NHD-0216SZ-NSW-BBW-3V
Newhaven Display International, LLC 8/9
9)
Read busy flag & address
RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
0 1 BF AC6 AC5 AC4 AC3 AC2 AC1 AC0
This instruction shows whether SPLC780D is in internal operation or not.
If the resultant BF is
“High”, internal operation is in progress and should wait BF is to be LOW, which by
then the nest instruction can be performed. In this instruction you can also read the value of the address
counter.
10) Write data to RAM
RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
1 0 D7 D6 D5 D4 D3 D2 D1 D0
Write binary 8-bit data to DDRAM/CGRAM.
The selection of RAM from DDRAM, and CGRAM, is set by the previous address set instruction
(DDRAM address set, CGRAM address set).
RAM set instruction can also determine the AC direction to RAM.
After write operation. The address is automatically increased/decreased by 1, according to the entry
mode.
11) Read data from RAM
RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
1 1 D7 D6 D5 D4 D3 D2 D1 D0
Read binary 8-bit data from DDRAM/CGRAM.
The selection of RAM is set by the previous address set instruction. If the address set instruction of
RAM is not performed before this instruction, the data that has been read first is invalid, as the direction
of AC is not yet determined. If RAM data is read several times without RAM address instructions set
before, read operation, the correct RAM data can be obtained from the second. But the first data would be
incorrect, as there is no time margin to transfer RAM data.
In case of DDRAM read operation, cursor shift instruction plays the same role as DDRAM address
set instruction, it also transfers RAM data to output data register.
After read operation, address counter is automatically increased/decreased by 1 according to the
entry mode.
After CGRAM read operation, display shift may not be executed correctly.
NOTE: In case of RAM write operation, AC is increased/decreased by 1 as in read operation.
At this time, AC indicates next address position, but only the previous data can be read by the read
instruction.
Display character address code:
Display position
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
DDRAM
address
00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F
DDRAM
address
40 41 42 43 44 45 46 47 48 49 4A 4B 4C 4D 4E 4F
相关PDF资料
NHD-0216SZ-NSW-BBW LCD MOD CHAR 2X16 WHITE TRANSM
NHD-0216SZW-BG5 DISPLAY OLED CHAR 2X16 GRN
NHD-0216SZW-BY5 DISPLAY OLED CHAR 2X16 YLW
NHD-0216T2Z-FSY-YBW-P LCD MOD CHAR 2X16 W/PIN HDR
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NHD-0220AZ-FL-YBW LCD MOD CHAR 2X20 Y/G TRANSFL
NHD-0220BZ-FL-GBW LCD MOD CHAR 2X20 Y/G TRANSFL
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