Maxim MAX7349 User manual

General Description
The MAX7349 evaluation kit (EV kit) is an assembled
and tested circuit board that demonstrates the
MAX7349 2-wire-interfaced, low-EMI key switch and
sounder controller. Windows®98SE/2000/XP software
provides a handy user interface to exercise the features
of the MAX7349.
Features
♦Proven PC Board Layout
♦Complete Evaluation System
♦7 x 8 Key Matrix Included
♦Sounder Included
♦Fully Assembled and Tested
Evaluates: MAX7349/Emulates: MAX7347/MAX7348
MAX7349 Evaluation Kit
________________________________________________________________ Maxim Integrated Products 1
19-3994; Rev 0; 2/06
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.
Ordering Information
PART TEMP RANGE
INTERFACE TYPE
MAX7349EVKIT 0°C to +70°C Windows software
DESIGNATION QTY DESCRIPTION
C1, C12–C16,
C23, C24 8
0.1µF, 10V min X7R ceramic
capacitors (0603)
TDK C1608X7R1E104K
C3 1
22µF, 16V ceramic capacitor (1210)
TDK C3225X5R1C226K
TDK C3225X5R1C226M
C5 1
0.033µF, 6.3V min X7R ceramic
capacitor (0603)
TDK C1608X7R1E333K
Murata GRM188R71E333K
Taiyo Yuden EMK107BJ333KA
C6, C7 2
22pF C0G ceramic capacitors (0603)
TDK C1608C0G1H220J
Murata GRM1885C1H220J
C8, C9 2
10pF C0G ceramic capacitors (0603)
Murata GRM1885C1H100J
TDK C1608C0G1H100J
C18, C19 2
1µF, 6.3V min X7R ceramic
capacitors (0603)
TDK C1608X5R0J105K
Murata GRM188R60J105K
Taiyo Yuden JMK107BJ105MA
C31 0
0.22µF ceramic capacitor (0603),
not installed
TDK C1608X7R1A224K
C32 0
0.068µF ceramic capacitor (0603),
not installed
TDK C1608X7R1E683K
C33 0
0.022µF ceramic capacitor (0603),
not installed
TDK C1608X7R1H223K
Windows is a registered trademark of Microsoft Corp.
Component List
DESIGNATION
QTY
DESCRIPTION
C34 0
220pF ceramic capacitor (0603),
not installed
TDK C1608X7R1H221K
C35 0
0.1µF ceramic capacitor (0603),
not installed
TDK C1608X7R1C104K
H1, H2 2 12-pin headers
JU1 1 2 x 4 dual-row vertical header
JU2, JU3, JU6
33-pin headers
JU4, JU5, JU9,
JU10 42-pin headers
JU7, JU8, JU11
02-pin headers, not installed
KEY0–KEY55
56
Momentary 6mm pushbutton switches
Omron B3F1000
LED1, LED2 2 Red LEDs (T1-3/4)
P1 1 Pizeoelectric sounder
Murata PKM22EPPH-4001-B0
P2 1 USB series B right-angle PC mount
receptacle
P5 (JTAG) 0 Vertical header, 2 x 5 pins, keyed
pin 7
R1 1 2.2kΩ±5% resistor (1206)
R2, R5, R6 3 1.5kΩ±5% resistors (1206)
R7, R8, R9 3 470Ω±5% resistors (1206)
R12, R13 2 27Ω±5% resistors (1206)
R14, R15 2 10kΩ±5% resistors (1206)
R21 0 2.61kΩ±1% resistor (1206),
not installed

