参数资料
型号: ADT7490ARQZ-R7
厂商: ON Semiconductor
文件页数: 64/75页
文件大小: 0K
描述: IC THERM MON FAN CTLR 24-QSOP
产品变化通告: MFG CHG Notification ADI to ON Semi
QSOP 24ld Pkg (MSL) Change 17/Jun/2010
Product Discontinuation 30/Sept/2011
标准包装: 1,000
系列: dBCool®
功能: 风扇控制,温度监控器
传感器类型: 内部和外部
感应温度: -40°C ~ 125°C
精确度: ±1.5°C(最小值)
拓扑: ADC,比较器,风扇速度计数器,多路复用器,寄存器库
输出类型: SMBus?
输出警报:
输出风扇:
电源电压: 3 V ~ 3.6 V
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 24-SSOP(0.154",3.90mm 宽)
供应商设备封装: 24-QSOP
包装: 带卷 (TR)
ADT7490
Table 89. REGISTER 0x75 ? INTERRUPT MASK REGISTER 2 (POWER-ON DEFAULT = 0x00)
Bit No.
[0]
[1]
[2]
[3]
[4]
[5]
[6]
[7]
Mnemonic
+12 V IN
OOL
FAN1
FAN2
FAN3
Fan4/
THERM
D1 FAULT
D2 FAULT
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Description
When Pin 21 is configured as a +12 V IN input, +12 V IN = 1 masks SMBALERT for out-of-limit
conditions on the +12 V IN channel.
OOL = 1 masks SMBALERT assertions when the OOL status bit is set.
Note that the OOL mask bit is independent of the individual mask bits in Interrupt Mask
Register 3 (0x82). Therefore, if the intention is to mask SMBALERT assertions for any of the
Interrupt Status Register 4 bits, OOL must also be masked.
FAN1 = 1 masks SMBALERT for a Fan 1 fault.
FAN2 = 1 masks SMBALERT for a Fan 2 fault.
FAN3 = 1 masks SMBALERT for a Fan 3 fault.
If Pin 14 is configured as TACH4, Fan4/THERM = 1 masks SMBALERT for a Fan 4 fault. If
Pin 14 i s configured as THERM, Fan4/THERM = 1 masks SMBALERT for an exceeded
THERM timer limit.
D1 = 1 masks SMBALERT for a diode open or short on a Remote 1 channel.
D2 = 1 masks SMBALERT for a diode open or short on a Remote 2 channel.
Table 90. REGISTER 0x76 ? EXTENDED RESOLUTION REGISTER 1 (POWER-ON DEFAULT = 0x00) (Note 1)
Bit No.
[1:0]
[3:2]
[5:4]
[7:6]
Mnemonic
+2.5 V IN
V CCP
V CC
+5 V IN
R/W
Read-only
Read-only
Read-only
Read-only
Description
+2.5 V IN LSBs. Holds the 2 LSBs of the 10-bit +2.5 V IN Measurement
V CCP LSBs. Holds the 2 LSBs of the 10-bit V CCP Measurement
V CC LSBs. Holds the 2 LSBs of the 10-bit V CC Measurement
+5 V IN LSBs. Holds the 2 LSBs of the 10-bit +5 V IN Measurement
1. If this register is read, this register and the registers holding the MSB of each reading are frozen until read.
Table 91. REGISTER 0x77 ? EXTENDED RESOLUTION REGISTER 2 (POWER-ON DEFAULT = 0x00) (Note 1)
Bit No.
[1:0]
[3:2]
[5:4]
[7:6]
Mnemonic
+12 V IN
TDM1
LTMP
TDM2
R/W
Read-only
Read-only
Read-only
Read-only
Description
+12 V IN LSBs. Holds the 2 LSBs of the 10-bit +12 V IN Measurement
Remote 1 Temperature LSBs. Holds the 2 LSBs of the 10-bit Remote 1 Temperature
Measurement
Local Temperature LSBs. Holds the 2 LSBs of the 10-bit Local Temperature Measurement
Remote 2 Temperature LSBs. Holds the 2 LSBs of the 10-bit Remote 2 Temperature
Measurement
1. If this register is read, this register and the registers holding the MSB of each reading are frozen until read.
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