
WFP6852A
January 27, 2000
Rev. 0.02
1999 Winbond Electronics Corporation
1
Advanced Product Information
Signal Driver
300-Channel, 6-Bit Signal Driver for
TFT-LCD Applications
1.
PRODUCT DESCRIPTION
The WFP6852A is a 6-bit, 300-channel signal
driver designed for low power SVGA TFT-LCD
panel applications. The WFP6852A’s form factor
has been optimized for low-cost, bending TCP
applications.
The input pin order and timing are
compatible with drivers from TI and NEC.
The WFP6852A’s internal architecture includes a
resistor-string DAC with the value of the individual
resistor segments weighted to reduce signal
driver power dissipation by as much as 20% to
60% when compared to non-weighted resistor
string DAC architectures.
The input pin order and timing of the WFP6852A
allows the panel maker to get the benefits of the
Winbond architecture (such as superior uniformity,
low power dissipation, and 2.5V interface for
reduced EMI and power) while maintaining multi-
source compatibility.
The WFP6852A also provides input selectable
double edge clocking and data inversion features.
These may be employed in applications that don’t
need TI/NEC compatibility.
300
Gate
Driver
300
300
800x600
Gate
Driver
Data
...
.
WFP6131A
GSR
LCD
Control
ASIC
WFP6852A
Signal Driver
WFP6852A
Signal Driver
WFP6852A
Signal Driver
262,144-Color LCD
from
Graphics
Controller
Control
11 V11-V0
18 D25-D20 D15-D10 D05-D00
2 LP, DCLK
VDDA,VDDD, GND
3
Features:
Weighted Rstring architecture
High speed data transfer of up to 65MHz at
VDDD = 3.3V
Data Inversion and Double Clock feature
Extremely low output error of 8mV (max) at
VDDA = 3.3V
Input pin compatible with uPD16640x family
and TMS57485
Logic Power Supply Range: 2.3V-2.7V
3.0V-3.6V
Analog Power Supply Range: 3.0V-5.5V