ks0074 Samsung Semiconductor, Inc., ks0074 Datasheet - Page 24

• Manufacturer Part Number: ks0074
• Description: 34com/80seg Driver & Controller For Dot Matrix Lcd
• Manufacturer: Samsung Semiconductor, Inc.

KS0074
* Note : 1. When an MPU program with Busy Flag(DB7) checking is made, 1/2 Fosc (is necessary) for executing
Instruction RE
SEGRAM
CGRAM
Quantity
Address
Address
DDRAM
Address
flag and
Address
Scroll
Read
Read
Busy
Write
Data
Data
Set
Set
Set
Set
the next instruction by the “E” signal after the Busy Flag (DB7) goes to “Low”.
2. “X” Don’t care
0
1
0
1
X
X
X
R
S
0
0
0
0
0
1
1
R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
0
0
0
0
1
0
1
BF AC6 AC5 AC4 AC3 AC2 AC1 AC0
D7 D6 D5 D4 D3 D2 D1 D0
D7 D6 D5 D4 D3 D2 D1 D0
0
0
1 AC6 AC5 AC4 AC3 AC2 AC1 AC0
1
X SQ5 SQ4 SQ3 SQ2 SQ1 SQ0
1 AC5 AC4 AC3 AC2 AC1 AC0
1
Instruction Code
34COM/80SEG DRIVER & CONTROLLER FOR DOT MATRIX LCD
X
X AC3 AC2 AC1 AC0
Set CGRAM address in address counter.
Set DDRAM address in address counter.
Can be known whether during internal
operation or not by reading BF. The
contents of address counter can also be
read.
Write data into internal RAM
(DDRAM / CGRAM / SEGRAM).
Read data from internal RAM
(DDRAM / CGRAM / SEGRAM).
Set SEGRAM address in address counter.
Set the quantity of horizontal dot scroll.
BF = “1” : busy state,
BF = “0” : ready state.
Description
(Table 6. continued)
Execution
270 )
(fosc =
39 s
39 s
39 s
39 s
Time
0 s
s
s