Evaluates: MAX6951 19-2180 Rev 1 5/07 MAX6951 Evaluation Kit General Description Features The MAX6951 evaluation kit (EV kit) is an assembled and Eight-Digit 7-Segment + dp Common-Cathode tested printed-circuit board (PCB) that demonstrates the Display MAX6951 serially interfaced 8-digit LED display driver SPI-Compatible Serial Interface IC. The EV kit is powered by a user-supplied +4VDC to +6.5VDC power supply. A configurable +3.3V or user- Configurable Built-In LDO Linear Regulated Power configurable low-dropout (LDO) linear regulated power Supply Demonstrates +3.3V or Other Voltages supply provides power for the entire EV kit. An SPI- Reconfigurable for Stand-Alone Operation compatible serial interface is connected to an IBM PC- compatible computers parallel port for easy evaluation. (with an External Microcontroller) The EV kit can easily be reconfigured for interfacing with Easy-to-Use Menu-Driven Software a user-supplied microcontroller (stand-alone operation). Includes Windows 95/98-Compatible Software Windows 95/98-compatible software provides a user- friendly interface to demonstrate the various features of Assembled and Tested the MAX6951 IC. The program is menu driven and offers a graphic interface with control buttons. Windows Ordering Information NT/2000 support is available contact the factory for PART TEMP RANGE IC PACKAGE details. MAX6951EVKIT 0C to +70C* 16 QSOP-EP** Note: The MAX6951 EV kit software can be down- loaded from the Maxim website at www.maxim-ic.com/ MAX6951EVKIT+ 0C to +70C* 16 QSOP-EP** evkitsoftware. +Denotes a lead-free and RoHS-compliant EV kit. SPI is a trademark of Motorola, Inc. *This limited temperature range applies to the EV kit PCB only. Windows is a registered trademark of Microsoft Corp. The MAX6951 IC temperature range is -40C to +85C. **EP = Exposed pad. Component List DESIGNATION QTY DESCRIPTION DESIGNATION QTY DESCRIPTION 10F 20%, 16V X7R ceramic Red, two-digit, 7-segment common-cathode LED displays C1 1 capacitor (1812) D1D4 4 (0.560in) TDK C4532X7R1C106M Fairchild MAN6940 10F 10%, 10V tantalum C2 1 capacitor (A) 200mA, 25V Schottky diodes Kemet T494A106K010AT D5, D6 2 (SOT23) Fairchild BAT54C 0.1F 10%, 16V X7R ceramic J1 1 DB25 male right-angle connector C3, C4 2 capacitors (0603) Murata GRM188R71C104K J2 1 5-pin header R1, R2, R3 3 10k 5% resistors (0805) 47F, 6.3V low-ESR POSCAP (C) R4 1 93.1k 1% resistor (0805) C5 1 capacitor Sanyo 6TPA47M R5, R6 2 Not installed (0805) U1 1 MAX6951EEE+ (16-pin QSOP-EP) 18pF 5%, 50V C0G ceramic U2 1 MAX604ESA+ (8-pin SO) C6 1 capacitor (0603) U3 1 MAX1841EUB+ (10-pin MAX ) Murata GRM39C0G180J050AD 1 PCB: MAX6951 Evaluation Kit+ 1F, 16V X7R ceramic capacitor C7 1 (1206) Murata GRM42-6X7R105K016 MAX is a registered trademark of Maxim Integrated Products, Inc. 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.MAX6951 Evaluation Kit 3) Install the EV kit software on your computer by run- Component Suppliers ning the INSTALL.EXE program inside the temporary SUPPLIER PHONE WEBSITE folder. The program files are copied and icons are created in the Windows Start Programs menu. An Fairchild 888-522-5372 www.fairchildsemi.com uninstall program is included with the software. Semiconductor Select the UNINSTALL icon to remove the EV kit soft- KEMET Corp. 864-963-6300 www.kemet.com ware from the hard drive. Murata Mfg. 770-436-1300 www.murata.com 4) Connect the power-supply positive terminal to the Co., Ltd. VIN pad and negative terminal to the GND pad. SANYO NA 5) Turn on the power supply and set it to +4V. 619-661-6835 www.sanyodevice.com Corp. 6) Start the MAX6951 program by opening its icon in TDK Corp. 847-803-6100 www.component.tdk.com the Windows Start menu. Note: Indicate that you are using the MAX6951 when contacting 7) Observe as the program automatically detects the these component suppliers. parallel port address of the MAX6951 EV kit and starts the main program. Quick Start 8) Header J2 is provided to monitor the parallel port pins Required Equipment supplying the CLK P, CS P, DIN P (+5V signals), Before beginning, the following equipment is needed: and loopback signals. The CLK, CS, and DIN pads on the EV kits left side are +3.3V level-shifted signals IBM PC-compatible computer running Windows 95/98 from the MAX1841 level translator. Both signal loca- Computer monitor with 800 x 600 minimum screen tions can be used for monitoring. resolution Detailed Description Parallel printer port (25-pin female socket on the back of the computer) of Software Standard 25-pin, straight-through, male-to-female User Interface cable (printer extension cable) to connect the com- The user interface is easy to operate. A mouse or the puters parallel port to the MAX6951 EV kit Tab key can be used to navigate among various items of DC power supply capable of supplying between the main display panel. Upon starting the program, the +4V to +6.5V and at least 500mA current MAX6951 EV kit display is programmed to initialize in Normal mode, display 8-digits in No-decode mode, Note: In the following sections, software-related items blinking at a Slow Rate with an 8/16 (50% duty cycle) are identified by bolding. Text in bold refers to items display intensity, and display the contents of the initial- directly from the EV kit software. Text in bold and ized MAX6951 SRAM Plane P0 and P1 contents. The underlined refers to items from the Windows 95/98 MAX6951 EV kit 8-digit LED display should alternate operating system. between HELLO---- and ----6951. Figure 1 is the main Procedure panel for the MAX6951 EV kit. The MAX6951 EV kit is fully assembled and tested. Main Panel Display Controls Follow the steps below to verify board operation. The Display mode group of radio buttons determines the Caution: Do not turn on the power supply until all mode of operation of the MAX6951 EV kit. Clicking on the connections are completed. Shutdown radio button puts the MAX6951 EV kit in shut- 1) Connect a cable from the computers parallel port to down mode. The display is blank and the EV kit draws the the MAX6951 EV kit. Use a straight-through, 25-pin, least amount of current in this mode. Selecting the female-to-male cable. The EV kit software uses a Normal radio button places the MAX6951 EV kit in the loopback connection to confirm that the correct port normal mode of operation. Clicking on the Test radio but- has been selected. ton puts the MAX6951 EV kit in test mode. All eight digits 2) Visit the Maxim website (www.maxim-ic.com/evkit- and all segment LEDs on the MAX6951 EV kit are illumi- software) to download the latest version of the EV kit nated with a 50% duty cycle (8/16). To change the blink software, 6951Rxx.ZIP. Save the EV kit software to a rate, click on one of the Blink Rate radio buttons. Once temporary folder and uncompress the ZIP file. selected, the Blink Rate can be adjusted by using the 2 Evaluates: MAX6951