Immediate Addressing, Syntax, Example | Texas Instruments MSP50C614

Instruction Syntax and Addressing Modes

4.3.3Immediate Addressing

The address of the memory location is encoded in the instruction word or the word following the opcode is the immediate value. Single word instructions take one clock cycle and double word instructions take two clock cycles.

Syntax:

name dest, [src,] imm [, next A]

Where: imm is the immediate value of a 16 bit number.

Example 4.3.1

ADD AP0, 0x1A

Assume the initial processor state in Table 4±8 before execution of this instruc- tion. This instruction adds the immediate value 0x1A to AP0. Final result AP0 = 0x1A + 2 = 0x1C.

Table 4±8. Initial Processor State for the Examples Before Execution of Instruction

Registers (register# = value)

AP0 = 2	AP1 = 21 (0x15)	AP2 = 11 (0x0B)	AP3 = 29 (0x1D)

R0 = 0x0454	R1 = 0x0200	R2 = 0x0540	R3 = 0x03E2

R4 = 0x0000	R5 = 2	R6 = 0x03E4	R7 = 0x0100

AC2 = 0x13F0	AC1 = 0x0007	AC17 = 0x0112	AC20 = 0x3321

AC3 = 0xFEED	AC28 = 0x11A2	AC29 = 0xAB	AC19 = 0x1200

MR = 0x1A15

data memory (*address = data) [word address; to convert to byte, address multiply by 2]

*0x022A = 0x0400	*0x01F2 = 0x12AC	*0x02A1 = 0x1001	*0x012F = 0x0000

*0x0100 = 0x0ABC	*0x0080 = 0x0000	*0x0001 = 0x499A	*0x01FA = 0x0112

program memory (*address = data)

*0x13F0 = 0x1B12

	Example 4.3.2	MOV R5, 0xF000

Loads the immediate value 0xF000 to R5 register. Final result, R5 = 0xF000.

Example 4.3.3

MOVB MR, 0xF2

Loads the immediate byte 0xf2 to MR register. Final result, MR = 0xf2.

Example 4.3.4

AND A0, A0~, 0xFF20, ±±A

Assume the initial processor state in Table 4±8 before execution of this instruc- tion. The source accumulator pointer AP0 is predecremented. After predecre- ment, A0 points to AC1, and A0~ points to AC17. AC17 is anded with the im- mediate 16 bit value (0xFF20) and the result is stored in AC1. Final result, AP0 = 1, AC1 = 0xFF20 AND AC17 = 0xFF20 AND 0x0112 = 0x0100.

Assembly Language Instructions

4-13

MSP50C614 specifications

The Texas Instruments MSP50C614 is a microcontroller that belongs to the MSP430 family, renowned for its low power consumption and versatile functionality. Primarily designed for embedded applications, this microcontroller is favored in various industries, including consumer electronics, industrial automation, and healthcare devices.

One of the standout features of the MSP50C614 is its ultra-low power technology, which enables it to operate in various power modes. This makes it ideal for battery-powered applications, where energy efficiency is crucial. The MSP430 architecture allows for a flexible power management system, ensuring that energy is conserved while providing robust performance.

The MSP50C614 is equipped with a 16-bit RISC CPU that delivers high performance while maintaining low power usage. With a maximum clock frequency of 16 MHz, it can execute most instructions in a single cycle, resulting in swift operation and responsive performance. This microcontroller also comes with a generous flash memory capacity, allowing developers to store large amounts of code and data conveniently.

In terms of peripherals, the MSP50C614 is highly versatile. It features a range of digital and analog input/output options, including multiple timers, GPIO ports, and various communication interfaces like UART, SPI, and I2C. This extensive set of peripherals allows for seamless integration with other components and simplifies the design of complex systems.

The integrated 12-bit Analog-to-Digital Converter (ADC) stands out as a valuable characteristic of the MSP50C614. This feature enables the microcontroller to convert physical analog signals into digital data, making it particularly useful for sensing applications and real-time monitoring.

Another noteworthy technology employed in the MSP50C614 is its support for low-voltage operations. With a broad supply voltage range, this microcontroller can function efficiently in diverse environments and is suitable for low-power applications, enhancing its practicality.

Moreover, Texas Instruments provides software support in the form of Code Composer Studio and various libraries that make it easier for developers to program and utilize the MSP50C614 effectively.

In summary, the Texas Instruments MSP50C614 microcontroller is a powerful, low-power solution equipped with the features and technologies necessary for efficient operation in a wide array of applications. Its blend of performance, flexibility, and energy efficiency makes it a popular choice among engineers and designers looking to create innovative, sustainable designs in the rapidly evolving tech landscape.

Texas Instruments MSP50C614 manual Immediate Addressing, Syntax, Example

Models: MSP50C614