参数资料
| 型号： | ADT7475EBZEVB |
| 厂商： | ON Semiconductor |
| 文件页数： | 55/58页 |
| 文件大小： | 0K |
| 描述： | BOARD EVALUATION FOR ADT7475 |
| 产品变化通告： | MFG CHG Notification ADI to ON Semi |
| 标准包装： | 1 |
| 系列： | dBCool® |
| 类型： | 温度传感器 |
| 适用于相关产品： | ADT7475 |
| 所含物品： | 评估板 |
| 其它名称： | EVAL-ADT7475EB EVAL-ADT7475EB-ND |
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ADT7475
Table 79. REGISTER 0X77 ? EXTENDED RESOLUTION REGISTER 2 (Note 1)
Bit No.
<3:2>
<5:4>
<7:6>
Mnemonic
TDM1
LTMP
TDM2
R/W
R/W
R/W
R/W
Description
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.
Table 80. REGISTER 0X78 ? CONFIGURATION REGISTER 3 (POWER-ON DEFAULT = 0X00) (Note 1)
Bit No.
<0>
<1>
<2>
<3>
<4>
<5>
<6>
<7>
Mnemonic
ALERT
Enable
THERM
BOOST
FAST
DC1
DC2
DC3
DC4
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Description
ALERT = 1, Pin 5 (PWM2/SMBALERT) is configured as an SMBALERT interrupt output to
indicate out-of-limit error conditions.
THERM Enable = 1 enables THERM timer monitoring functionality on Pin 9. Also determined by
Bit 0 and Bit 1 (PIN9FUNC) of Configuration Register 4. When THERM is asserted, if the fans
are running and the boost bit is set, the fans run at full speed. Alternatively, THERM can be
programmed so that a timer is triggered to time how long THERM has been asserted.
When THERM is an input and BOOST = 1, assertion of THERM causes all fans to run at the
maximum programmed duty cycle for fail-safe cooling.
FAST = 1, enables fast TACH measurements on all channels. This increases the TACH
measurement rate from once per second to once every 250 ms (4x).
DC1 = 1, enables TACH measurements to be continuously made on TACH1. Fans must be driven
by dc. Setting this bit prevents pulse stretching because it is not required for dc-driven motors.
DC2 = 1, enables TACH measurements to be continuously made on TACH2. Fans must be driven
by dc. Setting this bit prevents pulse stretching because it is not required for dc-driven motors.
DC3 = 1, enables TACH measurements to be continuously made on TACH3. Fans must be driven
by dc. Setting this bit prevents pulse stretching because it is not required for dc-driven motors.
DC4 = 1, enables TACH measurements to be continuously made on TACH4. Fans must be driven
by dc. Setting this bit prevents pulse stretching because it is not required for dc-driven motors.
1. These registers become read-only when the Configuration Register 1 Lock bit is set to 1. Any subsequent attempts to write to these registers fail.
Table 81. REGISTER 0X79 ? THERM TIMER STATUS REGISTER (POWER-ON DEFAULT = 0X00)
Bit No.
<0>
<7:1>
Mnemonic
ASRT/
TMR0
TMR
R/W
Read-only
Read-only
Description
This bit is set high on the assertion of the THERM input and is cleared on read. If the THERM
assertion time exceeds 45.52 ms, this bit is set and becomes the LSB of the 8-bit TMR reading.
This allows THERM assertion times from 45.52 ms to 5.82 sec to be reported back with a
resolution of 22.76 ms.
Times how long THERM input is asserted. These seven bits read zero until the THERM
assertion time exceeds 45.52 ms.
Table 82. THERM TIMER LIMIT REGISTER (POWER-ON DEFAULT = 0X00)
Bit No.
<7:0>
Mnemonic
LIMT
R/W
R/W
Description
Sets the maximum THERM assertion length allowed before an interrupt is generated. This is an
8-bit limit with a resolution of 22.76 ms allowing THERM assertion limits of 45.52 ms to 5.82 sec
to be programmed. If the THERM assertion time exceeds this limit, Bit 5 (F4P) of Interrupt
Status Register 2 (0x42) is set. If the limit value is 0x00, an interrupt is generated immediately
on the assertion of the THERM input.
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| ADT7476 | 制造商:AD 制造商全称:Analog Devices 功能描述:dBCool Remote Thermal Controller and Voltage Monitor |
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| ADT7476AARQZ-REEL | 功能描述:IC REMOTE THERMAL CTRLR 24-QSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 热管理 系列:dBCool® 标准包装:1 系列:- 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:-40°C ~ 125°C，外部传感器 精确度:±2.5°C 本地（最大值），±5°C 远程（最大值） 拓扑:ADC，比较器，寄存器库 输出类型:2 线 SMBus? 输出警报:无 输出风扇:无 电源电压:2.7 V ~ 5.5 V 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:SOT-23-8 供应商设备封装:SOT-23-8 包装:Digi-Reel® 其它名称:296-22675-6 |
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