1. DMA Controller Block Diagram | Texas Instruments MSP430x1xx

Figure 8−1. DMA Controller Block Diagram

DMA0TSELx


		4
DMAREQ	0000

TACCR2_CCIFG	0001

TBCCR2_CCIFG	0010

USART0 data received	0011

USART0 transmit ready	0100

DAC12_0IFG	0101

ADC12IFGx	0110

TACCR0_CCIFG	0111

TBCCR0_CCIFG	1000

USART1 data received	1001

USART1 transmit ready	1010

Multiplier ready	1011

No trigger	−−−
No trigger

DMA2IFG	1110

DMAE0	1111

DMA1TSELx
		4

DMAREQ	0000

TACCR2_CCIFG	0001

TBCCR2_CCIFG	0010

USART0 data received	0011

USART0 transmit ready	0100

DAC12_0IFG	0101

ADC12IFGx	0110

TACCR0_CCIFG	0111


TBCCR0_CCIFG	1000

USART1 data received	1001

USART1 transmit ready	1010

Multiplier ready	1011

No trigger	−−−
No trigger

DMA0IFG	1110

DMAE0	1111

DMA2TSELx
		4

DMAREQ	0000

TACCR2_CCIFG	0001

TBCCR2_CCIFG	0010

USART0 data received	0011

USART0 transmit ready	0100

DAC12_0IFG	0101

ADC12IFGx	0110

TACCR0_CCIFG	0111

TBCCR0_CCIFG	1000

USART1 data received	1001

USART1 transmit ready	1010

Multiplier ready	1011

No trigger	−−−
No trigger

DMA1IFG	1110

DMAE0	1111

JTAG Active

Halt			NMI Interrupt Request
Halt	ROUNDROBIN		ENNMI
	ROUNDROBIN
		DMADSTINCRx	DMADTx
	2	DMADSTBYTE	3
	2		3
		DMA Channel 0
		DMA0SA
		DMA0DA
		DMA0SZ
	2	DMASRSBYTE
		DMASRSBYTE
		DMASRCINCRx	DMAEN
		DMADSTINCRx DMADTx
	2	DMADSTBYTE	3
DMA	2		3
		DMA Channel 1

Priority		DMA1SA
Priority		DMA1DA	Address
And			Address
			Space
			Space

Control		DMA1SZ
Control	2	DMASRSBYTE
	2

		DMASRCINCRx	DMAEN
		DMADSTINCRx DMADTx
	2	DMADSTBYTE	3
	2		3
		DMA Channel 2
		DMA2SA
		DMA2DA
		DMA2SZ
	2	DMASRSBYTE
		DMASRSBYTE
		DMASRCINCRx	DMAEN
	DMAONFETCH
		Halt CPU

8-3

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.

Texas Instruments MSP430x1xx manual 1. DMA Controller Block Diagram

Models: MSP430x1xx

Figure 8−1. DMA Controller Block Diagram

TBCCR0_CCIFG

MSP430x1xx specifications