ADM1024ARUZ ON Semiconductor, ADM1024ARUZ Datasheet
ADM1024ARUZ
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ADM1024ARUZ Summary of contents
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ADM1024 System Hardware Monitor with Remote Diode Thermal Sensing The ADM1024 is a complete system hardware monitor for microprocessor−based systems, providing measurement and limit comparison of various system parameters. Eight measurement inputs are provided; three are dedicated to monitoring 5.0 ...
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V CC VID0/IRQ0 VID1/IRQ1 VID2/IRQ2 VID3/IRQ3 100k W PULLUPS VID4/IRQ4 FAN1/AIN1 FAN2/AIN2 +V CCP1 +2.5V /D2+ IN +5.0V IN +12V IN V /D2– CCP2 D1+ D1– POWER TO CHIP V CC BAND GAP TEMPERATURE SENSOR ABSOLUTE MAXIMUM RATINGS Parameter Positive ...
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PIN ASSIGNMENT Pin No. Mnemonic 1 NTEST_OUT/ADD Digital I/O. Dual function pin. This is a three−state input that controls the two LSBs of the Serial Bus Address. This pin functions as an output when doing a NAND test. 2 THERM ...
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ELECTRICAL CHARACTERISTICS Parameter POWER SUPPLY Supply Voltage Supply Current TEMPERATURE−TO−DIGITAL CONVERTER Internal Sensor Accuracy Resolution External Diode Sensor Accuracy Resolution Remote Sensor Source Current ANALOG−TO−DIGITAL CONVERTER (Including MUX and ATTENUATORS) Total Unadjusted Error (TUE) (12 V ...
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ELECTRICAL CHARACTERISTICS Parameter OPEN−DRAIN SERIAL DATABUS OUTPUT (SDA) Output Low Voltage High Level Output Leakage Current SERIAL BUS DIGITAL INPUTS (SCL, SDA) Input High Voltage Input Low Voltage Hysteresis Glitch Immunity DIGITAL ...
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TYPICAL PERFORMANCE CHARACTERISTICS DXP TO GND 0 –10 DXP –20 –30 –40 –50 –60 1 3.3 10 LEAK RESISTANCE (MΩ) Figure 3. Temperature Error vs. PC Board Track Resistance 25 20 100mV ...
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TYPICAL PERFORMANCE CHARACTERISTICS 26.5 26 3.3 V 25.5 DD 25.0 24.5 24.0 23.5 23.0 22.5 –40 – TEMPERATURE (5C) Figure 9. Standby Current vs. Temperature http://onsemi.com 7 80 100 120 ...
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General Description The ADM1024 is a complete system hardware monitor for microprocessor−based systems. The device communicates with the system via a serial SMBus. The serial bus controller has a hardwired address line for device selection (Pin 1), a serial data ...
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Value and Limit Registers: The results of analog ♦ voltage inputs, temperature, and fan speed measurements are stored in these registers, along with their limit values. Analog Output Register: The code controlling the ♦ analog output DAC is stored in ...
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A read operation is then performed consisting of the serial bus address, R/W bit set to 1, followed by the data byte read from the data register. This is shown in Figure 12 the Address Pointer Register is ...
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Bits the Channel Mode Register enable or disable Pins when they are configured as interrupt inputs by setting Bit 7 of the Channel Mode Register. This function is controlled for Pins 20 and ...
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Table 3 shows the input ranges of the analog inputs and output codes of the ADC. When the ADC is running, it samples and converts an input every 748 ms, ...
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Table 4. Theoretically, the temperature sensor and ADC can measure temperatures from −128°C to +127°C with a resolution of 1°C, although ...
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Use wide tracks to minimize inductance and reduce noise pickup mil track minimum width and spacing is recommended. GND D+ D– GND Figure 18. Arrangement of Signal Tracks 4. Try to minimize the number of copper/solder joints, ...
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Analog Output The ADM1024 has a single analog output from an unsigned 8−bit DAC that produces 2.5 V. The analog output register defaults to FF during power−on reset, which produces maximum fan speed. The analog output may ...
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In all these circuits, the output transistor must have an I greater than the maximum fan current, CMAX and be capable of dissipating power due to the voltage dropped across it when the fan is not operating at full ...
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If the fan has a strong pullup (less than 1 kW totem−pole output, then a series resistor can be added to limit the Zener current, as shown in Figure 27. Alternatively, a resistive attenuator may ...
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Table 5. Fan Speeds and Divisors Divisor RPM Nominal RPM ÷ 1 8800 ÷ 2 4400 ÷ 4 2200 ÷ 8 1100 Limit Values Fans in general will not over−speed if run from the correct voltage, so the failure condition ...
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The chassis intrusion input can also be used for other types of alarm input. Figure 31 shows a temperature alarm circuit using an AD22105 temperature switch sensor. This produces a low going output when the preset temperature is exceeded, so ...
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VID0/IRQ0 VID1/IRQ1 VID2/IRQ2 VID3/IRQ3 VID4/IRQ4 4 5 CHANNEL MODE REGISTER CONFIGURATION REGISTER 2 7 HIGH LIMIT 1 = OUT OF FROM LIMIT VALUE VALUE AND LIMIT REGISTERS LOW LIMIT MASKING DATA FROM BUS Temperature Interrupt Modes The ...
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Once the interrupt has been cleared, it will not be reasserted even if the temperature remains above the high limit(s). However, INT will be reasserted if: The temperature falls below the low limit for the sensor; or: The high limit(s) ...
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RESET Input/Output RESET (Pin 12 I/O pin that can function as an open−drain output, providing a low going 20 ms output pulse when Bit 4 of the Configuration Register is set to 1, provided the reset function has ...
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Bits 1 and 2 of Configuration Register 2 lock the values stored in the Local and Remote Fan Control Registers at addresses 13h and 14h. The values in these registers cannot be changed until a power−on reset is performed. Bit ...
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ADM Registers Table 6. Address Pointer Register Bit Name R/W 7–0 Address Pointer Table 7. List of Registers Hex Description Addr 13h Internal Temperature Hardware Trip Point 14h External Temperature Hardware Trip Point 15h Test Register 16h Channel Mode Register ...
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Hex Description Addr 35h V High Limit CCP2 36h V Low Limit CCP2 37h Ext. Temp1 High Limit 38h Ext. Temp1 Low Limit 39h Internal Temp. High Limit 3Ah Internal Temp. Low Limit 3Bh A /FAN1 High Limit IN1 3Ch ...
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Table 9. Register 40h, Configuration Register 1 (Power−On Default, 08h) Bit Name R/W 0 START R/W 1 INT_Enable R/W 2 THERM R/W Enable 3 INT_Clear R/W 4 RESET R/W 5 Reserved R/W 6 THERM CLR R/W 7 Initialization R/W Table ...
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Table 12. Register 43h, INT Interrupt Mask Register 1 (Power−On Default, 00h) Bit Name R/W 0 2.5 V/Ext. Temp2 R R/W CCP1 5.0 V R/W 4 Int. Temp R/W 5 Ext. Temp1 R/W ...
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... An error that causes continuous interrupts to be generated may be masked in its respective mask register, until the error can be alleviated. ORDERING INFORMATION Device Order Number ADM1024ARUZ ADM1024ARUZ−REEL †For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D. *The “Z’’ suffix indicates Pb−Free part. ...
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... Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner. PUBLICATION ORDERING INFORMATION LITERATURE FULFILLMENT: Literature Distribution Center for ON Semiconductor P.O. Box 5163, Denver, Colorado 80217 USA Phone: 303−675−2175 or 800−344−3860 Toll Free USA/Canada Fax: 303− ...