参数资料
型号: MIC281-5BM6 TR
厂商: Micrel Inc
文件页数: 7/14页
文件大小: 657K
描述: IC SUPERVISOR THERMAL SOT23-6
标准包装: 3,000
系列: IttyBitty®
功能: 温度监控系统(传感器)
传感器类型: 外部
感应温度: 外部传感器
精确度: ±3°C(最小值)
拓扑: ADC,寄存器库
输出类型: I²C?/SMBus?
输出警报:
输出风扇:
电源电压: 3 V ~ 3.6 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: SOT-23-6
供应商设备封装: SOT-23-6
包装: 带卷 (TR)
其它名称: MIC281-5BM6TR
MIC281-5BM6TR-ND
icrel, Inc.
MIC281
 
 
pril 23, 2014
7
Revision 2.0
 
Functional Description
Serial Port Operation
The MIC281 uses standard SMBus Write_Byte and Read_Byte operations for communication with its host. The SMBus
Write_Byte operation involves sending the devices slave address (with the R/W bit low to signal a write operation),
followed by a command byte and the data byte. The SMBus Read_Byte operation is a composite write and read
operation: the host rst sends the devices slave address followed by the command byte, as in a write operation. A new
start bit must then be sent to the MIC281, 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. These protocols are shown in Figures 1 and 2.
The Command byte is eight bits (one byte) wide. This byte carries the address of the MIC281 register to be operated
upon. The command byte values corresponding to the various MIC281 registers are shown in Table 1. Other command
byte values are reserved, and should not be used. 
 
Figure 1. Write_Byte Protocol
 
 
Figure 2. Read_Byte Protocol
 
Table 1. MIC281 Register Addresses
Target Register
Command Byte Value
Power-on Default
Label
Description
Read
Write
 
TEMP
Remote temperature result
01
h
 
N/A
00
h
 (0癈)
CONFIG
Configuration
03
h
 
03
h
 
80
h
 
MFG_ID
Manufacturer identification
FE
h
 
N/A
2A
h
 
DEV_ID
Device and revision identification
FF
h
 
N/A
0x
h
(10)
 
Note:
10. The lower nibble contains the die revision level (e.g., Rev. 0 = 00h).
 
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