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n
Names of Signals and Functions
No.
Codes
I/O
Function
Performance
Signal Logic
1
5V
-
Power
5V
±
10%
-
2
GND
-
Ground
-
-
3
RXD
Input
Serial input CMOS
CMOS input
47 k
Ω
pull up
0:0V, 1:5V
(positive logic)
4
TXD
Output
Serial output
CMOS output
I
OL
=2mA,
I
OH
=2mA
5
STOP
Input
Receive process of command
being executed / command
execution will be aborted and
after STOP is input, will be on
stand by for command
CMOS input
47 k
Ω
pull up
↓
active
6
EXT_IN
Input
(unused)
CMOS input
47 k
Ω
pull up
-
7
COMM
Output
Will be output while
communication is occurring
between tag
CMOS output
I
OL
=10mA,
I
OH
=2mA
H active
8
NORM
Output
Will be output after
transmission with tag is
successfully completed
CMOS output
I
OL
=10mA,
I
OH
=2mA
H active
9
ERR
Output
Will be output when
transmission with tag was
unsuccessful
CMOS output
I
OL
=10mA,
I
OH
=2mA
H active
10
RUN
Output
Will be output when Module is
operating normally
CMOS output
I
OL
=10mA,
I
OH
=2mA
H active
n
Example of Connection with User board
Please refer to the below-indicated connection for connecting the Module to the User board. Any
signals that will be unused should not be connected.
5V
GND
5V(1)
GND(2)
RXD(3)
TXD(4)
STOP(5)
EXT_IN(6)
COMM(7)
NORM(8)
ERR(9)
RUN(10)
TXD
RXD
OUT1
IN1
IN2
IN3
IN4
User board
User CPU
R/W Module
Numbers in ( ) indicates
pin number
SCI
0V
data
S
E
5V
