Evaluates: MAX7360
MAX7360 Evaluation Kit
General Description
The MAX7360 evaluation kit (EV kit) provides a proven
design to evaluate the MAX7360 I2C-interfaced low-
EMI key-switch controller and 8 LED drivers/GPIO with
integrated ESD protection. The EV kit also includes
Windows® 2000-, Windows XP®-, and Windows Vista®-
compatible software that provides a simple graphical
user interface (GUI) for exercising the features of the
MAX7360.
The MAX7360 EV kit PCB comes with a MAX7360EWX+
installed.
Features
S Wide 1.6V to 3.3V Supply Range
S 36-Bump WLP Package
S Windows 2000-, Windows XP-, and Windows Vista
(32-Bit)-Compatible Software
S USB-PC Connection (Cable Included)
S USB Powered
S Lead(Pb)-Free and RoHS Compliant
S Optional GPO Output LEDs (COL2–COL7)
S RGB LED Output (PORT1, PORT2, PORT3)
S White LEDs (PORT0) (Requires External VH
Supply)
S LED Output (PORT4)
S Rotary Encoder (PORT6, PORT7)
S I2C Interface Terminals
S Proven PCB Layout
S Fully Assembled and Tested
Component List
Ordering Information
+Denotes lead(Pb)-free and RoHS compliant.
Windows, WIndows XP, and Windows Vista are registered
trademarks of Microsoft Corp.
19-4694; Rev 0; 6/09
PART TYPE
MAX7360EVKIT+ EV Kit
DESIGNATION QTY DESCRIPTION
C1, C5–C9, C12,
C17, C18, C37 10
0.1FF Q10%, 16V X7R ceramic
capacitors (0603)
Murata GRM188R71C104K
C2 0 Not installed, ceramic capacitor
(0603)
C3, C13 0Not installed, ceramic capaci-
tors (1206)
C4 1
0.033FF Q10%, 25V X7R
ceramic capacitor (0603)
Murata GRM188R71E333K
C10, C39 2
1FF Q10%, 16V X5R ceramic
capacitors (0603)
TDK C1608X5R1C105K
C11, C38, C40 3
10FF Q20%, 16V X5R ceramic
capacitors (1206)
Murata GRM31CR61C106M
DESIGNATION QTY DESCRIPTION
C15, C16 2
10pF Q5%, 50V C0G ceramic
capacitors (0603)
TDK C1608C0G1H100J
C30, C31 2
22pF Q5%, 50V C0G ceramic
capacitors (0603)
TDK C1608C0G1H220J
H1, H2 220-pin headers
J1 1 USB type-B right-angle female
receptacle
J3 0 Not installed, dual-row (2 x 5)
10-pin header
JU1 1 Dual-row (2 x 4) 8-pin header
JU2, JU9,
JU15, JU16 43-pin headers
JU10–JU14,
JU24, JU25 0Not installed, headers—short
(PC trace)
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.
2 Maxim Integrated
Evaluates: MAX7360
MAX7360 Evaluation Kit
Component Suppliers
MAX7360 EV Kit Files
Component List (continued)
*EP = Exposed pad.
Note: Indicate that you are using the MAX7360 when contacting these component suppliers.
