keypad decoder and i/o expansion ADP5585 rev. sp0 information furnished by analog devices is believed to be accurate and reliable. however, no responsibility is assumed by analog devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. specifications subject to change without notice. no license is granted by implication or otherwise under any patent or patent rights of analog devices. trademarks and registered trademarks are the property of their respective owners. one technology way, p.o. box 9106, norwood, ma 02062-9106, u.s.a. tel: 781.329.4700 www.analog.com fax: 781.461.3113 ?2011 analog devices, inc. all rights reserved. features 16 element fifo for event recording 10 configurable i/os allowing functions such as key pad decoding for a matrix of up to 5 5 11 gpios (5 6) with an ADP5585acbz-01-r7 option key press/release interrupts gpio functions gpi with selectable interrupt level 100 k or 300 k pull-up resistors 300 k pull-down resistors gpo with push-pull or open-drain programmable logic block pwm generator internal pwm generation external pwm with internal pwm and function reset generators i 2 c interface with fast mode plus (fm+) support of up to 1 mhz open-drain interrupt output 16-ball wlcsp, 1.59 mm 1.59 mm applications keypad entries and input/output expansion capabilities smart phones, remote controls, and cameras healthcare, industrial, and instrumentation functional block diagram sda gpi scan and decode uvlo por i 2 c interface oscillator registers key scan and decode logic i/o config int rst/r5 pwm scl v dd ADP5585 gnd reset1 gen reset2 gen 09841-001 r0 r3 r1 r2 r4 c0 c1 c2 c3 c4 figure 1. general description the ADP5585 is a 10 input/output port expander with a built-in keypad matrix decoder, programmable logic, reset generator, and pwm generator. input/output expander ics are used in portable devices (phones, remote controls, and cameras) and nonportable applications (healthcare, industrial, and 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 i 2 c-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 require- ments to be integrated as part of the gpio expander; thus, saving board area and cost. for more information about the ADP5585, including the complete data sheet, contact your local analog devices, inc., sales offic e at www.analog.com/sales . www..net
ADP5585 rev. sp0 | page 2 of 2 outline dimensions 01-20-2011-a a b c d 0.545 0.500 0.455 side view 0.230 0.200 0.170 0.300 0.260 0.220 coplanarity 0.05 seating plane 1 2 3 4 bottom view (ball side up) top view (ball side down) ball 1 identifier 0.40 ref 1.20 ref 1.630 1.590 sq 1.550 figure 2. 16-ball wafer level chip scale package [wlcsp] (cb-16-10) dimensions shown in millimeters i 2 c refers to a communications protocol originally developed by philips semiconductors (now nxp semiconductors). ?2011 analog devices, inc. all rights reserved. trademarks and registered trademarks are the property of their respective owners. d09841f-0-5/11(sp0)
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