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RS232 to TTL Serial Port Module Bidirectional Transceiver Compatible with 3.3V 5V Hardware Automatic Flow Control with Over-Voltage Protection

KWD 4
Brand
KNACRO
Weight
21 g
– 1 +

Special Features

  • RS232 female to TTL Serial Port Bidirectional Transceiver Module, for SST, STC, NXP microcontroller Download. Can also be used for other purposes, such as hard disk repair, write router firmware, GPS signal reading and other functions, but requires users to have a certain level of technology can be achieved.
  • This module contains over-voltage protection circuit to better protect your computer and equipment.
  • This module contains hard flow control, and the TTL side of the module RTS signal is not dangling, is set to enable bidirectional transceiver function by default. Prevent SP3232 from floating in some pins, causing chip oscillation and introducing high-frequency interference and increasing power consumption, thus affecting the normal operation of the entire chip.
  • RS232 communication chip: SP3232. DB9 Interface Type: Female.
  • Operating voltage: 3V-5V; with four bidirectional transient suppression diode signal voltage protection.

Description

RS232 communication chip: SP3232.
DB9 Interface Type: Female.
Operating voltage: 3V-5V;
Overvoltage protection: YES (with four bidirectional transient suppression diode signal voltage protection.)
Hardware flow control: YES.
RS232 signal outside lead: YES (reserved RS232 signal pin hole);
DuPont Line: YES (Package includes four 20cm high quality DuPont wires);
Interface:
TXD RXD VCC GND RTS CTS (TTL);
TXD RXD GND RTS CTS (RS232);
The back of the module with a connection diagram;

Module instructions
1, one end connected to the MCU, the other end connected to a PC serial port or other DB9 plug case
VCC: 3V-5V
GND: Connect to GND
TTL signal terminal
TXD: Connect to MCU.RXD (Signal Flow: MCU.RXD > SP3232 >> PC.RXD)
CTS: Connected MCU.CTS (Signal flow: MCU.CTS > SP3232 >> PC.CTS)
2, one end connected to the MCU, the other end through the pin hole to connect the RS232 signal (default is not soldered RS232 pin)
VCC: 3V-5V
GND: Connect to GND
TTL signal terminal
TXD: Connect to MCU.RXD (Signal Flow: MCU.RXD > SP3232)
CTS: Connected MCU.CTS (Signal flow: MCU.CTS > SP3232)
RS232 signal terminal
TXD: Connect RS232.RXD (Signal flow direction: SP3232 >> RS232.RXD)
RXD: Connect to RS232.TXD (Signal flow direction: SP3232> RS232.CTS)

Package Included:
1xRS232 to TTL Serial Port Module
4x20cm DuPont wires

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