S1D1 Epson Electronics America, Inc., S1D1 Datasheet - Page 528

• Manufacturer Part Number: S1D1
• Description: LCD Controller-driver With Built-in Character ROM
• Manufacturer: Epson Electronics America, Inc.

S1D15A06 Series
Reset Circuit
When pin goes low, RES or when Reset command is
used, this LSI is initialized.
Initialized states
• Serial interface internal shift register and counter clear
• Power saver mode is entered.
• Display normal
• Page address=0H
• Column address=0H
• Display start line address=set at the first line
• Segment driver direction=normal
• Common driver direction=normal
• Read modify write OFF
• Power control register (D2, D1, D0) = (0, 0, 0)
• V
• Electronic volume register (D4, D3, D2, D1, D0) = (1,
• LCD power supply bias ratio = 1/6 bias (S1D15A06)
• Test mode is released.
12–24
0, 0, 0, 0)
• Oscillation circuit is stopped.
• The LCD power supply circuit is stopped.
• Display OFF
• Display all points ON (Display all points ON ON/
• Segment/common driver outputs go to the V
0
OFF command D0 = "1")
-resistor ratio register (D2, D1, D0) = (0, 0, 0)
level.
SS
EPSON
* Voltage short-circuit across V
When reset is detected, this LSI is set to above initialized
states. However it has no effect on contents of DDRAM.
As seen in “Microprocessor Interface (Reference
Example)”, connect RES pin to the reset pin of the MPU
and initialize the MPU at the same time. The initialization
by RES pin is always required during power-on.
If the control signal from MPU is HZ, an overcurrent
may flow through the LSI. A protection is required to
prevent the HZ signal at the input pin during power-on.
In case the S1D15A06 series does not use the on-chip
LCD power supply circuit, after RES pin is turnd LOW
to HIGH, the external LCD power supply must be
turned on.
as Vo and V
level].
SS
[allowed only when RES pin = LOW
OUT
and V
DD2
Rev. 1.0a
as well