參數(shù)資料
型號： S1D13700F02A100
元件分類： 顯示控制器
英文描述： 320 X 240 PIXELS CRT OR FLAT PNL GRPH DSPL CTLR, PQFP64
封裝： LEAD FREE, TQFP-64
文件頁數(shù)： 57/108頁
文件大?。?/td> 1373K
代理商： S1D13700F02A100
4: FUNCTION DESCRIPTION
S1D13700 Technical Manual
EPSON
47
4.1.2
Character Generator (CG)
(1) Features of each character generator
1 Internal character generator
The internal character generator is effective for a minimum display system consisting of the
S1D13700, display memory (data RAM), LCD unit, single-chip MPU, and a power supply. Moreover,
because the internal character generator includes CMOS mask ROM, it is very advantageous when low
power consumption is desired.
qCharacter font
qNumber of characters
JIS-compliant 160 characters
qCombined use with CG RAM possible (up to 64 characters)
qProcessing of the character eld space part
The S1D13700 automatically sets spaces in the range of 8 x 16 dots maximum.
2 CG RAM
CG RAM as a graphic generator allows any desired character font to be dened by the user. Moreover,
because the MPU can alter address mapping in the display memory space can be altered as required,
unused portions of display memory can be effectively utilized.
qCharacter font
8 x 8 dots maximum <M2 = 0>
8 x 16 dots maximum <M2 = 1>
qNumber of characters
Up to 64 characters when used in combination with CG ROM
Up to 256 characters when used only in F000H to FFFFH
qDened area of CG RAM in the display memory space
CG RAM (maximum 64 characters) that can be used in combination with CG ROM can be allo-
cated to any desired contiguous addresses.
CG RAM (maximum 65 characters or more) that cannot be used in combination with CG ROM
must be allocated to xed addresses F000H through FFFFH. When 193 characters or more must
be dened in this xed address area, set SAG = F000H and M1 = 0.
(2) Concept of how character generator banks are set
Because the character codes handled by the S1D13700 consist of 8 bits, the number of discrete characters
that can be displayed simultaneously is limited to a maximum of 256. The CGRAM ADR command can
be used to switch banks, however, thus extending the number of usable characters as shown below.
CG RAM 1
CG RAM 2
CG RAM 3
CG RAM n
CG RAM 1
CG RAM 2
CG RAM 3
CG RAM n
MO=0
SAG
MO=1
Basic CG space
(8 x 16 pixels x 256
characters max)
(8 x 16 pixels x 256
characters max)
CG ROM
CG RAM
(5 x 7 pixels x 160
characters max)
(8 x 16 pixels x 64cha)
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