MAX194 Evaluation System/Evaluation Kit

2

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___MAX194 EV System Quick Start

This section applies only to the use of the MAX194 EV

kit with the 68HC16 module.

1) Copy the files from the distribution disk to your hard

disk. Store the MAX194 EV kit software in its own

directory.

2) Carefully align the 40-pin header of the MAX194 EV

kit with the 40-pin connector of the µC module.

Gently press them together. The two boards should

be flush against each other. Note: The MAX194 EV

kit is not supported by the 80C32 module.

3) Make sure the jumpers are configured in accor-

dance with Table 1.

4) Connect a 9V to 15V DC power source to the µC

module, using a small screwdriver. The terminal

block is located next to the on/off switch, in the

upper right corner of the µC module. Plus and

minus are marked on the board.

5) Connect a cable from the computer’s serial port to

the µC module. If using a 9-pin serial port, use a

straight-through 9-pin female-to-male cable. If the

available serial port uses a 25-pin connector, use a

standard 25-pin to 9-pin adapter.

6) To start up the MAX194 software on the IBM PC, set

the current directory to match the directory where

the Maxim software is stored, and then type the pro-

gram name “MAX194”.

7) The program will ask which serial port is connected

to the µC module. Press the space bar until the cor-

rect port is highlighted, then press ENTER. The

MAX194 program will switch to terminal-emulation

mode.

8) At this point, apply power to the 68HC16 module.

The LED should light, and within 5 seconds the pro-

gram will display a logon banner. Note that the LED

is a status indicator, not a power light. It flashes to

indicate module readiness.

9) To download and run the RAM resident code on the

µC module, press ALT+L (that is, hold down the

ALT key as you strike the L key). The program

prompts for the file name. Press the ENTER key to

download and run the file KIT194.S19 on the

68HC16 module.

The KIT194.S19 RAM resident program offers a menu

of commands listed in Table 2.

To evaluate the MAX195, replace U1 with the MAX195.

Table 1. Jumper Configuration when Used

with 68HC16 Module

Table 2. List of Commands Available in

KIT194.S19

JUMPER

STATE

FUNCTION

JU1

Closed

Ground the SCLK pin

JU3

QSPI

Conversion clock comes from QSPI clock

JU4

QSPI

Chip-select is driven by QSPI PCS0

JU5

QSPI

Conversion start is driven by QSPI PCS0

JU6

Open

Open = Normal Operation.

Closed = Reset; do not close this jumper

when using the µC module, because the

µC drives the reset pin.

JU7

68HC16 module selects bipolar/

unipolar/shutdown modes

AUTO

COMMAND

FUNCTION

?

List available commands.

R

Read the MAX194.

—

Perform continuous conversions.

O

Oscilloscope demonstration—observe system

timing relationships by operating the MAX194

at full speed without processing data.

!

Reset the MAX194.

B

Select bipolar mode.

U

Select unipolar mode.

H

Select hexadecimal output.

D

Select decimal output.

L

Toggle low-power mode on/off.

T

Set power-up delay and sleep time.

S

Collect a fixed number of samples.

________EV System Component List

QUANTITY

DESCRIPTION

1

MAX194 Evaluation Kit (MAX194EVKIT-DIP)

1

68HC16 C Module (68HC16MODULE)