28138 Parallax Inc, 28138 Datasheet - Page 3

• Manufacturer Part Number: 28138
• Description: BOARD DEV PROFESSIONAL
• Manufacturer: Parallax Inc
• Series: BASIC Stamp®r
• Type: MCUr

Specifications of 28138

• Contents: Development Board
• Processor To Be Evaluated: SX28AC/DP
• Interface Type: RS-232
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: BASIC Stamp®, Javelin Stamp, and SX28AC/DP
• For Use With: 900-00014 - SERVO CONTROLLER PICO GWS130-28029 - KIT PARTS SMART SENSORS27957 - MANUAL USER FOR JAVELIN STAMP28138 - BOARD DEV PROFESSIONAL805-00006 - CABLE USB A TO MINI B27937 - MEMORY STICK DATALOGGER658-1021-5 - PROGRAMMER TEACLIPPER/STAMP30010 - BASIC STAMP LOGIC ANALYZER27220 - BOOK STAMPWORKS27330 - PROGRAMMER STACHE BASIC STAMP27218 - MANUAL BASIC STAMP VER 2.0
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Questions & Answers
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Copyright © Parallax, Inc.
Does the PDB replace the NX-1000 boards?
Yes; all the most popular features of the previous NX-1000s – plus more – have been
incorporated into the PDB at a lower cost.
I’m kind of new … can I harm my BASIC Stamp or the PDB by making a wiring or programming
mistake?
The truthful answer is Yes, however, the PDB has been designed with inline resistors connected
to those points where a wiring or programming mistake would normally cause damage. If you’re
new, go slowly and double-check your connections before moving the power switch to ON.
Where do I get technical information on the components used?
You can find technical information on BASIC Stamp, Javelin Stamp, and SX28AC/DP
microcontrollers at www.parallax.com. For other components (i.e., L293D, MAX232E, etc.), an
Internet search (try www.google.com) will help you locate the latest technical information and
application notes from the manufactures of those components.
Can I use PDB to run the StampWorks experiments?
Yes. StampWorks v2.1 was written for the PDB. Most experiments from StampWorks v1.2 and
earlier can also be run on the PDB.
I want to experiment with Dallas/Maxim iButton
You’ll need a "Blue Dot Receptor" cable.
Can I use the PDB to develop BS1 projects?
Yes!
Do I need the BS1 Serial Adapter to program the BS1-IC?
Yes, there is a separate programming header used to program the BS1-IC.
Can I use the PDB for Javelin Stamp projects?
Yes, the PDB is an excellent development platform for the Javelin Stamp.
Since the SX28AC/DP has its own socket, can I have it installed when I’m using a BASIC Stamp
or Javelin Stamp microcontroller?
Yes – except when using the BS2p40 which uses the SX’s RB and RC connectors for some pins.
What is the VIN terminal, and how do I use it?
The VIN terminal is the input voltage to the PDB (usually 12 volts). This can be used to provide a
high-voltage common for devices like stepper motors that are controlled via the L293D push-pull
driver.
CAUTION: Do not connect any VIN terminal directly to any pin of the BASIC Stamp, Javelin
Stamp, or SX28AC/DP module; doing so will cause damage to or destroy the module. And do
not connect VIN to any of the VDD or VSS terminals as this may damage the voltage
regulator of the PDB.
The purpose of the VIN terminal is to provide +12 volts (the typical input voltage to the PDB)
to external devices like relays, incandescent lamps, and stepper motors that are control via
the L293D push-pull driver.
Professional Development Board (#28138)
®
products; is there anything else I’ll need?
v2.0 9/3/2008 Page 3 of 10