Evaluates: MAX7349/Emulates: MAX7347/MAX7348
Quick Start
Required Equipment
Before you begin, you need the following equipment:
•Maxim MAX7349 EV kit
•USB-type A-B cable (included with MAX7349EVKIT)
•Windows 98SE/2000/XP computer with a spare
USB port
•Administrator privileges may be required when first
installing the device on Windows 2000/XP
Procedure
Do not turn on the power until all connections are
made.
1) Ensure that the jumper settings are in the default
positions. See Table 1.
2) Install the evaluation software on your computer by
running the INSTALL.EXE program on the installa-
tion disk. The program files are copied and icons
are created for them in the Windows Start menu.
3) Connect the USB cable between the MAX7349 EV kit
and the computer. When you plug in the MAX7349 EV kit
board for the first time, the Windows plug-and-play
system detects the new hardware and automatically
runs the Add New Hardware Wizard. (If the Add
New Hardware Wizard does not appear after one
minute, unplug the USB cable and plug it in again.)
Be sure to specify the search location. This EV kit is
based on the CMAXQUSB design, so the software
includes a copy of the device driver in the installed
software directory. Refer to Application Note 3601
Troubleshooting Windows Plug-and-Play and USB
for Maxim Evaluation Kits for more details.
4) During device driver installation, Windows XP
shows a warning message, indicating that the
MAX7349 Evaluation Kit
2_______________________________________________________________________________________
DESIGNATION
QTY
DESCRIPTION
R22 0 21.5kΩ±1% resistor (1206),
not installed
R23 0 32.4kΩ±1% resistor (1206),
not installed
R24 0 21.5kΩ±1% resistor (1206),
not installed
R25 0 10Ω±5% resistor (1206),
not installed
U1 1
Maxim MAX7349AEG (24-pin QSOP)
U2 1 FTDI FT232BM
(32-pin TQFP, 7mm x 7mm)
U3 1 Maxim MAX8511EXK25-T
ADV top mark (5-pin SC70)
U4 1 93C46 type 3-wire EEPROM
16-bit architecture (8-pin SO)
U5 1
Maxim MAXQ2000-RAX (68-pin QFN)
U6 0
Maxim MAX4366EUA+ (8-pin µMAX)
Component List (continued)
DESIGNATION
QTY
DESCRIPTION
VR1 1 Volume control, 5kΩ
Panasonic EVL-HFAA01A53
Y1 1
16MHz crystal (HC49/US),
parallel resonant, 20pF load
Citizen HC49US16.000MABJ
ECS ECS-160-20-4
Suntsu SCS20B-16.000MHZ-I
Y2 1
6MHz crystal (HC49/US)
Citizen HC49US6.000MABJ
Suntsu SCS22B-6.000MHZ-I
Y3 1
32.768kHz watch crystal,
12.5pF cylindrical
Epson C-001R 32.7680K-A
Suntsu SCT3-32.768KHZ
—8Shunts
—1MAX7349 EV kit PC board
—4
Rubber bumpers, 0.100in (H) x
0.400in (W) square
—1
USB high-speed A-to-B cable,
5ft (1.5m)
Component Suppliers
SUPPLIER PHONE WEBSITE
Murata
770-436-1300
www.murata.com
Panasonic
714-373-7366
www.panasonic.com
Suntsu Frequency
Control
949-305-0220
www.suntsuinc.com
Taiyo Yuden
800-348-2496
www.t-yuden.com
TDK
847-803-6100
www.component.tdk.com
Note: Indicate that you are using the MAX7349 when contacting
these component suppliers.
MAXQ is a registered trademark of Maxim Integrated Products, Inc.

