參數(shù)資料
型號(hào): MCP9808T-E/MS
廠商: Microchip Technology
文件頁(yè)數(shù): 22/52頁(yè)
文件大小: 1085K
描述: IC TEMP SENSOR DGTL I2C 8MSOP
標(biāo)準(zhǔn)包裝: 2,500
功能: 溫度監(jiān)控系統(tǒng)(傳感器)
傳感器類(lèi)型: 內(nèi)部
感應(yīng)溫度: -40°C ~ 125°C
精確度: ±1°C
拓?fù)洌?/td> ADC(三角積分型),寄存器庫(kù)
輸出類(lèi)型: 2 線(xiàn)串行,I²C?/SMBUS?
輸出警報(bào):
輸出風(fēng)扇:
電源電壓: 2.7 V ~ 5.5 V
工作溫度: -40°C ~ 125°C
安裝類(lèi)型: 表面貼裝
封裝/外殼: 8-TSSOP,8-MSOP(0.118",3.00mm 寬)
供應(yīng)商設(shè)備封裝: 8-MSOP
包裝: 帶卷 (TR)
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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