參數(shù)資料
型號(hào): ADT7463ARQZ-REEL
廠商: ON Semiconductor
文件頁(yè)數(shù): 48/50頁(yè)
文件大?。?/td> 726K
描述: IC REMOTE THERMAL CTRLR 24-QSOP
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 ~ 120°C,外部傳感器
精確度: ±1.5°C(最小值)
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 ~ 5.5 V
工作溫度: -40°C ~ 120°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)
ADT7463
http://onsemi.com
48
Table 81. REGISTER 0X79  THERM
 STATUS REGISTER (POWERON DEFAULT = 0X00)
Bit
Name
R/W
Description
<7:1>
TMR
Readonly
Times how long THERM
 input is asserted. These seven bits read 0 until the THERM
 assertion
time exceeds 45.52 ms.
<0>
ASRT/TMR0
Readonly
Is set high on the assertion of the THERM
 input. Cleared on read. If the THERM
 assertion time
exceeds 45.52 ms, this bit is set and becomes the LSB of the 8bit TMR reading. This allows
THERM
 assertion times from 45.52 ms to 5.82 s to be reported back with a resolution of
22.76 ms.
Table 82. REGISTER 0X7A  THERM
 LIMIT REGISTER (POWERON DEFAULT = 0X00)
Bit
Name
R/W
Description
<7:0>
LIMT
R/W
Sets maximum THERM
 assertion length allowed before an interrupt is generated. This is an
8bit limit with a resolution of 22.76 ms allowing THERM
 assertion limits of 45.52 ms to 5.82 s
to be programmed. If the THERM
 assertion time exceeds this limit, Bit 5 (F4P) of Interrupt
Status Register 2 (Reg. 0x42) is set. If the limit value is 0x00, an interrupt is generated
immediately upon the assertion of the THERM
 input.
Table 83. REGISTER 0X7B  FAN PULSES PER REVOLUTION REGISTER (POWERON DEFAULT = 0X55)
Bit
Mnemonic
R/W
Description
<1:0>
FAN1
R/W
Sets number of pulses to be counted when measuring Fan1 speed. Can be used to determine
fans pulses per revolution for unknown fan type.
Pulses Counted
00 = 1
01 = 2 (Default)
10 = 3
11 = 4
<3:2>
FAN2
R/W
Sets number of pulses to be counted when measuring FAN2 speed. Can be used to determine
fans pulses per revolution for unknown fan type.
Pulses Counted
00 = 1
01 = 2 (Default)
10 = 3
11 = 4
<5:4>
FAN3
R/W
Sets number of pulses to be counted when measuring FAN3 speed. Can be used to determine
fans pulses per revolution for unknown fan type.
Pulses Counted
00 = 1
01 = 2 (Default)
10 = 3
11 = 4
<7:6>
FAN4
R/W
Sets number of pulses to be counted when measuring FAN4 speed. Can be used to determine
fans pulses per revolution for unknown fan type.
Pulses Counted
00 = 1
01 = 2 (Default)
10 = 3
11 = 4
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