MOD-USB-RS232 development board Users Manual All boards produced by Olimex are ROHS compliant Revision Initial, May 2011 Copyright(c) 2011, OLIMEX Ltd, All rights reserved Page 1 INTRODUCTION: MOD-USB-RS232 is module board with PIC18F14K50 microcontroller. It is a simple USB to UART converter that features UEXT. It can be used to add Virtual Com Port to other Olimex s module, or development board, with UEXT, but without Com Port. The board can be configured in both device and host mode, de- pending on jumpers 3 RX/3 TX and 4 TX/4 RX (see Jumper Description below). For using MOD-USB-RS232 with some of our modules, it s jumpers has to be configured for host mode. For using MOD-USB-RS232 with some of our development boards, it s jumpers has to be configured for device mode. BOARD FEATURES: MCU: PIC18F14K50 20-Pin USB Flash Microcontrollers with nanoWatt XLP Technology. mini USB connector status led male UEXT connector plus 10 pin cable for it RESET circuit FR-4, 1.5 mm, red soldermask, component print Dimensions: 35.70 x 25.83 mm (1.41 x 1.02 ) ELECTROSTATIC WARNING: The MOD-USB-RS232 board is shipped in protective anti-static packaging. The board must not be subject to high electrostatic potentials. General practice for working with static sensitive devices should be applied when working with this board. BOARD USE REQUIREMENTS: Cables: The cable you will need depends on the programmer you use. If you use PIC-ICD2-POCKET, or PIC-Kit3, you will need USB A-B cable. For PIC-ICD2- TINY, you will need RS232 cable. For PIC-ICD2, you will need USB A-B cable, or RS232 cable. You will need adapter PIC-ICSP for programming, because the board s ICSP connector is not Microchip s standard connector, it is a mini type one. Hardware: Programmer PIC-ICD2-POCKET, PIC-ICD2, PIC-ICD2- TINY, PIC-Kit3, or other compatible programming tool. Software: MPLAB IDE Note: This microcontroller does not support debug functionality. Page 2