MAX6964EVKIT Maxim Integrated, MAX6964EVKIT Datasheet - Page 3

• Manufacturer Part Number: MAX6964EVKIT
• Description: LED Lighting Development Tools Evaluation Kit for the MAX6964
• Manufacturer: Maxim Integrated
• Series: MAX6964r

Specifications of MAX6964EVKIT

• Product: Evaluation Kits

10 Set both CMAXQUSB interface board SW1 switches
11) Turn on the 5V power supply. The CMAXQUSB
12) Connect the included USB cable from the PC to the
13) Follow the directions of the Add New Hardware
14) Start the MAX6964 program by opening its icon in
15) The software detects the CMAXQUSB interface
See the Detailed Software Description section in
this document for more information on the software
GUI features.
The MAX6964 EV kit demonstrates the MAX6964 17-out-
put LED driver/GPO controller’s features. The EV kit’s cir-
cuit uses a MAX6964 IC in a 24-pin QSOP package on a
proven PCB layout design. The EV kit features four RGB
LEDs, five white LEDs, a relay interface (JU7) and a con-
figurable BLINK oscillator. The LEDs can be controlled
independently and their intensity varied using the appro-
priate MAX6964 8-bit PWM control register. The
MAX6964 IC’s two-phase feature and unique single-pin,
one-of-four 2-wire address feature can also be evaluated
with the EV kit. The MAX6964 IC requires 3.3V for opera-
tion and is powered by the EV kit circuit’s V+ rail.
The MAX6964 IC’s blink feature is demonstrated by
using a configurable oscillator circuit. The oscillator
circuit comprises two logic inverters (U2 and U3), a
to the ON position. These components provide pullup
resistors for the SDA and SCL 2-wire bus signals.
interface board is powered through the computer’s
USB port.
CMAXQUSB interface board. A Building Driver
Database window pops up in addition to a New
Hardware Found message. If you do not see any
window that is similar to the one described above
after 30 seconds, remove the USB cable from the
CMAXQUSB interface board and reconnect it again.
Administrator privileges are required to install the
USB device driver on Windows 2000/XP.
Wizard to install the USB device driver. Choose
the Search for the best driver for your device
option. Specify the location of the device driver as
C:\Program Files\MAX6964 by using the Browse
button. Refer to the TROUBLESHOOTING USB.PDF
document included with the software for more
information.
the Start|Programs menu.
board and the MAX6964 IC 2-wire address, then
updates the screen. The EV kit and software are
then ready for further evaluation.
Detailed Hardware Description
MAX6964 Evaluation Kit/Evaluation System
_______________________________________________________________________________________
Table 1. V+ Source (3.3V), JU1 Configuration
capacitor (C5), and resistors (R18, R19, and R20). By
configuring jumpers JU4 and JU5, 0.7Hz to 3.0Hz
BLINK frequencies can be evaluated. PCB pads are
also provided for connecting an external square- wave
oscillator to the BLINK_IN pads. Jumper JU6 can be
used to disable and power down both inverters, U2 and
U3, hence disabling the oscillator.
The EV kit circuit can also be reconfigured for evaluat-
ing a 5V-rated relay by using jumper JU7 pads. White
LED D5 and resistor R5 must be removed and a short
placed across resistor R5 pads. The MAX6964 can sink
up to 50mA on the output.
The MAX6964 EV kit provides SCL and SDA PCB pads
for the 2-wire serial-interface signals. These pads can
be connected directly to a user-provided 2-wire system
that has pullup resistors for the SCL and SDA signals.
Alternatively, the EV kit can be used with a CMAXQUSB
interface board for communicating with a PC through
the 2-wire serial interface. Jumper JU2 is used to confi-
gure the MAX6964 IC’s 2-wire address and demonstrates
the IC’s unique single-pin, one-of-four 2-wire address fea-
ture using the SCL or SDA signals for addressing. A PCB
pad is also provided for the MAX6964 IC pin, AD0. See
Table 2 for additional information.
Several jumper selections and a reset switch function
provided by the MAX6964 EV kit are presented in the
following tables.
The MAX6964 EV kit features a jumper, JU1, to select the
source for the V+ rails of the EV kit circuit. The circuit’s
V+ rail is typically supplied 3.3V by a CMAXQUSB inter-
face board. Alternatively, the EV kit’s VIN PCB pad can
be used to supply 3.3V to the circuit’s V+ rail. The
CMAXQUSB interface board is powered through a PC’s
USB cable. Table 1 lists the various jumper options for
powering the circuit’s V+ rail.
*This configuration also allows the user to use an external sup-
ply for the VDD source to power the V+ pin of the MAX6964 IC.
POSITION
SHUNT
1-2
2-3
Connected to VIN
PCB pad
Connected to VDD
PCB pad
Jumper and Switch Functions
V+ PIN
EV Kit Circuit V+ Source
VIN PCB pad
CMAXQUSB interface
board or external supply*
SUPPLY SOURCE
EV KIT 3.3V
3