MIC384 Micrel Semiconductor, MIC384 Datasheet
MIC384
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MIC384 Summary of contents
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... A programmable address pin permits two devices to share the bus. (Alternate base addresses available – contact Micrel.) mance, low power and small size makes the MIC384 an excellent choice for multiple zone thermal management applications. *SMBus and Pentium III are trademarks of Intel Corporation. ...
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... Pin Description Pin Number Pin Name 1 DATA 2 CLK 3 /INT 4 GND VDD MIC384 DATA 1 8 VDD CLK /INT GND Pin Function Digital I/O: Open-drain. Serial data input/output. Digital Input: The host provides the serial bit clock on this input. ...
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... V 5.5V DD 2. (Note 2) +2.7V to +5.5V DD .............................. ) ............ - +125 Min Typ Max 350 750 200 2.0 2.7 250 + + 100 160 224 400 7.5 14 0.6 2.0 10 0.01 Micrel Units MIC384 ...
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... Testing is performed using a single unit of one of the transistors listed in Table 6. D Note 6. Current into this pin will result in self-heating of the MIC384. Sink current should be minimized for best accuracy. Note 7. Guaranteed by design over the operating temperature range. Not 100% production tested. ...
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... MIC384 Note 9. Accuracy specification does not include quantization noise, which may be as great as Timing Diagram SDA Data In SDA Data Out September 2000 t 1 SCL Serial Interface Timing 5 1 ⁄ LSB ( 0.5 C Micrel MIC384 ...
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... Each MIC384 will only respond to its own unique slave address, allowing up to eight MIC384’s to share a single bus. A match between the MIC384’s address and the address specified in the serial bit stream must be made to initiate communication. A0 should be tied directly to VDD or ground. See " ...
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... A new start bit must then be sent to the MIC384, followed by a repeat of the slave address with the R/W bit (LSB) set to the high (read) state. The data to be read from the part may then be clocked out ...
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... MIC384 MIC384 8 Micrel September 2000 ...
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... MIC384 September 2000 9 Micrel MIC384 ...
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... CONV0 not be automatically de-asserted when the measured tem- perature falls below T_HYSTx. They can only be de-asserted by reading any of the MIC384’s internal registers or by putting the device into shutdown mode. If the most recent tempera- ture event was an overtemperature condition, Sx will not be set again, and /INT cannot be reasserted, until the device has detected that TEMPx < ...
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... – 4 ° – 5 ° Table 3. Digital Temperature Format MIC384 Micrel ...
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... Interrupt Generation Assuming the MIC384 is in interrupt mode and interrupts are enabled, there are seven different conditions that will cause the MIC384 to set one of the status bits, S0, S1, or S2, in MIC384 CONFIG and assert its /INT output. These conditions are listed in Table 5. When a temperature event occurs, the corresponding status bit will be set in CONFIG ...
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... ° Table 5. MIC384 Temperature Events ...
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... CONFIG Power-Up Value: 0000 0000 • not in shutdown mode • comparator mode • Fault_Queue depth = 1 • interrupts enabled. • no temperature events pending CONFIG Command Byte Value: 0000 0001 * Following the first Fault_Queue conversions, one or more of the status bits may be set. MIC384 ...
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... See "Temperature Data Format" for more details See "Temperature Data Format" for more details. b Micrel MIC384 ...
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... Remote Zone 1 Temperature Setpoint Register T_SET1 Power-Up Value: 0110 0001 T_SET1 Command Byte Value: 0001 0011 MIC384 ...
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... See "Temperature Data Format" for more details See "Temperature Data Format" for more details. b Micrel MIC384 ...
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... Filter capacitor selection It is sometimes desirable to use a filter capacitor between the T1 and/or T2 pins and the GND pin of the MIC384. The use of these capacitors is recommended in environments with a lot of high frequency noise (such as digital switching noise long wires are used to attach to the remote diodes ...
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... Layout Considerations The following guidelines should be kept in mind when design- ing and laying out circuits using the MIC384: 1. Place the MIC384 as close to the remote diodes as possible, while taking care to avoid severe noise sources such as high frequency power transformers, CRTs, memory and data busses, and the like ...
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... MIC384 3.3V 10k pull-ups FROM SERIAL BUS HOST Figure 7. V MIC384 100 0.1 F 4.7 F MIC384 DATA VDD CLK T1 / INT T2 GND A0 Decoupling for Very Noisy Supplies DD 20 Micrel Remote Diode 2200pF Remote Diode 2200pF September 2000 ...
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... R 0.008 (0.20) 5 MAX 0.004 (0.10) 0 MIN 8-Lead MSOP (MM (408) 944-0970 FAX © 2000 Micrel Incorporated 21 45 0.010 (0.25) 0.007 (0.18) 0.050 (1.27) 0.016 (0.40) 0.244 (6.20) 0.228 (5.79) DIMENSIONS: INCH (MM) 0.007 (0.18) 0.005 (0.13) 0.012 (0.03) R 0.039 (0.99) 0.035 (0.89) 0.021 (0.53) http://www.micrel.com WEB Micrel MIC384 ...