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ADM1033ARQZ-REEL

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30P31-P33P34-P35
ADM1033
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Table 38. REGISTER 0X02, CONFIGURATION REGISTER 2, POWER-ON DEFAULT 0X84, LOCK = Y, S/W RESET = Y
Bit Name R/W Description
7 Round Robin R/W This bit enables the round-robin mode. Set this bit to 0 to put the ADM1033 in
single-channel mode. The ADC converts on one channel only, which is determined
by the channel selector bits. Default = Round Robin = 1.
6 Reserved R/W Reserved
<5:4> Channel Selector R/W This bit determines the channel on which the ADC converts.
00 = Local Channel Only
01 = Remote 1 Channel Only
10 = Reserved
11 = Reserved
3 Reserved R/W Reserved
2 Discrete/Linear Speed R/W This bit determines whether the fans run at discrete speeds or at speeds that
increase with temperature between the two thresholds. Default = 1 = Linear.
1 Boost Disable R/W Set bit to 1 to prevent the fans from being boosted if either THERM temperature or
THERM timer limits are exceeded. Under these conditions, the fan runs 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 39. REGISTER 0X03, CONFIGURATION REGISTER 3, POWER-ON DEFAULT 0X04, LOCK = Y, S/W RESET = Y
Bit Name R/W Description
<7:4> Reserved R/W Reserved
<3:0> #Poles Fan R/W Write the number of poles in Fan to this register. power-on default = 4 poles = 100.
This should always be an even number, because there cannot be an odd number of
poles in a fan.
Table 40. REGISTER 0X04, CONFIGURATION REGISTER 4, POWER-ON DEFAULT 0X00, LOCK = Y, S/W RESET = Y
Bit Name R/W Description
7 FAN_FAULT/REF R/W This bit sets the function for Pin 8. 0 = Default = FAN_FAULT output (THERM input
is CMOS). 1 = Reference input for THERM
.
<6:4> THERM % Time Window R/W These bits set the time window over which THERM % is calculated.
000 = 0.25 second
001 = 0.5 second
010 = 1 second
011 = 2 seconds
100 = 4 seconds
101 = 8 seconds
110 = 8 seconds
111 = 8 seconds
3 XOR Test R/W Set this bit to 1 to enable the XOR connectivity test.
2 Reserved R/W Reserved
1 Enable Remote 1 THERM
Events
R/W This bit enables THERM assertions as an output. Functions when the THERM timer
is enabled and the Remote 1 temperature exceeeds its THERM
limit.
0 Enable Local THERM
Events
R/W This bit enables THERM assertions as an output. Functions when the THERM timer
is enabled and the local temperature exceeeds its THERM
limit.
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Table 41. REGISTER 0X05, CONFIGURATION RATE REGISTER, POWER-ON DEFAULT 0X07, LOCK = Y, S/W
RESET = Y
Bit Name R/W Description
7 Reserved R This bit is reserved for future use. Do not write to this bit.
<6:4> Reserved R Reserved.
<3:0> Conversion Rate R/W These four bits set the conversion rate of the ADM1033. Changing these bits does not
update the conversion rate until the start of the next round robin.
0000 = 0.0625 conversions/second
0001 = 0.125 conversions/second
0010 = 0.25 conversions/second
0011 = 0.5 conversions/second
0100 = 1 conversion/second
0110 = 4 conversions/second
0111 = 8 conversions/second = Default
1000 = 16 conversions/second
1001 = 32 conversions/second
1010 = 64 conversions/second
Table 42. REGISTER 0X06, FAULT QUEUE, POWER-ON DEFAULT 0X01, LOCK = Y, S/W RESET = Y
Bit Name R/W Description
<7:4> Unused R Reserved.
<3:0> Fault Queue Length R/W These four bits set the fault queue (the number of out-of-limit measurements made
before an ALERT
is generated).
000x = 1
001x = 2
01xx = 3
1xxx = 4
Table 43. REGISTER 0X07, FAN BEHAVIOR REGISTER, POWER-ON DEFAULT 0X01, LOCK = Y, S/W RESET = Y
Bit Name R/W Description
6 Fan 1 Off R/W Set this bit to 1 to switch off Fan 1.
5 Res R Reserved
4 Res R Reserved
<1:0> DRIVE1 BHVR R/W These bits determine which temperature source controls the DRIVE1 output.
00 = Local temperature controls DRIVE1
01 = Remote 1 temperature controls DRIVE1
10 = Remote 2 temperature controls DRIVE1
