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ماژول مبدل RS232 به TTL دارای چیپ MAX3232 و سوکت مادگی
Introduction:
1, DB9 female connector;
2, the output seat straight needle and looper optional;
3, TTL level 5V-3.3V adaptive;
4, serial port to take power, the module can be stable and passive work;
5, when using 3-wire serial port, the power supply can be applied to the module;
6, the module size: 33mm * 15mm.
Instructions:
1, the module passive working condition is the serial port must be 9-wire system, 3-wire system (TXD, RXD, GND) need to input 3.3-5V power supply module at VCC + 5V to work;
2, the module power input only does not output;
3, if the wiring, the module can not be normal communication can be transferred TXD and RXD two lines to try;
4, the most simple module test methods: short circuit module TXD and RXD, open the serial debugging tools, just send something, the module is returned to the original module is no problem.