KS0066 데이터 시트보기 (PDF) - Samsung
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KS0066 Datasheet PDF : 33 Pages
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KS0066U
16COM / 40SEG DRIVER & CONTROLLER FOR DOT MATRIX LCD
INTERFACE WITH MPU
1) Interface with 8-bit MPU
When interfacing data length are 8-bit, transfer is performed at a time through 8 ports, from DB0 to DB7.
Example of timing sequence is shown below.
RS
R/W
E
Internal
signal
DB7
DATA
Internal Operation
Busy
Busy
No
Busy
DATA
Instruction
Busy Flag Check Busy Flag Check Busy Flag Check
Instruction
Figure 4 . Example of 8-bit Bus Mode Timing Diagram
2) Interface with 4-bit MPU
When interfacing data length are 4-bit, only 4 ports, from DB4 to DB7, are used as data bus.
At First, the higher 4-bit (in case of 8-bit bus mode, the contents of DB4 - DB7), and then the lower 4-bit
(in case of 8-bit bus mode, the contents of DB0 - DB3) are transferred. So transfer is performed twice
Busy Flag outputs “High” after the second transfer is ended.
Example of timing sequence is shown below.
RS
R/W
E
Internal
signal
DB7
Internal Operation
D7 D3
Busy
AC3
No
Busy
AC3
D7
D3
Instruction
Busy Flag Check
Busy Flag Check
Instruction
Figure 5 . Example of 4-bit Bus Mode Timing Diagram
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