MIC384 Evaluation Board and DemoWare Software Micrel MIC384 Evaluation Board DemoWare™ Software • 3.3V, 100mA regulated power supply • Power supply leads or cables • SMBus™/I2C™ compatible serial bus host for communication with the MIC384 • Cable for serial host connection, as appropriate In either case, the following additional items are useful, but not required: • Logic probe(s) • Voltmeter(s) • SMBus/I2C bus analyzer • Component cooling spray • Heat gun General Description of the Evaluation Board This board demonstrates use of the MIC384 Three-Zone Thermal Supervisor. It is designed to support rapid prototyping of circuits employing the MIC384. Two MMBT3906 transistors (surface mount equivalent to 2N3906) are included on the board in order to demonstrate the MIC384’s ability to measure the temperature of remote PN junctions. A connector permits use of an off-board remote diode or transistor in place of either of the on-board remote transistors. User configurable jumpers select the MIC384’s slave address and configure the remote sensor connections. An LED on the board reports the status of the interrupt request output, /INT. The LED may be disabled by opening a jumper. For use with Micrel’s DemoWare demonstration software, the MIC384 evaluation board may be connected directly to a PC parallel port via a DB25M connector. As an option, the user may install a 4-pin ACCESS.bus™-type connector to interface the evaluation board with a serial bus host such as the IPort™ I2C Host Adapter from MCC Corporation. An additional general-purpose 8-pin header can also be used to interface any I2C/SMBus host to the board. General Description The Micrel MIC384 evaluation board and DemoWare Software demonstrate the operation and features of the MIC384 Three-Zone Thermal Supervisor. The MIC384 is a versatile digital thermal supervisor capable of measuring temperature using its internal sensor and two inexpensive external sensors or embedded silicon diodes such as those found in higher performance CPUs and FPGAs. This manual describes how to use the evaluation board and the companion software. Getting Started What is Included Review the packing list in Table 1 to confirm that you received all listed items. If any of the items are missing or damaged, contact Micrel Semiconductor. The latest version of all Micrel data sheets may be obtained from our website at www.micrel.com. Item 1 2 3 4 Qty 1 Description MIC384 Evaluation Board with Jumpers Installed 1 MIC384 Evaluation Board and DemoWare Software Manual (this document) 1 MIC384 Data Sheet 2 MIC384BM Samples Table 1. Packing List What You Must Provide If the board is to be used with the MIC384 DemoWare, no additional items are required except for a suitable host PC. All power for the board will be drawn from the PC parallel port. The board may be plugged directly into the DB25 connector on the host PC. It may be more convenient, however, to use a cable between the PC and the board. A standard, straightthrough, DB25 male-to-female parallel printer cable may be used. If a non-PC host is used, the following items are required for use with the MIC384 evaluation board: DemoWare is a trademark of Micrel, Inc. SMBus is a trademark of Intel Corporation. I2C is a trademark of Philips Electronics N.V. ACCESS.bus is a trademark of the ACCESS.bus Industry Group. IPort is a trademark of Microcomputer Control Corporation. Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 944-0970 • http://www.micrel.com February 2002 1 MIC384 Evaluation Board MIC384 Evaluation Board and DemoWare Software Micrel Optional SMBus Host Connector General-Purpose Signal Header P4 J1 S D A EXT VDD IN TEST VDD Test Points S C L I N T G N D C R I T A 0 V D D P3 /INT Address Configuration Jumpers JP3 A0 JP4 GND Remote Diode Selection Jumpers U1 SDA JP2 SCL Q2 Remote Off-Board Sensor Connection P2 /INT Remote Diode Selection Jumpers JP1 Micrel, Inc. 408-944-0800 MIC384 Evaluation Board Q1 Remote Off-Board Sensor Connection P1 PC PARALLEL PORT PC Parallel Port Connector Figure 1. MIC384 Evaluation Board Serial Bus Host Connector The optional user-installed SMBus host connector is Molex part #15-83-0064 shown in Figure 2. This Molex connector is a 4-conductor shielded receptacle. The pinout of this connector is shown below. The mating connector is a Molex part #1583-1564. See Appendix A for more information on these connectors. The serial bus signals are also present on singlerow header P4 and at test points TP4 and TP5. One or more of these connection points can be used in lieu of the specialized connector. The various serial bus connection points are summarized in Table 2. Powering the Board The MIC384 evaluation board can be powered via the host PC’s parallel printer port or an external power supply. Three options are available for powering the evaluation board. Option 1: For use with Micrel’s DemoWare demonstration software and a host PC, connect the board to the PC’s parallel printer port via the DB-25M connector (refer to schematic in “Hardware Reference”). Pins 1 and 2 of P3 should be shorted. Option 2: The board can be powered by an external power supply via TP1, “EXT VDD”, and TP2, “GND”. The positive connection should be made to TP1 and ground connection should be made to TP2. Pins 2 and 3 of P3 should be shorted. Option 3: The board can be powered by a serial bus host such as the MCC IPort via optional user-installed 4-pin Molex connector J1. Pin 3 of this connector is assigned to carry the power supply voltage from the host (See Figure 2). Pins 2 and 3 of P3 should be shorted. FRONT CLK VDD 3 4 DATA GND 2 1 Molex 15-83-0064 Figure 2. Pinout of J2 Serial Bus Host Connector MIC384 Evaluation Board 2 February 2002 MIC384 Evaluation Board and DemoWare Software Molex 15-83-0064 Pin # P4 Pin # Test Point Serial Data 2 1 TP5 Serial Clock 4 2 TP4 VDD 3 8 TP1 Signal GND 1 4 TP2 /INT N/A 3 TP6 Micrel If using a transistor, the base and collector should be shorted together at the transistor. The emitter and base-collector terminals are then connected to P1/P2. The emitter is connected to pin 2 of P1/P2; the base-collector junction should be connected to pin 1 of P1/P2. LED Indicator The LED on the evaluation board indicates the state of the / INT output. When an interrupt is generated by the MIC384, the signal at the /INT output pin goes from high to low. This causes the /INT LED to turn on. The /INT LED will turn off once the interrupt gets cleared. The LED indicator can be deactivated by opening jumper JP4. JP4 enables the /INT LED when shorted; opening the jumper disables the LED. Factory Settings The slave address is set to 1001000b=48h and remote onboard diodes Q1 and Q2 are connected to T1 and T2 respectively. Table 2. Serial Bus Connection Points Personal computer based host adapters, cables, bus analyzers and other useful items can be obtained from the sources listed in Appendix A. Slave Address Selection The MIC384 slave address must be established for communication with the serial bus host. It is established by setting the address pin A0 to either logic ‘1’ or logic ‘0’. Table 3 shows the jumper settings for selecting the slave address. The slave address of MIC384 is registered only during power-on and cannot be changed during operation. To change the MIC384 slave address, remove power, establish the new slave address and then reapply power. Remote Diode Selection The MIC384 senses the temperatures of remote PN junction connected to the T1 pin