this add-on to nxps i2c 2005-1 demo board makes it easy to test and design with the pca9633, a fast-mode plus (fm+) led driver, that provides 4-bit blink and dimming for red/blue/green/amber (rgba) color mixing applications. key features ? easy-to-use daughter card wi th comprehensive evaluation software ? on-board rgba leds with diffuser ? 1 mhz fast-mode plus i 2 c-bus serial interface ? compliant with i 2 c-bus fast-mode (400 khz) and standard- mode (100 khz) ? 2.3 v to 5.5 v operation with 5.5 v tolerant i/os ? 8-bit resolution individual pwm and 8-bit group pwm ? totem-pole outputs (25ma sink/10 ma source) with software programmable open-drain led outputs selection ? 64 programmable slave addresses using 3 address pins ? outputs change on stop or ack applications ? rgb or rgba led drivers, lcd backlights, led displays, led status information, gaming machines,keypad backlights easily test and demonstrate the pca9633 4-bit led driver the pca9633 uses the industry-standard i 2 c/smbus port to communicate with the host demonstration board. the card can be connected in series with other i 2 c-bus daughter cards, via a standard 9-pin connector, to create a complete evaluation system. evaluation software, which runs on a standard windows pc platform, lets the user explore a wide range of options. the output ports can be programmed to be totem-pole or open- drain, and outputs can change at either the acknowledge command (bit change) or the stop command (global change). each output port can set to led on, led off, led controlled by its own pwm ,or led controlled by its own pwm and the group pwm. nxp pca9633 daughter card OM6282
block diagram of the pca9633 daughter card demonstration platforms the OM6282 daughter card can be used with the windows based om6275 i2c 2005-1 demo board, the micro-controller based om6299 industrial reference design, or stand alone in the users application. additional information to order the daughter card or demonstration platforms, visit www.digikey.com. for downloadable support tools, visit www.nxp.com/i2clogic for questions, email i2c.support@nxp.com. extensive programmability the daughter cards wide array of i/o commands and programmable pins makes development more flexible and increases design options. the output pins can be programmed to totem-pole (10-ma source, 25-ma sink) or open-drain (25-ma sink) with a controlled edge-rate output structure. totem-pole is the power-up default. the output enable pin (oe) three-states all outputs. output polarity can be programmed via the i 2 c-bus. the address select switch makes it possible to daisy-chain multiple pca9633 devices together for evaluation. when multiple pca9633 devices are on the same bus, the gpio all call command simultaneously programs multiple devices with the same parameters, even if they have different i 2 c-bus addresses. there are also 3 sub-addresses that can be used to program multiple devices with the same instruction (e.g. turn on all red leds). the software reset sets the device to its power-up default state. ?2008 nxp b.v. all rights reserved. reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. th e information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. no liability will be accepted by the publisher for any consequence of its use. publication there of does not convey nor imply any license under patent- or other industrial or intellectual property rights. www.nxp.com date of release: october 2008 document number: 9397 750 xxxxx printed in the usa pca9633 4-bit led driver rgba led s oe a5 sd a scl led0 ao a1 a2 a3 a4 a5 a6 oe oe and address select a6 a4 a3 a2 a1 a0 led2 led1 led3 www.nxp.com/i2clogic
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