MAX6974EVKIT データシートの表示（PDF） - Maxim Integrated
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MAX6974EVKIT Datasheet PDF : 16 Pages
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MAX6974 Evaluation Kit
DESIGNATION QTY
DESCRIPTION
U6
1
RS-232 transceiver
Maxim MAX3311EUB+ (10-pin µMAX®)
U7, U8
2
LDO linear regulators
Maxim MAX1658ESA+ (8-pin SO)
U9
1
LDO linear regulator
Maxim MAX1659ESA+ (8-pin SO)
µMAX is a registered trademark of Maxim Integrated Products, Inc.
Component List (continued)
DESIGNATION QTY
DESCRIPTION
Y1
1
20MHz crystal
Citizen HCM49-20.000MABJ-UT
Y2
1
32MHz oscillator
ECS ECS-3953M-320-B-TR
—
1 PCB: MAX6974 evaluation kit+
—
20 Shunts
Component Suppliers
SUPPLIER
TDK Corp.
Zetex USA
PHONE
847-803-6100
631-543-7100
FAX
847-390-4405
631-864-7630
WEBSITE
www.component.tdk.com
www.zetex.com
Note: Indicate that you are using the MAX6974 when contacting these component suppliers.
Quick Start
Required Equipment
Before you begin, you need the following equipment:
• Maxim MAX6974EVKIT
• DC power supply, 5VDC at 1A
• Windows 98/2000/XP-compatible computer with a
serial (COM) port
• 9-pin I/O extension cable
Procedure
Do not turn on the power until all connections
are complete.
1) Ensure that all jumpers JU1–JU20 are in 1-2 posi-
tion (see Table 5).
2) Connect a 5VDC power source (7VDC maximum) to
the board at the VLED and GND terminals.
3) Connect a cable from the computer’s serial port to
the EV kit. If using a 9-pin serial port, use a straight-
through, 9-pin female-to-male cable. If the only
available serial port uses a 25-pin connector, a
standard 25-pin-to-9-pin adapter is required.
4) Install the evaluation software on your computer by
launching MAX6974.msi. (The latest software can
be found on Maxim’s website www.maxim-ic.com.)
The program files are copied and icons are created
for them in the Windows Start menu.
5) Turn on the power supply. None of the LEDs light
up at this time.
6) Start the MAX6974 program by opening its icon in
the Start menu.
7) In the Select Maxim MAX6974 Evaluation Kit
Software Mode window, select Connect to EVKit on
port (Autodetect). Click OK. See Figure 1. Verify that
the blue M test pattern appears (test_0_blue_M.clr).
8) From the File menu, select Load Test Patterns...
and then pick the file test_01_all_white.clr. Verify
that all 32 RGB LEDs light up in white.
9) In the LED0 color grid, double-click one of the
large round color dots in the 4 x 8 grid (or select
one of the dots and click OK). The standard color
selector dialog box appears. Select a color and
click OK. Click Upload All to write the 4 x 8 color
grid data to the board. Verify that the LEDs light up
in colors corresponding to the software color grid
settings.
10) Set Global Intensity to 5/63 and click Upload All.
Verify that the LEDs are brighter.
Detailed Description of Software
The MAX6974 EV kit software controls one or more
MAX6974 EV kit boards, each of which has two
MAX6974s driving a 4 x 8 grid of LEDs.
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