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TI microcontroller draws 0.75A

Posted: 29 Jul 2002 ?? ?Print Version ?Bookmark and Share

Keywords:texas instruments? msp430? msp430c1101? microcontroller unit? mcu?

The MSP430C1101 microcontroller unit from Texas Instruments Inc. is claimed by the company to be the world's lowest power MCU, drawing 1.35A during operation and 0.75A during standby mode.

Fully-compatible with the company's existing MSP430 devices, the MSP430C1101 includes 1kB of ROM, 128 bytes of RAM, a watchdog timer, three-channel multi-function 16-bit PWM Timer A and an analog comparator that supports high-precision ADC for cost-sensitive applications. It operates from a 1.8V to 3.6V supply range.

The MCU also eliminates the need for software intensive polling by offering vectored interrupt capability on every I/O pin and with every peripheral supporting sophisticated event- driven operation.

For high-performance applications, an integrated digitally-controlled oscillator or external high-speed crystal can be used to clock the system at 1605A/MIPS. For very cost sensitive applications the device can operate from the DCO with no external components.

In addition, fast instruction execution coupled with the MSP430's start-up from standby in <65s is claimed by the company to result in a total power consumption up to 10 times lower than competing devices, dramatically extending battery life in applications such as utility metering, portable instrumentation and intelligent sensing.

As with the other MSP430 devices, the MSP430C1101 is based on an orthogonal 16-bit true-RISC CPU core with 16 fully addressable single-cycle 16-bit CPU registers, 27 instructions, and seven consistent addressing modes that use double data fetch technology (DDFT).

TI claims that DDFT accesses memory twice with each clock pulse, eliminating the need for complex clock multiplying and instruction pipelining schemes.

For development, the Flash Emulation Tool (FET) MSP-FET430X110 is available. The FET supports real-time in-system development accessing the Flash devices embedded emulation capability. It comes complete with a JTAG interface target board and Flash devices as well as a complete IDE including a debugger, assembler/linker, and 4kB IAR C-Compiler.

The MSP439C1101 is priced at 49 cents in lots of 100,000.

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