參數(shù)資料
型號: KS0090
廠商: SAMSUNG SEMICONDUCTOR CO. LTD.
英文描述: Driver & Controller for Dot Matrix LCD(點陣LCD的驅(qū)動器和控制器)
中文描述: 驅(qū)動程序
文件頁數(shù): 11/48頁
文件大?。?/td> 695K
代理商: KS0090
26COM / 64SEG DRIVER & CONTROLLER FOR DOT MATRIX LCD
KS0090
11
Interface with MPU in Parallel Mode (PS =
High
)
During writing operation, two 8-bit registers, data register (DR) and instruction register (IR), are used. The data
register (DR) is used as temporary data storage place to be written into DDRAM/CGRAM/ICONRAM, and one of
these RAMs is selected by the RAM address setting instruction. The Instruction register (IR) is used only to store
instruction code transferred from MPU. To select DR or IR register, RS input pin is used in bus mode or serial
mode. In 4-bit bus mode, the RS input pin is needed to transfer 4-bit data (DB4 to DB7) two times. The high order
bits (for 8-bit mode DB4 to DB7) are transferred before the low order bits (for 8-bit mode DB0 to DB3). The DB0 to
DB3 pins are floated in this 4-bit bus mode. After RES resets, KS0090 considers first 4-bit data from MPU as the
high order bits.
Figure 2. 8-bit Parallel Bus Mode (68 series MPU Mode)
Figure 3. 8-bit Parallel Bus Mode (80 series MPU Mode)
RES
CSB
RS
E
DB0~DB7
Instruction
write
Data
write
RES
CSB
RS
E
DB0~DB7
Instruction
write
Data
write
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