19-0677; Rev 0; 11/06 USB-to-COM Port Adapter Board User Guide The USBTO232 is an adapter board that converts a PC’s USB port into a standard COM port. A COM port is also known as the standard serial port that uses Recommended Standard 232 (RS-232). The USBTO232 is included with selected Maxim EV kits and EV systems that were originally designed for the PC COM port and later updated to also support the USB port. Data sheets for EV kits and EV systems that can use the USBTO232 have been updated to reflect compatibility and also provide ordering information. Use of the USBTO232 in applications other than those EV kits specified by Maxim is not supported. Important: Before using the USBTO232, see the Quick Start section of this data sheet to correctly install the USB driver for the appropriate Windows ® operating system. Windows is a registered trademark of Microsoft Corp. Features USB Powered USB Driver for Windows 98SE/2000/XP Operating Systems USB and I/O Power LED Indicators Two GPIO LED Indicators USB Cable Included 8-Pin Signal Header Proven PCB Layout Fully Assembled and Tested Ordering Information PART PC INTERFACE OPERATING SYSTEMS SUPPORTED USBTO232+ USB Windows 98SE/2000/XP + Denotes lead-free and RoHS compliance. Component List DESIGNATION QTY 0.01µF ±10%, 50V X7R ceramic capacitor (0603) TDK C1608X7R1H103K P1 1 USB type B right-angle female receptacle connector Assmann AU-Y1007-R 2 47pF ±5%, 50V COG ceramic capacitors (0603) TDK C1608C0G1H470J P2 1 Short DB9 right-angle male receptacle connector (without cable-locking screws) 7 0.1µF ±10%, 16V X7R ceramic capacitors (0603) TDK C1608X7R1C104K R1, R2 2 270Ω ±5% resistors (0603) (use lead-free parts only) U1 1 USB-to-UART converter FTDI FT232RL (28-pin SSOP) U2 1 MAX213EEAI+ (28-pin SSOP) — 3 Shunts — 1 USBTO232+ PCB — 1 USB high-speed A-to-B 6ft cable DESIGNATION QTY C1 1 C2, C3 C4–C8, C11, C12 C9 1 DESCRIPTION 4.7µF ±10%, 6.3V X5R ceramic capacitor (0603) TDK C1608X5R0J475K C10 1 1µF ±10%, 6.3V X5R ceramic capacitor (0603) TDK C1608X5R0J105K D1 1 Red LED (0603) Panasonic LNJ208R8ARA 1 Green LED (0603) Stanley Electric BG1111C-TR Panasonic LNJ314G8TRA D2 FB1 1 40Ω @ 100MHz, 1.5A ferrite bead (0805) Steward MI0805K400R-10 H1 1 8-pin header JU1, JU2, JU3 3 3-pin headers DESCRIPTION Component Supplier SUPPLIER TDK PHONE 847-803-6100 WEBSITE www.component.tdk.com Note: Indicate the Maxim EV kit that you are using when contacting this component supplier. ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. 1 USBTO232 General Description USBTO232 USB-to-COM Port Adapter Board User Guide Quick Start The following instructions are for installing USB drivers and the EV kit software. Once the USB drivers and EV kit software have been installed, refer to the Quick Start section of the appropriate EV kit data sheet for EV kitspecific instructions. Recommended Equipment • USBTO232 board (USB cable included) • Maxim EV kit (or EV system) with a COM port PC connection • Corresponding EV kit data sheet • User-supplied PC with a USB port Note: In the following sections, software-related items are identified by bolding. Text in bold refers to items directly from the EV kit software. Text in bold and underlined refers to items from the Windows 98SE/2000/XP operating system. Procedure 1) Visit the Maxim website (www.maxim-ic.com/evkitsoftware) to download the latest version of the EV kit software that supports USB. Save the EV kit software to a temporary folder and uncompress the file, if it is a .zip file. 2) Install the EV kit software on your computer by running the INSTALL.EXE program inside the temporary folder. The program files are copied to C:\Program Files\MAXxxxxx and icons are created in the Windows Start | Programs menu. 3) Uncompress the USB driver file copied into C:\Program Files\MAXxxxxx after the software is installed. If you are using Windows 98SE, uncompress the USB_Driver_98_ME_V1.09.zip file. If you are using Windows 2000/XP, uncompress the USB_Driver_XP_2K_V2.00.zip file. Uncompress the contents of the .zip file into C:\Program Files\MAXxxxxx. 4) Verify that the following USBTO232 jumpers are in the default positions: JU1: (1-2) JU2: (2-3) JU3: (2-3) 5) Connect the included USB cable from the PC’s USB port (Type A) to the Type B USB connector on the USBTO232 board. 