参数资料
型号: ADT7463ARQZ-REEL
厂商: ON Semiconductor
文件页数: 48/50页
文件大小: 726K
描述: IC REMOTE THERMAL CTRLR 24-QSOP
产品变化通告: MFG CHG Notification ADI to ON Semi
QSOP 24ld Pkg (MSL) Change 17/Jun/2010
标准包装: 2,500
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 ~ 120°C,外部传感器
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 ~ 5.5 V
工作温度: -40°C ~ 120°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)
ADT7463
http://onsemi.com
48
Table 81. REGISTER 0X79  THERM
 STATUS REGISTER (POWERON DEFAULT = 0X00)
Bit
Name
R/W
Description
<7:1>
TMR
Readonly
Times how long THERM
 input is asserted. These seven bits read 0 until the THERM
 assertion
time exceeds 45.52 ms.
<0>
ASRT/TMR0
Readonly
Is set high on the assertion of the THERM
 input. Cleared on read. If the THERM
 assertion time
exceeds 45.52 ms, this bit is set and becomes the LSB of the 8bit TMR reading. This allows
THERM
 assertion times from 45.52 ms to 5.82 s to be reported back with a resolution of
22.76 ms.
Table 82. REGISTER 0X7A  THERM
 LIMIT REGISTER (POWERON DEFAULT = 0X00)
Bit
Name
R/W
Description
<7:0>
LIMT
R/W
Sets maximum THERM
 assertion length allowed before an interrupt is generated. This is an
8bit limit with a resolution of 22.76 ms allowing THERM
 assertion limits of 45.52 ms to 5.82 s
to be programmed. If the THERM
 assertion time exceeds this limit, Bit 5 (F4P) of Interrupt
Status Register 2 (Reg. 0x42) is set. If the limit value is 0x00, an interrupt is generated
immediately upon the assertion of the THERM
 input.
Table 83. REGISTER 0X7B  FAN PULSES PER REVOLUTION REGISTER (POWERON DEFAULT = 0X55)
Bit
Mnemonic
R/W
Description
<1:0>
FAN1
R/W
Sets number of pulses to be counted when measuring Fan1 speed. Can be used to determine
fans pulses per revolution for unknown fan type.
Pulses Counted
00 = 1
01 = 2 (Default)
10 = 3
11 = 4
<3:2>
FAN2
R/W
Sets number of pulses to be counted when measuring FAN2 speed. Can be used to determine
fans pulses per revolution for unknown fan type.
Pulses Counted
00 = 1
01 = 2 (Default)
10 = 3
11 = 4
<5:4>
FAN3
R/W
Sets number of pulses to be counted when measuring FAN3 speed. Can be used to determine
fans pulses per revolution for unknown fan type.
Pulses Counted
00 = 1
01 = 2 (Default)
10 = 3
11 = 4
<7:6>
FAN4
R/W
Sets number of pulses to be counted when measuring FAN4 speed. Can be used to determine
fans pulses per revolution for unknown fan type.
Pulses Counted
00 = 1
01 = 2 (Default)
10 = 3
11 = 4
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