參數(shù)資料
型號： 22505
英文描述： AMD Test Interface Port Board User＇s Manual? 2.62MB (PDF)
中文描述： AMD測試接口端口板用戶手冊？ 2.62MB（PDF格式）
文件頁數(shù)： 39/78頁
文件大小： 2691K
代理商： 22505
Test Interface Port Board User’s Manual
2-15
Table 2-5. I/O Map for 8-Bit Addressing for ASCII Display
Table 2-6. I/O Map for 16-Bit Addressing for ASCII Display
Configuring the LCD
You must set up the LCD for 8-bit operation and 8-digit x 2-line display. The power-
up procedure detailed in “Board Power” on page 1-1 should initialize the LCD and
leave it ready for configuration. For a quick configuration of the LCD, use the
following procedure. If you encounter any problems or need more detailed
information, refer to the Hitachi spec, HD44780U (LCD-II) (Dot Matrix Liquid
Crystal Controller/Driver).
1. To set the LCD to 8-bit operation, 2-line display, and 5x8 dot character font,
write 38h to the ASCII Display–Write Control Instructions address listed in the
tables in “I/O Maps” on page 2-32. This write should clear the LCD screen.
2. To turn on the display and the cursor, write OEh to the ASCII Display–Write
Control Instructions address. After this write, the cursor should appear on the
LCD screen.
Address
Read/Write
Description
30Ch
30Dh
30Eh
30Fh
W
ASCII display—write control instructions
ASCII display—busy flag / address read
ASCII display—write data to LCD
ASCII display—read data
Address
Read/Write
Description
308h
30Ah
30Ch
30Eh
W
ASCII display—write control instructions
ASCII display—busy flag / address read
ASCII display—write data to LCD
ASCII display—read data
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