Hardware Configuration
PEB-2739I User’s Manual
2-3
The jumper settings are schematically depicted in this manual as follows:
Jumper Reference
Function Descriptions
JP1 Microcontroller
programming
JP2 Microcontroller
programming
JP3 Microcontroller
programming
JP4
5V / 3.3V backlight enable pin power level
selection
JP7 Clear
CMOS
JP8
5V / 3.3V Panel power selection
JP9
Serial port 1 function selection
J
J
J
P
P
P
1
1
1
,
,
,
J
J
J
P
P
P
2
2
2
,
,
,
J
J
J
P
P
P
3
3
3 Microcontroller programming
Pin
Signal Description
1-2 Short
Normal operation *
1-2 Open
Programming microcontroller
Note: The “*” mark for default setting
J
J
J
P
P
P
4
4
4 5V / 3.3V backlight enable pin power level selection
Pin
Signal Description
1-2 Short
3.3V*
2-3 Short
5V
Note: The “*” mark for default setting
J
J
J
P
P
P
7
7
7
Clear CMOS
JP7
Function
1-2 Short
Normal operation *
1-2 Open
Clear CMOS
Note: The “*” mark for default setting
J
J
J
P
P
P
8
8
8 5V / 3.3V Panel power selection
Pin
Signal Description
1-2 Short
3.3V *
2-3 Short
5V
Note: The “*” mark for default setting
J
J
J
P
P
P
9
9
9 Serial port 1 function selection
Pin
Signal Description
5-6, 9-11, 10-12, 15-17, 16-18 Short
RS-232*
3-4, 7-9, 8-10, 13-15, 14-16, 21-22 Short
RS-422
1-2, 7-9, 8-10, 19-20 Short
RS-485
Note: The “*” mark for default setting