RW1068 ETC-unknow, RW1068 Datasheet - Page 23

• Manufacturer Part Number: RW1068
• Description: 26com/84seg Driver & Controller For Dot Matrix Lcd
• Manufacturer: ETC-unknow

OUTLINE
To overcome the speed difference between internal clock of RW1068 and MPU clock, RW1068
performs internal operation by storing control information to IR or DR. The internal operation is
determined according to the signal from MPU, composed of read/write and data bus.
Instruction can be divided largely four kinds;
• RW1068 function set instructions (set display methods, set data length, etc.)
• Address set instructions to internal RAM
• Data transfer instructions with internal RAM
• Others
The address of internal RAM is automatically increased or decreased by 1.
NOTE: During internal operation, Busy Flag (DB7) is read high. Busy Flag check must be proceeded the next
INSTRUCTION DESCRIPTION
instruction.
Busy flag check must be proceeded the next instruction.
When an MPU program with Busy Flag (DB7) checking is made, 1/2 Fosc (is necessary) for executing the
next instruction by the falling edge of the “E” signal after the Busy Flag (DB7) goes to “Low”.
26COM/84SEG DRIVER & CONTROLLER FOR DOT MATRIX LCD
RockWorks Technology Corp.
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RW1068