ADP5587ACPZ-R7 Mobile I/O Expander and Keypad Controller by Analog Devices

Mobile I/O Expander and Keypad Controller
Status: Production
Series: ADP5587
RoHS: Compliant
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The ADP5587 is an I/O port expander and keypad matrix designed for QWERTY type phones that require a large keypad matrix and expanded I/O lines. I/O expander ICs are used in mobile platforms as a solution to the limited number of GPIOs available in the main processor.In its small 2 mm × 2 mm package, the ADP5587 contains enough power to handle all key scanning and decoding and to flag the processor of key presses and releases via the I2C interface and interrupt. The ADP5587 frees the main microprocessor from the need to monitor the keypad, thereby minimizing current drain and increasing processor bandwidth. The ADP5587 is also equipped with a buffer/FIFO and key event counter to handle and keep track of up to 10 unprocessed key or GPI events with overflow wrap and interrupt capability.The ADP5587 has keypad lock capability with an option to trigger or not trigger an interrupt at key presses and releases. All communication to the main processor is done using one interrupt line and two I2C-compatible interface lines. The ADP5587 can be configured as a keypad matrix of up to 8 rows × 10 columns (a maximum of 80 keys).When the ADP5587 is used for smaller keypad matrices, unused row and column pins can be reconfigured to act as general-purpose inputs or outputs. R0 to R7 denote the row pins of the matrix, whereas C0 to C9 denote the column pins. At power-up, all rows and columns default to GPIs and must be programmed to function as part of the keypad matrix or as GPOs.Two options for I2C addresses exist for the LFCSP package to reduce the chance of port contention and allow up to two ADP5587 ICs to operate on the same I2C bus (see the Ordering Guide).

Where to Buy

Prices starting from US$0.87

Distributor Stock
Logo for RS
RS
from US$1.98
634
in stock
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Logo for Chip One Stop
Chip One Stop
from US$0.87
1
in stock
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Logo for Newark Electronics
Newark Electronics
from US$2.30
-
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Logo for element14
element14
from US$1.85
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Logo for Farnell
Farnell
from US$1.79
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Features

18-GPIO port expander or 10 × 8 keypad matrix
GPIOs configurable as GPIs, GPOs, and keypad rows or columns
I2C interface with auto-increment
1.65 V to 3.6 V operation
Keypad lock capability
Open-drain interrupt output
Key press and key release interrupts
GPI interrupt with level programmability
Programmable pull-ups
Key event counter with overflow interrupt
275 μs debounce on the reset line and GPIs
1 μA typical idle current
55 μA typical polling current
4 mm × 4 mm LFCSP package
Small 2 mm x 2 mm WLCSP package, 0.4 mm pitch
Multiple I2C addresses available for the LFCSP package to allow multiple port expanders on the same bus

Alternative Descriptions

I/O and QWERTY Keypad Controller LFCSP24 | RS
I/O Expander, 8Bit, 400Khz, Lfcsp-Ep | Newark Electronics
I/O EXPANDER, 8BIT, 400KHZ, LFCSP-EP | element14

Frequently Asked Questions

Where can I find additional details, specifications and documents for a ADP5587ACPZ-R7?

Additional datasheets, footprints and schematics for ADP5587ACPZ-R7 are listed on our Part Details page. You can also find images and similar parts to ADP5587ACPZ-R7 on this page.

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Distributor pricing and stock information is available for ADP5587ACPZ-R7 on our Product Comparison page. Access via the 'View Pricing & Stock' button to view ADP5587ACPZ-R7 price breaks, MOQs, lead times, inventory and SKUs from distributors.

What category does ADP5587ACPZ-R7 fall under?

The ADP5587ACPZ-R7 is listed under Mobile I/O Expander and Keypad Controller.

Can I view similar or alternative parts?

You can view similar parts to ADP5587ACPZ-R7 when available in the Mobile I/O Expander and Keypad Controller range under the specifications section at the bottom of the details page.

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Submit any questions directly to the customer support team of the distributor listing the product. For the ADP5587ACPZ-R7 you can contact the distributor directly for product support, shipping queries etc.

Is the ADP5587ACPZ-R7 RoHS compliant?

Yes. This part has been flagged as RoHS Compliant by Analog Devices.

Which authorised distributors for ADP5587ACPZ-R7 have stock available?

Authorised distributors including RS, Chip One Stop, Newark Electronics, element14 and Farnell have stock available or on a lead time for ADP5587ACPZ-R7.

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