Parallax 27150 Manuale utente

Web Site: www.parallax.com

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Technical: [email protected]

Office: (916) 624-8333

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Tech Support: (888) 997-8267

P8X32A-Q44 SchmartBoard (#27150)

Want to learn how to surface solder but don’t know where to start? Parallax Inc has partnered with

SchmartBoard to bring an easy electronic circuit prototyping system in the form of a kit. This kit is a

perfect starting point; the SchmartBoard technology makes surface mount soldering easy. Once

completed, the board will host Parallax's most powerful microcontroller on this convenient development

platform, allowing access to all 32 I/O pins of the multi-core Propeller chip.

This board is designed to accommodate either surface mount or through-hole components in some

circuits. Wherever there is an option, both types of components have been included. The surface mount

soldering options, while more challenging, provides easier access to the J5 header.

Features

yPropeller microcontroller

yHeaders for easy access to the I/O pins

for prototyping

yAC barrel jack for power supply

convenience

ySchmartboard technology for easy

surface mount soldering

y3.3 & 5.0 VDC on-board regulators

ySurface mount and through-hole

component configuration options

Key Specifications

yPower requirements: 6 to 9 VDC

yCommunication: Serial for programming

via Prop Plug (not included)

yOperating temperature: -32 to +158 °F (-0 to +70 °C)

yDimensions: 2 x 2 x 0.56 in (50.60 x 50.60 x 14.45 mm)

Precautions

yPlease read entire document before beginning assembly.

yTake all the necessary precautions for handling a hot soldering iron, solder, and soldering

equipment, including a well ventilated work area and proper safety gear including eye protection.

yDo not power unit until all parts are attached.

yCheck soldering joints throughout the project, this will help ensure no cold solder joints have

been overlooked; and help when it comes to troubleshooting.

Warning

Any attempt to assemble or complete this kit voids any warranty that is covered by Parallax Inc. and/or

SchmartBoard. Inspect your board carefully for manufacturing flaws before proceeding. If you have

questions regarding assembly please review the steps and if further questions arise you can call our

Technical Support staff at 888-997-8267 and they will be happy to help with your questions.

Bill of Materials

Please refer to the schematic appended to the end of this PDF for the Location Used references.

Part # Description Quantity Location Used

150-01031 Resistor, 10 k[ brown, black, orange ] 2 R2, R3

150-04710 Resistor, 470 [ yellow, violet, brown ] 1 R1

150-11031 Resistor, 10 kSMT* 2 R2, R3

150-14712 Resistor, 470 SMT* 1 R1

200-11503 Capacitor, 10 µF * 3 C1, C2, C3

201-01050 Capacitor, 1 µF electrolytic 1 C4

201-01062 Capacitor, 10 µF electrolytic 3 C1, C2, C3

213-01051 Capacitor, 1 µF SMT* 1 C4

251-05000 5 MHz Crystal 1 Y1

300-27150 PCB SchmartBoard 1 N/A

350-00006 LED-Red - T1 1 D1

350-10001 LED-Red 0603 SMT* 1 D1

400-00025 Push Button 1 SW1

451-00201 2-Pin Header [ single row ] 1 J3

451-01002 10-pin SIP Socket 4 J5, J6, J7, J8

451-04001 40-pin SIP Header [ optional header ] 1 J5, J6, J7, J8

451-04002 4-pin Header [ right angle ] 1 J2

452-00007 Power Jack [ 2.1mm ] 1 J1

601-10335 3.3 Voltage Regulator [ 17-33 ] SMT 1 U4

601-10340 5.0 Voltage Regulator [ 117-5 ] SMT 1 U3

700-00037 PCB Rubber Feet 1 Underside of PCB

602-10001 512K EEPROM 1 U2

P8X32A-Q44 Propeller Chip [ P8X32A-Q44 ] 1 U1

* These SMT are surface-mount options for the corresponding through-hole parts supplied.

Tools Required (Not Included)

•Basic soldering iron with 2.4 mm soldering tip

•Lead-Free Solder (with or without resin core)

•Standard flux

•70% or higher isopropyl alcohol & cleaning utensils (soft bristled brush works nice)

•Probe soldering tool (or other non conductive tool)

•Helping Hands tool w/ magnifier (not needed, but helpful)

•Soldering Wick

•Wire Cutters

Assembly Instructions

This kit can be assembled in two ways; using mostly surface mount or through-hole parts. This set of

instructions covers the through-hole component options where available; for those interested in a

challenge you can use the surface mount parts in place of the through-hole parts to complete the project.

