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: 30/61页
文件大小: 1671K
代理商: LM1253AAE/NA
Display Page RAM (Continued)
Notes:
Every row must begin with an attribute and a SL value.
Display Page RAM memory location 8000h will always be
associated with the SL of row 0 of Display Window #1.
If an I
2C transmission finishes without an RE (in the
middle of a row) the first byte sent in the next I
2C trans-
mission is the attribute.
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 data shown in
Table 10 is sent to the LM1253A in five
I
2C transmissions.
TABLE 10. Example 2 I
2C Transmissions
Command
Sent
(hex)
Description
RAM Address of
the Character
or Command
I
2C start condition (See the Micro-Controller Interface Section)
BA
Chip address (See the
Micro-Controller Interface Section)
00
Address LSB
80
Address MSB
00
Use Attribute table 00 for the following characters
02
Skip 2 lines
8000
02
Character “A”
8001
03
Character “B”
8002
04
Character “C”
8003
01
Row end
8004
I2C stop condition (See the
Micro-Controller Interface Section)
I
2C start condition (See the Micro-Controller Interface Section)
BA
Chip address (See the
Micro-Controller Interface Section)
05
Address LSB
80
Address MSB
DS101265-52
FIGURE 42. Example 2 OSD
LM1253A
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