and T2 pin. This PN junction is generally either a diode-connected bipolar junction transistor or the embedded thermal diode inside an integrated circuit. Diode-connected 2N3906-type transistors, Q1 and Q2, are provided on the evaluation board. Header P1 and P2 can be used to connect to an off-board diode. Jumper JP1 selects between Q1 and the sensor connected to P1. Similarly jumper JP2 selects between Q2 and the sensor connected to P2. (Refer to Table 3.) Figure 3 shows several examples of remote diode connections. To minimize noise pickup, connections to an off-board diode should be made using twisted-pair or shielded twistedpair cable. Connections longer than a few inches or any connection in an electrically noisy environment should use shielded twisted-pair cable for optimal performance. (Note that the shield should be grounded only at P1/P2 on the evaluation board.) Suitable cable types include Belden’s part number 8442 unshielded twisted-pair (UTP) and Belden’s part number 8451 shielded twisted-pair (STP). JP1 2-3 1-2 2-3 1-2 2-3 1-2 2-3 1-2 Jumper Settings JP2 JP3 2-3 Shorted 2-3 Shorted 1-2 Shorted 1-2 Shorted 2-3 Open 2-3 Open 1-2 Open 1-2 Open February 2002 Typical PNP bipolar transistor used as remote sensor Twisted-Pair Cable E P B N P1/P2 C Figure 3a. Remote Diode Connections via P1/P2 Shielded Twisted-Pair Cable Typical PNP bipolar transistor used as remote sensor E P B N P1/P2 C Figure 3b. Remote Diode Connections via P1/P2 Twisted-Pair Cable or Shielded Twisted-Pair Cable (shielded twisted-pair cable shown) Embedded thermal diode (in CPU, etc.) E P B N P1/P2 C Figure 3c. Remote Diode Connections via P1/P2 Sensor T1 T2 Q1 Q2 Off-board via P1 Q2 Q1 Off-board via P2 Off-board via P1 Off-board via P2 Q1 Q2 Off-board via P1 Q2 Q2 Off-board via P2 Off-board via P1 Off-board via P2 Table 3. MIC384 Slave Address Configuration 3 MIC384 Slave Address Binary Hex 100 1000b 48h 100 1000b 48h 100 1000b 48h 100 1000b 48h 100 1001b 49h 100 1001b 49h 100 1001b 49h 100 1001b 49h MIC384 Evaluation Board MIC384 Evaluation Board and DemoWare Software Micrel Pull-up Resistors The MIC384 evaluation board includes a 4.7kΩ pull-up resistor on the serial data line and the serial clock line, and a 22kΩ resistor on the MIC384’s /INT output. When using a serial bus host such as the IPort, the host’s pull-up resistors should be deactivated. Hardware Reference Terminals Designator P3 P4 P1 P2 P5 J1 Test Points Description VDD selection jumper General purpose signal header Off-board remote sensor connection Off-board remote sensor connection Parallel port connector, DB25M PC, for use with Micrel DemoWare software Serial bus host connector, 4-pin Jumper Options Jumper Position JP4 Shorted Open JP3 Shorted Open JP2 1-2 2-3 JP1 1-2 2-3 P3 1-2 2-3 Designator TP1 TP2 TP3 TP4 TP5 TP6 Description EXTERNAL VDD IN GROUND VDD TEST SERIAL CLOCK SERIAL DATA INTERRUPT Function Enables /INT LED Disables /INT LED A0 = 0 A0 = 1 Off-board transistor/diode is used as remote sensor via P2 On-board transistor Q2 is used as remote sensor Off-board transistor/diode is used as remote sensor via P1 On-board transistor Q1 is used as remote sensor Use VDD from PC parallel port Use VDD from external VDD input or VDD from serial bus host Factory Setting Shorted Shorted Open Shorted Open Shorted Shorted *Pin number one of each header is denoted by a square pad on the PCB versus a round pad for all other pins. The pads are visible on the back side of the printed circuit board. MIC384 Evaluation Board 4 February 2002 MIC384 Evaluation Board and DemoWare Software Micrel Bill of Materials Item Part Number Manufacturer Description C1 ECS-F1CE225K Panasonic - ECG 2.2µF, 10V, tantalum capacitor Qty. C2 ECU-S1H104KBB Panasonic - ECG 0.1µF, 50V, 20% ceramic capacitor 1 C3 ECS-F1CE475K Panasonic - ECG 4.7µF, 10V tantalum capacitor 1 C4 K222J15C0GF5TL2 BC Components 2200pF, 50V, 5% ceramic capacitor 1 C5 K222J15C0GF5TL2 BC Components 2200pF, 50V, 5% ceramic capacitor 1 D1 BAT85 Diodes Inc. Schottky diode, 40V, 400mW, D0-35 1 D2 BAT85 Diodes Inc. Schottky diode, 40V, 400mW, D0-35 1 D3 BAT85 Diodes Inc. Schottky diode, 40V, 400mW, D0-35 1 D4 BAT85 Diodes Inc. Schottky diode, 40V, 400mW, D0-35 1 D5 BAT85 Diodes Inc. Schottky diode, 40V, 400mW, D0-35 1 J1 15-84-0064 Molex SMBus host connector 1 JP1 Any Any 3-pin header 1 JP2 Any Any 3-pin header 1 JP3 Any Any 2-pin header 1 JP4 Any Any 2-pin header 1 JP5 N/A N/A Not stuffed N/A JP6 N/A N/A Not stuffed N/A JP7 ZOR-25-B Yageo 0Ω 1/4W, 5% resistor 1 P1 Any Any 2-pin header 1 P2 Any Any 2-pin header 1 P3 Any Any 3-pin header 1 P4 Any Any 8-pin header 1 1 P5 DB25M Any Male parallel port connector 1 /INT LTL-4203 Lite-On Inc. Red LED 1 /CRIT N/A N/A Not stuffed Q1 2N3906 Motorola PNP transistor, TO-92 1 Q2 2N3906 Motorola PNP transistor, TO-92 1 Q3 2N3906 Motorola PNP transistor, TO-92 1 Q4 N/A N/A Not stuffed N/A N/A N/A R1 N/A N/A Not stuffed R2 CFR-25JB-22K Yageo 22kΩ 1/4W, 5% resistor 1 R3 CFR-25JB-4K7 Yageo 4.7kΩ 1/4W, 5% resistor 1 R4 CFR-25JB-4K7 Yageo 4.7kΩ 1/4W, 5% resistor 1 R5 CFR-25JB-100K Yageo 100kΩ, 1/4W, 5% resistor 1 R6 CFR-25JB-100R Yageo 100Ω 1/4W, 5% resistor 1 R7 CFR-25JB-22K Yageo 22kΩ 1/4W, 5% resistor 1 R8 CFR-25JB-470R Yageo 470Ω 1/4W, 5% resistor 1 R9 N/A N/A Not stuffed N/A R10 N/A N/A Not stuffed N/A EXT VDD 5007 Keystone Electronics Color coded PCB test points, white 1 VDD TEST 5007 Keystone Electronics Color coded PCB test points, white 1 GND 5006 Keystone Electronics Color coded PCB test points, black 1 SDA 5007 Keystone Electronics Color coded PCB test points, white 1 SCL 5007 Keystone Electronics Color coded PCB test points, white 1 /INT 5007 Keystone Electronics Color coded PCB test points, white 1 /CRIT N/A N/A Not stuffed U1 MIC384-0BM Micrel Semiconductor Local/Remote Thermal Supervisor 1 U2 MIC5207-3.3BZ Micrel Semiconductor 180mA Low Noise LDO Regulator 1 February 2002 5 N/A MIC384 Evaluation Board MIC384 Evaluation Board and DemoWare Software Micrel Schematic TP1 R6 100Ω P3 External VDD PC PORT VDD 3 2 1 1 EXTERNAL VDD IN TP2 (3.3V) 3 Pin Header R2 22kΩ P4 8 7 6 5 4 3 2 1 R5 100kΩ 1 GND A0 TP3 NC NC 1 /INT CLOCK DATA 8 Pin Header C2 0.1µF TP4 TP5 TP6 1 1 1 SCL 4 3 2 1 R3 R4 4.7kΩ 4.7kΩ VDD TEST C3 4.7µF/10V MIC384-0BM 1 2 3 4 SDA /INT Test Points SCL VDD SDA GND DATA CLK /INT GND 8 VDD A0 7 T1 6 T2 5 JP3 2 1 C4 2200pF/50V 2 Pin Header U1 JP2 3 2 1 J1 Molex 15-83-0064 (71565 Family) Q2 2N3906 JP4 13 25 12 24 11 23 10 22 9 21 8 20 7 19 6 18 5 17 4 16 3 15 2 14 1 P5 2 Pin Header P2 2 1 JP7 0Ω R7 22kΩ 2 1 (Dedicated Trace) D1 BAT85 D2 BAT85 U2 IN OUT 1 GND 2 JP1 3 2 1 D4 BAT85 D5 BAT85 Q1 2N3906 R8 470Ω 3 Pin Header P1 2 1 MC5207-3.3BZ LED1 /INTLOW D3 BAT85 2 Pin Header C5 2200pF Q3 2N3906 3 3 Pin Header (Dedicated Trace) 2 Pin Header C1 2.2µF/10V DB25 MIC384 Evaluation Board 6 February 2002 MIC384 Evaluation Board and DemoWare Software Micrel PC Board Layout PC Board Layout - Top Silkscreen PC Board Layout - Top PC Board Layout - Bottom Silkscreen PC Board Layout - Bottom February 2002 7 MIC384 Evaluation Board MIC384 Evaluation Board and DemoWare Software Micrel MIC384 DemoWare™ Software System Requirements The DemoWare software is designed to run on any personal computer running Microsoft Windows 95 or 98. A standard parallel printer port is required for communication with the MIC384 evaluation board. Once decompressed and installed, the DemoWare files will occupy approximately 1.9MB of hard disk space. Installing the