參數(shù)資料
型號: 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
文件頁數(shù): 68/94頁
文件大小: 541K
代理商: S1D13305F00A
64
EPSON
S1D13305 Series
Technical Manual
Figure 55. Flowchart for busy flag checking
Read Status Flag
D6 = 0?
Data Input
Data Input ?
No
Yes
STATUS FLAG
<Timing To Be Observed For Avoiding S1D 13305 Series Write Noise>
Precaution on the write timing to VRAM
The allowable writing duration is since “5
× 9 × tOSC” has elapsed (tOSC = 1/fOSC: a cycle of the
oscillation frequency) from the positive going edge of LP up to {(TCR) – (C/R) – 7}
× 9 × tOSC.
Currently employed D6 status flag reading method does
not identify the timing when the read D6 = Low took
place. Thus, negative going edge of LP should be used as
the interrupt signal when implementing the writing in
above timing.
If you try to access the display memory in other timing
than the above, flickering of the display screen will result.
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