MIC184YM Micrel Inc, MIC184YM Datasheet

IC SUPERVISOR LOCAL/REMOTE 8SOIC

MIC184YM

Manufacturer Part Number
MIC184YM
Description
IC SUPERVISOR LOCAL/REMOTE 8SOIC
Manufacturer
Micrel Inc
Datasheet

Specifications of MIC184YM

Output Type
I²C™/SMBus™
Lead Free Status
Lead free
Function
Temp Monitoring System (Sensor)
Topology
ADC (Sigma Delta), Register Bank
Sensor Type
External & Internal
Sensing Temperature
-55°C ~ 125°C, External Sensor
Output Alarm
Yes
Output Fan
No
Voltage - Supply
2.7 V ~ 5.5 V
Operating Temperature
-55°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
8-SOIC (3.9mm Width)
Temperature Sensor Function
Temp Sensor
Package Type
SOIC
Operating Temperature (min)
-55
Operating Temperature (max)
125C
Operating Temperature Classification
Military
Operating Supply Voltage (min)
2.7V
Operating Supply Voltage (typ)
3.3/5V
Operating Supply Voltage (max)
5.5V
Lead Free Status / RoHS Status
Compliant
Other names
576-1676-5
MIC184YM

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General Description
The MIC184 is a versatile digital thermal supervisor capable
of measuring temperature using either its own internal sensor
or an inexpensive external sensor. A 2-wire serial interface is
provided to allow communication with either I
masters. This device is a pin-for-pin and software compatible
upgrade for the industry standard LM75.
Additional features include remote temperature measurement
capability, and interrupt status and mask bits in the chip’s
configuration register for software polling. The open-drain
interrupt output pin can be used as either an overtemperature
alarm or thermostatic control signal. Three programmable ad-
dress pins permit users to multidrop up to 8 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 demand-
ing thermal management applications.
Typical Application
May 2006
MIC184
Micrel, Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
SERIAL BUS
Interrupt
FROM
HOST
Clock
Data
3.0V to 3.6V
V
DD
10k
3 ×
2-Channel SMBus Temperature Measurement System
8
1
2
3
2
VDD
DATA
CLK
INT
C or SMBus
MIC184
A2/T1
GND
A1
A0
5
6
7
4
1
Features
• Measures local and remote temperatures
• Pin and software backward compatible to LM75
• 9-bit sigma-delta ADC
• 2-wire I
• Programmable thermostatic settings for either internal or
• Open-drain comparator/interrupt output pin
• Interrupt mask and status bits
• Low-power shutdown mode
• Fail-safe response to diode faults
• 2.7V to 5.5V power supply range
• Up to 8 devices may share the same bus
• 8-Lead SOP and MSOP Packages
Applications
• Desktop, Server and Notebook Computers
• Printers and Copiers
• Test and measurement equipment
• Consumer electronics
Ordering Information
Part Number
MIC184BM
MIC184BMM
MIC184YM
MIC184YMM
external zone
0.1µF
ceramic
Local/Remote Thermal Supervisor
2
C/SMBus compatible interface
2200pF
Temperature Range
-55°C to +125°C
-55°C to +125°C
-55°C to +125°C
-55°C to +125°C
MIC184
OPTIONAL
REMOTE
TEMPERATURE
SENSOR
8-lead MSOP
8-lead MSOP
8-lead SOIC
8-lead SOIC
Package
Pb-FREE
MIC184
X
X
Micrel

Related parts for MIC184YM

MIC184YM Summary of contents

Page 1

... SOP and MSOP Packages Applications • Desktop, Server and Notebook Computers • Printers and Copiers • Test and measurement equipment • Consumer electronics Ordering Information Part Number Temperature Range MIC184BM MIC184BMM MIC184YM MIC184YMM MIC184 8 5 VDD A2/ DATA A1 0.1µF 2200pF ...

Page 2

MIC184 Pin Configuration Pin Description Pin Number Pin Name 1 DATA 2 CLK 3 INT 4 GND 5 A2/ VDD MIC184 DATA 1 8 VDD CLK INT GND 4 ...

Page 3

MIC184 Absolute Maximum Ratings Power Supply Voltage, V .......................................... 6.0V DD Voltage on Any Pin ................................ –0. Current Into Any Pin ................................................... ±6mA Power Dissipation +125°C ................................ 30mW A Junction Temperature .............................................. +150°C Storage Temperature ................................ ...

Page 4

MIC184 Symbol Parameter Serial Data I/O Pin (DATA) V Low Output Voltage OL V Low Input Voltage IL V High Input Voltage IH C Input Capacitance IN I Input current LEAK Serial Clock Input (CLK) V Low Input Voltage IL ...

Page 5

MIC184 Typical Characteristics emperature Meas urement E rror 3. LOCAL DIODE TEMERATURE (°C) S hutdown requenc ...

Page 6

MIC184 Functional Diagram A2/ DATA CLK MIC184 Functional Description Pin Descriptions VDD Power supply input. See electrical specifications. GND Ground return for all MIC184 functions. CLK Clock input to the MIC184 from the two-wire serial bus. The clock ...

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MIC184 ...

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MIC184 MIC184 8 Micrel May 2006 ...

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MIC184 May 2006 9 Micrel MIC184 ...

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MIC184 the MIC184 may then be clocked out. There is one excep- tion to this rule: If the location latched in the pointer register from the last write operation is known to be correct (i.e., points to the desired register), ...

Page 11

MIC184 MIC184’s power consumption drops to 1µA typical in shutdown mode. All registers may be read from, or written to, while in shutdown mode. Serial bus activity will slightly increase the MIC184’s power consumption. Entering shutdown mode will not affect ...

Page 12

MIC184 Interrupt Polarity Selection The INT output can be programmed to behave as an active- low signal or an active-high signal. The default is active-low. INT polarity is selected by programming the appropriate value into the polarity bit (POL) in ...

Page 13

MIC184 Register Set and Programmer’s Model Internal Register Set ...

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MIC184 Temperature Result Register ...

Page 15

MIC184 Applications Information Switching Zones The recommended procedure for switching between the internal and external zones is as follows: 1. Disable interrupts (if used) by setting the IM bit in CONFIG. 2. Read the CONFIG register to: a) Verify no ...

Page 16

MIC184 from the device under test. 2. Write 0000 0010b (02h) to the CONFIG register. 3. Write 1100 1000 1000 0000b = C880h to T_SET and T_HYST. This corresponds to -55.5°C. 4. Wait t (160ms max.) for the part to ...

Page 17

MIC184 in most systems this will not be an issue. 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 ...

Page 18

MIC184 DATA 1 CLK 2 INT 3 GND 4 10k Pull-ups FROM SERIAL BUS HOST Figure 9. V MIC184 VDD GUARD/RETURN REMOTE DIODE (A2/T1) A2/T1 5 GUARD/RETURN Figure 8. Guard Traces/Kelvin Ground Returns 3.0V to ...

Page 19

MIC184 Package Information ����� ������ ����� ������ ����� ������ ����� ������ ����� ����� ������ ������ ��� May 2006 8-Lead SOIC (M) ����� ������ ����� ������ ����� ������ ����� ������ ����� ������ ����� ������ ����� ������ � ����� ������ � ��� ...

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... MIC184 MICREL INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA + 1 (408) 944-0800 TEL This information furnished by Micrel reserves the right to change circuitry and specifications at any time without notification to the customer. Micrel Products are not reasonably be expected to result in personal injury. Life support devices or systems are devices or systems that (a) are intended for surgical implant into the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a signifi ...

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