參數(shù)資料
型號(hào)： S1D13305F00A
元件分類： 顯示控制器
英文描述： 640 X 256 PIXELS CRT CHAR OR GRPH DSPL CTLR, PQFP60
封裝： QFP5-60
文件頁(yè)數(shù)： 58/94頁(yè)
文件大小： 541K
代理商： S1D13305F00A
S1D13305 Series
EPSON
55
Technical Manual
10.2. CG Memory Allocation
Since the S1D13305 series uses 8-bit character codes, it
can handle no more than 256 characters at a time. How-
ever, if a wider range of characters is required, character
generator memory can be bank-switched using the
CGRAM ADR command.
Figure 44. Internal and external character mapping
Note that there can be no more than 64 characters per bank.
Built–in CG ROM
(160 characters,
5
× 7 pixels max)
CG RAM
CG RAM 1
CG RAM 2
CG RAM n
Built-in CG ROM
(160 characters,
5
× 7 pixels max)
CG RAM
CG RAM 1
CG RAM 2
CG RAM n
SAG
CG RAM
ADR
CG ROM
CG RAM
(64 characters max, 8
× 16 pixels max)
(64 characters max, 8
× 16 pixels max)
M0 = 1
Basic CG space
(256 characters,
8
× 16 pixels max)
256 characters max
M1 = 0
256 characters max
M1 = 0
Table 20. Character mapping
Item
Parameter
Remarks
Internal/external character generator selection
M0
1 to 8 pixels
M2 = 0
Character field height
9 to 16 pixels
M2 = 1
Greater than 16 pixels
Graphics mode (8 bits
× 1 line)
Internal CG ROM/RAM select
Automatic
Determined by the
External CG ROM/RAM select
character code
CG RAM bit 6 correction
M1
CG RAM data storage address
Specified with CG RAM ADR
Can be moved anywhere in the
command
display memory address space
192 characters or less
Other than the area of Figure 49
More than 192 characters
Set SAG to F000H and overly
SAG and the CG ROM table
External CG ROM
address
CHARACTER GENERATOR
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