參數(shù)資料
型號(hào): ADT7476AARQZ-R
廠商: ON Semiconductor
文件頁(yè)數(shù): 49/66頁(yè)
文件大?。?/td> 945K
描述: IC REMOTE THERMAL CTLR 24QSOP
產(chǎn)品變化通告: MFG CHG Notification ADI to ON Semi
QSOP 24ld Pkg (MSL) Change 17/Jun/2010
標(biāo)準(zhǔn)包裝: 2,500
系列: dBCool®
功能: 風(fēng)扇控制,溫度監(jiān)控器
傳感器類型: 內(nèi)部和外部
感應(yīng)溫度: -40°C ~ 125°C
精確度: ±2.5%
拓?fù)洌?/td> ADC,比較器,風(fēng)扇速度計(jì)數(shù)器,多路復(fù)用器,寄存器庫(kù)
輸出類型: SMBus?
輸出警報(bào): 無(wú)
輸出風(fēng)扇:
電源電壓: 3 V ~ 3.6 V
工作溫度: -40°C ~ 125°C
安裝類型: 表面貼裝
封裝/外殼: 24-SSOP(0.154",3.90mm 寬)
供應(yīng)商設(shè)備封裝: 24-QSOP
包裝: 帶卷 (TR)
其它名稱: ADT7476AARQZ-R-ND
ADT7476AARQZ-ROSTR
ADT7476A
http://onsemi.com
49
Table 49. ADT7476A REGISTERS (continued)
Addr
Lock-
able
De-
fault
Bit 0
Bit 1
Bit 2
Bit 3
Bit 4
Bit 5
Bit 6
Bit 7
Desc
R/W
0x7A
R/W
THERM
 Timer
Limit
LIMT
LIMT
LIMT
LIMT
LIMT
LIMT
LIMT
LIMT
0x00

0x7B
R/W
TACH Pulses
per Revolution
FAN4
FAN4
FAN3
FAN3
FAN2
FAN2
FAN1
FAN1
0x55

0x7C
R/W
Configuration
Register 5
R2
THERM
Local
THERM
R1
THERM
VID/
GPIO
GPIO6P
GPIO6D
Temp
Offset
2sC
0x01
Yes
0x7D
R/W
Configuration
Register 4
BpAtt
12 V
BpAtt
5.0 V
BpAtt
V
CCP
BpAtt
2.5 V
Max
Speed
on
THERM
THERM
Disable
PIN14
FUNC
PIN14
FUNC
0x00
Yes
0x7E
R
Test 1
DO NOT WRITE TO THESE REGISTERS
0x00
Yes
0x7F
R
Test 2
DO NOT WRITE TO THESE REGISTERS
0x00
Yes
Table 50. REGISTER 0x10  CONFIGURATION REGISTER 6 (POWER-ON DEFAULT = 0x00) (Note 1 and 2)
Bit No.
Mnemonic
R/W
Description
[0]
SlowFan
Remote 1
R/W
When this bit is set, Fan 1 smoothing times are multiplied x4 for Remote 1 temperature
channel (as defined in Register 0x62).
[1]
SlowFan
Local
R/W
When this bit is set, Fan 2 smoothing times are multiplied x4 for local temperature channel
(as defined in Register 0x63).
[2]
SlowFan
Remote 2
R/W
When this bit is set, Fan 3 smoothing times are multiplied x4 for Remote 2 temperature
channel (as defined in Register 0x63).
[3]
THERM
 in
Manual
R/W
When this bit is set, THERM
 is enabled in manual mode. (Note 1)
[4]
SlaveEn
R/W
Setting this bit configures the ADT7476A as a slave for use in fan sync mode.
[5]
MasterEn
R/W
Setting this bit configures the ADT7476A as a master for use in fan sync mode.
[6]
V
CCP
 Low
R/W
VCCPLow = 1. When the power is supplied from 3.3 V STANDBY and the core voltage (VCCP)
drops below its VCCP low limit value (Register 0x46), the following occurs:
Status Bit 1 in Interrupt Status Register 1 is set.
SMBALERT
 is generated, if enabled.
PROCHOT
 monitoring is disabled.
Everything is re-enabled once VCCP increases above the VCCP low limit.When V
CCP
 increases
above the low limit:
PROCHOT
 monitoring is enabled.
Fans return to their programmed state after a spin-up cycle.
[7]
ExtraSlow
R/W
When this bit is set, all fan smoothing times are increased by a further 39.2%
1.  A THERM
 event always overrides any fan setting (even when fans are disabled).
2.  This register becomes read-only when the Configuration Register 1 Lock bit is set to 1. Any subsequent attempts to write to this register fail.
Table 51. REGISTER 0x11  CONFIGURATION REGISTER 7 (POWER-ON DEFAULT = 0x00) (Note 1)
Bit No.
Mnemonic
R/W
Description
[0]
DisTHERM
Hys
Read/Write
Setting This Bit to 1 Disables THERM
 Hysteresis
[7:1]
Reserved
N/A
Reserved. Do Not Write to These Bits
1.  This register becomes read-only when the Configuration Register 1 Lock bit is set to 1. Any subsequent attempts to write to this register fail.
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