参数资料
型号: M34552M8H-XXXFP
元件分类: 微控制器/微处理器
英文描述: 4-BIT, MROM, 6 MHz, MICROCONTROLLER, PQFP48
封装: 7 X 10 MM, 0.65 MM PITCH, PLASTIC, QFP-48
文件页数: 18/143页
文件大小: 0K
代理商: M34552M8H-XXXFP
9: DISPLAY BUFFER
1-102
EPSON
S1D13505F00A HARDWARE FUNCTIONAL
SPECIFICATION (X23A-A-001-12)
9.1 Image Buffer
The image buffer contains the formatted display mode data – see “Display Mode Data Formats”.
The displayed image(s) could take up only a portion of this space; the remaining area may be used
for multiple images – possibly for animation or general storage. See “Display Conguration” on
page 1-103 for the relationship between the image buffer and the display.
9.2 Ink/Cursor Buffers
The Ink/Cursor buffers contain formatted image data for the Ink or Cursor. There may be several
Ink/Cursor images stored in the display buffer but only one may be active at any given time. See
9.3 Half Frame Buffer
In dual panel mode, with the half frame buffer enabled, the top of the display buffer is allocated to
the half-frame buffer. The size of the half frame buffer is a function of the panel resolution and
whether the panel is color or monochrome type:
Half Frame Buffer Size (in bytes) = (panel width
× panel length) * factor / 16
where factor
= 4 for color panel
= 1 for monochrome panel
For example, for a 640
× 480 color panel the half frame buffer size is 75K bytes. In a 512K byte dis-
play buffer, the half-frame buffer resides from 6D400h to 7FFFFh. In a 2M byte display buffer, the
half-frame buffer resides from 1ED400h to 1FFFFFh.
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