hd66789 Renesas Electronics Corporation., hd66789 Datasheet - Page 33

• 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.

FLD1-0
HD66789
FLD1
NW5-0: Specify n, the number of raster-rows from 1 to 64 to alternate every n+1 raster-rows when C-
pattern waveform is generated (B/C = 1).
EOR: When EOR = 1 and a C-pattern waveform is generated (B/C =1), an odd/even frame select signal
and an n-raster-row inversion signal are AC-driven. This instruction is available when liquid crystal AC
drive is not made depending on the combination of numbers of LCD drive raster-rows and the value of “n”
of n-raster-row inversion AC drive. For details, see “n-raster-row inversion AC drive”.
B/C: When B/C =0, a field AC waveform is generated. Alternation occurs every frame when driving liquid
crystal. When B/C=1, alternation occurs every n raster-row. For details, see the “n-raster-row Inversion
AC Drive” section.
Entry Mode (R03h)
Compare Register 1 (R04h)
Compare Register 2 (R05h)
The HD66789 modifies write data sent from the microcomputer before writing to GRAM. This enables
high-speed GRAM data update, and reduces the load on the microcomputer software. For details, see the
“Graphics Operation Function” section.
TRI: RAM write data are transmitted in 3 times through 8-bit interface when TRI = 1. When 8-bit
interface mode is not selected, set TRI to 0.
DFM1-0: Specify the data format for the RAM write data transmission when TRI = 1 (8-bit interface mode
only).
Rev.0.12, May 09 2003, page 33 of 156
0
0
1
1
R/W
W
W
W
FLD0
0
1
0
1
RS
1
1
1
DFM1-0 = “10” : 262k mode (6bit x 3 transmissions)
DFM1-0 = “11” : 65k mode (5,6,5 bits transmissions)
IB15 IB14 IB13 IB12 IB11 IB10 IB9
TRI
0
0
Number of Fields
Setting disabled
1 field
Setting disabled
3 fields
DFM1 DFM0
0
0
CP11
0
CP10
BGR
0
CP9
0
0
CP8
0
0
HWM
CP7
0
IB8
CP6
0
0
IB7
0
0
0
IB6
0
0
0
IB5
CP17
I/D1 I/D0 AM
CP5
IB4
CP16 CP15 CP14 CP13 CP12
CP4
IB3
CP3
IB2
LG2 LG1 LG0
CP2
Preliminary
IB1
CP1
IB0
CP0