DESIGNATION QTY DESCRIPTION
JU3–JU8,
JU17–JU23 13 2-pin headers
KEY0–KEY63,
SW1 65 Momentary, normally open
switches
L1 1 Ferrite bead (0603)
TDK MMZ1608R301A
LED1,
LED6–LED15 11 Red LEDs (0805)
LED2, LED3,
LED4 3White LEDs (PLCC2)
LED5 1 RGB LED (PLCC4)
R1, R2 227I Q5% resistors (0603)
R3 1 1.5kI Q5% resistor (0603)
R4 1 470I Q5% resistor (0603)
R5, R18 22.2kI Q5% resistors (0603)
R6, R26–R29 510kI Q5% resistors (0603)
R7, R8 24.7kI Q5% resistors (0603)
R9, R25 233kI Q5% resistors (0603)
R10–R17, R24 9330I Q5% resistors (0603)
R19–R23 0 Not installed, resistors—short
(PC trace) (0402)
RE67 1 Rotary encoder
U1 1
I2C-interfaced low-EMI key-
switch controller (36 WLP)
Maxim MAX7360EWX+
DESIGNATION QTY DESCRIPTION
U2 1
2.5V regulator (5 SC70)
Maxim MAX8511EXK25+T
(Top Mark: ADV)
U3 1
3.3V regulator (5 SC70)
Maxim MAX8511EXK33+T
(Top Mark: AEI)
U4 1
Low-power microcontroller
(68 QFN-EP*)
Maxim MAXQ2000-RAX+
U5 1 UART-to-USB converter
(32 TQFP)
U6 1 93C46 type 3-wire EEPROM
16-bit architecture (8 SO)
Y2 1 16MHz crystal Hong Kong
X’tals SSM16000N1HK188F0-0
Y3 0 Not installed, crystal (CMR200T)
Y4 1 6MHz crystal Hong Kong X’tals
SSL60000N1HK188F0-0
— 18 Shunts
— 1 USB high-speed A-to-B cables,
6ft
— 1 PCB: MAX7360 EVALUATION KIT+
SUPPLIER PHONE WEBSITE
Hong Kong X’tals Ltd. 852-35112388 www.hongkongcrystal.com
Murata Electronics North America, Inc. 770-436-1300 www.murata-northamerica.com
TDK Corp. 847-803-6100 www.component.tdk.com
FILE DESCRIPTION
MAX7360.EXE Application program
FTD2XX.INF USB device driver file
USB_Driver_Help.PDF USB driver installation help file
3Maxim Integrated
Evaluates: MAX7360
MAX7360 Evaluation Kit
Quick Start
Required Equipment
U MAX7360 EV kit (USB cable included)
U User-supplied Windows 2000, Windows XP, or
Windows Vista PC with a spare USB port
U External 14V at 250mA DC power supply (required
only if driving white LEDs)
Note: In the following sections, software-related items
are identified by bolding. Text in bold refers to items
directly from the EV kit software. Text in bold and under-
lined refers to items from the Windows operating system.
Procedure
The MAX7360 EV kit is fully assembled and tested.
Follow the steps below to verify board operation:
1) Visit www.maximintegrated.com/evkitsoftware to
download the latest version of the EV kit software,
7360Rxx.ZIP. Save the EV kit software to a tempo-
rary folder and uncompress the ZIP file.
2) Install the EV kit software on your computer by run-
ning the INSTALL.EXE program inside the tempo-
rary folder. The program files are copied and icons
are created in the Windows Start | Programs menu.
3) Verify that all jumpers (JU1–JU25) are in their default
positions, as shown in Table 1.
4) Connect the USB cable from the PC to the EV kit
board. A New Hardware Found window pops up
when installing the USB driver for the first time.
If a window is not seen that is similar to the one
described above after 30s, remove the USB cable
from the board and reconnect it. Administrator privi-
leges are required to install the USB device driver
on Windows.
5) Follow the directions of the Add New Hardware
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 to be C:\
Program Files\MAX7360 (default installation direc-
tory) using the Browse button. During device driver
installation, Windows may show a warning message
indicating that the device driver Maxim uses does
not contain a digital signature. This is not an error
condition and it is safe to proceed with installa-
tion. Refer to the USB_Driver_Help.PDF document
included with the software for additional information.
6) Verify that the EV kit’s LED13 is lit, indicating that the
USB is connected and providing power.
7) Start the MAX7360 EV kit software by opening its
icon in the Start | Programs menu. The EV kit soft-
ware main window appears, as shown in Figure 1.
8) The software automatically connects to the board
after a few seconds.
9) Press the Initialize EV kit button to configure default
settings for demonstration.
10) Keyscan Demonstration: On the EV kit board, press
buttons in the KEY0–KEY63 matrix. Verify that the
keyscan codes are reported in the software’s history
window after five to six keypress events are queued,
depending on the debounce time and interrupt reg-
ister settings. The most recent scan code is identi-
fied in the Key Grid.
11) Rotary Encoder Demonstration: Select the soft-
ware’s Port Configuration tab (Figure 2), and then
turn the EV kit’s rotary encoder (RE67). Interrupt INTI
triggers the software to read the shaft encoder delta,
which is accumulated and reported by the software.
(Note: The mechanical detents on the shaft encoder
only approximate the actual encoding positions.)
