ST7571 Sitronix Technology, ST7571 Datasheet - Page 12

• Manufacturer Part Number: ST7571
• Description: 4 Gray Scale Dot Matrix LCD Controller/Driver
• Manufacturer: Sitronix Technology

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ST7571
6.4 MICROPROCESSOR INTERFACE
Microprocessor Interface Pin Description
Ver 1.5a
PS[2:0]
Name
RWR
ERD
RST
CSB
A0
I/O
I
I
I
I
I
I
Reset input pin.
When RST is “L”, initialization is executed.
PS[2:0] select the microprocessor interface:
* NOTE: It is impossible to read data from the on-chip DDRAM.
For detailed interface connection, please refer to Section 7.1 and Application Circuits.
Chip select input pin.
The interface is enabled only when CSB is "L" (except I
When CSB is non-active, DB[7:0] are high impedance.
CSB is not used in I
Register select input pin.
A0 = “H”: DB0 to DB7 are display data.
A0 = “L”: DB0 to DB7 are control command.
A0 is not used in serial 3-Line and I
Write execution control pin.
Read / Write execution control pin.
PS2
PS2
PS2
H
L
L
L
L
L
L
L
L
PS1
PS1
PS1
H
H
L
L
H
H
L
L
L
PS0
PS0
PS0
H
H
H
H
H
H
L
L
L
2
C interface; it is recommended to fix CSB at “H” by VDD1.
6800-series
8080-series
6800-series
8080-series
Parallel 8080 MPU Interface
Parallel 6800 MPU Interface
Serial 3-Line Interface
Serial 4-Line Interface
Serial I
MPU Type
MPU Type
Selected Interface Mode
2
12/76
C Interface
2
C interface; it is recommended to fix A0 at “H” by VDD1.
RWR
ERD
R/W
/WR
/RD
E
Description
Write control input pin.
Keep this pin at “L” level.
The data on DB[7:0] are latched at the rising
edge of the /WR signal.
The data on DB[7:0] are latched at the falling
edge of the E signal.
Keep this pin at “H” level.
2
C Interface).
Description
Description
2009/7/21