2. Soldering the headers Before using your click board, make sure to solder 1x8 male headers to both left and right side of the board. Two 1x8 male headers are included with the board in the package. 1 RS232 click 2 3 1. Introduction 4. Essential features The RS232 DB9 port (9 pins) and the MAX3232 IC constitute a serial communications connector. RS232 is mostly used for industrial machines, networking equipment and scientific instruments, as Turn the board upside down so that Turn the board upward again. Make sure well as for computer peripherals. The board the bottom side is facing you upwards. to align the headers so that they are features two jumper positions to connect Place shorter pins of the header into the perpendicular to the board, then solder the RTS (J2) and CTS (J3) lines to the target appropriate soldering pads. pins carefully. board (zero-ohm SMD jumpers not provided in the package). RS232 click is a simple solution for adding 3. Plugging the board in RS232 serial communications to your design. click The board features a standard RS232 Once you have soldered the headers DB9 port and a MAX3232 IC, along with your board is ready to be placed into the BOARD a mikroBUS host socket, three jumpers desired mikroBUS socket. Make sure to www.mikroe.com and a power indicator LED. RS232 click align the cut in the lower-right part of the communicates with the target board through board with the markings on the silkscreen RS232 click v100 Manual mikroBUS RX (RXD), TX (TXD), CS (RTS), and at the mikroBUS socket. If all the pins are ver. 1.00 INT (CTS) lines. RS232 click is designed to aligned correctly, push the board all use either a 3.3V or 5V power supply. the way into the socket. 6. SMD Jumpers 5. RS232 click Board Schematic To switch between 3.3V and 5V power supplies use the PWR SEL zer-ohm SMD CN1 jumper. By default its soldered in the 3.3V VCC VCC VCC position. R2 R3 1 1K 1K J1 U1 6 TXD 11 14 2 T1IN T1OUT J2 RS232 CTS 9 8 7 RTS R2OUT R2IN RXD 12 13 3 7. Code Examples RS232 RTS R1OUT R1IN RS232 RTS 10 7 8 T2IN T2OUT AN PWM 4 CTS Once you have done all the necessary RST INT 1 4 9 RTS RXD C1+ C2+ CS RX C1 C3 5 TXD preparations, its time to get your click board SCK TX 100nF 3 5 470nF J3 C1- C2- MISO SCL CTS up and running. We have provided examples MOSI SDA RS232 CTS C2 470nF 6 2 C4 470nF V- V+ +3.3V +5V for mikroC , mikroBasic and mikroPascal GND GND 15 16 GND VCC VCC MIKROBUS DEVICE CONN. DB9 CONNECTOR compilers on our Libstock website. Just MAX3232 download them and you are ready to startcom VCC VCC R1 2K2 C5 E1 8. Support 100nF 10uF LD1 MikroElektronika oers ff Free Tech Support (www.mikroe.com/support/) until the end of the products lifetime, so if something goes wrong, were ready and willing to help MikroElektronika assumes no responsibility or liability for any errors or inaccuracies that may appear in the present document. Specification and information contained in the present schematic are subject to change at any time without notice. Copyright 2014 MikroElektronika. All rights reserved. MAX3232 5 1 9 6