12) Port Input Demonstration: On the EV kit, press and
hold SW1, then in the software’s Port Configuration
tab, under 0x49 GPIO Port Status, press the Read
button. Verify that Port5 is unchecked, indicating
that the PORT5 pin is logic-low (due to SW1 being
closed).
13) Release SW1, and interrupt pin INTI triggers the
software to read 0x49 GPIO Port Status again.
Port5 is now checked, indicating that the PORT5 pin
is now logic-high.
14) Move JU9 to the 2-3 position, powering the PORT0–
PORT4 LEDs from the USB. LED6 (PORT4) should
be dimly lit.
15) In the software’s PWM Intensity tab (Figure 3), set
0x54 Port P4 PWM Intensity to 100 and press the
Write button. LED6 should now be brightly lit.
16) In the software’s PWM Configuration tab (Figure
4), set 0x5C Port P4 Configuration to select Blink
Period of 010 512ms, and press the Write button.
After a moment, LED6 will blink on and off.
17) Port Output RGB Color LED Demonstration: Select
the software’s PWM Intensity tab and press the
Pick RGB Color (P1=Red,P2=Green,P3=Blue) but-
ton. The standard Windows color picker dialog box
appears. Select a color and press OK. The selected
RGB value is written to the PWM intensity registers
of PORT1, PORT2, and PORT3.
4 Maxim Integrated
Evaluates: MAX7360
MAX7360 Evaluation Kit
18) Port Output White LED Demonstration (Warning:
Use eye protection when working with high-
brightness LEDs): Connect an external 14V DC
power supply between EXT VH and GND. Move JU9
to the 1-2 position, powering the PORT0–PORT4
LEDs from EXT VH.
19) Move JU16 to the 2-3 position, connecting PORT0
to series-connected white LEDs LED2, LED3, and
LED4.
20) In the software’s PWM Intensity tab, set 0x50 Port
P0 PWM Intensity to 255 and press the Write but-
ton.
21) In the software’s Port Configuration tab, set 0x43
GPIO Constant Current value of Constant Current
to 11: 20mA. The white LEDs are now blinking
brightly at 50% duty cycle.
22) In the software’s PWM Configuration tab, set 0x58
Port P0 Configuration value of Blink Period to 000
no blinking and press the Write button. The white
LEDs are now steady on.
Detailed Description of Software
The main window of the evaluation software (Figure 1)
provides direct access to all registers and controls the
interrupt response. The software automatically searches
for the MAX7360 EV kit hardware when launched. Once
the hardware is found and connected, the I2C Device
Address is shown in the lower-left corner.
Auto Read
The software automatically reads registers every 250ms
if the Auto Read all checkbox is checked. This rate can
be adjusted through the Options | Polling Rate menu
item.
Registers
Each of the MAX7360 registers is represented on the
software’s main window (Figures 1–4). Each register
has its own Read and Write buttons. Pressing the Read
entire FIFO now button reads register 0x00 repeatedly
until the FIFO indicates that all keypress events have
been read.
Key Grid
Whenever a keypress event is received, the key location
is shown on the Key Grid. This grid shows eight rows
and eight columns. Register 0x02 Debounce / Port
Enable determines how many of the column pins are
taken away from the Key Grid and is used for general-
purpose outputs (GPOs).
Interrupt Response
Although the PC software cannot respond to interrupts
with the speed of a true low-level hardware interrupt, the
software does offer flexibility for evaluation. The software
polls the status of the INTK and INTI output pins twice
every second. The Periodic Actions checkboxes deter-
mine what action the software takes when an interrupt is
active.
History Window
Each register read or write event is recorded in a scrolla-
ble text window underneath the interrupt handler actions.
Using LED12–LED7 as GPO Indicators
To configure the COL7 pin as an open-drain GPO, first
change the keyscan partition by changing the value of
the 0x02 Debounce / Port Enable register to Output
Ports GPO7 / Scan COL6 - COL0. Next, press its Write
button. Finally, connect LED12 to the COL7 pin by install-
ing a shunt at JU8. To drive COL7 low, illuminating the
LED, set the value of the 0x04 Ports register so that the
GPO7 checkbox is unchecked, and press its Write but-
ton.
