VRC4171A Datasheet PDF - NEC
| Part Number | VRC4171A | |
| Description | Graphics Display Controller | |
| Manufacturers | NEC | |
| Logo |  |
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Application Note
Description
Features
Using the VRC4171A Graphics Display Controller
with the VR41xx Evaluation Board
August 1999
The VR41xxTM 32-/64-bit MIPS® RISC microprocessors are members of NEC’s
VR4100TM family of devices for Windows® CE handheld computer applications. The
VRC4171TM companion chip for the VR41xx contains a PC CardTM controller, additional
general-purpose I/Os, and an LCD graphic display controller. This application note
explains operation of the VRC4171A’s LCD graphic display controller and connection of
graphic displays to the VR41xx evaluation board.
! Color screen up to 64K shades (1, 2, 5, 6, 8,16 bits/pixel)
! Monochrome screen up to 16 gray scales (1, 2, 4 bits/pixel)
! On-chip color palette RAM (256 x 18 bits) and on-chip hardware cursor (32 x 32 x 2)
! Standard resolutions up to 640 x 480 for 16-bit color
! 600 x 800 for 8-bit color
! STN, DSTN, and TFT LCD panels
! Analog CRT interface (D/A converter required for analog CRT and analog TFT)
The evaluation board includes an on-board digital-to-analog (D/A) converter for analog
TFT and CRT interfaces, 44-pin LCD panel connector (N36), and four voltages for
LCD panel power (Table 1).
Table 1. LCD Voltages
Voltage
PANVDD
Description
LCD panel buffer type
PANBKL
PANVEE
LCD panel VEE bias voltage control
PANVBB
LCD panel VBB bias voltage control
Jumper
JP15
N/A
JP16
JP16
Setting
1-2
2-3
N/A
IN
OUT
Selection
3.3-volt buffer
5-volt buffer
12 volts (fixed)
Positive VEE (default)
15 to 25 volts adjustable
Use VR1 for adjustment
Adjustable to –18 volts
Use VR2 for VBB adjustment
Note: See Figure 1 for jumper and resistor locations.
U13843EU3V0AN00
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VRC4171A Graphics Display Controller
To map 16-bit pixel data to an 18-bit TFT panel, R0 and B0 must output logic 0 to the panel. The
origin of the frame buffer is in the upper left of the display area(Table 4)
Table 4. Frame Buffer Pixel Organization
Pixel 00, Pixel 01 . . . . . . . . . . . . . . . . . . . . . . . . . Pixel 639
Pixel 640 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pixel 153000 . . . . . . . . . . . . . . . . . . . . . . . . . . . . Pixel 153599
Table 5. Tested LCD Modules
Panel Type
Vendor Model No.
STN color
STN monochrome
DSTN color
DMTN monochrome
FSTN monochrome
Sharp
Kyocera
ALPS
ALPS
Kyocera
Sharp
Sharp
Samsung
TFT color
Sharp
Sharp
NEC
NEC
NEC
NEC
NEC
NEC
LM32C04P
KCB6424ASTT
LFH8P4021A
LRH9J504XA
KCS6448MSTT-X1
LM64C21P
LM4Q30TA
UG-24U01-WGT3-B
LQ039Q2DS01
LQ64D431
NL6448AC20-06
NL6448AC33-18
NL6448AC33-18A
NL6448AC33-24
NL6448AC33-27
NL8060AC26-04
Reference Display
Format
Table 8
Table 14
Table 9
Table 11
Table 13
Table 15
Table 16
Table 18;
Table 19
Table 20
Table 21
Table 22
Table 23
Table 23
Table 23
Table 23
Table 24
320 x 240
640 x 240
240 x 320
320 x 240
640 x 480
640 x 480
320 x 240
240 x 320
320 x 240
640 x 480
640 x 480
640 x 480
640 x 480
640 x 480
640 x 480
800 x 600
Active
Viewing
Area
5.5"
6.5”
3.8”
3.8"
7.2”
8.0”
4.7”
3.8”
3.8”
10.4”
6.5”
10.4"
10.4
10.4
10.4”
10.4”
5
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Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for VRC4171A electronic component. |
| Information | Total 30 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ VRC4171A.PDF Datasheet ] | |
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