S1D13305D00A EPSON [Epson Company], S1D13305D00A Datasheet - Page 70
S1D13305D00A
Manufacturer Part Number
S1D13305D00A
Description
LCD Controller ICs
Manufacturer
EPSON [Epson Company]
Datasheet
1.S1D13305D00A.pdf
(94 pages)
- Current page: 70 of 94
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STATUS FLAG
• Precaution on the write timing to VRAM
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
64
<Timing To Be Observed For Avoiding S1D 13305 Series Write Noise>
The allowable writing duration is since “5 9
oscillation frequency) from the positive going edge of LP up to {(TCR) – (C/R) – 7}
Figure 55. Flowchart for busy flag checking
No
No
EPSON
Read Status Flag
Data Input ?
Data Input
D6 = 0?
t
OSC
above timing.
If you try to access the display memory in other timing
than the above, flickering of the display screen will result.
Yes
Yes
” has elapsed (
t
OSC
= 1/
f
OSC
: a cycle of the
9
S1D13305 Series
Technical Manual
t
OSC
.
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