6) Verify that the red VCC power LED (D1) lights up. Also verify that the green VCCIO power LED (D2) lights up. 7) Go to the appropriate USB Driver Installation section in this data sheet for the version of Windows you are using and return to step 8 when finished. For example, if you are using Windows XP, go to the Windows XP USB Driver Installation section. Windows XP: Page 3 Windows 2000: Page 11 Windows 98SE: Page 25 8) Connect the USBTO232 board to the EV kit (or EV system) by connecting the male DB9 connector on the USBTO232 board to the female DB9 connector on the EV kit. 9) Refer to the Quick Start section of the appropriate EV kit data sheet for further EV kit-specific instructions. Detailed Description of Hardware The USBTO232 is an adapter board that converts a PC’s USB port into a standard COM port. The USBTO232 board has three configurable jumpers: JU1, JU2, and JU3. Jumper JU1 is the I/O supply selection (see Table 1), jumper JU2 is the USB power-supply indicator (see Table 2), and jumper JU3 is the 3.3V power-supply indicator (see Table 3). Table 1. I/O Supply Selection (VCCIO) JUMPER SHUNT POSITION JU1 DESCRIPTION 1-2* VCCIO = VCC = 5V 2-3 VCCIO = VCC30 = 3.3V *Default position. Table 2. USB Power-Supply Indicator (VCC–D1) JUMPER SHUNT POSITION DESCRIPTION 1-2 General-purpose LED connected to CBUS0 2-3* Indicates USB power present when red LED (D1) is lit JU2 *Default position. Table 3. 3.3V Power-Supply Indicator (VCC30–D2) JUMPER SHUNT POSITION DESCRIPTION 1-2 General-purpose LED connected to CBUS1 2-3* Indicates regulated 3.3V power present when green LED (D2) is lit JU3 *Default position. 2 _______________________________________________________________________________________ USB-to-COM Port Adapter Board User Guide described above after 30 seconds, remove the USB cable from the USBTO232 board and reconnect it. Administrator privileges are required to install the USB device driver on Windows 2000/XP. Figure 1. Windows XP: Found New Hardware Wizard |Welcome Window _______________________________________________________________________________________ 3 USBTO232 Windows XP USB Driver Installation 1) Once the USBTO232 board is connected to the PC for the first time in Windows XP, a Found New Hardware Wizard | Welcome window appears, as shown in Figure 1. Choose the No, not this time selection and press the Next button to get started. If you do not see a window that is similar to the one USBTO232 USB-to-COM Port Adapter Board User Guide 2) A Found New Hardware Wizard | FTDI FT8U2XX Device window (Figure 2) appears next. This window asks What do you want the wizard to do?. Choose the Install from a list or specific location (Advanced) option and press the Next button. Figure 2. Windows XP: Found New Hardware Wizard | FTDI FT8U2XX Device Window 4 _______________________________________________________________________________________ USB-to-COM Port Adapter Board User Guide EV kit being evaluated). Press the Next button when finished. Figure 3. Windows XP: Found New Hardware Wizard | Search Options Window _______________________________________________________________________________________ 5 USBTO232 3) At the Found New Hardware Wizard | Search Options window (Figure 3), choose the Search for the best driver in these locations option and check the Include this location in the search checkbox. Press the Browse button and navigate to the path: C:\Program Files\MAXxxxxx (where xxxxx represents the Maxim IC part number on the USBTO232 USB-to-COM Port Adapter Board User Guide 4) The Found New Hardware Wizard | Complete window appears (Figure 4). Press the Finish button. Figure 4. Windows XP: Found New Hardware Wizard | Complete Window 6 _______________________________________________________________________________________ USB-to-COM Port Adapter Board User Guide USBTO232 5) A Found New Hardware Wizard | Welcome window appears again (Figure 5). Choose the No, not this time selection and press the Next button. Figure 5. Windows XP: Found New Hardware Wizard | Welcome Window _______________________________________________________________________________________ 7 USBTO232 USB-to-COM Port Adapter Board User Guide 6) The next window is the Found New Hardware Wizard | USB Serial Port window (Figure 6). This window asks What do you want the wizard to do?. Choose the Install from a list or specific location (Advanced) option and press the Next button. Figure 6. Windows XP: Found New Hardware Wizard | USB Serial Port Window 8 _______________________________________________________________________________________ USB-to-COM Port Adapter Board User Guide USBTO232 7) At the Found New Hardware Wizard | Search Options window (Figure 7), choose the Search for the best driver in these locations option and check the Include this location in the search checkbox. Press the Browse button and navigate to the path: C:\Program Files\MAXxxxxx. Press the Next button when finished. Figure 7. Windows XP: Found New Hardware Wizard | Search Options Window _______________________________________________________________________________________ 9 USBTO232 USB-to-COM Port Adapter Board User Guide 8) The next window is the Found New Hardware Wizard | Complete window (Figure 8). Press the Finish button. 