_______________________________________________________________________________________________________ 3
device driver Maxim uses does not contain a digital
signature. This is not an error condition. It is safe to
proceed with the installation.
5) Verify that the EV kit’s LED1 is lit, indicating that the
USB is connected and providing power.
6) Start the EV kit software by clicking its icon in the
Windows Start menu.
7) The software automatically connects to the board
after a few seconds.
8) Click the Initialize EV kit button to write the power-
up command and configure default settings for
demonstration. This button writes to three registers:
Write(0x04 configuration) = 0xF8; Write(0x01
debounce) = 0x3F; and Write(0x03 interrupt) = 0x10.
9) On the EV kit board, press the buttons in the
KEY0–KEY55 matrix. Verify that the key scan codes
are reported in the software’s history window after 5
to 6 keypress events are queued, depending on the
debounce time and interrupt register settings. The
Evaluates: MAX7349/Emulates: MAX7347/MAX7348
MAX7349 Evaluation Kit
Table 1. Jumper Functions
JUMPER
SHUNT
LOCATION
FUNCTION
Pins 1 and 2*
AD0 = GND; I2C address 0x70 / 0x72
Pins 3 and 4
AD0 = SCL; I2C address 0x7C / 0x7E
Pins 5 and 6
AD0 = VDD; I2C address 0x74 / 0x76
JU1
Pins 7 and 8
AD0 = SDA; I2C address 0x78 / 0x7A
Pins 1 and 2*
Pizeo Sounder. P1 driven directly by SOUNDER output.
JU2
Pins 2 and 3
Pizeo Sounder. P1 driven through optional active filter circuit. Requires installing U6 and other components.
Pins 1 and 2*
ALERT Input. Connected to VDD.
Pins 2 and 3
ALERT Input. Connected to GND.
JU3
No shunt ALERT Input. Must be connected to an external drive signal.
Pins 1 and 2*
SDA. Connected to on-board I2C bus
JU4 No shunt SDA. Must be connected to an external I2C bus.
Pins 1 and 2*
SCL. Connected to on-board I2C bus.
JU5 No shunt SCL. Must be connected to an external I2C bus
Pins 1 and 2*
INT. Pulled up to on-board VDD supply.
Pins 2 and 3
INT. Pulled up to external INTVDD supply.JU6
No shunt Invalid Configuration. Do not use.
Not installed*
VDDIO = 2.5V from U3
JU7 PC board
trace cut open
VDDIO. Must be provided externally. 2.5V < VDDIO < 3.6V.
Not installed*
VDD = VDDIO
JU8 PC board
trace cut open
VDD Power to MAX7349. Must be provided externally. VDD ≤VDDIO.
Pins 1 and 2*
SDA. Connected to on-board pullup resistor.
JU9 No shunt SDA. Pullup resistor must be provided externally.
Pins 1 and 2*
SCL. Connected to on-board pullup resistor.
JU10 No shunt SCL. Pullup resistor must be provided externally.
Not installed*
JTAG Power. Not connected to USB power.
JU11
Pins 1 and 2
JTAG Power. Connected to USB power.
*Default configuration.

