RW1068 ETC-unknow, RW1068 Datasheet - Page 31

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

RW1068 can transfer data in bus mode (4-bit or 8-bit) or serial mode with MPU. So you can use any
type 4 or 8- bit MPU.
In case of 4-bit bus mode, data transfer is performed by two times to transfer 1 byte data.
• When interfacing data lengths are 4-bit, only 4 ports, from DB4 - DB7, are used as data bus.
• When interfacing data length are 8-bit, transfer is performed at a time through 8 ports, from DB0 -
• If PSB is set to "High", Parallel bus mode is set 4-bit or 8-bit.
• If PSB is set to "Low", serial transfer mode is set.
At first higher 4-bit (in case of 8-bit bus mode, the contents of DB4 - DB7) are transferred, and then
lower 4- bit (in case of 8-bit bus mode, the contents of DB0 - DB3) are transferred. So transfer is
performed by two times. Busy Flag outputs "High" after the second transfer are ended.
DB7.
INTERFACE WITH MPU
26COM/84SEG DRIVER & CONTROLLER FOR DOT MATRIX LCD
RockWorks Technology Corp.
31
RW1068