參數(shù)資料
型號(hào): S6B1741
廠商: SAMSUNG SEMICONDUCTOR CO. LTD.
英文描述: 128 SEG / 129 COM DRIVER %26 CONTROLLER FOR 4 GRAY SCALE STN LCD
中文描述: 賽格128/129 COM驅(qū)動(dòng)程序及4級(jí)灰度STN液晶顯示控制器
文件頁(yè)數(shù): 21/78頁(yè)
文件大?。?/td> 472K
代理商: S6B1741
128SEG/129COM DRIVER & CONTROLLER FOR STN LCD
S6B1741
17
Data Transfer
The S6B1741 uses bus holder and internal data bus for data transfer with the MPU. When writing data from the MPU
to on-chip RAM, data is automatically transferred from the bus holder to the RAM as shown in Figure 7. And when
reading data from on-chip RAM to the MPU, the data for the initial read cycle is stored in the bus holder (dummy
read) and the MPU reads this stored data from bus holder for the next data read cycle as shown in figure 6. This
means that a dummy read cycle must be inserted between each pair of address sets when a sequence of address
sets is executed. Therefore, the data of the specified address cannot be output with the read display data instruction
right after the address sets, but can be output at the second read of data.
RS
/WR
DB0 to DB7
N
D(N)
D(N+1)
D(N+2)
D(N+3)
Internal signals
MPU signals
/WR
BUS Holder
Column Address
N
N+1
N+2
N+3
N
D(N)
D(N+1)
D(N+2)
D(N+3)
Figure 7. Write Timing
MPU signals
Internal signals
RS
/WR
/RD
DB0 to DB7
N
D(N+1)
/WR
/RD
BUS Holder
Column Address
N
D(N)
D(N+1)
D(N+2)
N
N+1
N+2
N+3
D(N)
Dummy
D(N+2)
Figure 8. Read Timing
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