Software The MIC384 DemoWare is available for download at http:// www.micrel.com. If you are unable to obtain the software from the Micrel website, please contact a Micrel sales representative for assistance. To install the MIC384 DemoWare: 1. Download the file “MIC1_2_384-demoware.exe” into a temporary directory. This file is a selfextracting ZIP archive containing the files MIC1_2_384-demoware.exe and Mfc42.dll. MIC1_2_384-demoware.exe is the program itself. Mfc42.dll is a library containing code used by MIC1_2_384-demoware.exe. 2. Start the extraction process by selecting Run on the Start menu and choosing the file MIC1_2_384-demoware.exe. MIC1_2_384demoware.exe and Mfc42.dll will be extracted and saved into a subdirectory named MICx84DemoWare in the root directory of the hard disk. If you wish to use a different directory, enter its name in the “Unzip to folder” text box or select the Browse option. This directory will be created if necessary. 3. Select “Unzip” and the files will be extracted. 4. A message stating “2 file(s) unzipped successfully” will be displayed when the process is finished. Click “OK” to proceed. 5. Click “Close” to complete the process and exit the installation utility. Running the Software Launch the software by selecting Run on the Start menu and selecting the file MIC1_2_384-demoware.exe. If the installation defaults were used, this file will be in a subdirectory called “MICx84DemoWare” in the root directory on the hard disk. Once the program starts, the main window will be displayed and power to the evaluation board will be off. Any status or error messages displayed are not valid until the software is properly configured and the board is powered on. Figure 4. MIC384 DemoWare Main Window Figure 5. Selecting the Printer Port Figure 6. Selecting the Device Type and Base Address Figure 7. Selecting the Chart Recorder Scale Figure 8. Turning on Power to the Evaluation Board MIC384 Evaluation Board 8 February 2002 MIC384 Evaluation Board and DemoWare Software Micrel Using the Software The software must be configured prior to use: 1. Select the printer port to which the board will be connected using the Port item on the Configure Menu as shown in Figure 5. 2. Select the MIC384 device by selecting MIC384 on the Device menu. Select the device base address using the Device item on the Configure menu as shown in Figure 6. The base address selected must match the jumper settings on the evaluation board as shown in Table 3. 3. Adjust the chart recorder scale using the Scale item on the Configure menu. Only temperature values between Upper Scale Limit and Lower Scale Limit will be displayed in the chart recorder window. Enter the desired values in the text boxes. Clicking the Get Current button or any of the temperature acquisition buttons will automatically turn on power to the board. The power may also be turned on using the Device Power item on the Configure menu, as shown in Figure 8. When power is on, a checkmark will appear next to Device Power on the Configure menu. (In any case, the power should be turned off before removing the board from the PC by selecting the Device Power item on the Configure menu!) Once power is turned on, the MIC384 registers will be read and the current values will be displayed. The main window should now appear similar to Figure 4. The main window has several components: • Temperature acquisition buttons and chart recorder (Figure 11): A single temperature sample from the selected zone may be taken by clicking the MANUAL button. Automatic temperature samples can be taken at specific intervals by clicking the .5s, 1s, 2s, 5s, 10s, or 20s button. Any temperature samples taken will be displayed in the chart recorder area. Data for Zone 0, the internal zone, will be plotted in green, data for Zone 1, the first external zone, will be plotted in blue, and data for Zone 2, the second external zone, will be plotted in red. • Status line (Figure 10): Status messages are displayed on the status line, including the state of the serial bus link, the logic state of the /INT pin, and the states of the Shift Lock and Num Lock keys. • Thermometer display (Figure 9): The three thermometers will be active and display the reported temperature for each zone in degrees Centigrade and binary. Alarm indications are also displayed in the thermometer display. February 2002 • Register display (Figure 12): The values in the configuration, setpoint, and hysteresis registers are displayed in this box. The bits of the configuration register are displayed according to function. Those bits that are not read-only can be altered. New values can be entered in the appropriate text boxes. Merely changing the values displayed on the screen will not cause data to be written to the MIC384. The Set New button must always be used to write any changes to the part. Figure 9. Thermometer Displays Figure 10. Status Line 9 MIC384 Evaluation Board MIC384 Evaluation Board and DemoWare Software Micrel Figure 11. Temperature Acquisition Window Figure 12. Register Display MIC384 Evaluation Board 10 February 2002 MIC384 Evaluation Board and DemoWare Software Micrel Acquiring Temperature Data Micrel Data Log File created 10/29/2001 15:17:09 Single Conversions Clicking the MANUAL button will cause a single temperature reading to be acquired from the selected zone. This single reading will be displayed on the appropriate thermometer display and plotted on the chart recorder in the appropriate color. It will also be recorded to the log file if data logging is turned on. See “Logging Data to a File” below. Periodic Sampling Clicking any one of .5s or 1s or 2s or 5s or 10s or 20s buttons will initiate repetitive temperature sampling at the indicated interval. The data acquired will be displayed on the appropriate thermometer display and plotted on the chart recorder in the appropriate color. The samples will also be recorded to the log file if data logging is turned on. Viewing and Modifying Registers Get Current The current values of the configuration, setpoint, and hysteresis registers can be displayed at any time by clicking the Get Current button. Setpoint and Hysteresis Registers The temperature setpoint and hysteresis registers can be modified by typing the desired values into the Temperature Setpoint and Hysteresis text boxes for each zone and then clicking the Set New button. The Set New button must always be used to write new values to the MIC384 after any setting is modified on the screen. Configuration Register The various functions of the configuration register can be accessed using the check boxes and radio buttons in the MIC384 Configuration Register section of the main window. The Set New button must always be used to write new values to the MIC384 after any setting is modified on the screen. TIME ELAPSED SAMPLE INTERNAL REMOTE1 REMOTE2 10/29/01 10/29/01 10/29/01 10/29/01 10/29/01 10/29/01 10/29/01 10/29/01 10/29/01 10/29/01 10/29/01 10/29/01 10/29/01 10/29/01 10/29/01 10/29/01 10/29/01 10/29/01 10/29/01 10/29/01 10/29/01 10/29/01 15:17:10 0 0 22 15:17:10 630 1 21 15:17:11 1145 2 22 15:17:11 1680 3 22 15:17:12 2200 4 22 15:17:12 2720 5 22 15:17:13 3240 6 22 15:17:13 3760 7 22 15:17:14 4275 8 22 15:17:15 4790 9 22 15:17:15 5305 10 22 15:17:16 5825 11 22 15:17:16 6340 12 23 15:17:17 6860 13 23 15:17:17 7375 14 24 15:17:18 7891 15 24 15:17:18 8405 16 24 15:17:19 8920 17 24 15:17:19 9435 18 24 15:17:20 9950 19 25 15:17:20 10470 20 25 15:17:21 