PBASIC2SX-28/SS Parallax Inc, PBASIC2SX-28/SS Datasheet

PBASIC2SX-28/SS

Manufacturer Part Number

PBASIC2SX-28/SS

Description

BASIC STAMP 2SX INTERPRETER CHIP

Manufacturer

Parallax Inc

Datasheet

1.PBASIC2SX-28SS.pdf (2 pages)

Specifications of PBASIC2SX-28/SS

Program Memory Type

EEPROM

Operating Supply Voltage

3 V to 5 V

Maximum Operating Temperature

+ 85 C

Mounting Style

SMD/SMT

Package / Case

QFP-28

For Use With

28803 - KIT BOARD OF EDU W/O PWR SUPP28300 - MOTHERBOARD BASIC STAMP 2PE28150 - BOARD OF EDUCATION28103 - KIT FULL BOARD OF EDUCATION

Lead Free Status / Rohs Status

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BASIC Stamp

(for Interpreter Chip Users)

This document contains details of revisions made to the BASIC Stamp 2sx interpreter chip firmware

as well as the BASIC Stamp 2sx module. This information is intended only for use by customers who

purchase the BS2sx interpreter chips and embed the BASIC Stamp 2sx circuit into their designs.

If you use BASIC Stamp 2sx modules (as opposed to interpreter chips) then you can safely ignore this

information.

As of July 2007, Parallax, Inc. has modified the firmware in the BASIC Stamp 2sx interpreter chip in a

way that increases reliability, but requires an electrical change on the PCB that the interpreter is used

on. Parallax has already made the necessary changes to the new BASIC Stamp 2sx modules that are

produced, however, if you use the individual interpreter chips, instead of the modules, your embedded

circuit will need to be modified in a similar way.

BS2sx Details (interpreter chip changes, software and BS2sx module changes):

The schematic on the following page shows the current design in use, as described above. Please

review it to aid in adjusting your BS2sx embedded designs.

If you have any further questions regarding this matter, please contact us and we will answer them

promptly.

Interpreter chip firmware updated to v1.3.

EEPROM changed to a Microchip 24FC128I. The previous EEPROM (Catalyst 24WC128J)

has been discontinued by the manufacturer. This change is independent of the firmware

update; if you have a supply of EEPROMS that you've successfully used in previous builds,

there is no need to change it. NOTICE: The Catalyst 24C128WI is not recommended for use

in the BS2sx circuit.

The 50 MHz resonator has been replaced with a RoHS compliant, industrial, resonator.

Disabled internal interpreter brown-out detector. This change requires that, instead, an

external brown-out detector be included in the circuit for proper operation.

BASIC Stamp Editor v2.3.1 (or above) supports this new firmware version.

A 10 K Ohm feedback resistor across the XI/XO pins of the resonator is used to

optimize oscillation across the industrial temperature range.

2sx Change Notice

599 Menlo Drive, Suite 100

Rocklin, California 95765, USA

Office: (916) 624-8333

Fax: (916) 624-8003

2sx Change Notice for Interpreter Chip Users • 07/2007

General: info@parallax.com

Technical: support@parallax.com

Web Site: www.parallax.com

Educational: www.stampsinclass.com

Related parts for PBASIC2SX-28/SS

PBASIC2SX-28/SS Summary of contents

Page 1

BASIC Stamp 2sx Change Notice (for Interpreter Chip Users) This document contains details of revisions made to the BASIC Stamp 2sx interpreter chip firmware as well as the BASIC Stamp 2sx module. This information is intended only for use ...

Page 2

BASIC Stamp BS2sx-IC Module Schematic Dual NPN Trans. Pack W (10 k Res. & 2N3904) SOUT 1 SIN 2 ATN 3 VSS Connect ...

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