Step 1: Unpack contents of package and

compare with the Bill of Materials above to

ensure all parts are accounted for. If any

parts are missing, contact Parallax directly

(contact information is at the top of the first

page).

Step 2: Wash the PCB with alcohol to clean

the surface of any grease or oils, and allow it

to dry before soldering.

Step 3: Solder is in place on the board for U1

and U2.

Place the P8X32A-Q44 on its pad (U1) so the

Pin 1 indicator on the chip and on the board

are matched, and the legs of the chip are

aligned with solder grooves.

Then, add some flux.

(To position the chip you can use tape or a

non-conductive tool like the one shown;

which worked very well.)

Step 4: Carefully solder each chip leg to the

SchmartBoard, by pushing the solder from the

outside of the groove to the chip leg; hold

iron by pad about 2-3 seconds.

You do not need to add any solder to this

step. Put the soldering iron tip in the first

electronic pad groove at the outside point of

the groove and push it forward until it

touches the chip leg. Do not put pressure in a

downward position; the solder will melt and

be pushed towards the leg. Do this in each

groove that has a leg.

Step 5: Repeat Steps 3 to 5 to solder the

EEPROM chip (U2) as you did the P8X32A

chip.

Step 6: Open the P8X32A SchmartBoard

Schematic.pdf; this will be a reference while

assembling.

Each of the parts that you will install from

here out will need the appropriate portions of

solder and flux; depending on the type of

solder you use will determine the heat needed

for the soldering iron; please see solder

package for details. The SchmartBoard uses

lead-free solder and is suggested as the type

to use.

Step 7: Following the schematic, you can

identify each part placement on the board; for

example, C4 is a 1 µF capacitor and R3 is a 10

kresistor. You may notice that there are 2

components for many of the connections; this

is because there are two styles of components

for this kit.

Do not connect both the surface mount

and through-hole components for a

given location, as that will alter the

operation of the whole unit.

A good rule when soldering is start from the

inside and work out, so I am starting wit the 5

MHz crystal and work clock-wise, leaving the

header pieces for last.

Step 8: The next components to put on will

be the capacitors and regulators.

C1 - 10 µF capacitor

C4 - 1 µF capacitor

U3 - 5 V regulator

U4 - 3.3 V regulator

The regulator with “117-5” etched on it is the

5 volt regulator and should be soldered on

U3.

Step 9: Continue soldering on the following

components.

C3 - 10 µF capacitor

C2 - 10 µF capacitor

R1 - 470 resistor

D1 - Red LED

J3 - 2-pin jumper

J1 - power jack

R3 pad for 10 k

through-hole resistor

R3 pad for 10 k

surface mount resistor

Step 10: Add these components:

R3 - 10 kresistor

R2 - 10 kresistor

SW1 - reset switch

J2 - 4-pin programming port header

Step 11: For the next step, choose and add

either female or male headers:

J8, J7, J6, J5 - 10-pin female headers

J8, J7, J6, J5 – 10-pin male headers

If using the male headers, cut the 40-pin SIP

header into 4 equal parts with the wire

cutters and solder them in the same fashion

as shown in the picture; place the shorter side

of header into the PCB for soldering.

Step 12: Carefully clean off any extra flux

that may be on the board and allow to fully

dry before connecting to power or

programming tool.

Step 13: Before proceeding, Make sure you

have installed the Propeller Tool software with

the FTDI USB VCP drivers appropriate for

your operating system:

www.parallax.com/usbdrivers

Using a Prop Plug, connect programming port

to the PC. Then, connect a 6-9 VDC power

supply to the jack.

Step 15: Connect pin 10 of J7 to the anode

(+) of an LED, and pin 1 of J5 to the cathode

(-) of the LED.

Using the reference above, pin 10 on J7 is

connected to I/O pin P23 on the Propeller.

This is information we will use to run a

sample program.

Step 16: Run this test code that blinks the

LED on I/O pin P23 to confirm operation.

Change the Pin constant and circuit to test

the rest of the I/O pins.

'' Title: SchmartBoard Kit Test

'' Author: Parallax Inc.

CON

_clkmode = xtal1 + pll16x 'System clock

_xinfreq = 5_000_000 'set 80 MHz

Pin = 23 'select I/O pin to test

PUB MAIN

dira[Pin]~~ ' Sets Pin as output

outa[Pin]~ ' Sets Pin low

repeat

!outa[Pin] ' Toggles Pin

waitcnt(clkfreq + cnt) ' Wait 1 sec

Pin Definitions and Ratings

Location Name Function

J5, J6, J7, J8 P0 – P31 * Propeller I/O pins able to source / sink 40 mA each at 3.3 VDC

J5, J6, J7, J8 +3.3 VDC Regulated +3.3 VDC able to source up to 400 mA **

J3 +5.0 VDC Regulated +5.0 VDC able to source up to 400 mA **

J3, J5, J6, J7, J8 G Ground

J1 Power Jack 6 to 9 VDC center-positive (2.1 mm) power supply

J2 G, Resn, P31, P30 Programming / Debugging header for Prop Plug

* Pins 28 – 31 have a special purpose upon power-up/reset but are general I/O afterwards.

