NAR-5620 Series
User
’
s
Manual
38
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END programstart
4.2
ByPass WDT Programming Guide
4.3 About EZIO2
Proprietary keypad and LCD display interfaces are implemented in traditional computing system
design, but they are usually different from system to system. The main purpose to roll this
module out is to provide an easier human-machine interface for those computing systems
regarding
appl
i
cat
i
on
f
r
i
endl
y
oper
at
i
on
as
a
“
must
.
”
The design goals of this interface are:
A single interface for those applications where both LCD display and keypad are required.
This interface should be available in every computing system.
The communication implementation should be OS independent.
Our
sol
ut
i
on
i
s
t
o
use
“
Ser
i
al
por
t
”
as
t
he
i
nt
er
f
ace
f
or
bot
h
LCD
di
spl
ay
a
nd keypad. A simple
protocol is further defined so that applications can directly communicate with this module no
matter what the Operating System is.
WARNING!
THE LCD DRIVER ICS ARE MADE OF CMOS PROCESS, DAMAGED BY STATIC CHARGE VERY
EASILY. MAKE SURE THE USER IS GROUNDED WHEN HANDLING THE LCD.
4.3.1
Features
Ideal user interface for communication appliance
No driver required; OS independent
Alphanumeric characters display support
