Evaluation Kit Hardware
SAM4S-EK2 User Guide
4-22
11176A–ATARM–24-Sep-12
4.5
Connectors
4.5.1
Power Supply Connector J9
The SAM4S-EK2 evaluation board can be powered from a 5V DC power supply connected to the exter-
nal power supply jack J9. The positive pole is the center pin.
Figure 4-25. Power Supply Connector J9
4.5.2
USART Connector J5 With RTS/CTS Handshake Support
Figure 4-26. Male RS232/USART Connector J5
Table 4-9. Power Supply Connector J9 Signal Descriptions
Pin
Mnemonic
Signal Description
1
Center
+5 VCC
2
Gnd
Ground reference
Table 4-10. Serial COM1 Connector J5 Signal Descriptions
Pin
Mnemonic
Signal Description
1, 4, 6, 9
NC
NO CONNECTION
2
TXD TRANSMITTED DATA
RS232 serial data output signal
3
RXD RECEIVED DATA
RS232 serial data input signal
5
GND
GROUND
7
RTS READY TO SEND
Active-positive RS232 input signal
8
CTS CLEAR TO SEND
Active-positive RS232 output signal
