SED1520D0A Datasheet, PDF (30/52 Pages) List of Unclassifed Manufacturers – DOT MATRIX LCD DRIVER

4.14.1 – 4.14.1
4.0 Commands
Table 3 Commands
Command
Code
A0 RD WR D7 D6 D5 D4 D3 D2 D1 D0
Function
Turns all display on or off, independently of dis-
play RAM data or internal status.
(1) Display ON/OFF 0 1 0 1 0 1 0 1 1 1 0/1
1: ON
0: OFF (Power-saving mode with static drive on)*
(2)
Display start line
0
1
0
1
1
0
Display Start Address Specifies RAM line corresponding to uppermost
(0–31)
line (COM0) of display.
(3) Set page address 0
1
0
101110
Page
(0–3)
Sets display RAM page in page address register.
(4)
Set column
(segment) address
0
1
0
0
Column Address (0–79)
Sets display RAM column address in column
address register.
(5)
Read status
00 1
Reads the following status:
BUSY 1: Internal operation, 0: Ready
0 0 0 0 ^ADC
1: CW output (forward),
0: CCW output (reverse)
ON/OFF 1: Display off, 0: Display on
RESET 1: Being reset, 0: Normal
(6) Write display data 1 1 0
(7) Read display data 1 0 1
Write Data
Read Data
Writes data from
data bus into
display RAM.
Reads data from
display RAM onto
data bus.
Display RAM location
whose address has been
preset is accessed. After
access, the column
address is incremented
by 1.
Used to invert relationship of assignment
between display RAM column addresses and
(8)
Select ADC
0 1 0 1 0 1 0 0 0 0 0/1 ^{segment driver outputs.}
0: CW output (forward)
1: CCW output (reverse)
Selects normal display or static driving operation.
(9)
Static drive ON/
OFF
01
0
1 0 1 0 0 1 0 0/1 _{1: Static drive (power-saving mode)}
0: Normal driving
(10) Select duty
Selects LCD cell driving duty.
0 1 0 1 0 1 0 1 0 0 0/1 _{1: 1/32}
0: 1/16
Increments column address counter by 1 when
(11) Read modify write 0 1 0 1 1 1 0 0 0 0 0 display data is written. (This is not done when
data is read.)
(12)
End
0 1 0 1 1 1 0 1 1 1 0 Clears read modify write mode.
(13)
Reset
Sets display start line register on the first line.
0 1 0 1 1 1 0 0 0 1 0 Also sets column address counter and page
address counter to 0.
* With display off (command (1)), static drive going on (9) invokes power-saving mode.
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