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PDF HD66787 Data sheet ( Hoja de datos )
| Número de pieza | HD66787 | |
| Descripción | 528-Channel / One-Chip Driver for Low Temperature Poli-Si TFT Panels | |
| Fabricantes | Renesas Technology | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de HD66787 (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
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Preliminary
HD66787
528-channel, One-chip Driver
with 262,144-color Display RAM and Power Supply Circuit
for Low-temperature Poli-Si TFT (LTPS-TFT) Panels
with Incorporated Gate Drivers
REJxxxxxxx-xxxx
Rev.0.22
10 June, 2003
Description ......................................................................................................... 5
Features ......................................................................................................... 6
Block Diagram .................................................................................................... 7
Pin Functions ...................................................................................................... 8
PAD Arrangement............................................................................................... 15
PAD Coordinate.................................................................................................. 16
BUMP Arrangements (T.B.D.) ........................................................................... 18
Block Function.................................................................................................... 19
1. System Interface ............................................................................................................... 19
2. External Display Interface ................................................................................................ 20
3. Bit Operations ................................................................................................................... 20
4. Address Counter (AC) ...................................................................................................... 20
5. Graphics RAM (GRAM) .................................................................................................. 20
7. Timing Generator.............................................................................................................. 20
8. Oscillation Circuit (OSC) ................................................................................................. 21
9. LCD Driver Circuit........................................................................................................... 21
10.LCD Drive Power Supply Circuit..................................................................................... 21
GRAM Address MAP......................................................................................... 22
Instructions ......................................................................................................... 29
Outline ................................................................................................................................... 29
Instruction Descriptions ......................................................................................................... 30
Index ...................................................................................................................................... 30
Status Read ............................................................................................................................ 31
Start Oscillation (R00h) ......................................................................................................... 31
Rev.0.22, May.23.2003, page 1 of 159
1 page  
HD66787
Preliminary
Description
The HD66787 handles 262,144 TFT colors and can drive a TFT color liquid crystal display of
176RGB x 240 dots with an incorporated RAM compliant to a graphics display of 176 RGB x 240 dots at
maximum, a 528-channel source driver, and a power supply circuit. The HD66787 generates signals to
control panel-integrated gate circuit to drive a TFT panel with incorporated gate driver with a single chip.
The HD66787’s bit-operation functions, 8/9/16/18-bit high-speed bus interface, and high-speed RAM-write
functions enable efficient transfer of data and high-speed data update on a graphics RAM. The HD66787
incorporates 6/16/18-bit RGB interface (VSYNC, HSYNC, DOTCLK, ENABLE, and PD 17 to 0) and
VSYNC interface (system interface + VSYNC) as an interface for moving picture display. With a window
address function that facilitates the moving picture display in an arbitrary area and simultaneous display of
moving pictures and the contents of the internal RAM, the HD66787 enables moving picture display not
constrained by the still picture area. Accordingly, the data transmission is reduced to minimum, thereby
saving power consumed by a system as a whole when displaying moving pictures.
The HD66787 supports power-saving operation up to the power supply voltage of 2.4V with a voltage
follower circuit that generate voltage to drive liquid crystal. The HD66787 also incorporates 8-color
display and standby functions that allow precise power control by software. These features make this LSI
the ideal solution for any medium or small sized portable battery-driven products such as digital cellular
phones supporting WWW browsers or small PDA, where long battery life and board size are major concern.
Rev.0.22, May.23.2003, page 5 of 159
5 Page 
HD66787
Signals
SOUT14,13,
12,11
SOUT24,23,
22,21
Number
of Pins
8
I/O
O
Vcom1, Vcom2 2
O
VcomR
1I
VcomH
VcomL
1O
1O
C11+, C11-
2
-
Preliminary
Connected Functions
to
LCD
Level-shift and then output display clocks.
Output pins for SOUT14-11 are arranged on either left or right
side of the chip and pins for SOUT24-21 are arranged on the
other side of the chip. The kinds of output signals can be
selected as shown in the following table with LSEL22-20 and
LSEL12-10 bits and output from both or either one side of
SOUT14-11 and SOUT 24-21 pins. If signals are output from
either one side, halt the operation of unused circuits.
When signals are output from SOUT14-11, SOUT 24-21 pins,
6 different kind of 8 level-shift signals are output at maximum.
The amplitude of level-shift signal is between VGH and VGL.
Pin settings
Level shift signal
LSEL
12
LSEL
22
GND
LSEL
11
LSEL
21
GND
LSEL
10
LSEL
20
GND
SOUT
11
SOUT
21
FLM
SOUT
12
SOUT
22
SFTCLK
SOUT
13
SOUT
23
CL1
SOUT
14
SOUT
24
CL1B
GND GND IOVcc
FLM
SFTCLK CL1
DISPTMG
GND IOVcc GND
FLM
SFTCLK M
CL1B
GND IOVcc IOVcc
FLM
SFTCLK M
DISPTMG
IOVcc GND GND
FLM
DISPTMG CL1
CL1B
IOVcc GND IOVcc
Setting disabled
IOVcc IOVcc GND
Setting disabled
IOVcc IOVcc IOVcc
Halt
(VGL)
Halt
(VGL)
Halt
(VGL)
Halt
(VGL)
TFT
common
electrode
Variable
resistor or
open
Stabilizing
capacitor
Stabilizing
capacitor
or open
Step-up
capacitor
Power supply for TFT common electrode.
When Vcom AC drive is not selected, output the same level of
voltage as VcomL level. When Vcom AC drive is selected,
output the voltage with the amplitude between VcomH and
VcomL. The AC cycle can be set with M signal.
Connect to the TFT common electrode.
Reference voltage for VcomH.
When adjusting VcomH externally, VcomH internal adjusting
circuit must be halted by register setting and place a variable
resistor between VREG1OUT and GND to make an
adjustment. Otherwise, leave open and adjust VcomH by
internal-register setting.
High level of Vcom during Vcom AC drive. Connect to a
stabilizing capacitor.
Vcom voltage when Vcom AC drive is not selected.
Low level of Vcom during Vcom AC drive. Voltage can be
adjusted with internal registers. Connect to a stabilizing
capacitor. When VCOMG bit is set to LOW, a stabilizing
capacitor is not necessary because VcomL output is halted.
Step-up capacitor connection pins for step-up circuit 1. When
the internal step-up circuit is not used, leave open.
Rev.0.22, May.23.2003, page 11 of 159
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet HD66787.PDF ] | |
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