±16. Class 2 Instruction Encoding | Texas Instruments MSP50C614

Instruction Classification

constants. Long constants (16 bits) and long string constants differ in that ref- erences are made to constants in the second word of the two-word instruction word. References made to a single 16 bit integer constant are immediate. That is, the actual constant value follows the first word opcode in memory. For string constants, the second word reference to the constants is immediate-indirect which indicates that the second word is the address of the least significant word of the string constant. This definition allows all long string constants to be located in a table and permits the reference in the machine language listing to be consistent with those of shorter constants.

Table 4±16. Class 2 Instruction Encoding

Bit	16	15	14	13	12	11	10	9		8	7	6	5	4	3	2	1	0

Class 2a	1	0	1	0		C2a			An					imm8

Class 2b	1	1	1	0	0	next A			An			C2b		0	0	1	A~	~A

Table 4±17. Class 2a Instruction Description

	C2a		Mnemonic	Description

0	0	0	ADDB An, imm8	Add an 8 bit positive constant to the accumulator and store the result in the
				accumulator. ALU status is modified.

0	0	1	MOVB An, imm8	Load an 8 bit positive constant into accumulator. ALU status is modified.

0	1	0	SUBB An, imm8	Subtract 8 bit positive constant from accumulator and store result
				accumulator. ALU status modified.

0	1	1	CMPB An, imm8	Modify ALU status with the result of 8 bit positive value subtracted from
				accumulator. Original accumulator value not modified.

1	0	0	ORB An, imm8	Logical OR 8 bit positive constant with accumulator and store result to
				accumulator. ALU status modified.

1	0	1	ANDB An, imm8	Logical AND 8 bit positive constant with accumulator. Store result to
				accumulator. ALU status modified.

1	1	0	XORB An, imm8	Logical XOR 8 bit positive constant with accumulator. Store result to
				accumulator. ALU status modified.

1	1	1	MOVB MR, imm8	Load 8 bit constant to Multiplier register (MR). Does not change UM mode in
				status register but will zero fill the top 8 bits in MR register. No change in status.

Assembly Language Instructions

4-29

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 ±16. Class 2 Instruction Encoding, C2a Mnemonic Description

Models: MSP50C614

Instruction Classification

Table 4±16. Class 2 Instruction Encoding

Bit

Table 4±17. Class 2a Instruction Description

C2a

Mnemonic

Description

Assembly Language Instructions

MSP50C614 specifications