ST7713 datasheet(94/159 Pages) SITRONIX

94 / 159 page

ST7713

Ver 1.6

2008-05

9.20.2 Functionality 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 the display module is still running and meets functionality requirements.

The internal function (= the display controller) is comparing, if the display module is still meeting functionality requirements

(only Booster voltage level). If functionality requirement is met, there is inverted (= increased by 1) a bit, which defined in

command 10.1.10 “Read Display Self- Diagnostic Result (0Fh)” (= RDDSDR) (The used bit of this command is D6). If

functionality requirement is not same, this bit (D6) is not inverted (= increased by 1).

The flow chart for this internal function is following:

Note: There is needed 120msec after Sleep Out -command, when there is changing from Sleep In –mode to Sleep Out

-mode, before there is possible to check if functionality requirements are met and a value of RDDSDR’s D6 is valid.

Otherwise, there is 120msec delay for D6’s value, when Sleep Out –command is sent in Sleep Out -mode.

Sleep In (10h)

Sleep Out Mode

Sleep In Mode

Sleep Out (11h)

Checks Booster voltage levels

and other functionalities

Is functionality

requirement met?

D6 inverted

Yes

RDDSDR’s D6=0

Power on sequence

HW reset

SW reset

ST7713 数据表(PDF) 94 Page - Sitronix Technology Co., Ltd.