LM87CIMTX National Semiconductor, LM87CIMTX Datasheet - Page 11

• 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

Internal Temp. Hardware
High Limit
External Temp. Hardware
High Limit
Test Register
Channel Mode Register
Internal Temp. Hardware
High Limit
External Temp. Hardware
High Limit
Value RAM DAC Data
Register
Value RAM
Company ID
Revision
Configuration Register 1
Interrupt Status Register 1
Interrupt Status Register 2
Interrupt Mask Register 1
Interrupt Mask Register 2
CI Clear Register
VID0-3/Fan Divisor Register
VID4 Register
Configuration Register 2
Interrupt Status Register 1
Mirror
Interrupt Status Register 2
Mirror
SMBALERT# Enable
Functional Description
2.1 Internal Registers of the LM87
Register
TABLE 1. The internal registers and their corresponding internal LM87 addresses are as follows:
LM87 Internal Hex
Address
1Ah-3Fh
3Eh
4Ah
4Ch
4Dh
13h
14h
15h
16h
17h
18h
19h
3Fh
40h
41h
42h
43h
44h
46h
47h
49h
80h
(Continued)
0101 XXXX
1000 000X
0100 0110
0101 0101
0000 0000
0000 0000
0100 0110
0101 0101
0000 0010
0000 0110
0000 1000
0000 0000
0000 0000
0000 0000
0000 0000
0000 0000
0000 0000
0000 0000
0000 0000
0010 0000
Power on
1111 1111
Value
11
70 ˚C Default - User adjustable. Lockable by setting bit
1 of register 4Ah.
85 ˚C Default - User adjustable. Lockable by setting bit
2 of register 4Ah.
70 ˚C Default - User adjustable.
85 ˚C Default - User adjustable.
Defaults to full scale DAC setting.
(See Section 13.18) Contains: monitoring results
(temperature, voltages, fan counts), WATCHDOG
limits, and Company/Stepping IDs
This designates the National Semiconductor LM87.
Revisions of this device will start with 1 and increment
by one.
The upper four bits set the divisor for Fan Counters 1
and 2. The lower four bits reflect the state of the
VID0-VID3 inputs.
The lower bit reflects the state of VID4 input.
Notes
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