ST7066 Просмотр технического описания (PDF) - Unspecified
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ST7066 Datasheet PDF : 29 Pages
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ST7066
Instructions
There are four categories of instructions that:
!" Designate ST7066 functions, such as display format, data length, etc.
!" Set internal RAM addresses
!" Perform data transfer with internal RAM
!" Others
Instruction Table:
Instruction Code
Instruction
DB DB DB DB DB DB DB DB
RS RW
76543210
Description
Description
Time
(270KHZ)
Clear
Display
Write "20H" to DDRAM. and set
0000000001
1.52 ms
DDRAM address to "00H" from AC
Return
Home
Set DDRAM address to "00H" from AC
and return cursor to its original position
000000001x
1.52 ms
if shifted. The contents of DDRAM are
not changed.
Sets cursor move direction and
Entry Mode
specifies display shift. These operations
0 0 0 0 0 0 0 1 I/D S
Set
are performed during data write and
read.
37 us
D=1: entire display on
Display
0 0 0 0 0 0 1 D C B C=1: cursor on
ON/OFF
B=1: cursor position on
37 us
Cursor or
Display 0 0 0 0 0 1 S/C R/L x
Shift
Set cursor moving and display shift
x control bit, and the direction, without
changing DDRAM data.
37 us
DL: interface data is 8/4 bits
Function
0 0 0 0 1 DL N F x x NL: number of line is 2/1
Set
F: font size is 5x11/5x8
37 us
Set
Set CGRAM address in address counter
AC AC AC AC AC AC
CGRAM 0 0 0 1
37 us
543210
address
Set DDRAM
AC AC AC AC AC AC AC Set DDRAM address in address counter
001
37 us
address
6543210
Whether during internal operation or not
Read Busy
AC AC AC AC AC AC AC can be known by reading BF. The
flag and 0 1 BF
0 us
6 5 4 3 2 1 0 contents of address counter can also be
address
read.
Write data
Write data into internal RAM
1 0 D7 D6 D5 D4 D3 D2 D1 D0
to RAM
(DDRAM/CGRAM)
43 us
Read data
Read data from internal RAM
1 1 D7 D6 D5 D4 D3 D2 D1 D0
from RAM
(DDRAM/CGRAM)
43 us
Note:
Be sure the ST7066 is not in the busy state (BF = 0) before sending an instruction from the MPU to the ST7066.
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.
V1.2
13
2000/6/13
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