PCA9552 datasheet(9/28 Pages) PHILIPS

Part #	PCA9552

Description	16-bit I2C-bus LED driver with programmable blink rates

Download	28 Pages

Scroll/Zoom	100%

Manufacturer	PHILIPS [NXP Semiconductors]

Direct Link	http://www.nxp.com

Logo

9 / 28 page

PCA9552_5

Product data sheet

Rev. 05 — 9 March 2006

9 of 28

Philips Semiconductors

PCA9552

16-bit I2C-bus LED driver with programmable blink rates

6.4 Pins used as GPIOs

LED pins not used to control LEDs can be used as general purpose I/Os (GPIOs).

For use as input, set LEDn to high-impedance (01) and then read the pin state via the

input register.

For use as output, connect external pull-up resistor to the pin and size it according to the

DC recommended operating characteristics. LED output pin is HIGH when the output is

programmed as high-impedance, and LOW when the output is programmed LOW through

the ‘LED selector’ register. The output can be pulse-width controlled when PWM0 or

PWM1 are used.

6.5 Power-on reset

When power is applied to VDD, an internal Power-On Reset (POR) holds the PCA9552 in

a reset condition until VDD has reached VPOR. At that point, the reset condition is released

and the PCA9552 registers are initialized to their default states. Thereafter, VDD must be

lowered below 0.2 V to reset the device.

6.6 External RESET

A reset can be accomplished by holding the RESET pin LOW for a minimum of tw(rst). The

PCA9552 registers and I2C-bus state machine will be held in their default states until the

RESET input is once again HIGH.

This input requires a pull-up resistor to VDD if no active connection is used.

Similar Part No. - PCA9552

Manufacturer	Part #	Datasheet	Description
NXP Semiconductors	PCA9552	166Kb / 21P	16-bit I2C LED driver with programmable blink rates 2004 Oct 01
	PCA9552	727Kb / 8P	Smart, simple solutions for the 12 most common design concerns August 2011
	PCA9552	442Kb / 28P	16-bit I2C-bus LED driver with programmable blink rates Rev. 5.1 - 25 May 2023
	PCA9552BS	166Kb / 21P	16-bit I2C LED driver with programmable blink rates 2004 Oct 01
	PCA9552BS	442Kb / 28P	16-bit I2C-bus LED driver with programmable blink rates Rev. 5.1 - 25 May 2023

Manufacturer	Part #	Datasheet	Description
NXP Semiconductors	PCA9552	442Kb / 28P	16-bit I2C-bus LED driver with programmable blink rates Rev. 5.1 - 25 May 2023
	PCA9552	166Kb / 21P	16-bit I2C LED driver with programmable blink rates 2004 Oct 01
	PCA9553	155Kb / 26P	4-bit I2C-bus LED driver with programmable blink rates Rev. 06-29 December 2008
	PCA9551	164Kb / 26P	8-bit I2C-bus LED driver with programmable blink rates Rev. 08-31 July 2008
	PCA9551D-T	164Kb / 26P	8-bit I2C-bus LED driver with programmable blink rates Rev. 08-31 July 2008
	PCA9550	149Kb / 26P	2-bit I2C-bus LED driver with programmable blink rates Rev. 05-13 October 2008
	PCA9551	161Kb / 21P	8-bit I2C LED driver with programmable blink rates 2004 Oct 01
	PCA9553	130Kb / 18P	4-bit I2C LED driver with programmable blink rates 2004 Oct 01
	PCA9550D	130Kb / 17P	2-bit I2C LED driver with programmable blink rates 2003 May 02
ON Semiconductor	CAT9552WI	192Kb / 17P	16-Channel I2C-bus LED Driver with Programmable Blink Rate Doc. No. MD-9005 Rev B