ST7558
16.THE MPU INTERFACE (REFERENCE EXAMPLES)
The ST7558 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 ST7558 series chips with fewer signal lines.
The display area can be enlarged by using multiple ST7558 Series chips. When this is done, the chip select signal can be
used to select the individual Ics to access.
(1) 8080 Series MPUs
VDD
VCC
VDD
IM S
A0
A0
A1toA7
IORQ
Decoder
/CS
DO toD7
RD
D0toD7
E (/RD)
R/W (/W R)
/RES
W R
RES
PS
GND
VSS
RESET
VSS
(2) 6800 Series MPUs
VDD
VCC
VDD
IM S
A0
A0
A1toA7
IORQ
/CS
Decoder
DO toD7
RD
D0toD7
/RD (E)
/W R (R/W )
/RES
W R
RES
PS
GND
VSS
RESET
VSS
(3) Using the Serial Interface (4-line interface)
VDD
VCC
VDD
IM S
A0
A0
/CS
A1toA7
Decoder
Port1
Port2
RES
SI
SCL
/RES
PS
GND
VSS
RESET
VSS
Ver 2.3
53/56
2005/10/05
SITRONIX [ SITRONIX TECHNOLOGY CO., LTD. ]
