ks0073 ETC-unknow, ks0073 Datasheet - Page 49

• Manufacturer Part Number: ks0073
• Description: 34com / 60seg Driver & Controller For Dot Matrix Lcd
• Manufacturer: ETC-unknow

KS0073
Interface with MPU in Bus Mode
1) Interface with 8-bit MPU
If 8-bit MPU is used, KS0073 can connect directly with that.
In this case, port E, RS, R/W and DB0 to DB7 need to interface each other.
Example of timing sequence is shown below.
2) Interface with 4-bit MPU
If 4-bit MPU is used, KS0073 can connect directly with this.
In this case, port E, RS, R/W and DB4 to DB7 need to interface each other. The transfer is performed by twice.
Example of timing sequence is shown below.
Internal
signal
Internal
signal
RS
R/W
RS
R/W
DB7
DB7
E
E
INSTRUCTION
INSTRUCTION
D7
DATA
Fig-17. Example of 8-bit Bus Mode Timing Sequence
Fig-18. Example of 4-bit Bus Mode Timing Sequence
D3
34COM / 60SEG DRIVER & CONTROLLER FOR DOT MATRIX LCD
Busy Flag Check
Internal operation
Internal operation
Busy
Busy Flag Check
Busy
AC3
Busy Flag Check
Busy
Busy Flag Check
Busy
No
Busy Flag Check
No Busy
AC3
D7
INSTRUCTION
INSTRUCTION
DATA
D3