General Description

col conversion. The PECI-compliant host reads

temperature data directly from up to four PECI-enabled

CPUs. Interrupts are generated when the measured

temperature exceeds the high-temperature limit and

causes ALERT to assert. The RESET input allows the

tion error.

munication channel to communicate synchronously with

peripheral devices in a multiple master or multiple slave

system. This interface allows a maximum serial-data

rate of 400kbps.

The MAX6621 is designed to operate from a +3.0V to

+3.6V supply voltage and ambient temperature range

of -20°C to +120°C.

Applications

Servers

Workstations

Desktop Computers

Features

♦ +3V to +3.6V Supply Voltage

♦ PECI-Compliant Port

♦ ALERT Output

♦ RESET Input (May Be Disabled as a Factory

Option)

♦ Programmable Temperature Offsets

♦ -20°C to +120°C Operating Temperature Range

Supply Voltage

Ordering Information

T = Tape and reel.

+

Denotes a lead(Pb)-free/RoHS-compliant package.

PART

TEMP RANGE

PIN-PACKAGE

MAX6621AUB+

-20°C to +120°C

10 μMAX

MAX6621AUB+T

-20°C to +120°C

10 μMAX

19-0729; Rev 2; 12/09

________________________________________________________________

Maxim Integrated Products

1

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

MASTER

SDA

SCL

SDA

SCL

PECI

+3.3V

GND

CPU

INTERNAL

TEMP

SENSOR

AD0

ALERT

RESET

MAX6621

Typical Application Circuit

Pin Configuration appears at end of data sheet.

SMBus is a trademark of Intel Corp.

μMAX is a registered trademark of Maxim Integrated Products, Inc.