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Texas Instruments MSP50C614 manual Data Memory Addressing Modes

Models: MSP50C614

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Data Memory Address Unit

There are two-byte instructions, for example MOVB, which cause the proces- sor to read or write data in a byte (8-bit) format. (The B appearing at the end of MOVB designates it as an instruction, which uses byte-addressable argu- ments.) The byte-addressable mode causes the hardware to read/write either the upper or lower 8 bits of the 16-bit word based on the LSB of the address. In this case, the address is a byte address, rather than a word address. Bits 0 through 7 within the word are used, so that a single byte is automatically right- justified within the databus. Bits 8 through 15 may also be accessed as the up- per byte at that same address.

A third data-addressing mode is the flag data mode, whereby, the instruction operates on only the single flag bit (bit 16) at a given address. All flag mode instructions execute in one instruction cycle. The flags can be referenced in one of two addressing modes: 1) global address, whereby 64 global flags are located at fixed locations in the first 64 RAM addresses, and 2) flag relative address, whereby a reference is made relative to the current PAGE (R6). The relative address supports 64 different flags whose PAGE-offset values are stored in the PAGE register. The flag mode instructions cannot address memory in the INDEX-relative modes. See Chapter 4, Instructions, for more details.

2.3.2Data Memory Addressing Modes

The DMAU provides a powerful set of addressing modes to enhance the per- formance and flexibility of the C614 core processor. The addressing modes for RAM fall into three categories:

-Direct addressing

-Indirect addressing with post-modification

-Relative addressing

The relative addressing modes appear in three varieties:

-Immediate Short, relative to the PAGE (R6) register.

The effective RAM address is: [*R6 + (a 7 bit direct offset)].

-Relative to the INDEX (R5) register.

The effective RAM address is: [*R5 + (an indexed offset)].

-Long Immediate, relative to the register base.

The effective RAM address is: [*Rx + (a 16 bit direct offset)].

Refer to Chapter 4, Instructions, for a full description of how these modes are used in conjunction with various instructions.

MSP50C614 Architecture

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Texas Instruments MSP50C614 manual Data Memory Addressing Modes
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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.