To configure additional COL pins as open-drain GPOs,
the procedure is similar. Write the 0x02 Debounce /
Port Enable register to select how many of the COL pins
will be used for keyscanning and how many for output
ports. Keyscanning always uses the lowest numbered
COL pins. Set the JU3–JU8 jumpers to enable the LED
outputs as needed. Write the port data into the 0x04
Ports register (unchecked = output low, checked = out-
put undriven). See the MAX7360 IC data sheet for more
information about the ports register.
To configure the INTK pin for use as a GPO pin, set both
the FIFO Level and Time combo box of register 0x03
Interrupt to Not Used, then press the Write button.
When configured for GPO, the INTK pin is controlled
from the 0x04 Ports register (Figure 1).
Advanced User Interface
A serial interface can be used by advanced users by
selecting the Options | Interface (Advanced Users)
menu item.
For I2C, click on the 2-wire interface tab shown in Figure
5. Press the Hunt for active listeners button to obtain
the current MAX7360 slave address in the Target Device
Address combo box. In the General commands tab
select 1 - SMBusWriteByte(addr,cmd,data8) in the
Command drop-down list. Enter the desired values into
the Command byte and Data Out combo boxes and
then press the Execute button.
5Maxim Integrated
Evaluates: MAX7360
MAX7360 Evaluation Kit
Figure 1. MAX7360 EV Kit Software Main Window (Keyscan ConfigurationTab)
6 Maxim Integrated
Evaluates: MAX7360
MAX7360 Evaluation Kit
Figure 2. MAX7360 EV Kit Software Main Window (Port Configuration Tab)
7Maxim Integrated
Evaluates: MAX7360
MAX7360 Evaluation Kit
Figure 3. MAX7360 EV Kit Software Main Window (PWM Intensity Tab)
8 Maxim Integrated
Evaluates: MAX7360
MAX7360 Evaluation Kit
Figure 4. MAX7360 EV Kit Software Main Window (PWM Configuration Tab)
9Maxim Integrated
Evaluates: MAX7360
MAX7360 Evaluation Kit
Figure 5. Advanced User Interface Window (2-Wire Interface Tab)
10 Maxim Integrated
Evaluates: MAX7360
MAX7360 Evaluation Kit
Table 1. MAX7360 EV Kit Jumper Descriptions (JU1–JU25)
Detailed Description of Hardware
The MAX7360 EV kit provides a proven layout for the
MAX7360. An easy-to-use USB-PC connection is includ-
ed on the EV kit.
The MAX7360 (U1) scans a matrix of keys (KEY0–
KEY63). The EV kit provides an 8 x 8 matrix of keys. To
demonstrate GPO capability, LED indicators are jumper
selectable for COL2–COL7. The FTDI FT232BL (U5)
provides the USB engine. The USB 5V power is regu-
lated down to 2.5V by U2. LED13 indicates that USB 5V
power is present. The low-voltage RISC microcontroller,
MAXQ2000 (U4), processes commands sent by a pro-
gram running on the PC. The firmware loaded on this
board is identical to the MINIQUSB interface module.
Using an External I2C Bus Instead of USB
To disconnect from the on-board I2C bus, cut the links
on the back of the PCB at jumper locations JU10 and
JU11. If the external I2C bus already has appropriate
pullup resistors, cut the links at jumper locations JU12
and JU13. Leave the USB connector (J1) unconnected.
Move the JU2 shunt to pins 2-3, and provide 2.5V to 3.6V
power to the GND and EXT VCC oval pads. Connect
the external I2C bus to the SCL and SDA test points of
header H2.
JUMPER SIGNAL SHUNT POSITION DESCRIPTION
JU1 AD0
1-2* AD0 = GND, selecting I2C address 0x70
3-4 AD0 = SCL, selecting I2C address 0x74
5-6 AD0 = VCC, selecting I2C address 0x78
7-8 AD0 = SDA, selecting I2C address 0x7C
JU2 VCC 1-2* Power VCC from 3.3V LDO
2-3 Power VCC from external user-supplied power supply
JU3 GPO2 1-2 COL2 drives GPO2 LED
Open* COL2 connects to key matrix
JU4 GPO3 1-2 COL3 drives GPO3 LED
Open* COL3 connects to key matrix
JU5 GPO4 1-2 COL4 drives GPO4 LED
Open* COL4 connects to key matrix
JU6 GPO5 1-2 COL5 drives GPO5 LED
Open* COL5 connects to key matrix
JU7 GPO6 1-2 COL6 drives GPO6 LED
Open* COL6 connects to key matrix
JU8 GPO7 1-2 COL7 drives GPO7 LED
Open* COL7 connects to key matrix
JU9 VH 1-2* Power VH from external user-supplied power supply (VH < 14V)
2-3 Power VH from USB+5V supply
JU10 SDA PCB trace shorted* SDA connected to on-board I2C bus
PCB trace cut open SDA must be connected to an external I2C bus
JU11 SCL PCB trace shorted* SCL connected to on-board I2C bus
PCB trace cut open SCL must be connected to an external I2C bus
JU12 SDA PCB trace shorted* SDA connected to on-board pullup resistor
PCB trace cut open SDA pullup resistor must be provided externally
11Maxim Integrated
Evaluates: MAX7360
MAX7360 Evaluation Kit
*Default position.
