Table 1 Pin Description - Wiznet WIZ127SR User Manual

J2.10 SPDLED_M1
J2.11 FDXLED_M2
J2.12 VDD3V3
J3.1 PC14
J3.2 PC15
J3.3 UART2_CTS
J3.4 UART2_RTS
J3.5 UART2_TX
J3.6 UART2_RX
J3.7 STATUS2
J3.8 PB11
J3.9 PB12
J3.10 PB13
J3.11 PB14
J3.12 PB15
(*) This pin can be used for H/W Trigger (Active Low).
WIZ127SR User's Manual
Ethernet Speed LED
Ethernet Full-duplex LED
3.3V Power Supply
Clear To Send for UART2
Request To Send for UART2
TX Data Output for UART2
We recommend to add
external pull-up resistor on
UART2_TX.
RX Data Input for UART2
High: Not connected
Low: Connected
Factory Reset (Active Low)
GPIO pin
GPIO pin
GPIO pin
GPIO pin

Table 1 Pin Description

Output
Output
Input/Output CMOS/TTL/5V tolerant Input
Input/Output CMOS/TTL/5V tolerant Input
Input CMOS/TTL/5V tolerant Input
Output CMOS/TTL/5V tolerant Input
Output CMOS/TTL/5V tolerant Input
Input CMOS/TTL/5V tolerant Input
Output CMOS/TTL/5V tolerant Input
CMOS/TTL/5V tolerant Input
Factory Reset is done if it is
Input
asserted low during MCU
booting.
Input/Output CMOS/TTL/5V tolerant Input
Input/Output CMOS/TTL/5V tolerant Input
Input/Output CMOS/TTL/5V tolerant Input
Input/Output CMOS/TTL/5V tolerant Input
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3