11 = DRIVE1 full speed
Table 44. REGISTER 0X08, MASK REGISTER 1, POWER-ON DEFAULT 0X50, LOCK = N, S/W RESET = Y
Bit Name R/W Description
7 Local High R/W A 1 disables the corresponding interrupt status bit from causing the interrupt output to
be set. The status bit is not affected. Default = 0.
6 Local Low R/W A 1 disables the corresponding interrupt status bit from causing the interrupt output to
be set. The status bit is not affected. Default = 1.
5 Remote 1 High R/W A 1 disables the corresponding interrupt status bit from causing the interrupt output to
be set. The status bit is not affected. Default = 0.
4 Remote 1 Low R/W A 1 disables the corresponding interrupt status bit from causing the interrupt output to
be set. The status bit is not affected. Default = 1.
3 Remote 1 Diode Error R/W A 1 disables the corresponding interrupt status bit from causing the interrupt output to
be set. The status bit is not affected. Default = 0.
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Table 45. REGISTER 0X09, MASK REGISTER 2, POWER-ON DEFAULT 0X18, LOCK = N, S/W RESET = Y
Bit Name R/W Description
<7:5> Unused R Unused
4 THERM % R/W A 1 disables the corresponding interrupt status bit, preventing it from causing the
interrupt output. The status bit is not affected. Default = 1.
3 THERM Assert R/W A 1 disables the corresponding interrupt status bit, preventing it from causing the
interrupt output. The status bit is not affected. Default = 0.
2 THERM_State R/W A 1 disables the corresponding interrupt status bit, preventing it from causing the
interrupt output. The status bit is not affected. Default = 0. This bit has no effect in
ALERT comparator mode, because the corresponding status bit does not generate an
ALERT in that mode.
<1:0> Unused R Unused
Table 46. REGISTER 0X0A, MASK REGISTER 3, POWER-ON DEFAULT 0X00, LOCK = N, S/W RESET = Y
Bit Name R/W Description
7 Fan 1 Stalled R/W A 1 disables the corresponding interrupt status bit, preventing it from causing the
interrupt output. The status bit is not affected. Default = 0.
6 Fan Alarm Speed R/W A 1 disables the corresponding interrupt status bit, preventing it from causing the
interrupt output. The status bit is not affected. Default = 0.
4 Reserved R Reserved. Default = 0.
3 Reserved R Reserved. Default = 0.
2 Reserved R Reserved. Default = 0.
1 Reserved R Reserved. Default = 0.
0 Reserved R Reserved. Default = 0.
Table 47. REGISTER 0X0B, LOCAL HIGH LIMIT, POWER-ON DEFAULT 0X8B, LOCK = N, S/W RESET = N
Bit Name R/W Description
<7:0> Local High Limit R/W When the local temperature exceeds this temperature, the corresponding interrupt
status bit is set.
Table 48. REGISTER 0X0C, LOCAL LOW LIMIT, POWER-ON DEFAULT 0X54, LOCK = N, S/W RESET = N
Bit Name R/W Description
<7:0> Local Low Limit R/W When the local temperature falls below this temperature, the corresponding interrupt
status bit is set.
Table 49. REGISTER 0X0D, LOCAL THERM LIMIT, POWER-ON DEFAULT 0X95, LOCK = Y, S/W RESET = Y
Bit Name R/W Description
<7:0> Local THERM Limit R/W When the local temperature exceeds this temperature, the corresponding status bit is
set and the THERM
output is activated.
Table 50. REGISTER 0X0E, REMOTE 1 HIGH LIMIT, POWER-ON DEFAULT 0X8B, LOCK = N, S/W RESET = N
Bit Name R/W Description
<7:0> Remote 1 High Limit R/W When the Remote 1 temperature exceeds this temperature, the corresponding interrupt
status bit is set.
Table 51. REGISTER 0X0F, REMOTE 1 LOW LIMIT, POWER-ON DEFAULT 0X54, LOCK = N, S/W RESET = N
Bit Name R/W Description
<7:0> Remote 1 Low Limit R/W When the Remote 1 temperature falls below this temperature, the corresponding
interrupt status bit is set.
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30P31-P33P34-P35

ADM1033ARQZ-REEL

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Buy ADM1033ARQZ-REEL
Manufacturer:
ON Semiconductor
Description:
Board Mount Temperature Sensors +/- 1 C Digital 2-Wire
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