hd66789 Renesas Electronics Corporation., hd66789 Datasheet - Page 31

• Manufacturer Part Number: hd66789
• Description: 528-channel, One-chip Driver For Amorphous Tft Panels With 262,144-color Display Ram, Power Supply Circuit, And Gate Circuit
• Manufacturer: Renesas Electronics Corporation.

HD66789
EPL: Set the polarity of ENABLE pin while using the RGB interface.
The following table shows the relationship between EPL, ENABLE, VLD and RAM access.
EPL
0
0
0
1
1
1
VSPL: Invert the polarity of signal for VSYNC pin.
HSPL: Invert the polarity of signal for HSYNC pin.
DPL: Invert the polarity of signal for DOTCLK pin.
NL4-0: Specify the number of LCD drive raster-rows. The number of drive raster-rows is changeable by 8
multiples. The GRAM address mapping is independent of this setting. Select a number of raster-rows so
that the display size covers the size of a panel.
Rev.0.12, May 09 2003, page 31 of 156
EPL = “0”
EPL =”1”
VSPL = ”0”
VSPL = ”1”
HSPL = ”0”
HSPL = ”1”
DPL = ”0”
DPL = ”1”
ENABLE
0
0
1
0
1
1
: ENABLE = “Low” / Write data to PD17-0.
: ENABLE = “High” / Data write invalid.
: ENABLE = “High” / Write data to PD17-0.
: ENABLE = “Low” / Data write invalid.
: Low active.
: High active.
: Low active.
: High active.
: Data are read in synchronization with the rising edge of the DOTCLK.
: Data are read in synchronization with the falling edge of the DOTCLK.
0
1
*
*
0
1
VLD
RAM write
Valid
Invalid
Invalid
Invalid
Valid
Invalid
RAM address
Updated
Updated
Hold
Hold
Updated
Updated
Preliminary