Evaluates: MAX7349/Emulates: MAX7347/MAX7348
most recent scan code is identified in the Key Grid.
Click the 0x04 Configuration group’s Read button
and verify reported status sound from keypress.
10) In the 0x05 Ports group, uncheck the GPO7 box
and click Write. Verify LED2 lights up.
11) In the 0x05 Ports group, check the GPO7 box and
click Write. Verify LED2 no longer lights.
12) Move shunt JU3 and observe the sounder beep in
response to the ALERT pin. Verify register 0x03
Interrupt shows ALERT as the source of interrupt.
Click the 0x04 Configuration group’s Read button
and verify reported status sound from keypress.
13) In the Sounder group, select the sounder com-
mands 125ms and C5 from the drop-down menus,
check the BUF = 0 box, and click Write. Verify the
sounder beeps. Click the 0x04 Configuration
group’s Read button and verify reported status
sound from keypress.
Detailed Description of Software
Connecting to Hardware
The software automatically searches for the MAX7349
EV kit hardware when launched. Once the hardware is
found and connected, the I2C device address is shown
in the upper-left corner.
Autoread
The software automatically reads registers every 2 to 3
seconds if Auto Read 1-7 is checked. This option should
be left unchecked when preparing to write new values.
Registers
Each of the MAX7349 registers is represented on the
software’s main window. See Figure 1. Each register has
its own Read and Write buttons. Clicking Read entire
FIFO now 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 loca-
tion is shown on the Key Grid. This grid shows eight
rows and up to eight columns. Register 0x01
Debounce / Port Enable determines how many of the
column pins are taken away from the Key Grid and
used for general-purpose outputs.
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 INT output pin every 2 seconds.
The Interrupt Handler Actions checkboxes determine
what action the software takes when INT is active.
History Window
Each register read or write event is recorded in a scrol-
lable text window underneath the interrupt handler actions.
Keyboard Navigation
When you type on the PC keyboard, the system must
know which control should receive the keys. Press the
Tab key to move the keyboard’s focus from one control
to the next. The focused control is indicated by a dotted
outline. Shift+Tab moves the focus to the previously
focused control. Buttons respond to the keyboard’s
spacebar. Some controls respond to the keyboard’s Up
and Down arrow keys. Activate the program’s menu bar
by pressing the F10 key, then press the letter of the
menu item you want. Most menu items have one letter
underlined, indicating their shortcut key.
Detailed Description of Hardware
The MAX7349 (U1) scans a matrix of keys (KEY0–KEY55).
The evaluation kit provides a 7 x 8 matrix of keys,
although the MAX7349 is capable of scanning an 8 x 8
matrix. To demonstrate general-purpose output capabili-
ty, one of the scanning columns (COL7/PORT7) is con-
nected to an indicator (LED2).
The FTDI FT232BM (U2) provides the USB engine. The
USB 5V power is regulated down to 2.5V by U3. LED1
indicates that USB 5V power is present.
Jumpers JU4 and JU5 optionally disconnect the
MAX7349 SCL/SDA, allowing the use of an external
user-provided I2C bus. Jumpers JU9 and JU10 option-
ally disable the on-board 1.5kΩtermination resistors R5
and R6, allowing the use of external user-provided I2C
pullup resistors.
To optionally improve the sounder output waveform,
space is provided to mount a MAX4366 (U6) and associ-
ated passive components C31–C35 and R21–R25 to form
a lowpass third-order Chebyshev filter and output stage,
as shown in Figure 12 of the MAX7347/MAX7348/
MAX7349 data sheet. If these filter components are
installed, move JU2 shunt to position 2-3 to use the filter
to drive the on-board pizeo transducer.
The low-voltage RISC microcontroller, MAXQ2000-RAX
(U5), processes commands sent by a program running
on the PC. Each particular EV kit has its own custom
software specific to that kit. Connector P5 is used dur-
ing factory tests to program the MAXQ2000 in-circuit
using the JTAG interface. The connector pin configura-
tion is compatible with the MAXQ2000 evaluation kit’s
MAX7349 Evaluation Kit
4 _______________________________________________________________________________________

MAXQ-JTAG-001 board. The firmware loaded on this
board is identical to the CMAXQUSB interface module.
Using an External I2C Bus Instead of USB
To disconnect from the on-board I2C bus, remove the
shunts from jumpers JU4 and JU5. Leave the USB con-
nector, P2, unconnected. Provide 2.5V to 3.6V power to
the GND and V+ test points on header H2. Connect the
external I2C bus to the SCL and SDA test points. If the
external I2C bus already has appropriate pullup resis-
tors, remove shunts from JU9 and JU10.
Emulating the MAX7348
The MAX7348 behaves just like the MAX7349, except it
has fewer columns (COL0–COL4) and no ALERT input.
Although a MAX7348 could be fitted to the PC board
(aligning pin 1 with ROW0), the MAX7348 can be emu-
lated by using a subset of the MAX7349 pins and regis-
ter bits. See Tables 2 and 3.
Emulating the MAX7347
The MAX7347 behaves just like the MAX7349, except it
has fewer columns (COL0–COL2), no ALERT input, and
no SOUNDER output. The MAX7347 cannot be fitted to
the PC board due to differences in pin count and pin con-
figuration, but the MAX7347 can be emulated by using a
subset of the MAX7349 pins and register bits. MAX7347
has a fixed I2C address, so connect AD0 to GND by
placing JU1 in position 1-2. Because there is no ALERT,
place JU3 in position 2-3. See Tables 2 and 3.
Evaluates: MAX7349/Emulates: MAX7347/MAX7348
MAX7349 Evaluation Kit
_______________________________________________________________________________________ 5
Figure 1. The MAX7349 Evaluation Software’s Main Window Provides Direct Access to All Registers and Controls the Interrupt Response

