
UC1682
80x104RGB CSTN Controller-Driver
Revision 0.6
23
(24) NOP
Action
No Operation
C/D W/R D7
0
0
D6
1
D5
1
D4
0
D3
0
D2
0
D1 D0
1
1
1
This command is used for “no operation”.
(25) S
ET
T
EST
C
ONTROL
Action
Set TT
C/D W/R D7
0
0
0
0
D6
1
D5
1
Testing parameter
D4
0
D3
0
D2
1
D1 D0
TT
1
(Double byte command)
This command is used for UltraChip production testing. Please do not use.
(26) S
ET
LCD B
IAS
R
ATIO
Action
C/D W/R D7
0
0
D6
1
D5
1
D4
0
D3
1
D2
0
D1 D0
BR1 BR0
Set Bias Ratio BR [1:0]
Bias ratio definition:
00b= 5
1
01b=7
10b=8
11b
=9
(27) R
ESET
C
URSOR
U
PDATE
M
ODE
Action
C/D W/R D7
D6
D5
D4
D3
D2
D1 D0
Reset Cursor Update Mode AC[3]=0
CA=CR
This command is used to reset cursor update mode function.
0
0
1
1
1
0
1
1
1
0
(28) S
ET
C
URSOR
U
PDATE
M
ODE
Action
C/D W/R D7
0
0
D6
1
D5
1
D4
0
D3
1
D2
1
D1 D0
1
Set AC[3]=1 CR=CA
This command is used for set cursor update mode function. When cursor update mode is set, UC1682 will
update register CR with the value of register CA. The column address CA will increment with write RAM data
operation but the address wraps around will be suspended no matter what WA setting is. However, the
column address will not increment in read RAM data operation.
1
1
The set cursor update mode can be used to implement “write after read RAM” function. The column address
(CA) will be restored to the value, which is before the set cursor update mode command, when resetting
cursor update mode.
The purpose of this pair of commands and their features is to support “write after read” function for cursor
implementation.
(29)
S
ET
COM E
ND
Action
Set CEN
C/D W/R D7
0
0
0
0
D6
1
D5
1
D4
1
D3
0
D2
0
D1 D0
0
1
1
(Double byte command)
CEN
register parameter
This command programs the ending COM electrode. CEN defines the number of used COM electrodes, and
it should correspond to the number of pixel-rows in the LCD.