4
Instructions
Outline
The MOP line is controlled using a standard HD44780 compliant controller. The display is enabled by
pulling
the Chip Enable (CE) pin
high, communication to and from the device is controlled using the
Read/Write (R/W) input, and one of two available 8-bit registers are selected via the Register Select (RS)
line.
Using Register Select, either the Instruction Register (IR)
or Data Register (DR)
is
selected
by
toggling RS low or high respectively.
While executing from the IR, the display will pull the Most Significant Bit of the data bus, DB7, high.
While this Busy Flag (BF) is set, any instructions sent to the unit will be ignored. The status of this flag
and the current position of the Address Counter (AC) can be obtained by performing a read operation on
the instruction register at any time.
Table 3: Register Selection
RS
R/W
Operation
0
0
IR write as an internal operation (display clear, etc.)
0
1
Read busy flag (DB7) and address counter (DB0 to DB6)
1
0
Write data to DDRAM or
CGRAM (DR to DDRAM or CGRAM)
1
1
Read data from DDRAM or CGRAM (DDRAM or CGRAM to DR)
When writing for the DR, one of two locations can be chosen using the AC.
The value provided to the AC
when executing a set address command differentiates these locations.
The AC is automatically
decremented or incremented after a read or a write.
DDRAM provides eighty bytes of display memory
to all displays. Memory outside the bounds of the
display area can be used as general RAM. DDRAM addressing begins at the top left of the display with a
value of 0, addresses then increment from left to right then down once a row is filled.
Table 4: One Line Addressing
Position
1
2
...
80
DDRAM Address
00
01
...
4F
Table 5: Two Line Addressing
Position
1
2
...
40
DDRAM
Address
00
01
...
27
40
41
...
67
Table 6: Four Line Addressing
Position
1
2
...
20
DDRAM
40
Address
00
01
...
13
41
...
53
14
15
...
27
54
55
...
67
CGRAM provides eight
custom
characters that can be created by writing to CGRAM locations then
displayed using the first eight
CGROM
character codes, as seen in the character ROM table below.
Characters are sent to the display by performing a write operation on the DR using the correct character
address within CGROM. Instructions are issued by writing to the IR;
a complete list is available below.
发布紧急采购，3分钟左右您将得到回复。
相关PDF资料
MOP-GL240128D-BYFY
LCD GRAPHIC DISPL 240X128 Y/G BK
MOP-GL24064A-BYFY
LCD MODULE GRAPH 240X64 LED/CTRL
MPF102G
AMP JFET UHF N-CHAN 25V TO-92
MPLEZW-A1-0000-0000E040H
LED EASYWHITE XLAMP 4000K SMD
MPN3404G
DIODE PIN VHF/SW 20V TO92-2
MRF1511NT1
MOSFET RF N-CH PLD-1.5
MRF1513NT1
MOSFET RF N-CH PLD-1.5
MRF1517NT1
MOSFET RF N-CH PLD-1.5
相关代理商/技术参数
MOP-AL204B-BYFY-25E-3IN
功能描述:LCD字符显示模块与配件 20x4 Blk Txt Y/Gr B/G
RoHS:否 制造商:Lumex 显示模式:Transflective 字符计数 x 行:16 x 2 特点: 流体类型:STN 接口: 背景色: 工作温度范围:- 20 C to + 70 C 封装:Bulk
MOP-AL242A-BYFY-25E-3IN
功能描述:LCD字符显示模块与配件 20x4 Blk Txt Y/Gr B/G
RoHS:否 制造商:Lumex 显示模式:Transflective 字符计数 x 行:16 x 2 特点: 流体类型:STN 接口: 背景色: 工作温度范围:- 20 C to + 70 C 封装:Bulk
MOP-AL402A-BYFY-25E-3IN
功能描述:LCD字符显示模块与配件 40x2 Blk Txt Y/Gr B/G
RoHS:否 制造商:Lumex 显示模式:Transflective 字符计数 x 行:16 x 2 特点: 流体类型:STN 接口: 背景色: 工作温度范围:- 20 C to + 70 C 封装:Bulk
MOP-AL404C-BYFY-25E-3IN
功能描述:LCD字符显示模块与配件 40x2 Blk Txt Y/Gr B/G
RoHS:否 制造商:Lumex 显示模式:Transflective 字符计数 x 行:16 x 2 特点: 流体类型:STN 接口: 背景色: 工作温度范围:- 20 C to + 70 C 封装:Bulk
MOP-AV162A-BNNN-01J-3IN
功能描述:真空荧光显示器 - VFD VFD 16x2 Alpha 80x30x11.68mm RoHS:否 制造商:Noritake 产品:Graphic Display Modules 字符计数 x 行: 模块大小 - 宽x高x厚:230 mm x 78 mm x 15 mm 观察区域 - 宽x高:166.25 mm x 41.45 mm 接口: 电压额定值:5 V 工作温度范围:- 40 C to + 85 C 封装:
MOP-AV202C-BNNN-01J-3IN
功能描述:真空荧光显示器 - VFD 20x2 Light Green Txt Blk B/G
RoHS:否 制造商:Noritake 产品:Graphic Display Modules 字符计数 x 行: 模块大小 - 宽x高x厚:230 mm x 78 mm x 15 mm 观察区域 - 宽x高:166.25 mm x 41.45 mm 接口: 电压额定值:5 V 工作温度范围:- 40 C to + 85 C 封装:
MOP-AV204A-BNNN-01J-3IN
功能描述:真空荧光显示器 - VFD 20x4 Light Green Txt Blk B/G
RoHS:否 制造商:Noritake 产品:Graphic Display Modules 字符计数 x 行: 模块大小 - 宽x高x厚:230 mm x 78 mm x 15 mm 观察区域 - 宽x高:166.25 mm x 41.45 mm 接口: 电压额定值:5 V 工作温度范围:- 40 C to + 85 C 封装:
MOP-GL12232B-BGFW-16N-3SN
功能描述:LCD 图形显示模块和配件 122x32 L.Blu Txt Gry/Wht B/G
RoHS:否 制造商:ELECTRONIC ASSEMBLY 产品: 分辨率:128 x 64 流体类型:FSTN Positive 接口: 背光: 背景色:White 工作温度范围:- 20 C to + 70 C 封装:Bulk