** Total output of board is 400 mA based on traces and heat dissipation of module.

Additional Resources

Breadboard - 6 7/8” L X 2 9/16” W X 3/8” D #700-00078

Pluggable Wires Male-Female 12.5" - (1 pack of 10) #800-00029

Pluggable Wires Female-Female 12.5" - (1 pack of 5) #27926

Parallax Object Exchange: http://obex.parallax.com

Parallax Forums: http://forums.parallax.com

P31 P30 P29 P28 P27 P26 P25 P24 +3.3V G

+3.3V

G +3.3V P8 P9 P10 P11 P12 P13 P14 P15

P23

P22

P21

P20

P19

P18

P17

P16

+3.3V

G RESn P31 P30

Troubleshooting

There are a handful of things to keep an eye out for while putting this kit together.

1. Before you try to troubleshoot any issues, first clean off all excess flux and any other materials

that might cause a short or other malfunction before powering the module.

Error: “No Propeller Chip Found on COM Ports”

1. Verify that the USB drivers have been successfully installed for the Prop Plug to be used. The

latest driver can be found at www.parallax.com/usbdrivers.

2. Check the connections at J2 to ensure that there is connection with the programming pins.

3. Check continuity between pins I/O pins 30, 31 (on J8) with the RX and TX on the programming

port and ground to the boards ground.

Error: “Could not verify EEPROM”

1. Verify if there is an issue with the EEPROM only, trying to download a program to RAM only (F10

in the Propeller Tool).

2. Check the SMT EEPROM pads to make sure all the legs are touching the pad, and that there are

no solder bridges from leg to leg.

3. Verify that EEPROM pins (5 and 6) have continuity with I/O pins 29 and 28 (on J8).

4. Verify voltage of the power going to the EEPROM; Vdd (pin 8) should be ~3.3 VDC.

For further assistance, contact Parallax Tech Support (support@parallax.com, or call 1-888-997-8267 toll-

free in the Continental US, Monday through Friday from 7 a.m. to 5 p.m. Pacific Time.

D D

C C

B B

A A

27150 A

Propeller_Schmartboard

1 1Thursday, April 30, 2009

Title

SizeDocument Number Rev

Date: Sheet of

PIN_31

PIN_36

PIN_23 PIN_34

PIN_3

PIN_20

PIN_24

PIN_4

3.3V

PIN_25

PIN_9

PIN_31

PIN_15

PIN_2

PIN_35

PIN_4 PIN_19

PIN_38

PIN_10

PIN_28

PIN_11

PIN_10

3.3V

PIN_44

PIN_33

PIN_42 PIN_11

PIN_26

3.3V

PIN_37

PIN_44

PIN_1

3.3V

PIN_34

PIN_15

3.3V

PIN_16

PIN_13

PIN_28

PIN_35

PIN_3

PIN_22

PIN_37

PIN_32

PIN_7

PIN_42

PIN_38

PIN_36

PIN_9

PIN_29

PIN_14

PIN_16

PIN_2

PIN_29

PIN_13

3.3V

PIN_21

PIN_23

PIN_19

PIN_20

PIN_24

PIN_32

PIN_25

PIN_1

PIN_43

PIN_36

PIN_35PIN_26

PIN_21

PIN_37

PIN_43

3.3V

PIN_14

PIN_33

PIN_7

PIN_41

3.3V

PIN_12

PIN_38

PIN_7

PIN_22

PIN_12

10uF

J1 POWER

470

10uF

AT24CXXX

4 5

VSS SDA

SCL

VCC

RED LED

1uF

P8X32A-Q44

VSS

BOEn

RESn

VDD

P10

P11

P12

P13

P14

P15

VSS

VDD

P16

P17

P18

P19

P20

P21

P22

P23

VSS

VDD

P24

P25

P26

P27

P28

P29

P30

P31

VSS

VDD

10K

NCP1117_3.3V

VIN

VOUT

GND

VOUT

SW1

NCP1117_5V

VIN

VOUT

GND

VOUT

10uF

10K

J3 1

Indice

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