S1D15715 Epson Electronics America, Inc., S1D15715 Datasheet - Page 36

• Manufacturer Part Number: S1D15715
• Description: Liquid Crystal Display =lcd Driver
• Manufacturer: Epson Electronics America, Inc.

S1D15715 Series Technical Manual
6.7 Reset circuit
When the
initial setting state. Indicated below is the initial setting state.
• Serial interface internal shift register and counter clear
• Power saver mode is entered.
• Display normal
• Page address
• Column address
• Display start line address
• Segment driver direction
• Common driver direction
• n-line inversion drive
• Read modify write
• Power control register
• V
• Electronic volume register
• Test mode is released.
* 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.
Because the internal state of the IC becomes inconstant during power on, initialization by
required.
Check that each input pin is controlled after initialization through
If the control signal from MPU has high impedance, an overcurrent may flow through the IC.
A protection is required to prevent high impedance at the input pin during power-on.
30
level].
• Oscillation circuit is stopped.
• LCD power supply circuit is stopped.
• Display OFF
• Display all points ON
• Segment/common driver outputs go to the V
0
-resistor ratio register
____
RES pin is made to the LOW level or when the reset command is used, this LSI will become the
OUT
and V
: (Display all points ON ON/OFF command D0=“1”)
: set at the first line
: OFF
: 0H
: 0H
: normal
: normal
: Cancel
: (D2, D1, D0) = (0, 0, 0)
: (D2, D1, D0) = (0, 0, 0)
: (D4, D3, D2, D1, D0) = (1, 0, 0, 0, 0)
DD
as well as V
SS
EPSON
level.
0
and V
____
RES pin.
SS
[allowed only when
____
RES pin is always
____
RES pin = LOW
Rev.1.0