Ultra Start 16xx Manual de usuario Pagina 14

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MEB/0404
© 2004 Texas Instruments Inc, Slide 14
Modern CPU
Minimum cycles per task
Ultra-low Power MCU Checklist
Multiple operating modes
Instant-on stable high-speed clock
Zero-power BOR
Intelligent peripherals
50nA pin leakage
0.1uA power down
0.8uA standby mode
250uA / 1MIPS @ 3V
The MSP430 is designed specifically for battery-power measurement applications.
•The clock system allows many low-power modes with no compromise in performance.
•Because of a wide operating voltage range, the MSP430 can often be powered directly from a
battery.
•The MSP430 BOR implementation is truly ultra-low power, in the nA range and practical for all
applications. The MSP430 BOR function is so low power that this functions is always active,
even in all low-power modes. This ensures the most reliable performance possible. Competitors
BOR protection is in the uA range and not usable in ultra-low power battery powered
applications, which leave the application vulnerable to BOR conditions.
•The port pins have very low leakage when connected to external inputs. This is very important
as many MCU’s have several uA of leakage on each port pin.
•The overall MSP430 architecture including a 16-bit CPU with 16 registers and 16-bit data and
address buses minimize power consuming fetches to memory. A fast vectored-interrupt structure
reduces the need for wasteful CPU software flag polling.
•Many intelligent hardware peripheral features are provided that allow tasks to be completed
independent of the CPU and far more efficiently. These include the autoscan feature in the
ADC12 and the available DMA. With the intelligent peripherals, the CPU does not need to be
over clocked to deliver the required system performance.
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