22 LCD DRIVER (LCD)
S1C17704 TECHNICAL MANUAL
EPSON
22-15
D[1:0]
DSPC[1:0]: LCD Display Control Bit
Controls the display on the LCD.
Table 22.8.2 LCD Display Control
DSPC[1:0]
LCD display
0x3
All off (static)
0x2
All on (dynamic)
0x1
Normal display
0x0
Display off
(Default: 0x0)
Set DSPC[1:0] to 0x1 to display normally. However, the clock must be supplied in advance (see Section
22.3).
When “Display off” is selected, the drive voltage supply from the LCD system voltage regulator is
disabled and all the V
C1
to V
C5
pins go to V
SS
level.
All on/off display is achieved by directly changing the LCD drive waveform to on or off and it does
not affect the display memory data. The COM pins output a dynamic drive waveform when “All on” is
selected or output a static drive waveform when “All off” is selected. This facility allows the program
to blink screen without altering the display memory data.
DSPC[1:0] is reset to 0x0 (display off) after initial resetting.
DSPC[1:0] is not reset to 0x0 (display off) on execution of a slp command. DSPC[1:0] should be reset
to 0x0 (display off) via software before executing a slp command, since switching to SLEEP mode with
the LCD display left on will degrade the LCD.
Содержание S1C17704
Страница 1: ...TECHNICAL MANUAL S1C17704 CMOS 16 BIT SINGLE CHIP MICROCOMPUTER ...
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