Individual Instruction Descriptions

4.14.65 SHL

Shift Left

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Syntax

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

[label]

 

name

 

dest

[, mod]

 

 

 

Clock, clk

 

Word, w

 

 

With RPT, clk

 

 

Class

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SHL

 

An[~] [, next A]

 

 

 

 

 

1

 

 

 

 

1

 

 

 

 

nR+3

 

 

 

 

3

Execution

[premodify AP if mod specified]

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SHL An[~] [, next A]

 

1

1

 

1

0

0

next A

 

An

 

 

1

1

 

1

 

1

1

0

A~

0

Description

Premodify the accumulator pointer if specified. Shift accumulator word left nSV

 

 

 

bits (as specified by the SV register) into a 32-bit result. This 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, PL, is

 

 

 

discarded. The SHL instruction can be used with a RPT instruction, but without

 

 

 

much advantage since the instruction does not write back into the

 

 

 

accumulator. Use SHLAC for this purpose.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

See Also

SHLS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Example 4.14.65.1

SHL A0, ++A

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Preincrement accumulator pointer AP0. Shift accumulator word A0 to the left by SV bits. Accumulator content is not changed. PH contains the upper 16 bits of the shifted result.

4-160

Page 251 Page 253
Page 252
Image 252
Texas Instruments MSP50C614 manual SHL Shift Left, Ph , Pl, Accumulator. Use Shlac for this purpose, Shls, Dest Mod
Page 251 Page 253

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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