9) When finished, return to step 8 of the USBTO232 Quick Start section. Figure 8. Windows XP: Found New Hardware Wizard | Complete Window 10 ______________________________________________________________________________________ USB-to-COM Port Adapter Board User Guide USBTO232 Windows 2000 USB Driver Installation 1) Once the USBTO232 board is connected to the PC for the first time in Windows 2000, a Found New Hardware window appears, as shown in Figure 9. Figure 9. Windows 2000: Found New Hardware Window ______________________________________________________________________________________ 11 USBTO232 USB-to-COM Port Adapter Board User Guide 2) A Found New Hardware Wizard | Welcome window then appears (Figure 10). Press the Next button. Figure 10. Windows 2000: Found New Hardware Wizard | Welcome Window 12 ______________________________________________________________________________________ USB-to-COM Port Adapter Board User Guide USBTO232 3) At the Found New Hardware Wizard | Install Hardware Device Drivers window (Figure 11), choose Search for a suitable driver for my device (recommended) and press the Next button when finished. Figure 11. Windows 2000: Found New Hardware Wizard | Install Hardware Device Drivers Window ______________________________________________________________________________________ 13 USBTO232 USB-to-COM Port Adapter Board User Guide 4) The Found New Hardware Wizard | Locate Driver Files window appears next (Figure 12). Check the Specify a location checkbox and press the Next button when finished. Figure 12. Windows 2000: Found New Hardware Wizard | Locate Driver Files Window 14 ______________________________________________________________________________________ USB-to-COM Port Adapter Board User Guide USBTO232 5) The next window is the Found New Hardware Wizard | Path window (Figure 13). Press the Browse button and choose the path C:\Program Files\MAXxxxxx. Press the OK button when finished. Figure 13. Windows 2000: Found New Hardware Wizard | Path Window ______________________________________________________________________________________ 15 USBTO232 USB-to-COM Port Adapter Board User Guide 6) The Found New Hardware Wizard | Driver Files Search Results window is shown in Figure 14. Press the Next button after the wizard finds the driver. Figure 14. Windows 2000: Found New Hardware Wizard | Driver Files Search Results Window 16 ______________________________________________________________________________________ USB-to-COM Port Adapter Board User Guide USBTO232 7) At the Found New Hardware Wizard | Complete window (Figure 15), press the Finish button. Figure 15. Windows 2000: Found New Hardware Wizard | Complete Window ______________________________________________________________________________________ 17 USBTO232 USB-to-COM Port Adapter Board User Guide 8) A Found New Hardware window appears for the USB Serial Port, as shown in Figure 16. Figure 16. Windows 2000: Found New Hardware Window 18 ______________________________________________________________________________________ USB-to-COM Port Adapter Board User Guide USBTO232 9) When the Found New Hardware Wizard | Welcome window appears (Figure 17), press the Next button. Figure 17. Windows 2000: Found New Hardware Wizard | Welcome Window ______________________________________________________________________________________ 19 USBTO232 USB-to-COM Port Adapter Board User Guide 10) At the Found New Hardware Wizard | Install Hardware Device Drivers window (Figure 18), choose Search for a suitable driver for my device (recommended) and press the Next button when finished. Figure 18. Windows 2000: Found New Hardware Wizard | Install Hardware Device Drivers Window 20 ______________________________________________________________________________________ USB-to-COM Port Adapter Board User Guide USBTO232 11) The Found New Hardware Wizard | Locate Driver Files window (Figure 19) appears. Check the Specify a location checkbox and press the Next button when finished. Figure 19. Windows 2000: Found New Hardware Wizard | Locate Driver Files Window ______________________________________________________________________________________ 21 USBTO232 USB-to-COM Port Adapter Board User Guide 12) At the Found New Hardware Wizard | Path window (Figure 20), press the Browse