WIZ127SR User’s Manual
3
J2.10
SPDLED_M1
Ethernet Speed LED
Output
-
J2.11
FDXLED_M2
Ethernet Full-duplex LED
Output
-
J2.12
VDD3V3
3.3V Power Supply
J3.1
PC14
Input/Output
CMOS/TTL/5V tolerant Input
J3.2
PC15
Input/Output
CMOS/TTL/5V tolerant Input
J3.3
UART2_CTS
Clear To Send for UART2
Input
CMOS/TTL/5V tolerant Input
J3.4
UART2_RTS
Request To Send for UART2
Output
CMOS/TTL/5V tolerant Input
J3.5
UART2_TX
TX Data Output for UART2
We
recommend
to
add
external pull-up resistor on
UART2_TX.
Output
CMOS/TTL/5V tolerant Input
J3.6
UART2_RX
RX Data Input for UART2
Input
CMOS/TTL/5V tolerant Input
J3.7
High: Not connected
Low: Connected
Output
CMOS/TTL/5V tolerant Input
J3.8
PB11
Factory Reset (Active Low)
Input
CMOS/TTL/5V tolerant Input
Factory Reset is done if it is
asserted low during MCU
booting.
J3.9
PB12
GPIO pin
Input/Output
CMOS/TTL/5V tolerant Input
J3.10
PB13
GPIO pin
Input/Output
CMOS/TTL/5V tolerant Input
J3.11
PB14
GPIO pin
Input/Output
CMOS/TTL/5V tolerant Input
J3.12
PB15
GPIO pin
Input/Output
CMOS/TTL/5V tolerant Input
(*) This pin can be used for H/W Trigger (Active Low).
Table 1 Pin Description