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HD64645のメーカーはHitachi Semiconductorです、この部品の機能は「LCTC (LCD Timing Controller)」です。 |
部品番号 | HD64645 |
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部品説明 | LCTC (LCD Timing Controller) | ||
メーカ | Hitachi Semiconductor | ||
ロゴ | |||
このページの下部にプレビューとHD64645ダウンロード(pdfファイル)リンクがあります。 Total 30 pages
HD64645/HD64646
LCTC (LCD Timing Controller)
ADE-207-276(Z)
'99.9
Rev. 0.0
Description
The HD64645/HD64646 LCTC is a control LSI for large size dot matrix liquid crystal displays. The LCTC
is software compatible with the HD6845 CRTC, since its programming method of internal registers and
memory addresses is based on the CRTC. A display system can be easily converted from a CRT to an
LCD.
The HD64646 LCTC is a modified version of the HD64645 LCTC with different LCD interface timing.
The LCTC offers a variety of functions and performance features such as vertical and horizontal scrolling,
and various types of character attribute functions such as reverse video, blinking, nondisplay (white or
black), and an OR function for simple superimposition of character and graphic displays. The LCTC also
provides DRAM refresh address output.
A compact LCD system with a large screen can be configured by connecting the LCTC with the
HD66110ST (column driver) and the HD66113T (common driver) by utilizing 4-bit × 2 data outputs.
Power dissipation has been lowered by adopting the CMOS process.
Features
• Software compatible with the HD6845 CRTC
• Programmable screen size
Up to 1024 dots (height)
Up to 4096 dots (width)
• High-speed data transfer
Up to 20 Mbits/s in character mode
Up to 40 Mbits/s in graphic mode
• Selectable single or dual screen configuration
• Programmable multiplexing duty ratio: static to 1/512 duty cycle
• Programmable character font
1-32 dots (height)
8 dots (width)
1
1 Page Pin Arrangement
HD64645/64646
MD0
MD1
MD2
MD3
MD4
MD5
MD6
MD7
MD8
MD9
MD10
MD11
MD12
MD13
MD14
MD15
VCC1
LD3
LD2
LD1
LD0
LU3
LU2
LU1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
64 RA0
63 RA1
62 RA2
61 RA3
60 RA4
59 GND1
58 G/C
57 AT
56 LS
55 D/S
54 WIDE
53 ON/OFF
52 MODE
51 BLE
50 DB7
49 DB6
48 DB5
47 DB4
46 DB3
45 DB2
44 DB1
43 DB0
42 RD
41 WR
(Top view)
3
3Pages HD64645/64646
Timing Signal
D Clock (DCLK): DCLK inputs the system clock.
M Clock (MCLK): MCLK indicates memory cycle; DCLK is divided by four.
Display Timing (DISPTMG): DISPTMG high indicates that the LCTC is reading display data.
Cursor Display (CUDISP): CUDISP supplies cursor display timing; connect with MD12 in character
mode.
Skew 0 (SK0)/Skew 1 (SK1): SK0 and SK1 control skew timing. Refer to Table 2.
Mode Select
The mode select pins ON/OFF, BLE, AT, G/C, and WIDE are ORed with the mode register (R22) to
determine the mode.
On/Off (ON/OFF): ON/OFF switches display on and off (high = display on).
Blink Enable (BLE): BLE high level enables attribute code “blinking” (MD13) and provides normal/blank
blinking of specified characters for 32 frames each.
Attribute (AT): AT controls character attribute functions.
Graphic/Character (G/C): G/C switches between graphic and character display mode (graphic display
when high).
Wide (WIDE): WIDE switches between normal and wide display mode (high = wide display, low =
normal display).
Large Screen (LS): LS controls a large screen. LS high provides a data transfer rate of 40 Mbits/s for a
graphic display. Also used to specify 8-bit LCD interface mode. For more details, refer to Table 10.
Dual/Single (D/S): D/S switches between single and dual screen display (dual screen display when high).
Mode (MODE): MODE controls easy mode. MODE high sets duty ratio, maximum number of rasters,
cursor start/end rasters, etc. (Refer to Table 8.)
Table 1 LCD Up Panel Data and LCD Down Panel Data
Pin Name
LU0–LU3
LD0–LD3
4-Bit Data
Data output
Disconnected
Single Screen
8-Bit Data
Data output
Data output
Dual Screen
Data output for upper screen
Data output for lower screen
6
6 Page | |||
ページ | 合計 : 30 ページ | ||
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PDF ダウンロード | [ HD64645 データシート.PDF ] |
データシートを活用すると、その部品の主な機能と仕様を詳しく理解できます。 ピン構成、電気的特性、動作パラメータ、性能を確認してください。 |
部品番号 | 部品説明 | メーカ |
HD64645 | LCTC (LCD Timing Controller) | Hitachi Semiconductor |
HD64645F | LCTC (LCD Timing Controller) | Hitachi Semiconductor |
HD64646 | LCTC (LCD Timing Controller) | Hitachi Semiconductor |
HD64646FS | LCTC (LCD Timing Controller) | Hitachi Semiconductor |