USBTO232 19-0677 Rev 0 11/06 USB-to-COM Port Adapter Board User Guide General Description Features The USBTO232 is an adapter board that converts a USB Powered PCs USB port into a standard COM port. A COM port is USB Driver for Windows 98SE/2000/XP Operating also known as the standard serial port that uses Systems Recommended Standard 232 (RS-232). USB and I/O Power LED Indicators The USBTO232 is included with selected Maxim EV kits Two GPIO LED Indicators and EV systems that were originally designed for the PC COM port and later updated to also support the USB Cable Included USB port. Data sheets for EV kits and EV systems that 8-Pin Signal Header can use the USBTO232 have been updated to reflect Proven PCB Layout compatibility and also provide ordering information. Use of the USBTO232 in applications other than those Fully Assembled and Tested EV kits specified by Maxim is not supported. Ordering Information Important: Before using the USBTO232, see the Quick PC OPERATING SYSTEMS Start section of this data sheet to correctly install the PART INTERFACE SUPPORTED USB driver for the appropriate Windows operating system. USBTO232+ USB Windows 98SE/2000/XP Windows is a registered trademark of Microsoft Corp. + Denotes lead-free and RoHS compliance. Component List DESIGNATION QTY DESCRIPTION DESIGNATION QTY DESCRIPTION USB type B right-angle female 0.01F 10%, 50V X7R ceramic C1 1 capacitor (0603) P1 1 receptacle connector TDK C1608X7R1H103K Assmann AU-Y1007-R 47pF 5%, 50V COG ceramic Short DB9 right-angle male capacitors (0603) receptacle connector (without C2, C3 2 P2 1 TDK C1608C0G1H470J cable-locking screws) 270 5% resistors (0603) 0.1F 10%, 16V X7R ceramic R1, R2 2 C4C8, C11, (use lead-free parts only) 7 capacitors (0603) C12 TDK C1608X7R1C104K USB-to-UART converter U1 1 FTDI FT232RL (28-pin SSOP) 4.7F 10%, 6.3V X5R ceramic C9 1 capacitor (0603) U2 1 MAX213EEAI+ (28-pin SSOP) TDK C1608X5R0J475K 3 Shunts 1 USBTO232+ PCB 1F 10%, 6.3V X5R ceramic C10 1 capacitor (0603) 1 USB high-speed A-to-B 6ft cable TDK C1608X5R0J105K Red LED (0603) D1 1 Panasonic LNJ208R8ARA Component Supplier Green LED (0603) SUPPLIER PHONE WEBSITE D2 1 Stanley Electric BG1111C-TR Panasonic LNJ314G8TRA TDK 847-803-6100 www.component.tdk.com Note: Indicate the Maxim EV kit that you are using when con- 40 100MHz, 1.5A ferrite bead tacting this component supplier. (0805) FB1 1 Steward MI0805K400R-10 H1 1 8-pin header JU1, JU2, JU3 3 3-pin headers Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct at 1-888-629-4642, or visit Maxims website at www.maxim-ic.com.USB-to-COM Port Adapter Board User Guide 7) Go to the appropriate USB Driver Installation sec- Quick Start tion in this data sheet for the version of Windows The following instructions are for installing USB drivers you are using and return to step 8 when finished. and the EV kit software. Once the USB drivers and EV For example, if you are using Windows XP, go to kit software have been installed, refer to the Quick Start the Windows XP USB Driver Installation section. section of the appropriate EV kit data sheet for EV kit- Windows XP: Page 3 specific instructions. Windows 2000: Page 11 Recommended Equipment Windows 98SE: Page 25 USBTO232 board (USB cable included) 8) Connect the USBTO232 board to the EV kit (or EV Maxim EV kit (or EV system) with a COM port PC system) by connecting the male DB9 connector on connection the USBTO232 board to the female DB9 connector Corresponding EV kit data sheet on the EV kit. User-supplied PC with a USB port 9) Refer to the Quick Start section of the appropriate EV Note: In the following sections, software-related items kit data sheet for further EV kit-specific instructions. are identified by bolding. Text in bold refers to items Detailed Description of Hardware directly from the EV kit software. Text in bold and underlined refers to items from the Windows The USBTO232 is an adapter board that converts a 98SE/2000/XP operating system. PCs USB port into a standard COM port. The USBTO232 board has three configurable jumpers: JU1, Procedure JU2, and JU3. Jumper JU1 is the I/O supply selection 1) Visit the Maxim website (www.maxim-ic.com/evkit- (see Table 1), jumper JU2 is the USB power-supply software) to download the latest version of the EV indicator (see Table 2), and jumper JU3 is the 3.3V kit software that supports USB. Save the EV kit soft- power-supply indicator (see Table 3). ware to a temporary folder and uncompress the file, if it is a .zip file. Table 1. I/O Supply Selection (VCCIO) 2) Install the EV kit software on your computer by run- JUMPER SHUNT POSITION DESCRIPTION ning the INSTALL.EXE program inside the tempo- 1-2* VCCIO = VCC = 5V rary folder. The program files are copied to JU1 C: Program Files MAXxxxxx and icons are creat- 2-3 VCCIO = VCC30 = 3.3V ed in the Windows Start Programs menu. *Default position. 3) Uncompress the USB driver file copied into Table 2. USB Power-Supply Indicator C: Program Files MAXxxxxx after the software is installed. If you are using Windows 98SE, uncom- (VCCD1) press the USB Driver 98 ME V1.09.zip file. If you JUMPER SHUNT POSITION DESCRIPTION are using Windows 2000/XP, uncompress the General-purpose LED USB Driver XP 2K V2.00.zip file. Uncompress 1-2 connected to CBUS0 the contents of the .zip file into C: Program JU2 Files MAXxxxxx. Indicates USB power present 2-3* 4) Verify that the following USBTO232 jumpers are in when red LED (D1) is lit the default positions: *Default position. JU1: (1-2) Table 3. 3.3V Power-Supply Indicator JU2: (2-3) (VCC30D2) JU3: (2-3) JUMPER SHUNT POSITION DESCRIPTION 5) Connect the included USB cable from the PCs USB General-purpose LED port (Type A) to the Type B USB connector on the 1-2 connected to CBUS1 USBTO232 board. JU3 Indicates regulated 3.3V 6) Verify that the red VCC power LED (D1) lights up. 2-3* power present when green Also verify that the green VCCIO power LED (D2) LED (D2) is lit lights up. *Default position. 2 USBTO232