LM63CIMAX National Semiconductor, LM63CIMAX Datasheet
LM63CIMAX
Specifications of LM63CIMAX
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LM63CIMAX Summary of contents
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... Connection Diagram Intel ® and Pentium ® are registered trademarks of Intel Corporation. © 2003 National Semiconductor Corporation n 10 bit plus sign remote diode temperature data format, with 0.125˚C resolution n SMBus 2.0 compatible interface, supports TIMEOUT n LM86-compatible pinout n LM86-compatible register set ...
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Pin Descriptions Pin Name Input/Output 1 V Power Supply Input Analog Input 3 D− Analog Input Open-Drain 4 PWM Digital Output 5 GND Ground 6 ALERT/TACH Digital I/O Digital Input/ 7 SMBDAT Open-Drain Output 8 SMBCLK Digital ...
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... SOIC ± LM63D ( 3˚C) 8-pin SOIC ± LM63D ( 3˚C) 8-pin SOIC LM63 Evaluation Board With Software and User’s Guide Top Mark Order Number LM63CIMA LM63CIMAX LM63CIMA LM63CIMA LM63DIMA LM63DIMAX LM63DIMA LM63DIMA N/A LM63EVAL 3 20057003 Transport Media 2500 Units in Tape and Reel ...
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Absolute Maximum Ratings 2) Supply Voltage Voltage on SMBDAT, SMBCLK, ALERT/Tach, PWM Pins Voltage on Other Pins Input Current, D− Pin Input Current at All Other Pins (Note 3) Package Input Current (Note 3) Package Power Dissipation SMBDAT, ...
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AC Electrical Characteristics The following specifications apply for V wise specified in the conditions. Boldface limits apply for T Symbol Parameter TACHOMETER ACCURACY Fan Control Accuracy Fan Full-Scale Count Fan Counter Clock Frequency Fan Count Update Frequency FAN PWM OUTPUT ...
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SMBus Digital Switching Characteristics Unless otherwise noted, these specifications apply for V 80 pF. Boldface limits apply for T switching characteristics of the LM63 fully meet or exceed the published specifications of the SMBus version 2.0. The following parameters are ...
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Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is functional, but do not guarantee performance limits. For guaranteed specifications and test conditions, see the Electrical ...
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Functional Description Standby mode the user may choose to allow the PWM output signal to continue, or not, by programming the PWM Disable in Standby bit in the Configuration Register. The Local Temperature reading and setpoint data registers are ...
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Functional Description cleared only upon a read command from the master (see Figure 4 ) and will be re-asserted at the end of the next conversion if the triggering condition(s) persist(s). In order for the ALERT to be used ...
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Functional Description FIGURE 5. ALERT Output as an SMBus ALERT Temperature Response Diagram 1.3 SMBus INTERFACE Since the LM63 operates as a slave on the SMBus the SMBCLK line is an input and the SMBDAT line is bi- directional. ...
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Functional Description No-Acknowledge from the Master. Note that the No- Acknowledge is typically used as a signal for the slave indicating that the Master has read its last byte. 1.9 DIGITAL FILTER The LM63 incorporates a user-configured digital filter ...
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Functional Description 1.10 FAULT QUEUE The LM63 incorporates a Fault Queue to suppress errone- ous ALERT triggering . The Fault Queue prevents false triggering by requiring three consecutive out-of-limit HIGH, LOW, or T_CRIT temperature readings. See Figure 9. The ...
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LM63 Registers The following pages include: Section 2.1, a Register Map in Hexadecimal Order, which shows a summary of all registers and their bit assignments, Section 2.2, a Register Map in Functional Order, and Section 2.3, a detailed explanation ...
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LM63 Registers (Continued) Register Register Name 0x[HEX] 4F Lookup Table Hystersis 50–5F Lookup Table 60–BE [Reserved] BF Rmt Diode Temp Filter C0–FD [Reserved] FE Manufacturer’ Stepping/Die Rev. ID 2.2 LM63 REGISTER MAP IN FUNCTIONAL ORDER The following ...
