Indirect Register Mode | Texas Instruments MSP430x1xx manual

Addressing Modes

3.3.5Indirect Register Mode

The indirect register mode is described in Table 3−8.

Table 3−8. Indirect Mode Description

Assembler Code		Content of ROM
MOV	@R10,0(R11)	MOV @R10,0(R11)
Length:	One or two words
Operation:	Move the contents of the source address (contents of R10) to
	the destination address (contents of R11). The registers are
	not modified.
Comment:	Valid only for source operand. The substitute for destination
	operand is 0(Rd).
Example:	MOV.B @R10,0(R11)

Before:

Address

Space

0xxxxh

0FF16h

0000h

0FF14h 04AEBh

0FF12h 0xxxxh

0FA34h 0xxxxh

0FA32h 05BC1h

0FA30h 0xxxxh

R10 0FA33h

PC R11 002A7h

After:	Address		Register
	Address		Register
	Space
0FF16h	0xxxxh	PC
	0xxxxh	PC
	0000h	R10		0FA33h

0FF14h	04AEBh	R11		002A7h

0FF12h	0xxxxh




0FA34h	0xxxxh

0FA32h	05BC1h

0FA30h	0xxxxh

002A8h
002A8h	0xxh
002A7h
002A7h	012h

002A6h	0xxh

002A8h
002A8h	0xxh

002A7h	05Bh

002A6h	0xxh

3-14RISC 16-Bit CPU

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 Indirect Register Mode, 8. Indirect Mode Description

Models: MSP430x1xx

3.3.5Indirect Register Mode

Table 3−8. Indirect Mode Description

Assembler Code

MOV.B @R10,0(R11)

MSP430x1xx specifications