hd66420 Renesas Electronics Corporation., hd66420 Datasheet - Page 35

Manufacturer Part Number

hd66420

Description

Ram-provided 160 Channel 4-level Grey Scale Driver For Dot Matrix Graphics Lcd

Manufacturer

Renesas Electronics Corporation.

Datasheet

1.HD66420.pdf (52 pages)

HD66420

Set HOLT bit to 1 (control register 1)

Internal operation stops

Set DTY or GRAY bit to 1 (control register 2)

Oscillator 2 starts working

Wait for oscillation to stabilize

Clear HOLT bit to 0 (control register 1)

Internal operation starts

Figure 21 Procedure for Changing Oscillator