User's Guide

UL865 Hardware User Guide
1VV0301050 Rev 2 – 2013-10-09
WARNING:
During power up the GPIOs may be subject to transient glitches.
Also the UART‘s control flow pins can be usable as GPI/O.
Pin
Signal
I/O
Function
Type
Input /
output
current
Default
State
ON_OFF
state
State
during
Reset
Note
1
GPO_A
O
Configurable GPO
CMOS
1.8V
1uA/1mA
INPUT
0
0
Alternate function
C109/DCD
2
GPO_B
O
Configurable GPO
CMOS
1.8V
1uA/1mA
INPUT
0
0
Alternate function
C125/RING
3
GPO_C
O
Configurable GPO
CMOS
1.8V
1uA/1mA
INPUT
0
0
Alternate function
C107/DSR
4
GPI_E
I
Configurable GPI
CMOS
1.8V
1uA/1mA
INPUT
0
0
Alternate function
C108/DTR
5
GPI_F
I
Configurable GPI
CMOS
1.8V
1uA/1mA
INPUT
0
0
Alternate function
C105/RTS
6
GPO_D
O
Configurable GPO
CMOS
1.8V
1uA/1mA
INPUT
0
0
Alternate function
C106/CTS