Individual Instruction Descriptions

4.14.70 SHLS

 

Shift Left Accumulator String to Product

 

 

 

 

 

 

 

 

 

Syntax

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

[label]

 

name

 

dest

 

 

 

 

 

Clock, clk

Word, w

 

 

With RPT, clk

 

Class

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SHLS

 

An[~]

 

 

 

 

 

 

nS+3

 

 

1

 

 

 

 

nR+3

 

 

 

 

3

Execution

PH, PL ⇐

src

<<

SV

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PC ⇐ PC + 1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Flags Affected

OF, SF, ZF, CF are set accordingly

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Opcode

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Instructions

 

16

15

14

13

12

11

10

9

 

8

7

6

 

5

 

4

3

 

2

 

1

0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SHLS An[~]

 

1

1

1

0

0

1

1

An

 

1

1

 

1

 

1

1

 

0

 

A~

0

Description

Shift accumulator string value left nSV bits (as specified by the SV register) into

 

 

 

a ((nS + 2) x 16) -bit result. The result is zero-filled or sign-extended on the left

 

 

 

(based on the setting of the extended sign mode (XM) bit in the status register).

 

 

 

The upper 16 bits are latched into the PH register. Accumulator content is not

 

 

 

changed. The lower 16-bit value is discarded. SHLS instruction can be used

 

 

 

with RPT instructions, but the string length used will be nS + 2.

 

 

 

 

 

See Also

SHLS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Example 4.14.70.1

SHLS A0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Shift accumulator string A0 to the left. Accumulator content is not changed. PH contains the upper 16 bits of the shifted result.

Assembly Language Instructions

4-165

Page 256 Page 258
Page 257
Image 257
Texas Instruments MSP50C614 manual Shls Shift Left Accumulator String to Product, Execution PH, PL, An~
Page 256 Page 258

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.
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