SED1565 Datasheet, PDF (61/87 Pages) Epson Company – Direct display of RAM data through the display data RAM

SED1565 Series
(2) Data Display
End of initialization
Function setup by command input (User setup)
(2) Display start line set *9
(3) Page address set *10
(4) Column address set *11
Function setup by command input (User setup)
(6) Display data write *12
Function setup by command input (User setup)
(1) Display ON/OFF *13
End of data display
Notes: Reference items
*9: Command Description; Display start line set
*10: Command Description; Page address set
*11: Command Description; Column address set
*12: Command Description; Display data write
*13: Command Description; Display ON/OFF
Avoid displaying all the data at the data
display start (when the display is ON) in
white.
(3) Power OFF *14
• In case of SED1565DBB, SED1566DBB, SED1567DBB, SED1568DBB and SED1569DBB,
Optional status
Function setup by command input (User setup)
(20) Power save *15
Reset active (RES pin = “L”)
VDD – VSS power OFF
• In case of other models,
Optional status
Function setup by command input (User setup)
(20) Power save *15
VDD – VSS power OFF
Set the time (tL) from reset active to turning off
the VDD - VSS power (VDD - VSS = 1.8 V) longer
than the time (tH) when the potential of V5 ~ V1
becomes below the threshold voltage
(approximately 1 V) of the LCD panel.
For tH, refer to the <Reference Data> of this
event. When tH is too long, insert a resistor
between V5 and VDD to reduce it.
Set the time (tL) from power save to turning off
the VDD - VSS power (VDD - VSS = 1.8 V) longer
than the time (tH) when the potential of V5 ~ V1
becomes below the threshold voltage
(approximately 1V) of the LCD panel.
• tH is determined depending on the voltage
regulator external resistors Ra and Rb and the
time constant of V5 ~ V1 smoothing capacity C2.
• When an internal resistor is used, it is
recommended to insert a resistor R between
VDD and V5 to reduce tH.
Notes: Reference items
*14: The logic circuit of this IC’s power supply VDD - VSS controls the driver of the LCD power supply
VDD - V5. So, if the power supply VDD - VSS is cut off when the LCD power supply VDD - V5 has
still any residual voltage, the driver (COM. SEG) may output any uncontrolled voltage. When turning
off the power, observe the following basic procedures:
• After turning off the internal power supply, make sure that the potential V5 ~ V1 has become below
the threshold voltage of the LCD panel, and then turn off this IC’s power supply (VDD - VSS).
6. Description of Function, 6.7 Power Circuit
*15: After inputting the power save command, be sure to reset the function using the RES terminal until the
power supply VDD - VSS is turned off. 7. Command Description (20) Power Save
*16: After inputting the power save command, do not reset the function using the RES terminal until the
power supply VDD - VSS is turned off. 7. Command Description (20) Power Save
EPSON
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