Datasheet

GE-O12864D3-TFH/R Page 7/22 21.09.2009
7.Interface Pin Function
Pin No. Symbol Level Description
1 /CS1
This is the chip select signal. When /CS1 = “L” , then the
chip select becomes active, and data/command I/O is enabled.
2 /RES When /RES is set to “L” , the settings are initialized.
3 A0
This is connect to the least significant bit of the normal MPU
address bus, and it determines whether the data bits are data or a
command.
A0 = “H”: Indicates that D0 to D7 are display data.
A0 = “L”: Indicates that D0 to D7 are control data.
4 /WR(R/W)
When connected to an 8080 MPU, this is active LOW.
(R/W) This terminal connects to the 8080 MPU /WR signal. The
signals on the data bus are latched at the rising edge of the /WR
signal.
When connected to a 6800 Series MPU:
This is the read/write control signal input terminal.
When R/W = “H”: Read.
When R/W = “L”: Write.
5 /RD(E)
When connected to an 8080 MPU, this is active LOW.
(E) This pin is connected to the /RD signal of the 8080 MPU, and
the ST7565P
series data bus is in an output status when this signal
is “L”.
When connected to a 6800 Series MPU, this is active HIGH.
This is the 6800 Series MPU enable clock input terminal.
6 DB0
This is an 8-bit bi-directional data bus that connects to an 8-bit or
16-bit standard MPU data
Bus.
7 DB1
8 DB2
9 DB3
10 DB4
11 DB5
12 DB6
13 DB7
14 VDD Shared with the MPU power supply terminal VDD. ( 3.3 V )
15 VSS This is a 0V terminal connected to the system GND.
16 VOUT
DC/DC voltage converter. Connect a capacitor between this
terminal and VSS.
17 CAP5+
DC/DC voltage converter. Connect a capacitor between this
terminal and the CAP1- terminal.
18 CAP3+
DC/DC voltage converter. Connect a capacitor between this
terminal and the CAP1- terminal.