UPD161622 NEC, UPD161622 Datasheet - Page 81

• Manufacturer Part Number: UPD161622
• Description: 396 OUTPUT TFT-LCD SOURCE DRIVER
• Manufacturer: NEC

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7.2 Command Explanation
R0
Resistor
D
D
D
D
D
D
7
6
5
4
3
2
Bit
DISP1
DISP0
ADC
DTY
STBY
COLOR
Symbol
This command performs the same output as when all data is 1, independently of the internal
RAM data (white display in the case of normally white).
This command is executed, after it has been transferred, when the next line is output.
0: Normal operation
1: Ignores data of RAM and outputs all data as 1.
This command performs the same output as when all data is 0, independently of the internal
RAM data (black display in the case of normally white).
This command is executed, after it has been transferred, when the next line is output.
0: Normal operation
1: Ignores data of RAM and outputs all data as 0.
Column address direction
This command can be used to select the direction of source driver output. For more detail, refer
to 5.2.3 Column address circuit
This pin selects the partial function.
When partial display mode is selected, partial off area color is displayed by setting partial off area
color register (R19).
The power consumption cannot be reduced with the partial function. To reduce the power
consumption, select the 8-color mode.
This command is executed following transfer from the time the next line data is output.
0: Normal display mode
1: Partial display mode
This bit selects the stand-by function. When the stand-by function is selected, a display OFF
operation is executed and the amplifiers at each output stage and the operation of internal
oscillation circuit are stopped.
However, stand-by control cannot be performed for the gate IC ( PD161640) connected to
function using this bit, set both the regulator for the gate IC and power-supply IC to off and set
the DC/DC converter to OFF. For the sequence, refer to the preliminary product information
machine of the
Note that when releasing stand-by, perform the opposite operation, i.e., after setting the DC/DC
converter to ON and setting the regulators of the gate IC and power-supply IC to ON, execute
the normal operation command.
0: Normal operation
1: Stand-by function
(display read off from RAM, stop both OSC and VCOM, display OFF = entire data is output as 1)
This pin switches the 65,000-color mode and the 8-color mode. When the 8-color mode is
selected, low power supply can be selected in order to stop the amplifier at each output stage.
In the 8-color mode, the value of the MSB of the internal RAM data is used as the color data.
This command is executed following transfer from the time the next line data is output.
0: 65,000-color mode (16 bits/pixels)
1: 8-color mode (3 bits/pixels)
PD161622 and the power-supply IC ( PD161660). Therefore, after executing the stand-by
DISP1 takes precedence over DISP0. When DISP1 = H, DISP0 = H is ignored.
Data Sheet S15649EJ2V0DS
PD161660.
Function
PD161622
81
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