ST7032 查看數據表（PDF） - Sitronix Technology Co., Ltd.
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ST7032 Datasheet PDF : 63 Pages
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ST7032
n Instructions
There are four categories of instructions that:
l Designate ST7032 functions, such as display format, data length, etc.
l Set internal RAM addresses
l Perform data transfer with internal RAM
l Others
Ø instruction table at “Normal mode”
(When “EXT” option pin connect to VDD, the instruction set follow below table)
Instruction
Instruction Code
RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
Description
Instruction
Execution Time
OSC= OSC= OSC=
380KHz 540kHz 700KHz
Clear Display
0
0
0
0
0
0
0
0
0
Write "20H" to DDRAM. and set
1 DDRAM address to "00H" from AC
1.08
ms
0.76
ms
0.59
ms
Set DDRAM address to "00H" from
Return Home
0
0
0
0
0
0
0
0
1
AC and return cursor to its original
x
position if shifted. The contents of
1.08
ms
0.76
ms
0.59
ms
DDRAM are not changed.
Sets cursor move direction and
Entry Mode
Set
specifies display shift. These
0 0 0 0 0 0 0 1 I/D S operations are performed during
26.3 us 18.5 us 14.3 us
data write 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
26.3 us 18.5 us 14.3 us
S/C and R/L:
Cursor or
Display Shift 0
0
0
0
0
1 S/C R/L x
x Set cursor moving and display shift 26.3 us 18.5 us 14.3 us
control bit, and the direction, without
changing DDRAM data.
Function Set 0
0
0
0
1 DL N
x
x
DL: interface data is 8/4 bits
x
N: number of line is 2/1
26.3 us 18.5 us 14.3 us
Set CGRAM 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 address
0 0 1 AC5 AC4 AC3 AC2 AC1 AC0 counter
26.3 us 18.5 us 14.3 us
Set DDRAM address in address
0 1 AC6 AC5 AC4 AC3 AC2 AC1 AC0 counter
26.3 us 18.5 us 14.3 us
Whether during internal operation or
not can be known by reading BF.
1 BF AC6 AC5 AC4 AC3 AC2 AC1 AC0 The contents of address counter
0
0
0
can also be read.
Write data into internal RAM
0 D7 D6 D5 D4 D3 D2 D1 D0 (DDRAM/CGRAM)
26.3 us 18.5 us 14.3 us
Read data from internal RAM
1 D7 D6 D5 D4 D3 D2 D1 D0 (DDRAM/CGRAM)
26.3 us 18.5 us 14.3 us
Note:
Be sure the ST7032 is not in the busy state (BF = 0) before sending an instruction from the MPU to the ST7032.
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.
V1.4
19/61
2008/08/18
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