LM87CIMTX National Semiconductor, LM87CIMTX Datasheet - Page 29

• Manufacturer Part Number: LM87CIMTX
• Description: IC,Data Acquisition System,8-CHANNEL,8-BIT,TSSOP,24PIN,PLASTIC
• Manufacturer: National Semiconductor

Specifications of LM87CIMTX

• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Bit
Bit
Bit
6
7
0
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
Functional Description
13.16 Interrupt Status Register 2 Mirror — Address 4Dh
Power on default –
13.17 SMBALERT# Enable — Address 80h
Power on default –
13.18 Value RAM — Address 19h–3Fh
Address A6–A0
+12Vin
Vccp2
Reserved
Reserved
CI
THERM#
D1 Fault
D2 Fault
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
SMBALERT#
Enable
Reserved
FAN1/AIN1
FAN2/AIN2
1Ah
1Bh
19h
20h
21h
22h
23h
24h
25h
26h
27h
28h
29h
Name
Name
Name
Read Only
Read Only
<
<
Read Only
7:0
7:0
DAC data register; power on default
AIN1 Low Limit
AIN2 Low Limit
+2.5V/External Temperature 2 reading
Vccp1 reading
+Vcc reading
+5V reading
+12V reading
Vccp2 reading
External Temperature 1 reading
Internal Temperature reading
FAN1/AIN1 reading
Note: For the FAN reading, this location stores the number of counts of the internal clock per
revolution.
FAN2/AIN2 reading
Note: For the FAN reading, this location stores the number of counts of the internal clock per
revolution.
>
>
Read Only
Read Only
Read Only
Read Only
Read Only
Read Only
Read Only
Read Only
Read Only
Read Only
Read Only
Read Only
Read Only
Read Only
Read/Write
Read Only
Read/Write
= 0000 0000 binary
= 0010 0000 binary
Read Only
A one indicates the fan count limit has been exceeded or an AIN1 High or Low limit has
been exceeded.
A one indicates the fan count limit has been exceeded or an AIN2 High or Low limit has
been exceeded.
(Continued)
A one indicates a High or Low limit has been exceeded.
A one indicates a High or Low limit has been exceeded.
A one indicates the CI (Chassis Intrusion) input has gone high.
A one indicates the THERM# input has been pulled low by external circuitry.
A one indicates the D1 inputs are shorted to Vcc or open circuit.
A one indicates the D2 inputs are shorted to Vcc or open circuit.
A one enables the SMBALERT# mode of operation.
<
7:0
29
>
=1111 1111 binary
Description
Description
Description
Description
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