Command entering

period

Blank period

CTRL

LED

To Standby

Programmed sequence

Command entering

period

Blank period

CTRL

LED

To Standby

Programmed sequence

Command entering

period

Blank period

CTRL

LED

To Standby

Command entering

period

Blank period

Programmed sequence

CTRL

LED

To Standby

LP5522

www.ti.com

SNVS488A – JUNE 2007 – REVISED MARCH 2013

In non-programmed mode LED is on as long as CTRL is kept high. When CTRL signal is set low device goes

into Standby mode.

RUN ONCE COMMAND

Programmed blinking sequence is performed once after Run Once command. Four rising edges of CTRL signal

within command entering period is interpreted as Run Once command. If CTRL is kept high after command

entering period the programmed blinking sequence starts right after the blank period has elapsed. CTRL signal

must stay high as long as programmed blinking sequence is executed. If CTRL is set low during execution of

blinking sequence, device goes to standby and execution of blinking sequence is stopped.

If CTRL signal is low after command entering period, Run Once command is executed once the CTRL is set

high.

Copyright © 2007–2013, Texas Instruments Incorporated

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