ST7713 datasheet(95/159 Pages) SITRONIX

95 / 159 page

ST7713

Ver 1.6

2008-05

9.20.3 Chip Attachment Detection

Sleep Out-command (See section 10.1.12 “Sleep Out (11h)”) is a trigger for an internal function of the display module,

which indicates, if a chip or chips (e.g. driver, etc.) of the display module is/are attached to the circuit route of a flex foil or

display glass ITO.

There is inverted (= increased by 1) a bit, which is defined in command 10.1.10 “Read Display Self- Diagnostic Result

(0Fh)” (= RDDSDR) (The used bit of this command is D5), if the chip or chips is/are attached to the circuit route of the flex

or display glass. If this chip is or those chips are not attached to the circuit route of the flex or display glass, this bit (D5) is

not inverted (= increased by 1).

The following figure is for reference purposes; how this chip attachment can be implemented e.g. there are connected

together 2 bumps via route of ITO or the flex foil on 4 corners of the driver (chip).

The flow chart for this internal function is following:

Sleep In (10h)

Sleep Out Mode

Sleep In Mode

Sleep Out (11h)

Checks, if chip is attached to route

Is chip attached to routes?

D5 inverted

Yes

RDDSDR’s D5=0

Power on sequence

HW reset

SW reset

Bump

Routing

Between

bumps

Routing

Between

bumps

Substrate of display glass

Through view of driver to bumps

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