19-2708; Rev 0; 12/02
MAX6955 Evaluation Kit
General Description
Features
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’s parallel (printer) port to provide the 2-wire
ꢀ Proven PC Board Layout
ꢀ Windows 95/98/ME/NT/2000/XP-Compatible
Evaluation Software
ꢀ 2-Wire Serial Interface
ꢀ Sixteen 14-Segment Bright LEDs
ꢀ Fully Assembled and Tested
®
interface. The Windows 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’s 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’s 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–JU4 allow the user to
manually modify the device address of U1 or U2.
Ordering Information
PART
TEMP RANGE
IC PACKAGE
MAꢂꢁ9XXE3KIT
ꢀ°C to +ꢅꢀ°C
.ꢁ SSꢄP
MAX6955 EV Kit Files
PROGRAM
INSTALL6EꢂE
MAꢂꢁ9XX6EꢂE
DESCRIPTION
Instrlls thc E3 kmt softwrec
Applmꢃrtmon peogera
HELPFILE6HTM MAꢂꢁ9XX E3 kmt Hclpfmlc
Order the MAX6955EVKIT for comprehensive evalua-
tion of the MAX6955 using a PC with an available paral-
lel port.
Pꢄ5T9XNT6EꢂE SST's feccwrec DLPoetIꢄ demvce prꢃkrgc
UNINST6INI
Unmnstrlls thc E3 kmt softwrec
Component List
DESIGNATION QTY
DESCRIPTION
DESIGNATION QTY
DESCRIPTION
J1
1
2
4
Mrlc DB-2X emght-rnglc plug
2ꢀ-pmn durl-eow 2 x 1ꢀ hcrdces
X-pmn hcrdces
22µF 2ꢀ0% ꢁ6.3 ꢂX5 ꢃceramꢃ
ꢃrprꢃmtoe (121ꢀ)
TDK C.22XꢂX5ꢀJ22ꢁM
C1
1
1
2
2
J2% J.
JU1–JU4
12pF X0% Xꢀ3 CꢄO ꢃceramꢃ
ꢃrprꢃmtoe (ꢀꢁꢀ.)
TDK C1ꢁꢀ8CꢄO1H12ꢀJT
N-ꢃhrnncl MꢄSFETs (.-pmn SꢄT2.)%
top arek: ꢅꢀ2
Ccnterl Scamꢃonduꢃtoe 2Nꢅꢀꢀ2
C2
N1% N2
Q1% Q2
2
2
Bmpolre junꢃtmon ternsmstoes (.-pmn
SꢄT2.)% top arek: C1A
ꢀ61µF 1ꢀ0% 2X3 ꢂꢅ5 ꢃceramꢃ
ꢃrprꢃmtoes (ꢀꢁꢀ.)
C.% CX
C4% Cꢁ
Ccnterl Scamꢃonduꢃtoe CMPT.9ꢀ4
TDK C1ꢁꢀ8ꢂꢅ51E1ꢀ4KT
51% 5X
52% 5ꢁ
2
2
1ꢀꢀkΩ X0 ecsmstoes (12ꢀꢁ)
1.kΩ X0 ecsmstoes (12ꢀꢁ)
1µF 2ꢀ0% 1ꢀ3 ꢂX5 ꢃceramꢃ
ꢃrprꢃmtoes (ꢀ8ꢀX)
TDK C2ꢀ12ꢂX51A1ꢀXM
5.% 54%
5ꢅ–51ꢀ%
51.–522
1ꢁ 4ꢅkΩ X0 ecsmstoes (12ꢀꢁ)
ꢀ6X4mn durl 14-scgacnt
rlphrnuacemꢃ LEDs
Luacx LDD-FX4ꢀꢁ5I
Frmeꢃhmld MDAꢁ14ꢀC
D1–D8
8
4
511% 512
U1% U2
Nonc
2
2
4
1ꢀꢀkΩ 10 ecsmstoes (12ꢀꢁ)
MAꢂꢁ9XXAAꢂ (.ꢁ-pmn SSꢄP)
Shunts
Zcnce dmodcs% 3z = X613 (.-pmn
SꢄT2.)% top arek: KZ2 oe Z2
Dmodcs Inꢃ6 BZꢂ84CX31
D9–D12
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.