Evaluates: MAX7349/Emulates: MAX7347/MAX7348
MAX7349 Evaluation Kit
6_______________________________________________________________________________________
Table 2. Pin Configuration when Emulating Other Devices
PIN MAX7349 EV KIT SIGNAL PIN MAX7348 FUNCTION PIN MAX7347 FUNCTION
1COL7/PORT7 — — — —
2ROW0 1 ROW0 1 ROW0
3ROW1 2 ROW1 2 ROW1
4ROW2 3 ROW2 3 ROW2
5ROW3 4 ROW3 4 ROW3
6COL3/PORT3 5 COL3/PORT3 — —
7COL4/PORT4 6 COL4/PORT4 — —
8ROW4 7 ROW4 5 ROW4
9ROW5 8 ROW5 6 ROW5
10 ROW6 9 ROW6 7 ROW6
11 ROW7 10 ROW7 8 ROW7
12 COL6/PORT6 — — — —
24 ALERT — — — —
23 V+ 20 V+ 16 V+
22 INT 19 INT 15 INT
21 SCL 18 SCL 14 SCL
20 SDA 17 SDA 13 SDA
19 AD0 16 AD0 — —
18 GND 15 GND 12 GND
17 SOUNDER 14 SOUNDER — —
16 COL0 13 COL0 11 COL0
15 COL1 12 COL1 10 COL1
14 COL2/PORT2 11 COL2/PORT2 9 COL2/PORT2
13 COL5/PORT5 — — — —

Evaluates: MAX7349/Emulates: MAX7347/MAX7348
MAX7349 Evaluation Kit
_______________________________________________________________________________________ 7
Table 3. Registers Affected when Emulating Other Devices
I2C ADDRESS REGISTER MAX7348 MAX7347
0111 xx0 R/W 0 FIFO — —
0111 xx0 R/W 1 Debounce / Port Enable
No COL7/PORT7
No COL6/PORT6
No COL5/PORT5
No COL7/PORT7
No COL6/PORT6
No COL5/PORT5
No COL4/PORT4
No COL3/PORT3
0111 xx0 R/W 2 Auto Repeat — —
0111 xx0 R/W 3 Interrupt — —
0111 xx0 R/W 4 Configuration No ALERT No ALERT
0111 xx0 R/W 5 Ports
No GPO7
No GPO6
No GOP5
No GPO7
No GPO6
No GPO5
No GPO4
No GPO3
0111 xx0 R/W 6 Key Sound — No SOUNDER
0111 xx0 R/W 7 Alert Sound — No SOUNDER
0111 xx1 R/W Sounder command — No SOUNDER

Evaluates: MAX7349/Emulates: MAX7347/MAX7348
MAX7349 Evaluation Kit
8_______________________________________________________________________________________
Figure 2. MAX7349 EV Kit Schematic (Sheet 1 of 4)
H1
COL7/PORT7
COL7/PORT7 1
H1-1
ROW0
ROW0 2
H1-2
ROW1
ROW1 3
H1-3
ROW2
ROW2 4
H1-4
ROW3
ROW3 5
H1-5
COL3/PORT3
COL3/PORT3 6
H1-6
COL4/PORT4
COL4/PORT4 7
H1-7
ROW4
ROW4 8
H1-8
ROW5
ROW5 9
H1-9
ROW6
ROW6 10
H1-10
ROW7
ROW7 11
H1-11
COL6/PORT6
COL6/PORT6 12
H1-12
U1
MAX7349
1
2
3
VDD
JU3
VDD
C1
0.1µF
VDD
VDD
R9
470Ω
LED2
RED
COL7/PORT7
1
2
3
VDD
JU6
INTVDD
INT
R15
10kΩ
JU1-5 JU1-6
JU1-8
JU1-7
JU1-3
JU1-1
JU1
HEADER 2 x 4
JU1-4
JU1-2
SCLAD0 SDA
VDD
VDD
SOUNDER
R25
10Ω
2P1 SOUNDER 1
1
2
3
JU2 SOUNDER
GND
VR1
5kΩ
1
2
3
R21
2.61kΩ
1%
C31
0.22µF
C32
0.068µF
C33
0.022µF
R24
21.5kΩ
1%
C34
220pF
C35
0.1µF
U6
MAX4366
VCC
6
BIAS
2
IN+
3
IN-
4
SHDN
OUT-
OUT+
GND
1 8 5 7
R22
21.5kΩ
1%
R23
32.4kΩ
1%
H2
ALERT ALERT
24 H2-1
V+ 23 H2-2
INT INT
22 H2-3
SCL SCL
21 H2-4
SDA SDA
20 H2-5
AD0 ADO
19 H2-6
GND 18 H2-7
SOUNDER SOUNDER
17 H2-8
COL0 COL0
16 H2-9
COL1 COL1
15 H2-10
COL2/PORT2 COL2/PORT2
14 H2-11
COL5/PORT5 COL5/PORT5
13 H2-12

