參數資料
型號： LM1276AAA/NA
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類： 音頻／視頻放大
英文描述： 1 CHANNEL, VIDEO PREAMPLIFIER, PDIP28
封裝： PLASTIC, DIP-28
文件頁數： 24/50頁
文件大?。?/td> 6075K
代理商： LM1276AAA/NA
TWO BYTE COMMUNICATION MODE
The Two Byte Communication mode allows different attribute and character codes to be sent within one transmission without
stopping. The entire 512-character Page ROM is also fully accessible in this mode, without the need to stop and restart transmission.
The attribute byte is shown in Table 17, and the sequence of transmitted bytes is shown in Table 18. Either another attribute &
character code pair or a STOP must follow after each character code. The Page RAM address is automatically incremented just
as in the Auto Attribute mode above.
TABLE 17. Two Byte Communication Mode
ATTRIBUTE Byte
X
0
1
CC[8]
ATT[3:0]
TABLE 18. Sequence of Transmitted Bytes
HALF RANDOM ADDRESS MODE
The Half Random Address mode allows different attribute and character codes to be sent within one transmission in the same way
as the Two Byte Communication mode. The entire 512-character Page ROM is fully accessible in this mode, without the need to
stop and restart transmission. The advantage of Half Random Addressing over the Two Byte mode is that the Page RAM addresses
do not have to be written to in a sequential order. However, the Page RAM addresses cannot be entirely random, as they must be
within one half of the Page RAM. A new transmission must be restarted to switch to another half of the Page RAM. The Page RAM
address is not automatically incremented in this mode. This mode is very useful for modifying character codes and attributes in
the first 256 locations of the Page RAM. The attribute byte is shown in Table 19, and the sequence of transmitted bytes is shown
in Table 20. Either another LSB address & attribute & character code or a STOP must follow after each character code.
TABLE 19. Half Random Address Mode
ATTRIBUTE Byte
X
1
0
CC[8]
ATT[3:0]
TABLE 20. Sequence of Transmitted Bytes
FULL RANDOM ADDRESS MODE
The Full Random Address mode is very similar to the Half Random Address mode. However, the advantage is that the Page RAM
addresses can now be entirely random. There is no longer a restriction to only one half of the Page RAM. The Page RAM address
is not automatically incremented in this mode. This is very useful for modifying character codes and attributes anywhere in the
Page RAM without starting a new transmission sequence. The Full Random Address mode is the most flexible mode of transmis-
sion. The attribute byte is shown in Table 21, and the sequence of transmitted bytes is shown in Table 22. Either another LSB
address & MSB address & attribute & character code or a STOP must follow after each character code.
TABLE 21. Full Random Address Mode
ATTRIBUTE Byte
X
1
CC[8]
ATT[3:0]
TABLE 22. Sequence of Transmitted Bytes
www.national.com
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200969 Version 2 Revision 4
Print Date/Time: 2011/07/11 11:20:12
LM1276
相關PDF資料
PDF描述
LM1279AN/NOPB 3 CHANNEL, VIDEO AMPLIFIER, PDIP20
LM1279N/NOPB 1 CHANNEL, VIDEO AMPLIFIER, PDIP20
LM136A-2.5MD8 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 5 V, UUC
LM136A-5.0MW8 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 5 V, UUC
LM136A-5.0MD8 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 5 V, UUC
相關代理商/技術參數
參數描述
LM1279 制造商:NSC 制造商全稱:National Semiconductor 功能描述:110 MHz RGB Video Amplifier System with OSD
LM12791DL WAF 制造商:Texas Instruments 功能描述:
LM1279A 制造商:未知廠家 制造商全稱:未知廠家 功能描述:
LM1279AN 功能描述:IC AMP RGB VIDEO SYSTEM 20-DIP RoHS:否 類別:集成電路 (IC) >> 線性 - 放大器 - 視頻放大器和頻緩沖器 系列:- 標準包裝:1,000 系列:- 應用:驅動器 輸出類型:差分 電路數:3 -3db帶寬:350MHz 轉換速率:1000 V/µs 電流 - 電源:14.5mA 電流 - 輸出 / 通道:60mA 電壓 - 電源，單路/雙路(±):5 V ~ 12 V，±2.5 V ~ 6 V 安裝類型:表面貼裝 封裝/外殼:20-VFQFN 裸露焊盤 供應商設備封裝:20-QFN 裸露焊盤（4x4） 包裝:帶卷 (TR)
LM1279DL WAF 制造商:Texas Instruments 功能描述:
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