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參數資料
| 型號： | WFP6540B |
| 廠商： | WINBOND ELECTRONICS CORP |
| 元件分類： | 顯示驅動器 |
| 英文描述： | 258-Channel, 6-Bit Signal Driver for XGA COG（chip-on-glass）TFT-LCDs Applications(用XGA COG TFT型液晶顯示器的258通道的，6位信號驅動器) |
| 中文描述： | LIQUID CRYSTAL DISPLAY DRIVER, UUC305 |
| 封裝： | DIE-305 |
| 文件頁數： | 12/25頁 |
| 文件大小： | 648K |
| 代理商： | WFP6540B |
12
1999 Winbond Electronics Corporation
October 5, 1999
Rev. 0.01
WFP6540B
258-Channel COG Signal Driver for XGA TFT-LCDs
5.
DETAILED PAD DESCRIPTIONS
The following abbreviations are used for pad types in the following sections: (I) input;
(O) output; (I/O) Input/Output, (#) active ‘low’ signal.
Name
Number
Type
Description
LD258_1
9
I
LOAD DIRECTION:
Controls the direction in which the data
is loaded into the Input Register:
When LD258_1 = ‘0’, data is loaded from Channel
V
S1
to V
S258
.
When LD258_1 = ‘1’, data is loaded from Channel
V
S258
to V
S1
.
EIO1#, EIO258#
41,1
I/O
ENABLE IN/OUT
: The EIO1# and EIO258# active ‘low’ sig-
nals initiate the loading of data into the Input Register of the
WFP6540B. When one of the EIOx# pads is configured as
an input, the other is configured as an output, with the direc-
tion determined by the LD258_1 input (see Table 5-1). The
EIOx# output pads are designed to be connected to the
EIOx# input pads of adjacent devices to allow a series of
drivers to operate sequentially. When a ‘low’ is applied to the
EIOx# pin configured as an input on the first device in the
series, data is loaded from the three sets of 6-bit Data Inputs
into the first three 6-bit Input-Register locations. On subse-
quent transitions of the DCLK, data continues to be loaded
into the remaining 6-bit Input-Register locations. When the
register is full (258 words), the EIOx# pin configured as an
output goes ‘low’, enabling the next driver. The data load
sequence is summarized in Table 5-1, Figure 5-1 and Figure
5-2.
Table 5-1: Input/Output Selection for EIO1# and EIO258#
LD258_1
Input
EIO1#, EIO258# Functionality
Data Loading Sequence
EIO1#
EIO258#
‘0’
Input
Output
Channel 1 to 258
‘1’
Output
Input
Channel 258 to 1
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