參數(shù)資料
型號： ADM1033ARQ-REEL
廠商： ON SEMICONDUCTOR
元件分類： 溫度/濕度傳感器
英文描述： DIGITAL TEMP SENSOR-SERIAL, 8BIT(s), 2Cel, RECTANGULAR, SURFACE MOUNT
封裝： MO-137AB, QSOP-16
文件頁數(shù)： 26/39頁
文件大?。?/td> 819K
代理商： ADM1033ARQ-REEL
ADM1033
Rev. 0 | Page 32 of 40
Address
R/W
Description
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Default
Lockable
0x3F\BF
R
Revision Register
7
6
5
4
3
2
1
0
0x02
N
0x40\C0
R
Local Temperature
4
3
2
1
0
RES
0x00
N
0x41\C1
R
Local Temperature
12
11
10
9
8
7
6
5
0x00
N
0x42\C2
R
Remote
Temperature
4
3
2
1
0
RES
0x00
N
0x43\C3
R
Remote
Temperature
12
11
10
9
8
7
6
5
0x00
N
0x4A\CA
R
TACH Period
7
6
5
4
3
2
1
0
0xFF
N
0x4B\CB
R
TACH Period
15
14
13
12
11
10
9
8
0xFF
N
0x4E\CE
R
THERM % On-Time
7
6
5
4
3
2
1
0
0x00
N
0x4F\CF
R
Status 1
LH
LL
RH
RL
RTH
RES
0x00
N
0x50\D0
R
Status 2
LT
RT
RES
%T
TA
TS
RES
0x00
N
0x51\D1
R
Status 3
FS
FA
RES
ALERT
0x00
N
Table 35. Register 0x00, # Bytes/Block Read, Power-On Reset = 0x20, Lock = Y, S/W Reset = Y
Bit
Name
R/W Description
<7:0>
# Bytes Block Read
R/W
Block reads are # bytes/block read long. The maximum is 32 bytes, the SMBus transaction limit.
Table 36. Register 0x01, Configuration Register 1, Power-On Default = 0x01, Lock = Y, SW Reset = Y
Bit
Name
R/W
Description
7
SW Con
R/W
Set to 1 to have look-up table control the fan speed. Set to 0 to put ADM1033 in software/manual
control mode. Default = 0.
6
Lock Bit
R/W
Set to 1 to prevent the user from writing to the ADM1033 registers. 1 = ADM1033 registers locked.
0 = ADM1033 registers unlocked. Default = 0.
5
SDA Timeout
R/W
1 = SDA timeout enabled. 0 = SDA timeout disabled. Default = 0.
4
SCL Timeout
R/W
1 = SCL timeout enabled. 0 = SDL timeout disabled. Default = 0.
3
Reserved
R/W
Reserved.
2
Enable THERM Timer
R/W
1 = timer enabled, 0 = timer disabled. Enables THERM as an input. Default = 0.
1
Averaging Off
R/W
Disables averaging at the slower conversion rates (8 Hz and slower). Averaging is automatically
disabled at the higher (16, 32, and 64) conversion rates. Default = Averaging On = 0.
0
Monitor/STBY
R/W
Set to 1 to enable monitoring of temperature. Set to 0 to disable temperature monitoring. Power-
On Default = 1.
Table 37. Register 0x02, Configuration Register 2, Power-On Default = 0x84, Lock = Y, SW Reset = Y
Bit
Name
R/W
Description
7
Round Robin
R/W
Enables round-robin mode. Set to 0 for single-channel mode. (The ADC converts on only one
channel, which is determined by the channel selector bits.) Default = Round Robin = 1.
<6:5>
Reserved
R/W
Reserved.
4
Channel Selector
R/W
0 = local temperature measurements, 1 = remote temperature measurements.
3
Reserved
R/W
Reserved.
2
Discrete/Linear RPM
R/W
Determines whether the fans run at discrete speeds or whether the fan speed increases with
temperature between the two thresholds. Default = 1 = linear.
1
Boost Disable
R/W
Set to 1 to prevent fans from being boosted, if either THERM temperature or THERM timer limits are
exceeded. Under these conditions, the fans run at the previously calculated speed. Default = 0.
0
SW Reset
R/W
Set this bit to 1 to reset the ADM1033 registers to their default values, excluding the limit registers,
offset registers, and look-up table registers. This bit self-clears. Default = 0.
Table 38. Register 0x03, Configuration Register 3, Power-On Default = 0x44, Lock = Y, SW Reset = Y
Bit
Name
R/W
Description
<7:4>
Unused
R/W
Reserved.
<3:0>
#Poles Fan
R/W
Write the number of poles in the fan to this register. Power-On Default = 4 poles = 100. This value
should be an even number only.
Rev. 1 | Page 32 of 39 | www.onsemi.com
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