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參數資料
| 型號： | LM1247AAG/NA/NOPB |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 3 CHANNEL, VIDEO PREAMPLIFIER, PDIP24 |
| 封裝： | PLASTIC, DIP-24 |
| 文件頁數： | 21/48頁 |
| 文件大小： | 3141K |
| 代理商： | LM1247AAG/NA/NOPB |
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Building Display Pages (Continued)
Notes:
The black background is Color 0 and the gray foreground is Color 1 which we will store in two-color attribute location 5 at
0x8454–0x8457.
The Enhanced Feature portion will be set to Normal (no blinking, shadowing or button boxes, etc.)
The character codes for “A”, “B”, etc. are from bank 4 of the sample font shown in Figure 29 through Figure 36.
For this example, bank 4 is selected by Bank Select Register 0, and therefore the two upper bits of the character codes are
both 0.
The data shown in Table 18 is sent to the LM1247 in two transmissions, one for the attribute and one for the Page data. Also,
additional data will need to be sent to position the OSD window and turn it on.
Every line must begin with an AC and an SL code. The first location addressed by the Window 1 Start Address register must
always be contain the SL for the first line of display window #1.
Every line except the last line of a display window must end with an EOL code. The character immediately after an EOL is
always the SL value for the next line, unless the window contains just one line.
The last code in a display window must be an EOS character. The EOS must NOT follow an EOL character.
The attributes that are associated with EOL and EOS characters are not used, so it is most efficient just to allow them to be
the same value as the attribute associated with the previous display characters.
See the Microcontroller Interface Section for I
2C compatible start, stop and addressing information.
TABLE 18. Example 1 Data Transmissions
Data Sent
Description
RAM Address
I
2C start condition
0xBA
LM1247 Slave Write Address
0x54
Two-color attribute location 5 address LSB
0x84
Two-color attribute location 5 address MSB
0x00
Attribute Byte 1 of 4
Background (Color 0): Red = 000b, Green = 000b and
Blue = 000b.
Foreground (Color 1): Red = 101b, Green = 101b, Blue
= 101b, and Enhanced Feature = 0000b.
8454
0xDA
Attribute Byte 2 of 4
8455
0x02
Attribute Byte 3 of 4
8456
0x00
Attribute Byte 4 of 4
8457
I
2C stop condition
I
2C start condition
0xBA
LM1247 Slave Write Address
0x00
Address LSB
0x80
Address MSB
0x05
Use Attribute 5 for the following characters
0x00
Skip 0 lines code
8000
0x02
Character “A”
8001
0x03
Character “B”
8002
20048440
FIGURE 25. Example 1 OSD
LM1247
www.national.com
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|---|---|
| LM1253AAE/NA | ON-SCREEN DISPLAY IC, PDIP28 |
| LM1267NA/NOPB | 3 CHANNEL, VIDEO PREAMPLIFIER, PDIP24 |
| LM1269NA/NOPB | 3 CHANNEL, VIDEO PREAMPLIFIER, PDIP24 |
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相關代理商/技術參數 |
參數描述 |
|---|---|
| LM1247DMC/NA | 制造商:Texas Instruments 功能描述: |
| LM124A | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Low Power Quad Operational Amplifiers |
| LM124AD | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:LOW POWER QUAD OPERATIONAL AMPLIFIERS |
| LM124ADR | 制造商:TI 制造商全稱:Texas Instruments 功能描述:QUADRUPLE OPERATIONAL AMPLIFIERS |
| LM124ADT | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Voltage-Feedback Operational Amplifier |
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