Table 1. MAX7360 EV Kit Jumper Descriptions (JU1–JU25) (continued)
JUMPER SIGNAL SHUNT POSITION DESCRIPTION
JU13 SCL PCB trace shorted* SCL connected to on-board pullup resistor
PCB trace cut open SCL pullup resistor must be provided externally
JU14 TEST PCB trace shorted* U1 pin A1 is connected to GND
PCB trace cut open U1 pin A1 is not connected
JU15 VLED 1-2* Power GPO2–GPO7 LEDs from 3.3V LDO
2-3 Power GPO2–GPO7 LEDs from external user-supplied 3.3V power supply
JU16 PORT0
1-2* PORT0 drives single red LED
2-3 PORT0 drives 3 series-connected white LEDs (requires VH = 14V)
Open PORT0 unconnected
JU17 PORT5 1-2* PORT5 is pulled high by 2.2kI resistor, and pulled low by momentary switch SW1
Open PORT5 not connected unless momentary switch SW1 is pressed
JU18 PORT1 1-2* PORT1 drives red channel of RGB color LED
Open PORT1 unconnected
JU19 PORT2 1-2* PORT2 drives green channel of RGB color LED
Open PORT2 unconnected
JU20 PORT3 1-2* PORT3 drives blue channel of RGB color LED
Open PORT3 unconnected
JU21 PORT4 1-2* PORT4 drives single red LED
Open PORT4 unconnected
JU22 PORT6 1-2* PORT6 connects to rotary encoder RE67
Open PORT6 unconnected
JU23 PORT7 1-2* PORT7 connects to rotary encoder RE67
Open PORT7 unconnected
JU24 INTI PCB trace shorted* INTI connected to MINIQUSB GPIO K1 input
PCB trace cut open INTI not connected to MINIQUSB
JU25 INTK PCB trace shorted* INTK connected to MINIQUSB GPIO K6 input
PCB trace cut open INTK not connected to MINIQUSB
12 Maxim Integrated
Evaluates: MAX7360
MAX7360 Evaluation Kit
Figure 6a. MAX7360 EV Kit Schematic (Sheet 1 of 5)
13Maxim Integrated
Evaluates: MAX7360
MAX7360 Evaluation Kit
Figure 6b. MAX7360 EV Kit Schematic (Sheet 2 of 5)
14 Maxim Integrated
Evaluates: MAX7360
MAX7360 Evaluation Kit
Figure 6c. MAX7360 EV Kit Schematic (Sheet 3 of 5)
15Maxim Integrated
Evaluates: MAX7360
MAX7360 Evaluation Kit
Figure 6d. MAX7360 EV Kit Schematic (Sheet 4 of 5)
16 Maxim Integrated
Evaluates: MAX7360
MAX7360 Evaluation Kit
Figure 6e. MAX7360 EV Kit Schematic (Sheet 5 of 5)
17Maxim Integrated
Evaluates: MAX7360
MAX7360 Evaluation Kit
Figure 8. MAX7360 EV Kit PCB Layout—Component Side
Figure 7. MAX7360 EV Kit Component Placement Guide—Component Side
Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent
licenses are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time. The parametric values (min and
max limits) shown in the Electrical Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance.
18 Maxim Integrated 160 Rio Robles, San Jose, CA 95134 USA 1-408-601-1000
© 2009 Maxim Integrated Products, Inc. Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc.
Evaluates: MAX7360
MAX7360 Evaluation Kit
Figure 9. MAX7360 EV Kit PCB Layout—Solder Side
