Specifications
SED1560 Series
7–50 EPSON
• Data Display
Data display is complete
Initial setup is complete
Function select through the commands (user setup)
Display start line set *13
Page address set *14
Column address set *15
Function select through the command (user setup)
Display ON/OFF *17
Function select through the command (user setup)
Display data write *16
Notes: *13:Refer to the “Display Line Set” in the Command Description (2).
*14:Refer to the “Page Address Set” in the Command Description (3).
*15:Refer to the “Column Address Set” in the Command Description (4).
*16:Refer to the “Display Data Write” in the Command Description (6).
*17:Refer to the “Display ON/OFF” in the Command Description (1).
It is recommended to avoid the all-white-display of the display start data.
• Powering Off *18
Turn V
DD
and V
SS
power
Any state
Function select through the command (user setup)
Power save sequence *19
The time spent for the operations ranging from power
save through powering off (V
DD
– V
SS
= 2.4V) (
t
L
)
must be longer than the time required for V
5
to V
1
go
under the LCD panel threshold voltage (normally 1V).
*
t
H
is determined by time constant of the external
resisters Ra and Rb (for adjusting voltages V
5
to V
1
)
and the smoothing capacitor C2.
* It is recommended to cut
t
L
shorter by connecting a
resistor between V
DD
and V
5
.
Notes: *18:This IC functions as the logic circuit of the power supplies VDD – VSS, and used for controlling the
driver of LCD power supplies V
DD – V5. Thus, if power supplies VDD – VSS are turned off while
voltage is still present on LCD power supplies V
DD – V5, drivers (COM and SEG) may output
uncontrolled voltage. Therefore, you are required to observe the following powering off procedure:
Turn the built-in power supply off, then turn off the IC power supplies (V
DD – VSS) only after making
sure that potential of V
5 – V1 is below the LCD panel threshold voltage level. Refer to the “Supply
Circuit” in the Function Description.
*19:When the power save command is entered, you must not implement reset from RES terminal until V
DD –
V
SS power are turned off. Refer to the “Power Save” in the Command Description.
• Refresh
It is recommended to use the refresh sequence on a regular basis. This sequence, however, must not be turned on as
long as the initial setup, data display or powering off sequence is taking place.
Refresh sequence
Refresh the DDRAM.
Set every command according to the state being selected
(including setup of the default state).