参数资料
型号: MCP9808-E/MS
厂商: Microchip Technology
文件页数: 22/52页
文件大小: 1085K
描述: IC TEMP SENSOR DGTL I2C 8MSOP
标准包装: 100
功能: 温度监控系统(传感器)
传感器类型: 内部
感应温度: -40°C ~ 125°C
精确度: ±1°C
拓扑: ADC(三角积分型),寄存器库
输出类型: 2 线串行,I²C?/SMBUS?
输出警报:
输出风扇:
电源电压: 2.7 V ~ 5.5 V
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 8-TSSOP,8-MSOP(0.118",3.00mm 宽)
供应商设备封装: 8-MSOP
包装: 管件
MCP9808
DS25095A-page 22
?2011 Microchip Technology Inc.
5.1.2
UPPER/LOWER/CRITICAL
TEMPERATURE LIMIT REGISTERS
(T
UPPER
/T
LOWER
/T
CRIT
)
The MCP9808 has a 16-bit read/write Alert Output
Temperature Upper Boundary register (T
UPPER
), a 16-bit
Lower Boundary register (T
LOWER
) and a 16-bit Critical
Boundary register (T
CRIT
) that contain 11-bit data in
twos complement format (0.25癈). This data represents
the maximum and minimum temperature boundary or
temperature window that can be used to monitor
ambient   temperature.   If   this   feature   is   enabled
(Section 5.1.1    Sensor    Configuration    Register
(CONFIG)) and the ambient temperature exceeds the
specified boundary or window, the MCP9808 asserts an
Alert output. (Refer to Section 5.2.3  Alert  Output
Configuration).
 
REGISTER 5-3:
T
UPPER
/T
LOWER
/T
CRIT
UPPER/LOWER/CRITICAL TEMPERATURE LIMIT REGISTER
(?/SPAN> ADDRESS 0000  0010b/0000  0011b/0000 0100b)
(1)
U-0
U-0
U-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0



Sign
2
7
2
6
2
5
2
4
bit 15
bit 8
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
U-0
U-0
2
3
2
2
2
1
2
0
2
-1
2
-2


bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as 0
-n = Value at POR
1 = Bit is set
0 = Bit is cleared
x = Bit is unknown
bit 15-13
Unimplemented: Read as 0
bit 12
Sign: Sign bit
0 =  T
A
 e 0癈
1 =  T
A
 < 0癈
bit 11-2
T
UPPER
/T
LOWER
/T
CRIT
: Temperature Boundary bits
Temperature boundary trip data in twos complement format.
bit 1-0
Unimplemented: Read as 0
Note  1:   This table shows two 16-bit registers for T
UPPER
, T
LOWER
 and T
CRIT
, located at 0000  0010b,
0000  0011b and 0000  0100b, respectively.
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