19-2147; Rev 0; 8/01
MAX6902 Evaluation System/Evaluation Kit
General Description
Features
The MAX6902 evaluation system (EV system) consists
of a MAX6902 evaluation kit (EV kit) and a companion
Maxim SMBus™ interface board.
o Proven PC Board Layout
o Low-Voltage Operation
o Supply Current Monitoring
o Fully Assembled and Tested
o Easy-to-Use Menu-Driven Software
The MAX6902 EV kit is an assembled and tested PC
board that demonstrates the MAX6902 SPI™ bus real-
time clock (RTC). This EV kit is intended to demonstrate
the functionality and features of the MAX6902 RTC. It is
not designed to exercise the MAX6902 at its maximum
SPI bus interface speed. A typical bus interface speed
is in the 90kHz range and depends upon the operating
system and computer used.
o Includes: Windows 95/98-Compatible Software
(3.5in Floppy Disk) and Demo PC Board
The Maxim SMBus interface board (MAXSMbus) allows
an IBM-compatible PC to use its parallel port to emulate
the SPI, 3-wire, and SMBus (2-wire) interfaces.
Windows 95/98®-compatible software provides a user-
friendly interface to exercise the features of the
MAX6902. (Note: Windows NT/2000 requires additional
driver software; contact factory.) The program is menu
driven and offers a graphic interface with control but-
tons and status display.
Ordering Information
PART
TEMP. RANGE
0°C to +70°C
0°C to +70°C
INTERFACE TYPE
User supplied
MAXSMBus
MAX6902EVKIT
MAX6902EVSYS
Note: The MAX6902 EV kit software is provided with the
MAX6902EVKIT. However, to use the software, the MAXSMbus
board is required to interface the EV kit to the computer.
Order the complete EV system (MAX6902EVSYS) for
comprehensive evaluation of the MAX6902 using a PC.
Order the EV kit (MAX6902EVKIT) if the MAXSMbus
module has already been purchased with a previous
Maxim EV system, or for custom use in other µC-based
systems.
MAX6902EVKIT Component List
DESIGNATION
QTY
DESCRIPTION
470kΩ 5% resistor
DESIGNATION QTY
DESCRIPTION
0.1µF, 16V X7R ceramic
capacitors (0603)
Taiyo Yuden EMK107BJ104KA or
Murata GRM39X7R104K016 or
TDK C1608X7R1C104K
R2
U1
1
1
MAX6902EKA (8-pin SOT23) RTC
C1, C2, C3, C6
4
MAX1840EUB (10-pin µMAX) level
translator
U2
U3
U4
1
1
1
MAX3370EXK (SC70) level
translator
10µF, 35V capacitors
Al Electrolytic
C4, C5
J1
2
1
MAX1615EUK (5-pin SOT23) linear
voltage regulator
2 ✕ 10 right-angle female
receptacle
32.768kHz quartz crystal, 12.5pF,
20ppm
ECS, Inc. ECS-3X8
FOX Electronics NC38
Vishay Dale XT38T
JU1, JU2
JU3–JU7
R1
2
0
1
2-pin headers
Not installed
Y1
Y2
1
0
49.9kΩ 1% resistor
Not installed
SMBus is a trademark of Intel Corp.
SPI is a trademark of Motorola, Inc.
Windows is a registered trademark of Microsoft Corp.
________________________________________________________________ Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.