H838532H datasheet(403/508 Pages) RENESAS

Part #	H838532H

Description	16-Bit Single-Chip Microcomputer H8 Family / H8/300H Super Low Power Series

PDF	508 Pages

Scroll/Zoom	100%

Manufacturer	RENESAS [Renesas Technology Corp]

Direct Link	http://www.renesas.com

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403 / 508 page

Section 13 LCD Controller/Driver

Rev. 1.00 May 30, 2008 Page 383 of 484

REJ09B0436-0100

e. As can be seen from the above description, the capacitances and charging/discharging periods

of the capacitors are determined by the current dissipation of the LCD panel used. The

charging/discharging periods can be selected with bits CDS3 to CDS0.

f. The actual capacitor capacitances and charging/discharging periods must be determined

experimentally in accordance with the current dissipation requirements of the LCD panel. An

optimum current value can be selected, in contrast to the case in which a direct current flows

constantly in the built-in split-resistance.

V1 potential

V2 potential

V3 potential

Charging

period Tc

Discharging

period Tdc

Vd1

Vd2

Vd3

Voltage drop

associated with

discharging due

to LCD panel

driving

×2/3

×1/3

Power supply voltage fluctuation in 1/3 bias system

Figure 13.10 Example of Low-Power-Consumption LCD Drive Operation

H838532H Datasheet(PDF) 403 Page - Renesas Technology Corp