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| 型號(hào)： | ADT7476ARQZ-REEL7 |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 溫度/濕度傳感器 |
| 英文描述： | DIGITAL TEMP SENSOR-SERIAL, 10BIT(s), 2.50Cel, RECTANGULAR, SURFACE MOUNT |
| 封裝： | ROHS COMPLIANT, MO-137AE, QSOP-24 |
| 文件頁(yè)數(shù)： | 54/72頁(yè) |
| 文件大?。?/td> | 5219K |
| 代理商： | ADT7476ARQZ-REEL7 |
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ADT7476
Rev. B | Page 58 of 72
Table 26. Register 0x40—Configuration Register 1 (Power-On Default = 0x04)
Bit
Name
R/W
Description
[0]
R/W
Logic 1 enables monitoring and PWM control outputs based on the limit settings programmed.
Logic 0 disables monitoring and PWM control based on the default power-up limit settings.
Note that the limit values programmed are preserved even if a Logic 0 is written to this bit and the
default settings are enabled. This bit does not become locked once Bit 1 (LOCK bit) has been set.
[1]
LOCK
Write once
Logic 1 locks all limit values to their current settings. Once this bit is set, all lockable registers become
read-only and cannot be modified until the ADT7476 is powered down and powered up again. This
prevents rogue programs such as viruses from modifying critical system limit settings. (This bit is
lockable.)
[2]
RDY
Read-only
This bit is set to 1 by the ADT7476 to indicate only that the device is fully powered up and ready to begin
system monitoring.
[3]
FSPD
R/W
When set to 1, this bit runs all fans at maximum speed as programmed in the PWM maximum duty cycle
registers (0x38 to 0x3A). Power-on default = 0. This bit is not locked at any time.
[4]
Vx1
R/W
BIOS should set this bit to a 1 when the ADT7476 is configured to measure current from an ADI ADOPT
VRM controller and to measure the CPU’s core voltage. This bit allows monitoring software to display
CPU watts usage. (This bit is lockable.)
[5]
FSPDIS
R/W
Logic 1 disables fan spin-up for two TACH pulses. Instead, the PWM outputs go high for the entire fan
spin-up timeout selected.
[6]
TODIS
R/W
When this bit is set to 1, the SMBus timeout feature is enabled.
In this state, if at any point during an SMBus transaction involving the ADT7476 activity ceases for more
than 35 ms, the ADT7476 assumes that the bus is locked and releases the bus. This allows the ADT7476
to be used with SMBus controllers that cannot handle SMBus timeouts. (This bit is lockable.)
1 Bit 0 (STRT) of Configuration Register 1 (0x40) remains writable after the LOCK bit is set.
2 When monitoring (STRT) is disabled, PWM outputs always go to 100% for thermal protection.
Table 27. Register 0x41—Interrupt Status Register 1 (Power-On Default = 0x00)
Bit
Name
R/W
Description
[0]
2.5 V/
THERM
Read-only
2.5 V = 1 indicates that the 2.5 V high or low limit has been exceeded. This bit is cleared on a read of the
status register only if the error condition has subsided. If Pin 22 is configured as THERM, this bit is
asserted when the timer limit has been exceeded.
[1]
VCCP
Read-only
VCCP = 1 indicates that the VCCP high or low limit has been exceeded. This bit is cleared on a read of the
status register only if the error condition has subsided.
[2]
VCC
Read-only
VCC = 1 indicates that the VCC high or low limit has been exceeded. This bit is cleared on a read of the
status register only if the error condition has subsided.
[3]
5 V
Read-only
A 1 indicates that the 5 V high or low limit has been exceeded. This bit is cleared on a read of the status
register only if the error condition has subsided.
[4]
R1T
Read-only
R1T = 1 indicates that the Remote 1 low or high temperature has been exceeded. This bit is cleared on a
read of the status register only if the error condition has subsided.
[5]
LT
Read-only
LT = 1 indicates that the local low or high temperature has been exceeded. This bit is cleared on a read of
the status register only if the error condition has subsided.
[6]
R2T
Read-only
R2T = 1 indicates that the Remote 2 low or high temperature has been exceeded. This bit is cleared on a
read of the status register only if the error condition has subsided.
[7]
OOL
Read-only
OOL = 1 indicates that an out-of-limit event has been latched in Interrupt Status Register 2. This bit is a
logical OR of all status bits in Interrupt Status Register 2. Software can test this bit in isolation to
determine whether any of the voltage, temperature, or fan speed readings represented by Interrupt
Status Register 2 are out-of-limit, which saves the need to read Interrupt Status Register 2 during every
interrupt or polling cycle.
OOL = 0, when one or more alerts are generated in Interrupt Status Register 2, assuming all the mask bits
in the Interrupt Mask Register 2 (0x75) =1, SMBALERT is still asserted.
OOL = 1, when one or more alerts are generated in Interrupt Status Register 2, assuming all the mask bits
in the Interrupt Mask Register 2 (0x75) =1, SMBALERT is not asserted.
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| ADT7476EBZEVB | 功能描述:BOARD EVALUATION FOR ADT7476 RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 過時(shí)/停產(chǎn)零件編號(hào) 系列:dBCool® 標(biāo)準(zhǔn)包裝:1 系列:- 傳感器類型:CMOS 成像，彩色（RGB） 傳感范圍:WVGA 接口:I²C 靈敏度:60 fps 電源電壓:5.7 V ~ 6.3 V 嵌入式:否 已供物品:成像器板 已用 IC / 零件:KAC-00401 相關(guān)產(chǎn)品:4H2099-ND - SENSOR IMAGE WVGA COLOR 48-PQFP4H2094-ND - SENSOR IMAGE WVGA MONO 48-PQFP |
| ADT7481 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Dual Channel Temperature Sensor and Over Temperature Alarm |
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| ADT7481ARMZ-001 | 功能描述:板上安裝溫度傳感器 2 CH TEMP SNSR/ALARM 2 WIRE SMBUS INTRFCE RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準(zhǔn)確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關(guān)閉: 安裝風(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor |
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