STANDBY

NSTBY = H

and

NRST = H

RESET

INTERNAL

STARTUP

SEQUENCE

NRST = L

or

POR = H

NSTBY = L

and

NRST = H

EN_BOOST = H*

THSD = H

~10 ms Delay

BOOST STARTUP

NSTBY = H

and

NRST = H

NSTBY = L

and

NRST = H

EN_BOOST = L*

~10 ms Delay

NORMAL

MODE

EN_BOOST

rising edge*

* THSD = L

V

LP3936

www.ti.com

SNVS259D – NOVEMBER 2003 – REVISED MAY 2013

NORMAL: During NORMAL mode the user controls the chip using the Control Registers. The registers can be

written in any sequence and any number of bits can be altered in a register in one write.

Figure 3. Modes of Operation Flowchart

Logic Interface Characteristics (1.8V

≤ V

(5)

Symbol

Parameter

Conditions

Min

Typ

Max

Units

LOGIC INPUTS DI, SCL, NRST, RGB_EN, CS, MW_SEL

Input Low Level

0.5

V

Input High Level

V

Logic Input Current

−1.0

1.0

µA

Clock Frequency

400

kHz

MicroWire Mode

8

MHz

LOGIC OUTPUTS DO, CS

Output Low Level

0.3

0.6

V

Output High Level

V

Output Leakage Current

1.0

µA

(5)

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