19-2708; Rev 0; 12/02
MAX6955 Evaluation Kit
General Description
The MAX6955 evaluation kit (EV kit) is designed to eval-
uate the MAX6955 light-emitting diode (LED) display dri-
ver with a 2-wire interface. The EV kit board contains two
MAX6955 LED display drivers on symmetrical sides of
the board, allowing a 16-digit display using sixteen 14-
segment alphanumeric LEDs. The DB-25 connector
allows a PC鈥檚 parallel (printer) port to provide the 2-wire
interface. The Windows
廬
software provides a friendly
graphical user interface (GUI) to exercise the features of
the MAX6955 by allowing on-the-fly text and numeric
entry and access to all relevant registers. The software
includes multiple tabs for accessing the various regis-
ters and maintains a consistent format with controls on
the left side of the software鈥檚 main window pertaining to
U1, located on the left side of the EV kit board. Similarly,
all the controls on the right side of the software鈥檚 main
window pertain to U2, located on the right side of the EV
kit board. The EV kit board requires a 3.3VDC or 5VDC
power supply and jumpers JU1鈥揓U4 allow the user to
manually modify the device address of U1 or U2.
Order the MAX6955EVKIT for comprehensive evalua-
tion of the MAX6955 using a PC with an available paral-
lel port.
o
Proven PC Board Layout
o
Windows 95/98/ME/NT/2000/XP-Compatible
Evaluation Software
o
2-Wire Serial Interface
o
Sixteen 14-Segment Bright LEDs
o
Fully Assembled and Tested
Features
Evaluates: MAX6955
Ordering Information
PART
MAX6955EVKIT
TEMP RANGE
0擄C to +70擄C
IC PACKAGE
36 SSOP
MAX6955 EV Kit Files
PROGRAM
INSTALL.EXE
MAX6955.EXE
HELPFILE.HTM
PORT95NT.EXE
UNINST.INI
DESCRIPTION
Installs the EV kit software
Application program
MAX6955 EV kit Helpfile
SST's freeware DLPortIO driver package
Uninstalls the EV kit software
Component List
DESIGNATION QTY
C1
1
DESCRIPTION
22碌F 鹵20%, 6.3V X5R ceramic
capacitor (1210)
TDK C3225X5R0J226M
12pF 鹵5%, 50V COG ceramic
capacitor (0603)
TDK C1608COG1H120JT
0.1碌F 鹵10%, 25V X7R ceramic
capacitors (0603)
TDK C1608X7R1E104KT
1碌F 鹵20%, 10V X5R ceramic
capacitors (0805)
TDK C2012X5R1A105M
0.54in dual 14-segment
alphanumeric LEDs
Lumex LDD-F5406RI
Fairchild MDA6140C
Zener diodes, Vz = 5.1V (3-pin
SOT23), top mark: KZ2 or Z2
Diodes Inc. BZX84C5V1
DESIGNATION QTY
J1
J2, J3
JU1鈥揓U4
N1, N2
1
2
4
2
DESCRIPTION
Male DB-25 right-angle plug
20-pin dual-row 2 x 10 headers
5-pin headers
N-channel MOSFETs (3-pin SOT23),
top mark: 702
Central Semiconductor 2N7002
Bipolar junction transistors (3-pin
SOT23), top mark: C1A
Central Semiconductor CMPT3904
100k鈩?鹵5% resistors (1206)
13k鈩?鹵5% resistors (1206)
47k鈩?鹵5% resistors (1206)
100k鈩?/div>
鹵1%
resistors (1206)
MAX6955AAX (36-pin SSOP)
Shunts
C2
1
C3, C5
2
Q1, Q2
R1, R5
R2, R6
R3, R4,
R7鈥揜10,
R13鈥揜22
R11, R12
U1, U2
None
2
2
2
16
2
2
4
C4, C6
2
D1鈥揇8
8
D9鈥揇12
4
Windows is a registered trademark of Microsoft Corp.
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________________________________________________________________
Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim鈥檚 website at www.maxim-ic.com.
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