Specifications

BASIC Stamp II
Page 212 • BASIC Stamp Programming Manual 1.8 • Parallax, Inc.
PC-to-BS2 Connector Hookup
Figure H-2 shows how a DB9 programming connector for the BS2 is
wired. This connector allows the PC to reset the BS2 for programming,
download programs, and receive Debug data from the BS2. An addi-
tional pair of connections, pins 6 and 7 of the DB9 socket, lets the
STAMP2 host software identify the port to which the BS2 is connected.
If you plan to construct your own carrier board or make temporary
programming connections to a BS2 on a prototyping board, use this
drawing as a guide. If you also want to use this host interface connec-
tion to communicate between the BS2 and other PC programs, see the
writeup in the Serin listing for suggestions.
Figure H-2
12345
67 8 9
Rx
Tx
DTR
GND
DSR RTS
SOUT (1)
SIN (2)
ATN (3)
VSS (4)
BS2 Pin (#)