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参数资料
| 型号： | ADT7476AARQZ-R |
| 厂商： | ON Semiconductor |
| 文件页数： | 64/66页 |
| 文件大小： | 945K |
| 描述： | IC REMOTE THERMAL CTLR 24QSOP |
| 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 ~ 125°C |
| 精确度： | ±2.5% |
| 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： | 无 |
| 输出风扇： | 是 |
| 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) |
| 其它名称： | ADT7476AARQZ-R-ND ADT7476AARQZ-ROSTR |
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ADT7476A
http://onsemi.com
64
Table 86. REGISTER 0x7C CONFIGURATION REGISTER 5 (POWER-ON DEFAULT = 0x01) (Note 1)
Bit No.
Mnemonic
R/W
Description
[0]
2sC
R/W
2sC = 1 sets the temperature range to the twos complement temperature range.
2sC = 0 changes the temperature range to the Offset 64 temperature range. When this bit is
changed, the ADT7476A interprets all relevant temperature register values as defined by this bit.
[1]
Temp Offset
R/W
TempOffset = 0 sets offset range to 63癈 to +64癈 with 0.5癈 resolution.
TempOffset = 1 sets offset range to 63癈 to +127癈 with 1癈 resolution. These settings
apply to Remote 1, Local, and Remote 2 temperature offset registers (0x70, 0x71, and 0x72).
[2]
GPIO6D
R/W
GPIO6 direction. When GPIO6 function is enabled, this determines whether GPIO6 is an
input (0) or an output (1).
[3]
GPIO6P
R/W
GPIO6 polarity. When the GPIO6 function is enabled and is programmed as an output, this
bit determines whether the GPIO6 is active low (0) or high (1).
[4]
VID/GPIO
R/W
VID/GPIO = 0 enables VID functionality on Pin 5, Pin 6, Pin 7, Pin 8, and Pin 19.
VID/GPIO = 1 enables GPIO functionality on Pin 5, Pin 6, Pin 7, Pin 8, and Pin 19.
[5]
R1 THERM
R/W
R1 THERM
= 1 enables THERM
temperature limit functionality for Remote 1 temperature
channel; that is, THERM
is bidirectional.
R1 THERM
= 0 indicates THERM
is a timer input only. THERM
can also be disabled on any
channel by:
Writing 64癈 to the appropriate THERM
temperature limit in Offset 64 mode.
Writing 128癈 to the appropriate THERM
temperature limit in twos complement mode.
[6]
Local
THERM
R/W
Local THERM
= 1 enables THERM
temperature limit functionality for local temperature
channel; that is, THERM
is bidirectional.
Local THERM
= 0 indicates THERM
is a timer input only. THERM
can also be disabled on
any channel by:
Writing 64癈 to the appropriate THERM
temperature limit in Offset 64 mode.
Writing 128癈 to the appropriate THERM
temperature limit in twos complement mode.
[7]
R2 THERM
R/W
R2 THERM
= 1 enables THERM
temperature limit functionality for Remote 2 temperature
channel; that is, THERM
is bidirectional.
R2 THERM
= 0 indicates THERM
is a timer input only. THERM
can also be disabled on any
channel by:
Writing 64癈 to the appropriate THERM
temperature limit in Offset 64 mode.
Writing 128癈 to the appropriate THERM
temperature limit in twos complement mode.
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 87. REGISTER 0x7D CONFIGURATION REGISTER 4 (POWER-ON DEFAULT = 0x00) (Note 1)
Bit No.
Mnemonic
R/W
Description
[1:0]
PIN14FUNC
R/W
These bits set the functionality of Pin 14.
00 = TACH4 (Default)
01 = THERM
10 = SMBALERT
11 = GPIO
[2]
THERM
Disable
R/W
THERM
Disable = 0 enables THERM
overtemperature output assuming THERM
is correctly
configured (Registers 0x78, 0x7C, and 0x7D).
THERM
Disable = 1 disables THERM
overtemperature output on all channels.
THERM
can also be disabled on any channel by:
Writing 64癈 to the appropriate THERM
temperature limit in Offset 64 mode.
Writing 128癈 to the appropriate THERM
temperature limit in twos complement mode.
[3]
MaxSpeed
THERM
R/W
MaxSpeed on THERM
= 0 indicates that fans go to full speed when THERM
temperature
limit is exceeded.
MaxSpeed on THERM
= 1 indicates that fans go to max speed (0x38, 0x39, 0x3A) when
THERM
temperature limit is exceeded.
[4]
BpAtt 2.5 V
R/W
Bypass 2.5 V attenuator. When set, the measurement scale for this channel changes from
0 V (0x00) to 2.25 V (0xFF).
[5]
BpAtt V
CCP
R/W
Bypass V
CCP
attenuator. When set, the measurement scale for this channel changes from
0 V (0x00) to 2.25 V (0xFF).
[6]
BpAtt 5.0 V
R/W
Bypass 5.0 V attenuator. When set, the measurement scale for this channel changes from
0 V (0x00) to 2.25 V (0xFF).
[7]
BpAtt 12 V
R/W
Bypass 12 V attenuator. When set, the measurement scale for this channel changes from
0 V (0x00) to 2.25 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.
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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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