If you have put off taking a look at the MSP430 family of 16-bit MCUs from Texas Instruments, you can jump in for under five dollars. The new MSP430 MCU Value Line LaunchPad kit sells for $US 4.30 and the cost includes shipping (for a limited time). The small board provides an "emulation" section that communicates from software tools on a host PC with an MSP430 MCU chip in the MSP-EXP430G2 section of the board. The latter section provides a 20-pin DIP socket so you can plug in many types of MSP430 Value Line processors. The processors start at $US 0.25 each in large quantities.(You can program any MSP430 Value Line MCU on this board. And you can program any Spy Bi-Wire-enabled MSP430 device as well as any eZ430 target board. A 10-pin JTAG header provides the programming connection to external boards.)
The inexpensive kit includes two MCUs--an MSP430G2211 and an MSP430G2231--that you can plug into the 20-pin socket to program and debug your code. Each chip has 128 bytes of RAM and 2048 bytes of flash memory. The two MCUs both have 10 general-purpose I/O lines, a watch-dog timer and brown-out regulator. The 2211 also includes a comparator. The 2231 has an SPI or I2C communication port and an 8-channel 10-bit analog-to-digital converter.
So, you can't use these chips to control an ATM or large LED sign. But they'll handle alarms, game controls, sensors, small consumer devices, electronic locks, light control, and similar applications that don't require a lot of code.
The board breaks out all of the processor pins and it comes with male and female headers so you can decide which type to solder onto the board. For more information, including production-ready open source projects, visit www.ti.com/launchpadwiki-pr. You can download unrestricted versions of the TI Code Composer Studio (version 4) and the IAR Systems Embedded Workbench.
For more information, visit:
LaunchPad tool folder: www.ti.com/launchpad-pr
MSP430 MCU Value Line: www.ti.com/launchpad_value-pr
TI eStore: www.ti.com/launchpad-pr-es
Jon Titus
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