Parallax BASIC Stamp 2e Programming Manual page 11

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Table 1.1: BASIC Stamp 1 Pin
Descriptions.
1: Introduction to the BASIC Stamps
The BASIC Stamp 1 is available in the above three physical packages. The
BASIC Stamp 1 Rev. D (simply called the Rev. D), see Figure 1.1, includes
prototyping area suitable for soldering electronic components. The BS1-IC
(Figure 1.2) uses surface mount components to fit in a small 14-pin SIP
package.
The OEMBS1 (Figure 1.3) features an easier-to-trace layout
meant to aid customers who wish to integrate the BASIC Stamp 1 circuit
directly into their design (as a lower-cost solution).
available in either an assembled form or a kit form. All three packages are
functionally equivalent with the exception that the Rev. D does not have
an available reset pin.
Pin
Name
1
VIN
2
VSS
3
PCO
4
PCI
5
VDD
6
RES
7-14
P0-P7
See the "BASIC Stamp Programming Connections" section, below, for
more information on the required programming connections between the
PC and the BASIC Stamp.
BASIC Stamp Programming Manual 2.0c • www.parallaxinc.com • Page 9
Description
Unregulated power in: accepts 5.5 - 15 VDC (6-40 VDC on
BS1-IC rev. b), which is then internally regulated to 5 volts. May
be left unconnected if 5 volts is applied to the VDD (+5V) pin.
System ground: connects to PC parallel port pin 25 (GND) for
programming.
PC Out: connects to PC parallel port pin 11 (BUSY) for
programming.
PC In: connects to PC parallel port pin 2 (D0) for programming.
5-volt DC input/output: (Also called +5V) if an unregulated voltage
is applied to the VIN pin, then this pin will output 5 volts. If no
voltage is applied to the VIN pin, then a regulated voltage
between 4.5V and 5.5V should be applied to this pin.
Reset input/output: goes low when power supply is less than
approximately 4.2 volts, causing the BASIC Stamp to reset. Can
be driven low to force a reset. This pin is internally pulled high
and may be left disconnected if not needed. Do not drive high.
General-purpose I/O pins: each can sink 25 mA and source 20
mA. However, the total of all pins should not exceed 50 mA (sink)
and 40 mA (source).
The OEMBS1 is

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