:  Keypad Decoder and I/O Expansion

Product Details

Product Status:Recommended for New Designs

The ADP5585 is a 10I/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, & cameras) and non-portable applications (healthcare, industrial & 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.

The ADP5585 handles all key scanning and decoding and can flag the main processor via an interrupt line that new key events have occurred. GPI changes and logic changes can also be tracked as events via the FIFO, eliminating the need to monitor different registers for event changes. The ADP5585 is equipped with a FIFO to store up to 16 events. Events can be read back by the processor via an I2C compatible interface.

The ADP5585 frees up the main processor from having to monitor the keypad, thereby reducing power consumption and/or increasing processor bandwidth for performing other functions.

The programmable logic functions allow common logic requirements to be integrated as part of the GPIO expander, saving board area and cost.

APPLICATIONS

Devices requiring keypad entry and I/O expansion capabilities

FEATURES and BENEFITS

  • 16 element FIFO for event recording
  • 10 configurable I/Os
  • Key pad decoding for matrix up to 5x5, with an 11 GPIO (5x6) Option
  • Key press/release interrupts
  • GPIO functions
  • GPI with selectable interrupt level
  • 100k/300k pull-up
  • 300k pull-down
  • GPO with push-pull or open-drain
  • Programmable Logic Block
  • PWM generator
    - Internal PWM Generation
    - External PWM with internal PWM AND function
  • Reset generators
  • I2C interface with Fast-mode plus (Fm+) support up to 1MHz
  • Open drain interrupt output
  • 16 bump WLCSP

Functional Block Diagram for ADP5585

Documentation

Title Content Type File Type
ADP5585: Keypad Decoder and I/O Expansion Data Sheet (Rev C, 01/2013) (pdf, 77 kB) Data Sheets PDF
Glossary of EE Terms Glossary HTML

Design Tools,Models,Drivers & Software

Title Content Type File Type
ADP5589 Input Keyboard and GPIO Linux Driver Device Drivers HTML

Evaluation Kits & Symbols & Footprints

Evaluation Boards & KitsView the Evaluation Boards and Kits page for documentation and purchasing

Symbols and Footprints— Analog Devices offers Symbols & Footprints which are compatible with a large set of today’s CAD systems for broader and easier support.

SampleSample & Buy

Price, packaging, availability

ADP5585 Model Options
Model Package Pins Temp.
Range
Packing,
Qty
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
ADP5585ACBZ-00-R7 Status: Production 16 Ball WLCSP (11.59x1.59) 16 Ind Reel, 3000 - $0.75 Y  Material Info Notify Me Purchase Sample
ADP5585ACBZ-01-R7 Status: Production 16 Ball WLCSP (11.59x1.59) 16 Ind Reel, 3000 - $0.75 Y  Material Info Notify Me Purchase Sample
ADP5585ACBZ-02-R7 Status: Production 16 Ball WLCSP (11.59x1.59) 16 Ind Reel, 3000 - $0.75 Y  Material Info Notify Me Purchase Sample
ADP5585ACBZ-04-R7 Status: Production 16 Ball WLCSP (11.59x1.59) 16 Ind Reel, 3000 - - Y  Material Info Notify Me Purchase Sample
ADP5585ACPZ-00-R7 Status: Production 16 ld LFCSP (3x3mm, 1.6mm exposed pad) 16 Ind Reel, 1500 - $0.75 Y  Material Info PCN Purchase Sample
ADP5585ACPZ-01-R7 Status: Production 16 ld LFCSP (3x3mm, 1.6mm exposed pad) 16 Ind Reel, 1500 - $0.75 Y  Material Info PCN Purchase Sample
ADP5585ACPZ-03-R7 Status: Production 16 ld LFCSP (3x3mm, 1.6mm exposed pad) 16 Ind Reel, 1500 - $0.75 Y  Material Info PCN Purchase Sample
Price Table Help

The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

ADP5585 Evaluation Board
Model Description Price RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
ADP5585CP-EVALZ Status: Production Evaluation Board $160.00 Yes -

Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.

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