Evaluates: MAX7349/Emulates: MAX7347/MAX7348
MAX7349 Evaluation Kit
_______________________________________________________________________________________ 9
Figure 2. MAX7349 EV Kit Schematic (Sheet 2 of 4)
COL6/PORT6
KEY55
21
ROW7
21
KEY54
ROW6
21
KEY53
ROW5
21
KEY52
ROW4
21
KEY51
ROW3
21
KEY50
ROW2
21
KEY49
ROW1
21
KEY48
ROW0
COL5/PORT5
KEY47
21
ROW7
21
KEY46
ROW6
21
KEY45
ROW5
21
KEY44
ROW4
21
KEY43
ROW3
21
KEY42
ROW2
21
KEY41
ROW1
21
KEY40
ROW0
COL4/PORT4
KEY39
21
ROW7
21
KEY38
ROW6
21
KEY37
ROW5
21
KEY36
ROW4
21
KEY35
ROW3
21
KEY34
ROW2
21
KEY33
ROW1
21
KEY32
ROW0
COL3/PORT3
KEY31
21
ROW7
21
KEY30
ROW6
21
KEY29
ROW5
21
KEY28
ROW4
21
KEY27
ROW3
21
KEY26
ROW2
21
KEY25
ROW1
21
KEY24
ROW0
COL2/PORT2
KEY23
21
ROW7
21
KEY22
ROW6
21
KEY21
ROW5
21
KEY20
ROW4
21
KEY19
ROW3
21
KEY18
ROW2
21
KEY17
ROW1
21
KEY16
ROW0
COL1
KEY15
21
ROW7
21
KEY14
ROW6
21
KEY13
ROW5
21
KEY12
ROW4
21
KEY11
ROW3
21
KEY10
ROW2
21
KEY9
ROW1
21
KEY8
ROW0
COL0
KEY7
21
ROW7
21
KEY6
ROW6
21
KEY5
ROW5
21
KEY4
ROW4
21
KEY3
ROW3
21
KEY2
ROW2
21
KEY1
ROW1
21
KEY0
ROW0

Evaluates: MAX7349/Emulates: MAX7347/MAX7348
MAX7349 Evaluation Kit
10 ______________________________________________________________________________________
Figure 2. MAX7349 EV Kit Schematic (Sheet 3 of 4)
MAXQ2000–RAX
U5
VDDCPU
49
SEG11/P1.3
1
SEG12/P1.4
2
SEG13/P1.5
3
SEG14/P1.6
4
SEG15/P1.7
5
SEG16/P2.0
6
SEG17/P2.1
7
SEG18/P2.2
8
SEG19/P2.3
9
SEG20/P2.4
10
SEG21/P2.5
11
SEG22/P2.6
12
SEG23/P2.7
13
SEG24/P3.0
14
SEG25/P3.1
15
SEG26/P3.2
16
SEG27/P3.3
17
GND
28
GND
42
P6.5/TO/WKOUT
VDDIO
48
27
P6.4/TOB/WKOUT 47
P6.3/12/OW_IN 46
P6.2/T2B/OW_OUT 45
P6.1/T1/INT13 44
P6.0/T1B/INT12 43
P5.7/MISO 41
P5.6/SCLK 40
P5.5/MOSI 39
SP5.4/SS 38
P5.3/TX1/INT11 37
P5.2/RX1/INT10 36
+2.5V
VDDIO
EXPOSED PADDLE CONNECTS TO GND
35
32KIN 34
32KOUT
Y3
32.768kHz
C24
0.1µF
VDDIO
C23
0.1µF
+2.5V
SDA
JU4
SCL
JU5
U1P65
U1P64
U1P53
U1P52
SEG10/P1.2
SEG9/P1.1
SG8/P1.0
SEG7/P0.7/INT3 SEG6/P0.6/INT2 SEG5/P0.5/INT1 SEG4/P0.4/INT0
SEG3/P0.3 SEG2/P0.2 SEG1/P0.1 SEG0/P0.0
VADJ
VLCO2 VLCO1
VLCD
P7.1/RXO/INT15
U1P70
SEG28/P3.4/INT4
18 19 20 21 22 23 24 25 26 29 30 31 32 33
68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53
P7.0/TXO/INT14
U1P71
52
SEG29/P3.5/INT5 SEG30/P3.6/INT6 SEG31/P3.7/INT7 SEG32 SEG33/COM3 SEG34/COM2 SEG35/COM1 COM0 P4.0/TCK/INT8 P4.1/TDI/INT9 P4.2/TMS P4.3/TDO RESET
U1P43 U1P42
RESET
U1P40 U1P41
50
HF XIN 51
HF XOUT
Y1
16MHz
C9
10pF
C8
10pF
VDDIOVDDIO
INT

