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ADM1025A Datasheet(PDF) 20 Page - ON Semiconductor

Part No. ADM1025A
Description  Low Cost PC Hardware Monitor ASIC
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Maker  ONSEMI [ON Semiconductor]
Homepage  http://www.onsemi.com
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ADM1025A Datasheet(HTML) 20 Page - ON Semiconductor

 
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ADM1025/ADM1025A
Preliminary Technical Data
Rev. P5 | Page 20 of 21| www.onsemi.com
Table 15. Registers 15h–3Dh – Value and Limit Registers
Address
R/W
Description
15h
Read/Write
Manufacturers Test Register
1Fh
Read/Write
Offset Register
20h
Read-Only
2.5 V Reading
21h
Read-Only
VCCP Reading
22h
Read-Only
3.3 V Reading
23h
Read-Only
5 V Reading
24h
Read-Only
12 V Reading
25h
Read-Only
VCC Reading
26h
Read-Only
Remote Diode Temperature
Reading
27h
Read-Only
Local Temperature Reading
2Bh
Read/Write
2.5 V High Limit
2Ch
Read/Write
2.5 V Low Limit
2Dh
Read/Write
VCCP High Limit
2Eh
Read/Write
VCCP Low Limit
2Fh
Read/Write
3.3 V High Limit
30h
Read/Write
3.3 V Low Limit
31h
Read/Write
5 V High Limit
32h
Read/Write
5 V Low Limit
33h
Read/Write
12 V High Limit
34h
Read/Write
12 V Low Limit
35h
Read/Write
VCC High Limit
36h
Read/Write
VCC Low Limit
37h
Read/Write
Remote Temperature High Limit
38h
Read/Write
Remote Temperature Low Limit
39h
Read/Write
Local Temperature High Limit
3Ah
Read/Write
Local Temperature Low Limit
For the high limits of the voltages, the device is doing a greater-than
comparison. For the low limits, however, it is doing a less-than or equal
comparison.
Table 16. Register 15h – Manufacturers Test Register
Bit
Name
R/W
Description
0
Read/Write
Used to select RSTor INT
functions. Refer to RST/INT
Output section.
1
Read/Write
Used to select RST or INT
functions. Refer to RST/INT
Output section.
2–7
Reserved
Read/Write
Reserved. Only values written
to these bits should be zeros.
Table 17. Register 3Eh – Company ID
Value
(Bits
7:0)
R/W
Description
0100
0001
Read-
Only
This location contains the company
identification number that may be used by
software to determine the manufacturer’s
device. This register is read-only.
Table 18. Register 3Fh – Stepping
Value (Bits 7:0)
R/W
Description
0010 [Version]
Read-Only
Stepping ID Number and
Version
Table 19. NAND Tree Test Vectors
Vector
No.
SDA
SCL
VID0
VID1
VID2
VID3
ADD/RST/
INT/NTO
1
0
0
0
0
0
0
1
2
0
0
0
0
0
1
0
3
0
0
0
0
1
1
1
4
0
0
0
1
1
1
0
5
0
0
1
1
1
1
1
6
0
1
1
1
1
1
0
7
1
1
1
1
1
1
1


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