ST7556 Sitronix Technology, ST7556 Datasheet - Page 42

• Manufacturer Part Number: ST7556
• Description: 65 x 102 Dot Matrix LCD Controller/Driver
• Manufacturer: Sitronix Technology

www.DataSheet4U.com
ST7556
16. THE MPU INTERFACE (REFERENCE EXAMPLES)
The ST7556 Series can be connected to either 80X86 Series MPUs or to 6800 Series MPUs. Moreover, using the serial
interface it is possible to operate the ST7556 series chips with fewer signal lines.
The display area can be enlarged by using multiple ST7556 Series chips. When this is done, the chip select signal can be
used to select the individual ICs to access.
(1) 8080 Series MPUs
(2) 6800 Series MPUs
(3) Using the Serial Interface (4-line interface)
Ver 2.2
GND
V
CC
GND
GND
V
V
CC
CC
A1 to A7
Port 1
Port 2
RES
DO to D7
DO to D7
A0
A1 to A7
A1 to A7
IORQ
IORQ
RES
RES
WR
WR
RD
RD
A0
A0
Decoder
RESET
Decoder
Decoder
RESET
RESET
42/43
A0
/CS
SI
SCL
/RES
A0
/CS
D0 to D7
E (/RD)
R/W (/WR)
/RES
A0
/CS
D0 to D7
/RD (E)
/WR (R/W)
/RES
V
V
SS
V
V
DD
IMS
V
SS
V
SS
PS
DD
DD
IMS
IMS
PS
PS
V
V
DD
V
V
SS
V
V
DD
DD
SS
SS
2005/10/05