DCE

DCE - RS-232 to TTL

• RS-232 to TTL converter
• The DCE (peripheral) has the female.

H1 Connector

• Pins signal directions are reversed from an FTDI card
  • Can be directly wired to FTDI connector

1. GND
2. CTS (out)
3. VCC (3.3V or 5V)
4. TX (in)
5. Rx (out)
6. RTS (in)

Test Procedure

• FTDI-49MM
• DCE/DTE Cards
  • 9 pin connectors plugged together
• FTDI loopback cable
• Run PuTTY
  • 115,200 baud, RTS/CTS
• Type and it comes back

SP232A Application

• SP232ACN-L is 5V part
• ICL3232IBNZ is 3.3V or 5V part

DTE (reference)

• The DTE (PC) has the male connector

DCE Assembly Sheet

• DCE Assembly Sheet