参数资料
型号: NCT72DMTR2G
厂商: ON Semiconductor
文件页数: 2/20页
文件大小: 326K
描述: IC REMOTE THERMAL SENSOR 8-WDFN
标准包装: 1
功能: 温度监控系统(传感器)
传感器类型: 内部和外部
感应温度: 0°C ~ 127°C,-64°C ~ 191°C
精确度: ±2.5°C
拓扑: ADC,比较器,多路复用器,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: 2.8 V ~ 3.6 V
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 8-WFDFN
供应商设备封装: 8-WDFN(2x2)
包装: 标准包装
其它名称: NCT72DMTR2GOSDKR
NCT72
http://onsemi.com
2
Figure 1. Functional Block Diagram
ON-CHIP
TEMPERATURE
SENSOR
ANALOG
MUX
BUSY
A-TO-D
CONVERTER
LOCAL TEMPERATURE
VALUE REGISTER
REMOTE OFFSET
REGISTER
RUN/STANDBY
EXTERNAL DIODE OPEN-CIRCUIT
STATUS REGISTER
SMBus/I
2
C INTERFACE
INTERRUPT
MASKING
SDATA
SCLK
8
7
ADDRESS POINTER
REGISTER
CONVERSION RATE
REGISTER
LOCAL TEMPERATURE
LOW-LIMIT REGISTER
LOCAL TEMPERATURE
HIGH-LIMIT REGISTER
REMOTE TEMPERATURE
LOW-LIMIT REGISTER
REMOTE TEMPERATURE
HIGH-LIMIT REGISTER
LOCAL THERM
LIMIT REGISTERS
EXTERNAL THERM
LIMIT REGISTERS
CONFIGURATION
REGISTERS
4
6
GND
5
V
DD
1
NCT72
D+
ALERT
/THERM2
THERM
2
D
3
REMOTE TEMPERATURE
VALUE REGISTER
Table 1. PIN ASSIGNMENT
Pin No.
Mnemonic
Description
1
V
DD
Positive Supply, 2.8 V to 3.6 V.
2
D+
Positive Connection to Remote Temperature Sensor.
3
D
Negative Connection to Remote Temperature Sensor.
4
THERM
Open-drain Output. Can be used to turn a fan on/off or throttle a CPU clock in the event of an
overtemperature condition. Requires pullup resistor.
5
GND
Supply Ground Connection.
6
ALERT
/THERM2
Open-drain Logic Output Used as Interrupt or SMBus ALERT
. This can also be configured as a
second THERM
 output. Requires pullup resistor.
7
SDATA
Logic Input/Output, SMBus Serial Data. Open-drain Output. Requires pullup resistor.
8
SCLK
Logic Input, SMBus Serial Clock. Requires pullup resistor.
NOTE: The ground slug on 3x3 package can be left unconnected.
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