ATTM01 Datasheet, PDF (1/18 Pages) Analog Microelectronics – Processor Thermal Monitor

AME, Inc.
ATTM01/ATTM02
Processor Thermal Monitor
1. General Description
The ATTM01/ATTM02 are precision remote diode tem-
perature sensors with a 2-wire System Management Bus
(SMBus) serial interface. The ATTM01/ATTM02 measure:
(1) Local temperature and (2) the temperature of a remote
diode based transistor from Computer Processor Unit
(CPU), Graphic Processor Unit (GPU) or other ASICs.
The ATTM01/ATTM02 provide two system alarms:
ALERT# and OVERT#.
(1) ALERT# event occurs when any temperature goes
outside the value that setup by preprogrammed HIGH and
LOW temperature limit registers.
(2) OVERT# event occurs when any temperature ex-
ceeds the OVERT# programmed limit.
ATTM02 has a different SMBus address to the ATTM01.
The SMBus address of the ATTM01 is 0x90 and ATTM02
is 0x94.
2. Features
l Remote and Local Temperature Sensing.
l 1 Accuracy.
l Programmable HIGH/LOW Alarm Temperature
Thresholds.
l ALERT# Output Supports SMBus Protocol.
l OVERT# Output Useful for System Shutdown.
l SMBus-compatible interface.
l SMBus timeout support.
l Packages: SOP-8 and MSOP-8
3. Pin Configuration/ Top Side Mark
VDD
1
D+
2
D-
3
OVERT#
4
8
SMBCLK
7
SMBDATA
6
ALERT#
5
GND
Figure1. ATTM01/ATTM02 Pin Diagram (Top View)
Rev. B.01
1