ks0073 ETC-unknow, ks0073 Datasheet - Page 25

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

KS0073
INSTRUCTION DESCRIPTION
OUTLINE
To overcome the speed difference between the internal clock of KS0073 and the MPU clock, KS0073 performs
internal operation by storing control information to IR or DR. The internal operation is determined according to th
signal from MPU, composed of read/write and data bus (Refer to Table 6 and Table 10).
Instruction can be divided largely into four kinds,
(1) KS0073 function set instructions (set display methods, set data length, etc.)
(2) address set instructions to internal RAM
(3) data transfer instructions with internal RAM
(4) others.
The address of internal RAM is automatically increased or decreased by 1.
When IE
when IE = “Low”, KS0073 is operated according to Instruction Set 2 (Table 10).
NOTE: During internal operation, Busy Flag (DB7) reads High. Busy Flag check must precede the next
instruction.
When an MPU program with Busy Flag (DB7) checking is made, 1/2Fosc is necessary for executing
the next instruction by the falling edge of the ‘E’ signal after the Busy Flag (DB7) goes to “Low”.
“High”, KS0073 is operated according to Instruction Set 1 (Table 6) and
34COM / 60SEG DRIVER & CONTROLLER FOR DOT MATRIX LCD