- 您现在的位置：买卖IC网 > PDF目录30743 > LM1253AAE/NA (NATIONAL SEMICONDUCTOR CORP) ON-SCREEN DISPLAY IC, PDIP28 PDF资料下载
参数资料
| 型号： | LM1253AAE/NA |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 画面叠加 |
| 英文描述： | ON-SCREEN DISPLAY IC, PDIP28 |
| 封装： | 0.600 INCH, PLASTIC, DIP-28 |
| 文件页数： | 28/61页 |
| 文件大小： | 1671K |
| 代理商： | LM1253AAE/NA |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页当前第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页第55页第56页第57页第58页第59页第60页第61页
Display Page RAM (Continued)
The skip-line parameters associated with the next row must always be written to the location immediately after the preceding
row’s row-end character. The only exception to this rule is when a window-end character (value 00h) is encountered. It is
important to note that a row-end character should not precede a window-end character (otherwise the window-end character will
be interpreted as the next row’s skip-line parameters). Instead, the window-end character will both end the row and the window
making it unnecessary to precede it with a row-end character.
The I
2C Format for writing a sequence of display characters is minimized by allowing sequential characters with the same
attribute code to be sent in a string as follows:
Byte #1—I
2C Slave Address
Byte #2 — LSB Address
Byte #3 — MSB Address
Byte #4 — Attribute Table Entry to use for the following characters
Byte #5 — First display character, SL parameter, RE or WE control code.
Byte #6 — Second display character, SL parameter, RE or WE control code.
Byte #7 — Third display character, SL parameter, RE or WE control code.
.
Byte #n — Last display character in this color sequence, SL parameter, RE or WE control code to use the associated Attribute
Table Entry.
The Attribute Table Entry (Byte #4, of the above) is automatically associated with each subsequent display character or SL code
written. The following are examples of how the Display Page RAM associates to the actual On-Screen Display Window #1.
EXAMPLE #1:
A 3 X 3 character matrix of white characters on a black background is to be displayed using 2-color character codes:
The actual On-Screen Display of Window #1 is shown in
Figure 41. Note the dotted white lines are not shown on the monitor.
They are shown here to show where the character ends.
Notes:
Every row must begin with an attribute and a SL. Display
Page RAM memory location 8000h will always be asso-
ciated with the SL of row 0 of Display Window #1.
Every row except the last row of a Display Window must
end with an RE character. The character immediately
after an RE character is always the SL value for the next
row.
The last row in a Display Window must be a WE charac-
ter. The WE character must NOT be preceded by an RE
character.
The entire Display Window may be written in a single I
2C
write sequence because the Attribute Table entry (i.e., the
color palette) does not change for the entire Display
Window.
The Attribute Table Entry that is associated with RE and
WE characters are “don’t cares”. In general it is most
efficient just to allow them to be the same value as the
Attribute Table Entry associated with the previous display
character.
The colors of the characters and background can be
stored in a single location in the 2-color attribute table, in
location ATT0.
The data shown in
Table 9 is sent to the LM1253A in one
I
2C transmission.
DS101265-51
FIGURE 41. Example 1 OSD
LM1253A
www.national.com
34
相关PDF资料 |
PDF描述 |
|---|---|
| LM1267NA/NOPB | 3 CHANNEL, VIDEO PREAMPLIFIER, PDIP24 |
| LM1269NA/NOPB | 3 CHANNEL, VIDEO PREAMPLIFIER, PDIP24 |
| LM1276AAA/NA | 1 CHANNEL, VIDEO PREAMPLIFIER, PDIP28 |
| LM1279AN/NOPB | 3 CHANNEL, VIDEO AMPLIFIER, PDIP20 |
| LM1279N/NOPB | 1 CHANNEL, VIDEO AMPLIFIER, PDIP20 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LM1253AN | 制造商:NSC 制造商全称:National Semiconductor 功能描述:Monolithic Triple 180 MHz I2C CRT Pre-amp With Integrated Analog On Screen Display (OSD) Generator |
| LM-1256 | 制造商:ROHM 制造商全称:Rohm 功能描述:16 x 16 matrix displays |
| LM-1256_1 | 制造商:ROHM 制造商全称:Rohm 功能描述:16】16 matrix displays |
| LM-1256LB1 | 制造商:ROHM 制造商全称:Rohm 功能描述:16】16 matrix displays |
| LM125AN | 制造商:NSC 制造商全称:National Semiconductor 功能描述:VOLTAGE REGULATORS |
发布紧急采购，3分钟左右您将得到回复。