UPD161622 Datasheet, PDF (82/103 Pages) NEC – 396 OUTPUT TFT-LCD SOURCE DRIVER WITH RAM

Resistor
Bit
R0
D1
D0
R1
D5
D4
D1
D0
R3
D0
µ PD161622
Symbol
LPM
GSM
VSEL
GSEL
LTS
INV
CRES
(2/9)
Function
This bit is used when setting the gate IC (µ PD161640) and power-supply IC (µ PD161660) to
the low-power mode. When the low-power mode is selected, the LPMG pin and the LPMP pin
signals change from low to high (output changes immediately following command execution.).
The LPMG pin must be connected to the LPM pin of the gate IC, and the LPMP pin must be
connected to the LPM pin of the power-supply IC.
0: Normal
1: Low power mode
Sets output of the gate scanning signal during partial display.
When 1 is selected, gate scanning of the line set in the partial non-display area is stopped.
0: Normal mode
1: Stops gate scanning in partial non-display area
Sets the potential of the pre-charge output of the LCD driver.
The maximum/minimum output potential of the pre-charge output is:
0: Power supply voltage (outputs VS and VSS)
1: Maximum output level of internal γ-output adjustment circuit (uses VPH, VNH, VPL, VNL)
IF VSEL = 0, VS or VSS is automatically output as the pre-charge output.
Sets the maximum/minimum output voltage of the γ-correction resistor.
If the internal γ-output adjustment circuit is selected, the maximum/minimum output potential of
the γ-correction resistor is:
0: Supply voltage (outputs VS and VSS).
1: Voltage of internal γ-output adjustment circuit (uses VPH, VNH, VPL, VNL) 8-color mode (3
bits/pixels)
Selects set time of calibration.
The calibration function adjusts the frame frequency by setting time of one line. This command
can select the set time of a line from the following:
0: 1 line time = tcal
1: 1 line time = tcal x 2
(tcal: Calibration set time1 = 1 ÷ Frame frequency ÷ Number of displayed lines)
This bit selects between the line inversion function and the frame inversion function.
The mode selected by this command is executed from the start of the next scan after the gate
scan in progress when this command was executed has completed 176 lines. When the reset
command is input, the INV register is initialized. 0: Line inversion with same line.
0: Line inversion
1: Frame inversion
Command reset function. Be sure to execute this bit after power ON.
Command reset automatically clears this bit following execution (CRES = 01H). Therefore, it is
not necessary to set 0 (select normal operation) again by software. Moreover, since the time
required for the value of this bit to change (1 → 0) following command reset execution is
extremely short, it is not necessary to secure time until the next command is set following
command reset setting.
0: Normal operation
1: Command reset
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Data Sheet S15649EJ2V0DS