參數(shù)資料
型號(hào)： UPD7229A
廠商： NEC Corp.
英文描述： 1/8, 1/16 DUTY LCD CONTROLLER/DRIVER
中文描述： 1 / 8，1 / 16稅LCD控制器/驅(qū)動(dòng)
文件頁(yè)數(shù)： 43/64頁(yè)
文件大?。?/td> 314K
代理商： UPD7229A
Data Sheet S10299EJ4V0DS00
43
μ
PD16434
I
1
I
0
Data pointer contents of modification
0
0
Automatically incremented (+1) each time a byte of data is processed.
0
1
Automatically decremented (
1) each time a byte of data is processed.
1
0
This setting is not allowed.
1
1
No modification (the same address is maintained)
(1) SRM (Set Read Mode)
0
1
1
0
0
0
I
1
I
0
The data processing mode is set to the read mode by this command. Afterwards, data processing will be
performed in the read mode.
When this mode is set, the contents of the data memory, addressed by the current contents of the data pointer,
are automatically transferred to the serial/parallel register.
The data pointer is then modified according to I
1
I
0
.
When all 8 bits of the serial/parallel register contents are read by the CPU, the contents of the data memory,
addressed by the modified data pointer, are automatically transferred into the serial/parallel register for the next
read operation. Afterwards, the same operation is repeated by the CPU, each time an 8-bit data is read.
(2) SWM (Set Write Mode)
0
1
1
0
0
1
I
1
I
0
The data processing mode is set to the write mode by this command. Afterwards, data processing will be
performed in the write mode.
When this mode is set, the 8-bit data written into the serial/parallel register by the CPU is stored into the data
memory addressed by the current contents of the data pointer. The data pointer is then modified, according to I
1
I
0
.
Afterwards, the same operation is repeated, each time an 8-bit data is written by the CPU.
(3) SORM (Set OR Mode)
0
1
1
0
1
0
I
1
I
0
The data processing mode is set to the OR mode by this command. Afterwards, data processing will be
performed in the OR mode.
When this mode is set, the 8-bit data, written into the serial/parallel register by the CPU, is ORed with the data
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