Datasheet

Section 13 LCD Controller/Driver
Rev. 8.00 Mar. 09, 2010 Page 419 of 658
REJ09B0042-0800
13.2.3 LCD Control Register 2 (LCR2)
Bit 7 6 5 4 3 2 1 0
LCDAB — — — CDS3
*
CDS2
*
CDS1
*
CDS0
*
Initial value 0 1 1 — 0 0 0 0
Read/Write R/W — — R/W R/W R/W R/W R/W
Note: * Applies to the H8/38124 Group only. On the H8/38024, H8/38024S, and H8/38024F-ZTAT
Group, these bits are reserved like bit 4.
LCR2 is an 8-bit read/write register which controls switching between the A waveform and B
waveform and removal of split-resistance. Note that removal of split-resistance control is only
implemented on the H8/38124 Group.
Bit 7—A Waveform/B Waveform Switching Control (LCDAB)
Bit 7 specifies whether the A waveform or B waveform is used as the LCD drive waveform.
Bit 7
LCDAB Description
0 Drive using A waveform (initial value)
1 Drive using B waveform
Bits 6 and 5—Reserved
Bits 6 and 5 are reserved; they are always read as 1 and cannot be modified.
Bit 4—Reserved
Bit 4 is reserved; this can only be written with 0.