S1D10605 Epson Electronics America, Inc., S1D10605 Datasheet - Page 349
S1D10605
Manufacturer Part Number
S1D10605
Description
S1d15000 Series Lcd Driver With Ram
Manufacturer
Epson Electronics America, Inc.
Datasheet
1.S1D10605.pdf
(612 pages)
- Current page: 349 of 612
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Self-Refresh Function
Setting self-refresh mode
The self-refresh mode functions as follows: if the dis-
played contents do not change, there is no transfer of the
display data from the display controller to the S1D15700.
The S1D15700 automatically detects this and power-
down is displayed.
The S1D15700 is set to the self-refresh mode by main-
taining the shift clock (XSCLK) in the “L” level for 1
horizontal display period (LP signal cycle) after the row
data for 1 line has been input. The S1D15700 checks the
mode (whether or not the mode is changed to the self-
refresh mode) every 1 horizontal display period. During
1 horizontal display period in which XSCL stops work-
ing, the display data is not written into the S1D15700
display RAM.
To stop XSCL, terminate display data (D0 – D3) transfer
from the display controller (because of the power down),
and set XSCL to HIGH or LOW. At this time, the display
control must periodically send the LP, YD, and FR
signals to the S1D15700 the same way as when data is
transferred. The S1D15700 inputs these signals, reads
the display data periodically from the internal display
RAM and refreshes the display.
The display-off function is available in the self-refresh
mode.
Rev. 3.0
EPSON
Canceling self-refresh mode
The self-refresh mode is canceled as follows: The
display controller inputs the shift clock (XSCL) into the
S1D15700 for one horizontal display period or longer.
This should be down with the trailing edge of the LP
signal and in the data transfer timing. After the mode is
canceled, the line data, which has been sent in the
horizontal display period, is written in the display RAM
at the time of the next trailing edge of the LP signal.
If the S1D15700s are connected in cascade format, the
self-refresh modes of all S1D15700s are not canceled
unless the appropriate number of the XSCL clocks for the
cascaded S1D15700s are entered.
S1D15700 Series
9–7
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