Microchip MIC284 Handleiding

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February 20021MIC284 Evaluation Board

MIC284 Evaluation Board

DemoWare™ Software

General Description

The Micrel MIC284 Evaluation Board and DemoWare Soft-

ware demonstrate the operation and features of the MIC284

Two-Zone Thermal Supervisor. The MIC284 is a versatile

digital thermal supervisor capable of measuring temperature

using its internal sensor and an inexpensive external sensor

or embedded silicon diode such as those found in higher

performance CPUs and FPGAs. This manual describes how

to use the evaluation board and the companion software.

Getting Started

What is Included

Review the packing list in Table 1 to conrm that you received

all listed items. If any of the items are missing or damaged,

contact Micrel Semiconductor. The latest version of all Micrel

data sheets may be obtained from our website at

www.micrel.com.

Item QtyDescription

11MIC284 Evaluation Board with

Jumpers Installed

21MIC284 Evaluation Board and

DemoWare Software Manual

(this document)

31MIC284 Data Sheet

42MIC284BM Samples

Table 1.Packing List

What You Must Provide

If the board is to be used with the MIC284 DemoWare, no

additional items are required except for a suitable host PC. All

power for the board will be drawn from the PC parallel port.

The board may be plugged directly into the DB25 connector

on the host PC. It may be more convenient, however, to use

a cable between the PC and the board. A standard, straight-

through, DB25 male-to-female parallel printer cable may be

used. If a non-PC host is used, the following items are

required for use with the MIC284 evaluation board:

Micrel, Inc. 1849 Fortune Drive San Jose, CA 95131 USA tel + 1 (408) 944-0800 fax + 1 (408) 944-0970 http://www.micrel.com••• •••

DemoWare is a trademark of Micrel, Inc.

SMBus is a trademark of Intel Corporation.

I2C is a trademark of Philips Electronics N.V.

ACCESS.bus is a trademark of the ACCESS.bus Industry Group.

IPort is a trademark of Microcomputer Control Corporation.

•3.3V, 100mA regulated power supply

•Power supply leads or cables

• SMBus™/I2C™ compatible serial bus host for communi-

cation with the MIC284

•Cable for serial host connection, as appropriate

In either case, the following additional items are useful, but

not required:

•Logic probe(s)

• Voltmeter(s)

• SMBus/I2C bus analyzer

•Component cooling spray

•Heat gun

General Description of the Evaluation Board

This board demonstrates use of the MIC284 Two-Zone

Thermal Supervisor. It is designed to support rapid prototyping

of circuits employing the MIC284. A MMBT3906 transistor

(surface mount equivalent to 2N3906) is included on the

board in order to demonstrate the MIC284’s ability to mea-

sure the temperature of a remote PN junction. A connector

permits use of an external remote diode or transistor in place

of the on-board remote transistor. User congurable jumpers

select the MIC284’s slave address and congure the remote

sensor connections. Two LEDs on the board report the status

of the MIC284’s interrupt request output and critical output

when enabled.

For use with Micrel’s DemoWare demonstration software, the

MIC284 evaluation board may be connected directly to a PC

parallel port via a DB25M connector. As an option, the user

may install a 4-pin ACCESS.bus™-type connector to inter-

face the evaluation board with a serial bus host such as the

IPort™ I2C Host Adapter from MCC Corporation. An addi-

tional general-purpose 8-pin header can also be used to

interface any I2C/SMBus host to the board.

Product specificaties