button and choose the path C:\Program Files\MAXxxxxx. Press the OK button when finished. Figure 20. Windows 2000: Found New Hardware Wizard | Path Window 22 ______________________________________________________________________________________ USB-to-COM Port Adapter Board User Guide USBTO232 13) The Found New Hardware Wizard | Driver Files Search Results window ( Figure 21) appears. Press the Next button after the wizard finds the driver. Figure 21. Windows 2000: Found New Hardware Wizard | Driver Files Search Results Window ______________________________________________________________________________________ 23 USBTO232 USB-to-COM Port Adapter Board User Guide 14) The next window is the Found New Hardware Wizard | Complete window (Figure 22). Press the Finish button. 15) When finished, return to step 8 of the USBTO232 Quick Start section. Figure 22. Windows 2000: Found New Hardware Wizard | Complete Window 24 ______________________________________________________________________________________ USB-to-COM Port Adapter Board User Guide USBTO232 Windows 98SE USB Driver Installation 1) Once the USBTO232 board is connected to the PC for the first time in Windows 98SE, an Add New Hardware Wizard | Start window appears, as shown in Figure 23. Press the Next button to get started. Figure 23. Windows 98SE: Add New Hardware Wizard | Start Window ______________________________________________________________________________________ 25 USBTO232 USB-to-COM Port Adapter Board User Guide 2) An Add New Hardware Wizard | Options window appears next (Figure 24). Choose the Search for the best driver for your device (Recommended) option and press the Next button when finished. Figure 24. Windows 98SE: Add New Hardware Wizard | Options Window 26 ______________________________________________________________________________________ USB-to-COM Port Adapter Board User Guide USBTO232 3) At the Add New Hardware Wizard | Specify Location window (Figure 25), check the Specify a location checkbox and press the Browse button. Choose the path C:\Program Files\MAXxxxxx\ R10906 (where xxxxx represents the Maxim IC part number on the EV kit being evaluated). Press the Next button when finished. Figure 25. Windows 98SE: Add New Hardware Wizard | Specify Location Window ______________________________________________________________________________________ 27 USBTO232 USB-to-COM Port Adapter Board User Guide 4) The Add New Hardware Wizard | Search window appears (Figure 26). Press the Next button once the driver has been located. Figure 26. Windows 98SE: Add New Hardware Wizard | Search Window 28 ______________________________________________________________________________________ USB-to-COM Port Adapter Board User Guide 6) When finished, return to step 8 of the USBTO232 Quick Start section. Figure 27. Windows 98SE: Add New Hardware Wizard | Complete Window ______________________________________________________________________________________ 29 USBTO232 5) The next window is the Add New Hardware Wizard | Complete window (Figure 27). Press the Finish button to complete the driver installation. 30 P1 C8 0.1µF VCC P1-4 P1-3 P1-2 P1-1 DTR# CTS# RI# DCD# C9 4.7µF FB1 C3 47pF C2 47pF C1 0.01µF SLEEP# USB TYPE B VCC N.C. N.C. 2 11 6 10 12 28 U1 FT232RL VCCI0 4 2 JU1 3 CBUS0 H1 DSR 17 14 13 22 23 20 C11 0.1µF C12 0.1µF RESET# VCC30 CBUS3 CBUS2 CBUS1 H1-8 H1-7 H1-6 H1-5 H1-4 H1-3 H1-2 H1-1 HEADER 8 PIN C5 0.1µF C4 0.1µF VCC C10 1µF CBUS0 VCC R1IN 10 14 1 D1 GND C1- U2 MAX213 JU2 2 3 R1 270Ω VCC R1OUT T1IN T2IN R2OUT R2IN T2OUT T1OUT 13 V+ 12 C1+ 11 9 8 7 9 1 5 4 3 2 1 T3 OUT 6 VCC RXDATA RTS TXDATA DTR 3 5 VCC30 RESET# 19 3V3OUT CBUS3 CBUS2 CBUS1 CBUS0 VCC DSR# TXD RTS# RXD AGND GND GND GND TEST 25 7 18 21 26 DTR# CTS# RI# DCD# CBUS4 OSCO 27 OSCI 24 8 1 USBDM 15 USBDP 16 VCC JU3 VCC 1 R2 270Ω VCC30 15 16 17 18 19 20 21 22 23 24 25 26 27 28 3 2 D2 C2+ C2- V- R5IN R5OUT T3IN T4IN R4OUT R4IN EN SHDN R3OUT R3IN T4OUT CTS RI CTS RTS DSR DTR TXDATA RXDATA C6 0.1µF CBUS1 C7 0.1µF DCD DCD# DTR# RI# RI SLEEP# CTS# DCD P2-9 P2-8 P2-7 P2-6 P2-5 P2-4 P2-3 P2-2 P2-1 DB9 TYPE DTE P2 USBTO232 USB-to-COM Port Adapter Board User Guide Figure 28. USBTO232 Schematic ______________________________________________________________________________________ USB-to-COM Port Adapter Board User Guide USBTO232 Figure 29. USBTO232 Component Placement Guide—Component Side Figure 30. USBTO232 PCB Layout—Component Side Figure 31. USBTO232 PCB Layout—Solder Side Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 31 © 2006 Maxim Integrated Products CARDENAS is a registered trademark of Maxim Integrated Products, Inc.