MIC184 Micrel Semiconductor, MIC184 Datasheet
MIC184
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MIC184 Summary of contents
Page 1
... Three program- mable address pins permit users to multidrop devices along the 2-wire bus, allowing simple distributed temperature sensing networks. Superior performance, low power and small size makes the MIC184 an excellent choice for the most demanding thermal management applications. Typical Application 3.0V to 3.6V ...
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... Pin Number Pin Name 1 DATA 2 CLK 3 INT 4 GND 5 A2/ VDD MIC184 DATA 1 8 VDD CLK INT GND 4 5 A2/T1 Pin Function Data (Digital I/O): Open-drain. Serial data input/output. Clock (Digital Input): The host provides the serial bit clock on this input. ...
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... C to +125 Min Typ Max or GND, 340 TBD 2.5 or GND, 1 TBD 15 100 2.0 2.7 250 + +85 C 100 160 200 320 224 400 7.5 14 0.6 2.0 10 0.01 25 Micrel Units MIC184 ...
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... Testing is performed using a single unit of one of the transistors listed in Table 5. D Note 8. Current into the INT pin will result in self-heating of the MIC184. INT pin current should be minimized for best accuracy. Note 9. This is the decimal representation of a binary data value. ...
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... CLOCK 0 TEMPERATURE ( C) Shutdown Mode IDD vs. Suply Voltage 400 350 300 250 200 150 100 SUPPLY VOLTAGE (V) Measurment Error vs. Capcitance -10 - CAPACITANCE (nF) MIC184 ...
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... These inputs set the three least significant bits of the MIC184’s 7-bit slave address. Each MIC184 will only respond to its own unique slave address, allowing the use eight MIC184s on a single bus. A match between the MIC184’s address and MIC184 ...
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... A new “start” bit must then be sent to the MIC184, followed by a repeat of the slave address with the R/W bit (LSB) set to the high (read) state. The data m ...
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... MIC184 MIC184 8 Micrel November 2000 ...
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... MIC184 November 2000 9 Micrel MIC184 ...
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... A2/T1 that will attempt to sink 25 A from the pin to ground for the MIC184. This allows the MIC184 to pull A2/ low state when a diode junction is connected from that pin to ground, and latch a zero as the A2 address value not ...
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... This action cannot be masked. However, a tempera- ture event will only generate an interrupt signal on INT if interrupts from the MIC184 are enabled ( and MODE = 1 in the configuration register). Reading any register following an interrupt will cause INT to be deasserted, and will clear STS ...
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... These are reserved bits according to the LM75 specification and, for the LM75, must always be written as zeroes. The MSB of the MIC184’s status register is a status flag that does not exist in the LM75. This bit will be set to one whenever an overtemperature event occurs. This bit would never be set by an LM75 ...
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... Micrel ° ° ° MIC184 ...
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... T_SET Power-Up Default Value: 0 1010 0000b (+80 C) T_SET Command Byte Address: 0000 0011b = 03 MIC184 ...
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... When the part has finished its first A/D conver- sion, INT will be asserted. 5. Read out the contents of the CONFIG register the part is an MIC184, the MSB will be set to one (CONFIG = 1000 0010b = 82h the part is a conventional LM75-type part, the MSB will be zero (CONFIG = 0000 ...
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... A/D conversion. 5. Read the contents of the CONFIG register the part is an MIC184, the MSB will be set to one (CONFIG = 82h the part is a conventional LM75-type part, the MSB will be zero (CONFIG = 02h). ...
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... Filter Capacitor Selection When using a remote diode for temperature sensing sometimes desirable to use a filter capacitor between the A2/ T1 and GND pins of the MIC184. The use of this capacitor is recommended in environments with a significant high fre- quency noise (such as digital switching noise long wires are used to connect to the remote diode ...
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... SERIAL BUS HOST Figure 9. V MIC184 DATA VDD 8 CLK A0 7 INT A1 6 GUARD/RETURN REMOTE DIODE (A2/T1) GND A2/T1 5 GUARD/RETURN Figure 8. Guard Traces/Kelvin Ground Returns 3.0V to 3.6V 100 0.1 F MIC184 8 5 VDD A2/ DATA CLK INT GND Decoupling for Very Noisy Supplies DD 18 4.7 F 2N3906 2200pF ...
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... SEATING PLANE 8-Lead SOP (M) 0.199 (5.05) 0.187 (4.74) 0.120 (3.05) 0.116 (2.95) 0.043 (1.09) 0.038 (0.97) 0.012 (0.30) R 0.008 (0.20) 5 MAX 0.004 (0.10) 0 MIN 8-Lead MSOP (MM 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) Micrel MIC184 ...
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... MIC184 MIC184 20 Micrel November 2000 ...
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... 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. November 2000 + 1 (408) 944-0970 http://www.micrel.com FAX WEB © 2000 Micrel Incorporated 21 Micrel MIC184 ...