10985 21 25 Figure 13. Example Data Log 22 22 22 22 22 22 22 22 23 23 23 23 23 23 25 25 24 24 25 26 25 25 23 23 23 23 23 23 23 23 23 23 23 23 23 23 24 24 24 25 25 25 25 25 An example data file is shown in Figure 13. This file may be opened in a program such as Microsoft Excel for graphing, filtering, sorting, manipulation, etc. The first line of the file identifies the file and the time and date when it was created. The second line lists the field names for the succeeding lines. The fields are as follows (in order): Restoring Register Defaults Clicking the Restore Defaults button will return all registers to their default values, similar to the MIC384’s power-on state. Logging Data to a File All temperature data acquired during a given period may be logged to a file by activating the recording function. Recording is started by selecting the Record to File... item on the File menu. 1. Configure the device as desired via the register display window. 2. Click Set New to update the MIC384’s configuration. 3. Activate data logging by selecting the Record to File... item on the File menu. Enter the desired file and path name and click Save. Note that the log file is a comma-delimited or *.csv file. 4. Acquire temperature data by clicking the .5s, 1s, 2s, 5s, 10s, 20s, or MANUAL button. 5. When finished recording data, stop data logging by once again selecting the Record to File... item on the File menu. February 2002 DATE • DATE: The date, according to the PC’s system clock, that the sample was taken. • TIME: The time, according to the PC’s system clock, that the sample was taken. • ELAPSED: The total elapsed time, in milliseconds, since the first sample was taken. • SAMPLE: The sample number; samples are numbered sequentially starting with number one. • INTERNAL: The measured temperature for the internal zone. • REMOTE1: The measured temperature for the first remote zone, Zone 1. • REMOTE2: The measured temperature for the second remote zone, Zone 2. 11 MIC384 Evaluation Board MIC384 Evaluation Board and DemoWare Software Micrel Appendix A: SMBus Resources* Molex Incorporated 2222 Wellington Court Lisle, IL 60532-1682 Tel.: 800-78MOLEX, 630-969-4550 (Outside USA) Fax: 630-968-8356 Telex: 254069 E-mail: [email protected] http://www.molex.com PC host adapters and software, bus analyzers, cables, and other items can be purchased from: Micro Computer Control Corporation PO Box 275/ 17 Model Ave. Hopewell, New Jersey 08525 USA Tel.: 609-466-1751 Email: [email protected] http://www.mcc-us.com Saelig Company Tel.: 716-425-3753 Fax: 716-425-3835 Email: [email protected] http://www.memo.com/saelig The current SMBus specification and other information regarding SMBus may be obtained from the SMBus website http://www.smbus.org. *Micrel does not necessarily endorse or recommend any of the products, services, or information sources listed above. Micrel is not affiliated in any way with any listed company, person, or other entity. The above information is presented without warranty of any kind. The 4-conductor serial bus connector is available from Molex as part number 15-83-0064. Mating plugs for constructing cable assemblies are also available. A list of distributors is available on the Molex website. MICREL INC. TEL 1849 FORTUNE DRIVE SAN JOSE, CA 95131 + 1 (408) 944-0800 FAX + 1 (408) 944-0970 WEB USA http://www.micrel.com This information is believed to be accurate and reliable, however no responsibility is assumed by Micrel for its use nor for any infringement of patents or other rights of third parties resulting from its use. No license is granted by implication or otherwise under any patent or patent right of Micrel Inc. © 2002 Micrel Incorporated MIC384 Evaluation Board 12 February 2002