HD66789 Datasheet, PDF (7/156 Pages) Renesas Technology Corp – 528-channel, One-chip Driver for Amorphous TFT Panels with 262,144-color display RAM, Power Supply Circuit, and Gate Circuit

HD66789
Block Diagram
Preliminary
Vcc
Index
(IR)
Control
register (CR)
ENABLE HSYNC
PD0~17 DOTCLK VSYNC
18
External display interface
VSYNC, HSYNC, DCLK, ENABLE
PD17-0
OSC1 OSC2
CPG
IM3-1,
IM0/ID
7 16
18
Address
counter
(AC)
CS*
VLD
RS
WR*/SCL
RD*
DB0/SDI, 18
DB1/SDO,
~DB17
RESET*
TEST1
TEST2
TS7-0
System Interface
-18 bits
-16 bits
- 9 bits
- 8 bits
- clock
synchronization
serial (SPI)
- 3-transmission
mode
18
Bit operation
18
18 _{Read data}
latch
16
18
Write data
latch
18
72
Timing generation
circuit
M
VGH,
VGL
G1
~ G240
VciLVL
Vci
VciOUT
Vci1
VLOUT1
DDVDH
VLOUT2
VGH
VLOUT3
VGL
VLOUT4
VCL
Voltage
Adjustment
circuit
Graphics RAM
(GRAM)
95,040 bytes
Step-up
circuit 1
Power supply circuit
Step-up
circuit 2
VREG1
OUT
Vcom
γ _{Adjustment circuit}
Grayscale voltage
generation circuit
VcomL Vcom
VREG1OUT _VcomH
VTEST
VGS VMONI
V0P,V0N,
V31P,V31N
V0-31
S1
~ S528
Rev.0.12, May 09 2003, page 7 of 156