LH1594 SHARP [Sharp Electrionic Components], LH1594 Datasheet - Page 21

• Manufacturer Part Number: LH1594
• Description: 80-Segment and 17-Common Outputs LCD Driver IC with A Built-in CGROM
• Manufacturer: SHARP [Sharp Electrionic Components]

4.6. Entry Mode Register Set
When the extended register enable bit (RE) is "0",
the following I/D, and S bits are accessed :
4.7. Display Mode Register Set
When the extended register enable bit (RE) is "1",
the following NL bit is accessed :
I/D
S
NL
* mark means "Don't care".
: When any character code is written into
: If S = 1, the entire display is shifted to
: This command selects the displaying
RE
RE
0
1
or read out from the DDRAM, the
DDRAM address is shifted by +1 (I/D =
1) or –1 (I/D = 0). In case of +1, the
cursor or the blinking cursor moves to
the right. This is also applicable when
any data is written into or read out from
the CGRAM or SEGRAM.
either the left or right when any
character code is written into the
DDRAM. If I/D = 1, the entire display is
lines.
NL = "0" : Displays 2 lines. Display duty
NL = "1" : Displays 1 line. Display duty
RS
RS
0
0
ratio is 1/16.
ratio is 1/8.
D
D
0
0
7
7
D
D
0
0
6
6
D
D
0
0
5
5
D
D
0
0
4
4
D
D
21
0
0
3
3
D
D
1
1
2
2
I/D
D
D
*
shifted to the left; or if I/D = 0, the entire
display is shifted to the right. Therefore,
if I/D = 1, the cursor looks stationary with
only the display shifted. When any
character code is read out from the
DDRAM, the display is not shifted. If S =
0, the display remains unshifted. When
any data is written into or read out from
the CGRAM or SEGRAM, the display
also remains unshifted.
When duty + 1 command is ON (PLUS
= 1), if S = 1 and any code is written
into DDRAM, the line that COMI scans
is also shifted, so that this command is
allowed only when duty + 1 command is
OFF (PLUS = 0) state.
1
1
NL
D
D
S
0
0
LH1594/LH1595