This is the chip select. When /CS1=”L” and CS2=”H”, Then the chip select becomes active data/command I/O is enabled.
2
/RES
Reset pin.
3
A0
A0=”H”:indicate that D0 toD7 are display data.
A0=”L”:indicate that D0 toD7 are control data.
4
/WR
Read/Write control pin.
5
RD
When connected to an 8080 MPU, it is active LOW. This pad
is connected to the /RD signal of the 8080MPU, and the
NT7538 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 used as an enable clock input of the 6800 series
MPU
6
DB0
Data bus
7
DB1
8
DB2
9
DB3
10
DB4
11
DB5
12
DB6
13
DB7
14
VDD
Power supply
15
VSS
Power supply (GND)
16
VOUT
DC/DC voltage converter output.
17
CAP3+
Capacitor 3+ pad for Internal DC/DC voltage converter.
18
CAP1-
Capacitor 1- pad for Internal DC/DC voltage converter.
19
CAP1+
Capacitor 1+ pad for Internal DC/DC voltage converter.
20
CAP2+
Capacitor 2+ pad for Internal DC/DC voltage converter.
21
CAP2-
Capacitor 2- pad for Internal DC/DC voltage converter.
22
V1
LCD driver supply voltages. The voltage determined by LCD cell is impedance-converted by a resistive driver or an operation amplifier for application. Voltages should be the following relationship: