Indexed Mode | Texas Instruments MSP430x1xx specification

Addressing Modes

3.3.2Indexed Mode

The indexed mode is described in Table 3−5.

Table 3−5. Indexed Mode Description

Assembler Code		Content of ROM
MOV	2(R5),6(R6)	MOV X(R5),Y(R6)
		X = 2
		Y = 6
Length:	Two or three words
Operation:	Move the contents of the source address (contents of R5 + 2)
	to the destination address (contents of R6 + 6). The source
	and destination registers (R5 and R6) are not affected. In
	indexed mode, the program counter is incremented
	automatically so that program execution continues with the
	next instruction.
Comment:	Valid for source and destination
Example:	MOV 2(R5),6(R6);

Before:	Address		Register
	Address		Register
	Space
0FF16h

	00006h	R5		01080h

0FF14h	00002h	R6		0108Ch

0FF12h	04596h	PC
				0108Ch



01094h	0xxxxh			+0006h
				01092h
01092h	05555h			01092h
01092h	05555h

01090h	0xxxxh
				01080h



01084h	0xxxxh			+0002h
				01082h
01082h	01234h			01082h
01082h	01234h

01080h	0xxxxh

After:	Address		Register
	Address		Register
	Space
0FF16h	0xxxxh	PC
	0xxxxh	PC

	00006h	R5		01080h

0FF14h	00002h	R6		0108Ch

0FF12h	04596h




01094h	0xxxxh

01092h	01234h

01090h	0xxxxh
01084h



	0xxxxh

01082h	01234h

01080h	0xxxxh

RISC 16-Bit CPU

3-11

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 5. Indexed Mode Description

Models: MSP430x1xx

3.3.2Indexed Mode

Table 3−5. Indexed Mode Description

Assembler Code

MOV 2(R5),6(R6);

MSP430x1xx specifications