128X32 Graphic COG LCD ST7565R | FSTN + Display With White Backlight/HTG12832F-5

WHITE

1

IRS

This terminal selects the resistors for the V0 oltage level adjustment. IRS = “H”: Use the internal resistors

IRS = “L”: Do not use the internal resistors. The V0 voltage level is regulated by an external resistive voltage divider attached to the VR terminal

3

C86

This is the MPU interface selection pin. C86 = “H”: 6800 Series MPU interface.

C86 = “L”: 8080 Series MPU interface.

4

VR

Output voltage regulator terminal. Provides the voltage between VSS and V0 through a resistive voltage divider.

IRS = “L” : the V0 voltage regulator internal resistors are not used. IRS = “H” : the V0 voltage regulator internal resistors are used.

DC/DC voltage converter. Connect a capacitor between this terminal

and VSS or VDD terminal

This is an 8-bit bi-directional data bus that connects to an 8-bit or

16-bit standard MPU data bus.

26

E

When connected to 8080 series MPU, this pin is treated as the “/RD” signal of the 8080 MPU and is LOW-active. The data bus is in an output status when this signal is “L”.

When connected to 6800 series MPU, this pin is treated as the “E” signal of the 6800 MPU and is HIGH-active. This is the enable clock input terminal of the 6800 Series MPU

27

R/W

When connected to 8080 series MPU, this pin is treated as the “/WR” signal of the 8080 MPU and is LOW-active. The signals on the data bus are latched at the rising edge of the /WR signal.

When connected to 6800 series MPU, this pin is treated as the “R/W”

signal of the 6800 MPU and decides the access type : When R/W = “H”: Read.

When R/W = “L”: Write.

28

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 command.

A0 = “H”: Indicates that D0 to D7 are display data.

A0 = “L”: Indicates that D0 to D7 are control data.

/CS1,/RES,A0,/WR,

/RD,D0~D7,C86