Texas Instruments MSP430x1xx manual DMAxDA, DMA Destination Address Register

Models: MSP430x1xx

1 432
Download 432 pages 41.81 Kb
Page 191
Image 191

DMAxDA, DMA Destination Address Register

15

14

13

12

11

10

9

8

DMAxDAx

rw

rw

rw

rw

7

6

5

4

rw

rw

rw

rw

3

2

1

0

DMAxDAx

rw

rw

rw

rw

rw

rw

rw

rw

DMAxDAx

Bits

DMA destination address. The destination address register points to the

 

15−0

destination address for single transfers or the first address for block transfers.

 

 

The DMAxDA register remains unchanged during block and burst-block

 

 

transfers.

 

 

 

 

 

DMAxSZ, DMA Size Address Register

15

14

13

12

11

10

9

8

DMAxSZx

rw

rw

rw

rw

7

6

5

4

rw

rw

rw

rw

3

2

1

0

DMAxSZx

rw

rw

rw

rw

rw

rw

rw

rw

DMAxSZx

Bits

DMA size. The DMA size register defines the number of byte/word data per

 

15−0

block transfer. DMAxSZ register decrements with each word or byte transfer.

 

 

When DMAxSZ decrements to 0, it is immediately and automatically reloaded

 

 

with its previously initialized value.

 

 

 

 

 

00000h

Transfer is disabled

 

 

 

 

 

 

00001h

One byte or word is transferred

 

 

 

 

 

00002h

Two bytes or words are transferred

 

 

 

 

:

 

 

 

 

 

 

 

0FFFFh

65535 bytes or words are transferred

 

 

8-23

Page 191
Image 191
Texas Instruments MSP430x1xx manual DMAxDA, DMA Destination Address Register, DMAxSZ, DMA Size Address Register

MSP430x1xx specifications

The Texas Instruments MSP430x1xx series is a family of ultra-low-power microcontrollers that are highly regarded in the embedded systems community for their versatility and performance. Designed for applications ranging from portable instrumentation to low-power industrial devices, the MSP430x1xx combines flexibility and efficiency with advanced features tailored for energy-sensitive applications.

One of the standout characteristics of the MSP430x1xx is its ultra-low-power operation. This series offers several low-power modes that can significantly extend battery life in portable devices. The microcontroller can be in active mode, low-power mode, or even in a deep sleep state, allowing developers to optimize power consumption based on the application's requirements. In fact, some configurations can operate at just a few microamps, making it ideal for battery-operated devices.

Another key feature is the 16-bit RISC architecture that provides powerful processing capabilities while maintaining a low power profile. The MSP430x1xx series supports a maximum clock speed of 16 MHz, allowing for efficient task execution while consuming minimal energy. This architecture ensures that programs run smoothly while the microcontroller remains energy efficient.

The MSP430x1xx is equipped with various integrated peripherals, including analog-to-digital converters (ADCs), timers, and communication interfaces like UART, SPI, and I2C. The inclusion of a powerful ADC enables the microcontroller to handle sensor readings with high accuracy, making it suitable for applications like environmental monitoring and medical devices. The integrated timers provide essential functionality for real-time applications, allowing for event-driven programming and precise timing control.

Memory options in the MSP430x1xx series are also robust, with configurations offering flash memory sizes from 1 KB to 64 KB. This flexibility allows developers to choose the optimal memory size for their specific applications, accommodating a wide range of requirements.

Additionally, the MSP430x1xx microcontrollers are designed with a wide operating voltage range, typically from 1.8V to 3.6V, making them compatible with various power sources and further enhancing their usability in diverse applications.

In summary, the Texas Instruments MSP430x1xx series of microcontrollers is an excellent choice for developers seeking low-power, high-performance solutions for embedded applications. With an efficient architecture, a rich set of peripherals, and flexible memory options, these microcontrollers are positioned to meet the growing demands of modern electronic designs, particularly in battery-powered and energy-sensitive applications.