HD66781 Datasheet, PDF (9/196 Pages) Renesas Technology Corp – 720-channel Source Driver for a-Si TFT/Low Temperature Poly-Si TFT Panels with 262,144-color display RAM

HD66781
Preliminary
Pin Functions
Signals
IM3~1,
IM0/ID
Number of I/O
Pins
4
I
CS*
1
I
RS
1
I
WR*/SCL 1
I
RD*
1
I
DACK*
1
I
DB0/SDI 1
I/O
Connected Functions
to
GND or
Vcc1
Pins to select an interfacing mode with MPU.
IM3 IM2 IM1 IM0 MPU-Interface Mode DB Pins
Colors
0
0
0
0
Setting disabled
-
-
0
0
0
1
Setting disabled
-
-
0
0
1
0
80-system 16-bit
interface
DB17-10, 65,536
DB8-1 Note 1)
0
0
1
1
80-system 8-bit interface
(Big-endian)
DB17-10
65,536
Note 2)
0
1
0
*
Serial peripheral
interface (SPI)
DB1-0 65,536
0
1
1
0
Setting disabled
-
-
0
1
1
1
80-system 8-bit interface
(Little-endian)
DB17-10
65,536
Note 2)
1
0
0
0
Setting disabled
-
-
1
0
0
1
Setting disabled
-
-
1
0
1
0
80-system 18-bit
interface
DB17-10 262,144
1
0
1
1 80-system 9-bit interface DB17-9 262,144
1
1
*
*
Setting disabled
-
-
Note 1) 262,144 colors available (max.) in 2-transfer mode.
Note 2) 262,144 colors available (max.) in 3-transfer mode.
MPU
Select the HD66781.
Low: the HD66781 is selected and is accessible
High: the HD66781 is not selected and is inaccessible
MPU
MPU
Select the register.
Low: Index/status registers
High: Control registers
Write strobe signal in the 80-system bus interface
Write data at the “Low” level.
In the Serial Peripheral Interface, a synchronizing clock signal.
MPU
Read-strobe signal in the 80-system bus interface
Read data at the “Low” level.
MPU
Select the HD66781 in the DMA transfer single address mode.
Low: Select the HD66781 (Accessible)
High: Not Select the HD66781 (Inaccessible)
MPU
18-bit parallel bi-directional data bus.
8-bit bus: DB17-DB10
9-bit bus: DB17-DB9
16-bit bus: DB17-DB10 and DB8-DB1
18-bit bus: DB17-DB0
Serial data input pin (SDI) in the Serial Peripheral Interface
mode to input data on the rising edge of SCL signal.
Unused
pins
-
IOVcc
IOVcc
-
IOVcc
Vcc1
IOVcc
Rev.0.5, July.31.2003, page 9 of 196