参数资料
型号: ADT7468ARQ
厂商: ON Semiconductor
文件页数: 79/81页
文件大小: 0K
描述: IC REMOTE THERMAL CTRLR 24-QSOP
产品变化通告: MFG CHG Notification ADI to ON Semi
Product Obsolescence 11/Feb/2009
标准包装: 56
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: ±2°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: 管件
ADT7468
Table 56. Register 0x7D—Configuration Register 4 (Power-On Default = 0x00)
Bit
<1:0>
Name
PIN14FUNC
R/W 1
Read/write
Description
These bits set the functionality of Pin 14:
00 = TACH4 (default)
01 = Bidirectional THERM
10 = SMBALERT
11 = GPIO
<3:2>
AINL
Read/write
These two bits define the input threshold for 2-wire fan speed measurements (low frequency mode
only):
00 = ±20 mV
01 = ±40 mV
10 = ±80 mV
11 = ±130 mV
<4>
<5>
<6>
<7>
BpAtt2.5V
BpAttV CCP
BpAtt5V
BpAtt12V
Bypass 2.5 V attenuator. When set, the measurement scale for this channel changes from 0 V (0x00) to
2.2965 V (0xFF).
Bypass V CCP attenuator. When set, the measurement scale for this channel changes from 0 V (0x00) to
2.2965 V (0xFF).
Bypass 5 V attenuator. When set, the measurement scale for this channel changes from 0 V (0x00) to
2.2965 V (0xFF).
Bypass 12 V attenuator. When set, the measurement scale for this channel changes from 0 V (0x00) to
2.2965 V (0xFF).
1
This register becomes read-only when the Configuration Register 1 lock bit is set to 1. Any further attempts to write to this register have no effect.
Table 57. Register 0x7E—Manufacturer’s Test Register 1 (Power-On Default = 0x00)
Bit
<7:0>
Name
Reserved
R/W
Read only
Description
Manufacturer’s test register. These bits are reserved for manufacturer’s test purposes and should not
be written to under normal operation.
Table 58. Register 0x7F—Manufacturer’s Test Register 2 (Power-On Default = 0x00)
Bit
<7:0>
Name
Reserved
R/W
Read only
Description
Manufacturer’s test register. These bits are reserved for manufacturer’s test purposes and should not
be written to under normal operation.
Rev. 3 | Page 79 of 81 | www.onsemi.com
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