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LM63 Registers (Continued) Register Register Name [HEX] ALERT STATUS AND MASK REGISTERS 02 ALERT Status 16 ALERT Mask ID AND TEST REGISTERS FF Stepping/Die Rev. ID [RESERVED] REGISTERS — NOT USED 06 Not Used 0C Not Used 15 Not ...
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LM63 Registers (Continued) LM63 Register Descriptions In Functional Order Fan Control Registers Address Read/ POR Bits Hex Write Value 4A FAN PWM AND TACHOMETER CONFIGURATION REGISTER HEX 7 R ...
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LM63 Registers (Continued) Fan Control Registers Address Read/ POR Bits Hex Write Value 4B FAN PWM AND TACHOMETER CONFIGURATION REGISTER HEX 7 R/W 4:3 11 2:0 111 4D FAN PWM FREQUENCY REGISTER HEX 7:5 000 ...
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LM63 Registers (Continued) Fan Control Registers Address Read/ POR Bits Hex Write Value LOOKUP TABLE (7 Bits for Temperature and 6 Bits for PWM for each Temperature/PWM Pair) HEX HEX 6:0 0x7F 7:6 ...
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LM63 Registers (Continued) Configuration Register ADDRESS Read/ POR Bits Hex Write Value 03 (09) CONFIGURATION REGISTER HEX 4 (09) R Name When this bit is ...
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LM63 Registers (Continued) Tachometer Count And Limit Registers ADDRESS Read/ POR Bits Hex Write Value 47 TACHOMETER COUNT (MSB) and 46 HEX MSB and ensure MSB and LSB are from the same reading) Read 47 7:0 N/A Only Read ...
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LM63 Registers (Continued) Remote Diode Temperature, Offset And Setpoint Registers ADDRESS Read/ POR Bits Hex Write Value Read 01 7:0 N/A Only Reading (MSB) 7:5 N/A Read 10 Only Reading (MSB) 4 R/W 7:5 00 OFFSET (MSB) ...
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LM63 Registers (Continued) ALERT Status And Mask Registers ADDRESS Read/ POR Bits Hex Write Value 02 ALERT STATUS REGISTER (8-bits) (All Alarms are latched until read, then cleared if alarm condition was removed HEX at the time of the ...
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... Only FE MANUFACTURER’S ID REGISTER (8-bits) HEX Read FE 7:0 0x01 Manufacturer’s ID 0x01 = National Semiconductor Only (Continued) Name This bit is unused and always read as 1. Local High When this bit Local High Alarm event will generate an ALERT. Alarm Mask When this bit Local High Alarm will not generate an ALERT This bit is unused and always read as 1 ...
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Application Notes 3.1 FAN CONTROL DUTY CYCLE VS. REGISTER SETTINGS AND FREQUENCY PWM PWM Step Freq Value Resolution [5:0] % [4:0] for 100 16 12 ...
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Application Notes (Continued) 3.2 USE OF THE LOOKUP TABLE FOR NON-LINEAR PWM VALUES VS TEMPERATURE The Lookup Table, Registers 50 through 5F, can be used to create a non-linear PWM vs Temperature curve that could be used to reduce ...
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... Compensating for Diode Non-Ideality In order to compensate for the errors introduced by non- ideality, the temperature sensor is calibrated for a particular processor. National Semiconductor temperature sensors are always calibrated to the typical non-ideality of a particular processor type. The LM63 is calibrated for the non-ideality of the 0.13 micron Intel Pentium 4 and Mobile Pentium 4 Processor-M proces- sors ...
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Application Notes (Continued) 3.5 PCB LAYOUT FOR MINIMIZING NOISE FIGURE 10. Ideal Diode Trace Layout In a noisy environment, such as a processor mother board, layout considerations are very critical. Noise induced on traces running between the remote temperature ...
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... NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant ...