UPD16434 NEC, UPD16434 Datasheet - Page 45

• Manufacturer Part Number: UPD16434
• Description: 1/8/ 1/16 DUTY LCD CONTROLLER/DRIVER
• Manufacturer: NEC

9.4 Memory Bit Manipulation Commands
BRESET/BSET command in the data memory addressed by the data pointer is set/reset, the data pointer is modified
according to the lower 2 bits (J
these commands are executed, the data pointer contents are added by 5 or subtracted by 5.
are executed. Afterwards, the data pointer is modified according to the data processing mode that has been set.
modified value will be used as the initial value for the subsequent modification operation. The figure below shows the
BRESET and BSET command bit specifications and modification contents for the data pointer.
The following four different memory bit manipulation commands are available:
The BRESET and BSET commands can be executed in any data processing mode. After the bit specified by the
The CLCURS or WRCURS command is used to clear or set the cursor (bit 7 position) in the character mode. After
Data pointer manipulation by these memory bit manipulation commands is effective, only when these commands
However, the data pointer contents are modified by the memory bit manipulation command. Therefore, the
BRESET (Bit Reset)
BSET (Bit Set)
CLCURS (Clear Cursor)
WRCURS (Write Cursor)
B
0 0 0
0 0 1
1 1 1
2
to
B
J
0
0
1
1
1
1
B
1
J
0
0
) of the command byte.
J
0
1
0
1
0
+1
This setting is not allowed
No modification (The same address is maintained)
1
Data Sheet S10299EJ4V0DS00
7
Data pointer contents for modification
0
Data memory
PD16434
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