BASIC stamp manual v2.2

Introduction to the BASIC Stamp
Page 8 • BASIC Stamp Syntax and Reference Manual 2.2 • www.parallax.com
BASIC Stamp Model Comparison Table
Products
BS1 BS2 BS2e
Environment
0º - 70º C
(32º - 158º F) **
0º - 70º C (32º - 158º F) ** 0º - 70º C (32º - 158º F) **
Microcontroller
Microchip PIC16C56a Microchip PIC16C57c Ubicom SX28AC
Processor Speed
4 MHz 20 MHz 20 MHz
Program Execution Speed
~2,000 instructions/sec.
~4,000
instructions/sec
~4,000 instructions/sec
RAM Size
16 Bytes (2 I/O, 14 Variable)
32 Bytes
(6 I/O, 26 Variable)
32 Bytes (6 I/O, 26 Variable)
Scratch PadRam
N/A N/A 64 Bytes
EEPROM (Program) Size
256 Bytes,
~80 instructions
2K Bytes,
~500 instructions
8 x 2K Bytes,
~4,000 inst
Number of I/O Pins
8 16 + 2 Dedicated Serial 16 + 2 Dedicated Serial
Voltage Requirements
5 - 15 vdc 5 - 15 vdc 5 - 12 vdc
Current Draw@ 5 volts
1 mA Run,
25 µA Sleep
3 mA Run,
50 µA Sleep
25 mA Run,
200 µA Sleep
Source/Sink Current per I/O
20 mA / 25 mA 20 mA / 25 mA 30 mA / 30 mA
Source/Sink
Current per unit
40 mA / 50 mA
40 mA / 50 mA
per 8 I/O pins
60 mA / 60 mA
per 8 I/O pins
PBASIC Commands*
32 42 45
PC Interface
Serial
(w/BS1 Serial Adapter)
Serial
(9600 baud)
Serial (9600 baud)
Windows Text Editor
Version
Stampw.exe (v2.1 and up) Stampw.exe (v1.04 and up)
Stampw.exe
(v1.096 and up)
* PBASIC Command count totals include PBASIC 2.5 commands on all BS2 models.
** See below for industrial rated module information.
Industrial-Rated BASIC Stamp Modules
Some BASIC Stamp models come in Industrial-rated versions, with an
environmental temperature tolerance range of -40°C to +85°C . Contact
the Parallax Sales Team directly for the latest information regarding
industrial-rated product availability and specifications.