uc1602i-pp-m ETC-unknow, uc1602i-pp-m Datasheet - Page 27

• Manufacturer Part Number: uc1602i-pp-m
• Description: Single-chip, Ultra-low Power Passive Matrix Lcd Controller-driver
• Manufacturer: ETC-unknow

D
Cursor can be used to support many flexible user interface designs. Blinking cursor requires frequent update
to a limited set of pixels. UC1602I Cursor update mode is designed to facilitate such frequent data RAM
updates.
Under Cursor Update mode, both the wrap around (CA reset to 0, PA increment or decrement) and CA
increment on Read are temporary disabled. These two features allow system designer to minimize the need
to update CA and PA registers and allows on-chip RAM to be used in Read-Modify-Write style operations.
E
E
E
The following command sequence can be performed in all interface modes.
Note:
Rev. 0.54 10/12/2001
XAMPLE
XAMPLE
NABLE
ATA
#
1
2
3
4
#
1
2
3
4
#
RAM A
C/D W/R D7 D6 D5 D4 D3 D2 D1 D0
C/D W/R D7 D6 D5 D4 D3 D2 D1 D0
C/D W/R D7 D6 D5 D4 D3 D2 D1 D0
0
1
1
1
0
0
1
0
0
0
0
0
D
The order of these steps are not critical. However, for the smoothness of display effect,
the above sequence is recommended.
1: C
2: C
ISPLAY
0
1
1
0
0
0
0
0
0
0
0
0
CCESS
URSOR
URSOR
1
–
#
#
1
1
#
1
0
1
1
1
: C
U
U
1
–
#
#
1
1
#
1
1
0
0
0
PDATE WITH
PDATE
URSOR
1
–
#
#
1
1
#
1
#
1
1
1
W
U
0
–
#
#
0
0
#
0
#
0
0
0
PDATE
ITHOUT
0
–
#
#
1
1
#
1
#
0
0
1
R
EAD
0
–
#
#
1
1
#
1
#
1
1
1
R
-M
EAD
0
–
#
#
1
1
#
1
1
#
0
1
ODIFY
, A
0 Set Cursor-Update mode
– Dummy Read cycle
# Read Display Data
# Write Display Data
0 Clear Cursor Update Mode
1 Set Cursor-Update mode
# Write Display Data
0 Clear Cursor Update Mode
# (Opt.) Set Start Line
# (Opt.) Set All-Pixel-ON
# (Opt.) Set Inverse Mode.
1 Set Display ON
LL
-W
and set CR=CA
(Return to 2 and repeat
until the cursor is updated)
Return to 1 for next cursor
update cycle or continue
I
and set CR=CA
(Return to 2 and repeat
until the cursor is updated)
Return to 1 for next cursor
update cycle or continue
NTERFACE
RITE
, P
ARALLEL
Operation
Operation
Operation
M
ODES
I
NTERFACE OR
65x102 Matrix LCD Controller-Drivers
OM BZ
OM BZ
–
–
–
–
–
–
–
–
–
–
–
I
2
OM BZ
C M
11
–
–
–
0
0
0
0
0
0
0
0
0
0
0
ODE
0
0
0
0
CR tracks where
CA should be
restored later
CA unchanged
CA will increment,
but will not wrap
around
Set CA=CR
CR remembers
where CA should
be restored later
CA will increment
but will not wrap
around
Set CA=CR
Comments
Comments
Comments
UC1602I
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