28138 Parallax Inc, 28138 Datasheet - Page 10

• 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

RS-232 DCE Port (X13)
The RS-232 DCE port allows your project to communicate with a PC or other DTE devices.
The
implementation of the DCE port on the PDB allows for full flow-control (both transmit and receive). Note
that the pin names refer to function, hence X13-RX will connect to the receive pin (e.g., SERIN) of your
project.
DS1307 Real-Time-Clock (X14)
The DS1307 is a real-time-clock that also contains 56 bytes of battery-backed RAM. Data transfer
2
between the host micro and the DS1307 is with the Philips I
C protocol which is directly supported by the
BS2p-family (with I2CIN and I2COUT), as well as the SX/B compiler (with I2CSTART, I2CSEND,
2
I2CRECV, and I2CSTOP). For other BASIC Stamp 2 members as well as the Javelin Stamp, I
C routines
can be synthesized using other instructions.
In addition to the SDA (serial data) and SCL (serial clock) connections, the SQW (programmable square
wave output) is provided at X14.
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© Parallax, Inc. • Professional Development Board (#28138) • 06/2005