参数资料
型号: ADT7476AARQZ-R
厂商: ON Semiconductor
文件页数: 53/66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:
输出风扇:
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
ADT7476A
http://onsemi.com
53
Table 60. REGISTER 0x43  VID/GPIO REGISTER (POWER-ON DEFAULT = 0x1F)
Bit No.
Mnemonic
R/W
Description
[4:0]
VID[4:0]/
GPIO[4:0]
R/W
The VID[4:0] inputs from the CPU indicate the expected processor core voltage. On
powerup, these bits reflect the state of the VID pins, even if monitoring is not enabled. When
Bit 4 of Configuration Register 5 (0x7C) = 1, these bits become general-purpose outputs. The
state of these bits then reflects the state of the appropriate GPIO pin.
[5]
VID5
R/W
Reads VID5 from the CPU when Bit 7 = 1. If Bit 7 = 0, the VID5 bit always reads back 0
(power-on default).
[6]
THLD
R/W
Selects the input switching threshold for the VID inputs.
THLD = 0 selects a threshold of 1 V (V
OL
< 0.8 V, V
IH
> 1.7 V).
THLD = 1 lowers the switching threshold to 0.6 V (V
OL
< 0.4 V, V
IH
> 0.8 V).
[7]
VIDSEL
R/W
VIDSEL = 0 configures Pin 21 as the 12 V measurement input (Default).
Table 61. VOLTAGE LIMIT REGISTERS (Note 1)
Register Address
R/W
Description (Note 2)
Power-On Default
0x44
R/W
2.5 V Low Limit
0x00
0x45
R/W
2.5 V High Limit
0xFF
0x46
R/W
V
CCP
 Low Limit
0x00
0x47
R/W
V
CCP
 High Limit
0xFF
0x48
R/W
V
CC
 Low Limit
0x00
0x49
R/W
V
CC
 High Limit
0xFF
0x4A
R/W
5.0 V Low Limit
0x00
0x4B
R/W
5.0 V High Limit
0xFF
0x4C
R/W
12 V Low Limit
0x00
0x4D
R/W
12 V High Limit
0xFF
1.  Setting the Configuration Register 1 Lock bit has no effect on these registers.
2.  High limits: An interrupt is generated when a value exceeds its high limit (> comparison). Low limits: An interrupt is generated when a value
is equal to or below its low limit (?comparison).
Table 62. TEMPERATURE LIMIT REGISTERS (Note 1)
Register Address
R/W
Description (Note 2)
Power-On Default
0x4E
R/W
Remote 1 Temperature Low Limit
0x81
0x4F
R/W
Remote 1 Temperature High Limit
0x7F
0x50
R/W
Local Temperature Low Limit
0x81
0x51
R/W
Local Temperature High Limit
0x7F
0x52
R/W
Remote 2 Temperature Low Limit
0x81
0x53
R/W
Remote 2 Temperature High Limit
0x7F
1.  Exceeding any of these temperature limits by 1癈 causes the appropriate status bit to be set in the interrupt status register. Setting the
Configuration Register 1 Lock bit has no effect on these registers.
2.  High limits: An interrupt is generated when a value exceeds its high limit (> comparison). Low limits: An interrupt is generated when a value
is equal to or below its low limit (?comparison).
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