ks0074 Samsung Semiconductor, Inc., ks0074 Datasheet - Page 51

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

KS0074
INITIALIZING
1) Initializing by Internal Reset Circuit
 Display Clear instruction
 Set Functions instruction
 Control Display ON/OFF instruction
 Set Entry Mode instruction
Set Extension Function instruction
Enable Shift instruction
Set scroll Quantity instruction
2) Initializing by Hardware RESET input
When the power is turned on, KS0074 is initialized automatically by power on reset circuit.
During the initialization, the following instructions are executed, and BF(Busy Flag) is kept "High"(busy state) to the end of
initialization.
Write "20H" to all DDRAM
DL = 1 : 8-bit bus mode
N = 1 : 2-line display mode
RE = 0 : Extension register disable
BE = 0 : CGRAM/SEGRAM blink OFF
DH = 0 : Horizontal scroll enable
REV = 0 : Normal display (Not reversed display)
D = 0 : Display OFF
C = 0 : Cursor OFF
B = 0 : Blink OFF
I/D = 1 : Increment by 1
S = 0 : No entire display shift
BID = 0 : Normal direction segment port
FW = 0 : 5-dot font width character display
B/W = 0 : Normal cursor (8th line)
NW = 0 : Not 4-line display mode, 2-line mode is set because of N("1")
HS = 0000 : Scroll per line disable
DS = 0000 : Shift per line disable
SQ = 000000 : Not scroll
When RESET pin = "Low", KS0074 can be initialized like the case of power on reset.
During the power on reset operation, this pin is ignored.
34COM/80SEG DRIVER & CONTROLLER FOR DOT MATRIX LCD