ST7066U-0A View Datasheet(PDF) - Unspecified
Part Name
Description
MFG CO.
'ST7066U-0A' PDF : 42 Pages View PDF
ST7066U
n Instructions
There are four categories of instructions that:
l Designate ST7066U functions, such as display format, data length, etc.
l Set internal RAM addresses
l Perform data transfer with internal RAM
l Others
Instruction Table:
Instruction Code
Instruction
RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
Description
Description
Time
(270KHz)
Clear
Display
Write "20H" to DDRAM. and
0 0 0 0 0 0 0 0 0 1 set DDRAM address to
1.52 ms
"00H" from AC
Set DDRAM address to
Return
Home
"00H" from AC and return
0 0 0 0 0 0 0 0 1 x cursor to its original position 1.52 ms
if shifted. The contents of
DDRAM are not changed.
Sets cursor move direction
Entry Mode
and specifies display shift.
Set
0 0 0 0 0 0 0 1 I/D S These operations are
performed during data write
37 us
and read.
Display
ON/OFF
D=1:entire display on
0 0 0 0 0 0 1 D C B C=1:cursor on
B=1:cursor position on
37 us
Cursor or
Display
Shift
Set cursor moving and
display shift control bit, and
0 0 0 0 0 1 S/C R/L x x the direction, without
changing DDRAM data.
37 us
Function
Set
DL:interface data is 8/4 bits
0 0 0 0 1 DL N F x x N:number of line is 2/1
F:font size is 5x11/5x8
37 us
Set CGRAM
address
0
Set DDRAM
address
0
Read Busy
flag and
0
address
Write data
to RAM
1
Read data
from RAM 1
Set CGRAM address in
0
0
1 AC5 AC4 AC3 AC2 AC1 AC0 address counter
Set DDRAM address in
0
1 AC6 AC5 AC4 AC3 AC2 AC1 AC0 address counter
Whether during internal
operation or not can be
1 BF AC6 AC5 AC4 AC3 AC2 AC1 AC0 known by reading BF. The
contents of address counter
can also be read.
Write data into internal
0 D7 D6 D5 D4 D3 D2 D1 D0 RAM
(DDRAM/CGRAM)
Read data from internal
1 D7 D6 D5 D4 D3 D2 D1 D0 RAM
(DDRAM/CGRAM)
37 us
37 us
0 us
37 us
37 us
Note:
Be sure the ST7066U is not in the busy state (BF = 0) before sending an instruction from the MPU to the
ST7066U. If an instruction is sent without checking the busy flag, the time between the first instruction and next
instruction will take much longer than the instruction time itself. Refer to Instruction Table for the list of each
instruction execution time.
V2.2
17/42
2006/05/11
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