Datasheet
RoHS Compliance Information
| Size in Kbytes | Date |
 |
| LM78 Microprocessor System Hardware Monitor |
424 Kbytes |
26-Feb-01 |
Download |
LM78 Microprocessor System Hardware Monitor (Japanese)
 |
505 Kbytes |
|
 |
| Obsolete Part | Alternate Part or
Supplier | Source | Last Time Buy Date |
LM78CCVF
| NONE
| NONE
| 06 Mar 2001
|
LM78CCVFX
| NONE
| NONE
| 06 Mar 2001
|
LM78L05ACH
| NONE
| NONE
| 08 Sep 1999
|
LM78L05IBP
| A78LXX
| NATIONAL SEMICONDUCTOR
| 16 Nov 2008
|
LM78L05IBPX
| NONE
| NATIONAL SEMICONDUCTOR
| 24 Jul 2009
|
LM78L09ACZ
| LM317LZ
| NATIONAL SEMICONDUCTOR
| 01 Dec 2009
|
LM78L09ITP
| NONE
| NATIONAL SEMICONDUCTOR
| 16 Nov 2008
|
LM78L12AC MWC
| NONE
| NATIONAL SEMICONDUCTOR
| 03 Dec 2008
|
LM78L12ACH
| NONE
| NONE
| 08 Sep 1999
|
LM78L15AC MDC
| NONE
| NATIONAL SEMICONDUCTOR
| 03 Dec 2008
|
LM78L15ACH
| NONE
| NONE
| 08 Sep 1999
|
LM78L82AC MDC
| NONE
| NATIONAL SEMICONDUCTOR
| 03 Dec 2008
|
LM78L82ACZ
| LM317LZ
| NATIONAL SEMICONDUCTOR
| 01 Dec 2009
|
LM78M05C MWC
| NONE
| NATIONAL SEMICONDUCTOR
| 03 Dec 2008
|
LM78M12CH
| LM140H-12/883
| NSCNE
| 03 Dec 2008
|
LM78M12CT
| LM317T
| NATIONAL SEMICONDUCTOR
| 01 Dec 2009
|
LM78M15CH
| LM140H-15/883
| NSCE
| 03 Dec 2008
|
LM78M15CT
| TA78MXX
| TOSHIBA
| 16 Nov 2008
|
LM78S40C MDA
| NONE
| NATIONAL SEMICONDUCTOR
| 03 Dec 2008
|
LM78S40J/883
| NONE
| NATIONAL SEMICONDUCTOR
| 01 Dec 2009
|
General Description
The LM78 is a highly integrated Data Acquisition system for hardware monitoring of servers, Personal Computers, or virtually any microprocessor based system. In a PC, the LM78 can be used to monitor power supply voltages, temperatures, and fan speeds. Actual values for these inputs can be read at any time, and programmable WATCHDOG limits in the LM78 activate a fully programmable and maskable interrupt system with two outputs.
The LM78 has an on-chip temperature sensor, 5 positive analog inputs, two inverting inputs (for monitoring negative voltages), and an 8-bit ADC. An input is provided for the overtemperature outputs of additional temperature sensors and this is linked to the interrupt system. The LM78 provides inputs for three fan tachometer outputs. Additional inputs are provided for Chassis Intrusion detection circuits, VID monitor inputs, and chainable interrupt. The LM78 provides both ISA and Serial Bus interfaces. A 32-byte auto-increment RAM is provided for POST (Power On Self Test) code storage.
Design Tools
| Title | Size in Kbytes |
Date |
 |
|
|
| LMxx - Windows 95/98 VXD drivers with stand alone application for talking to temperature sensors or hardware monitors on a mother board |
1366 Kbytes |
28-Jul-2003 |
View |
Download |
|
More Application Notes
| Title | Size in Kbytes |
Date |
 |
| AN-1155: Application Note 1155 A Simple Software I2C Routine for the COP8 |
82 Kbytes |
15-May-04 |
Download |
| AN-1256: Application Note 1256 Tiny Temperature Sensors for Portable Systems |
66 Kbytes |
1-Oct-02 |
Download |
[Information as of 8-Nov-2009]
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