Evaluates: MAX7349/Emulates: MAX7347/MAX7348
MAX7349 Evaluation Kit
______________________________________________________________________________________ 11
Figure 2. MAX7349 EV Kit Schematic (Sheet 4 of 4)
U2
FT232BM
3V3OUT
6
USBDM
8 7
5 4
XTIN
27
USBDP XTOUT
28
EECS
32
EESK
1
EEDATA
2
TEST
31
TXD
RXD
19 18
TXDEN 16
12 11 14 25 U1P71
24 U1P70
23 U1P52
22 U1P65
21 U1P53
USBVCC
EEDATA
20 U1P64
9
30 3
VCC VCC VCCIOAVVC
26 13
Y2 6MHz
C6
22pF
C7
22pF
VDDIO
RTS
CTS DTR DSR DCD
TXLED
RSTOUT RESET
RXLED
15 10
PWRCTL
PWREN
SLEEP
RI
C15
0.1µF
C12
0.1µF
C14
0.1µF
C13
0.1µF
R7
470Ω
R12
27Ω
R13
27Ω
C5
0.033µF
R2
15kΩ
P2-3
P2-4
P2
USB SERIES B
P2-2
P2-1
C3
22µF
USBVCC
29
AGND
17
GNDGND
P5-5 P5-6
P5-8
P5-7
P5-3
P5-1
P5
HEADER 2 x 5
P5-4
P5-2
RESET
P5-10
P5-9
JU11
VDDIO
USBVCC
U1P41 U1P43 U1P40 U1P42
SCL
JU10
SDA
JU9
VDD
R6 1.5kΩ
R5
1.5kΩ
VDDIO
R8 470Ω
LED1 RED
C16 0.1µF
USBVCC
U4
93C46
CLK VCC
N.C.
DO
2
CS
1
8 7
4
N.C.
DI 6
3
5
GND
V
R14
10kΩ
R1
2.2kΩ
EEDATA
C18
1µF
USBVCC
C19 1µF
+2.5V VDDIO VDD
U3
MAX8511
IN OUT
GND
JU8JU7
15
2
3SHDN

Evaluates: MAX7349/Emulates: MAX7347/MAX7348
MAX7349 Evaluation Kit
12 ______________________________________________________________________________________
Figure 3. MAX7349 EV Kit Component Placement Guide—Component Side

Evaluates: MAX7349/Emulates: MAX7347/MAX7348
MAX7349 Evaluation Kit
______________________________________________________________________________________ 13
Figure 4. MAX7349 EV Kit PC Board Layout—Component Side

Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
14 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600
©2006 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products, Inc.
Evaluates: MAX7349/Emulates: MAX7347/MAX7348
MAX7349 Evaluation Kit
Figure 5. MAX7349 EV Kit PC Board Layout—Solder Side
Springer