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參數資料
| 型號： | MIC184BM TR |
| 廠商： | Micrel Inc |
| 文件頁數： | 6/20頁 |
| 文件大小： | 483K |
| 描述： | IC SUPERVISOR LOCAL/REMOTE 8SOIC |
| 標準包裝： | 2,500 |
| 功能： | 溫度監控系統（傳感器） |
| 傳感器類型： | 內部和外部 |
| 感應溫度： | -55°C ~ 125°C，外部傳感器 |
| 精確度： | ±2°C 本地（最大），±3°C 遠程（最大） |
| 拓撲： | ADC（三角積分型），寄存器庫 |
| 輸出類型： | I²C?/SMBus? |
| 輸出警報： | 是 |
| 輸出風扇： | 無 |
| 電源電壓： | 2.7 V ~ 5.5 V |
| 工作溫度： | -55°C ~ 125°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 8-SOIC（0.154"，3.90mm 寬） |
| 供應商設備封裝： | 8-SOIC |
| 包裝： | 帶卷 (TR) |
| 其它名稱： | MIC184BMTR MIC184BMTR-ND |
MIC184
Micrel
MIC184
6
May 2006
Functional Description
Pin Descriptions
VDD
Power supply input. See electrical specications.
GND
Ground return for all MIC184 functions.
CLK
Clock input to the MIC184 from the two-wire serial bus. The
clock signal is provided by the bus host and is shared by all
devices on the bus.
DATA
Serial data I/O pin that connects to the two-wire serial bus.
DATA is bidirectional and has an open-drain output driver.
An external pull-up resistor or current source somewhere in
the system is necessary on this line. This line is shared by
all devices on the bus.
A2/T1, A1, A0
These inputs set the three least signicant bits of the MIC184s
7-bit slave address. Each MIC184 will only respond to its own
unique slave address, allowing the use of up to eight MIC184s
on a single bus. A match between the MIC184s address and
Functional Diagram
2:1
MUX
TEMPERATURE-TO-DIGITAL
CONVERTER
1-Bit
DAC
2/T1
A1
A0
DATA
MIC184
CLK
INT
2-Wire
Serial Bus
Interface
Pointer
Register
Temperature
Hysteresis
Register
State
Machine
and
Digital
Comparator
Digital Filter
and
Control
Logic
Thermostat
Output
Configuration
Register
Bandgap
Sensor
and
Reference
Result
Register
Temperature
Setpoint
Register
the address specied in the serial bit stream must be made
to initiate communication. A1 and A0 should be connected
directly to V
DD
or ground. When A2/T1 is used as an address
bit input, it should also be tied to V
DD
or ground. A2/T1 can
alternatively connect to a remote temperature sensor. When
A2/T1 is used for temperature measurements, an off-chip di-
ode junction must be connected between A2/T1 and ground. In
this case, internal circuitry will detect A2 as logic low, leaving
four possible slave addresses. See Temperature Measure-
ment and Power On for more information. A2/T1, A1, and
A0 determine the slave address as shown in Table 1.
INT
Temperature events are indicated to external circuitry via this
output. INT may be congured as active-low or active-high
by the host. Operation of the INT output is controlled by the
MODE and POL bits in the MIC184s conguration register.
See Comparator and Interrupt Modes below. This output
is open-drain and may be wire-ORed with other open-drain
signals. Most systems will require a pull-up resistor or current
source on this pin. If the IM bit in the conguration register
is set, it prevents the INT output from sinking current. In
I
2
C and SMBus systems, the IM bit is therefore an interrupt
mask bit.
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