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LM80 Datasheet(PDF) 27 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
No. de pieza LM80
Descripción Electrónicos  Serial Interface ACPI-Compatible Microprocessor System Hardware Monitor
PDF  29 Pages
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Fabricante Electrónico  NSC [National Semiconductor (TI)]
Página de inicio  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM80 Datasheet(HTML) 27 Page - National Semiconductor (TI)

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Functional Description (Continued)
12.10 Value RAM — Address 20h–3Fh
Address A7–A0
Description
20h
IN0 reading
21h
IN1 reading
22h
IN2 reading
23h
IN3 reading
24h
IN4 reading
25h
IN5 reading
26h
IN6 reading
27h
Temperature reading
28h
FAN1 reading
Note: This location stores the number of counts of the internal clock per revolution.
29h
FAN2 reading
Note: This location stores the number of counts of the internal clock per revolution.
2Ah
IN0 High Limit
2Bh
IN0 Low Limit
2Ch
IN1 High Limit
2Dh
IN1 Low Limit
2Eh
IN2 High Limit
2Fh
IN2 Low Limit
30h
IN3 High Limit
31h
IN3 Low Limit
32h
IN4 High Limit
33h
IN4 Low Limit
34h
IN5 High Limit
35h
IN5 Low Limit
36h
IN6 High Limit
37h
IN6 Low Limit
38h
Hot Temperature Limit (High)
39h
Hot Temperature Hysteresis Limit (Low)
3Ah
OS Temperature Limit (High)
3Bh
OS Temperature Hysteresis Limit (Low)
3Ch
FAN1 Fan Count Limit
Note: It is the number of counts of the internal clock for the Low Limit of the fan speed.
3Dh
FAN2 Fan Count Limit
Note: It is the number of counts of the internal clock for the Low Limit of the fan speed.
3Eh-3Fh
Reserved
Note: Setting all ones to the high limits for voltages and fans (0111 1111 binary for temperature) means interrupts will never be generated except the case when volt-
ages go below the low limits.
For voltage input high limits, the device is doing a greater than comparison. For low limits, however, it is doing a less than or equal to comparison.
www.national.com
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