Shift and Rotate Operations | Motorola MC68340 specification

Freescale Semiconductor, Inc.

Table 5-7. Shift and Rotate Operations

Semiconductor, Inc...

	Operand
Instruction	Syntax	Operand Size
ASL	Dn, Dn	8, 16, 32
	#〈data〉, Dn	8, 16, 32
	〈ea〉	16
ASR	Dn, Dn	8, 16, 32
	#〈data〉, Dn	8, 16, 32
	〈ea〉	16
LSL	Dn, Dn	8, 16, 32
	#〈data〉, Dn	8, 16, 32
	〈ea〉	16
LSR	Dn, Dn	8, 16, 32
	#〈data〉, Dn	8, 16, 32
	〈ea〉	16
ROL	Dn, Dn	8, 16, 32
	#〈data〉, Dn	8, 16, 32
	〈ea〉	16
ROR	Dn, Dn	8, 16, 32
	#〈data〉, Dn	8, 16, 32
	〈ea〉	16
ROXL	Dn, Dn	8, 16, 32
	#〈data〉, Dn	8, 16, 32
	〈ea〉	16
ROXR	Dn, Dn	8, 16, 32
	#〈data〉, Dn	8, 16, 32
	〈ea〉	16
SWAP	Dn	16

Operation

X/C 0

X/C

0 X/C

C	X
X	C
MSW	LSW

Freescale

5.3.3.6BIT MANIPULATION INSTRUCTIONS. Bit manipulation operations are accomplished using the following instructions: bit test (BTST), bit test and set (BSET), bit test and clear (BCLR), and bit test and change (BCHG). All bit manipulation operations can be performed on either registers or memory. The bit number is specified as immediate data or in a data register. Register operands are 32 bits long, and memory operands are 8 bits long. Table 5-8 is a summary of bit manipulation instructions.

Table 5-8. Bit Manipulation Operations

	Operand
Instruction	Syntax	Operand Size	Operation
BCHG	Dn, 〈ea〉	8, 32	~(〈bit number 〉 of destination) ⇒ Z ⇒ bit of
	#〈data〉, 〈 ea〉	8, 32	destination
BCLR	Dn, 〈ea〉	8, 32	~(〈bit number 〉 of destination) ⇒ Z; 0 ⇒ bit of
	#〈data〉, 〈 ea〉	8, 32	destination
BSET	Dn, 〈ea〉	8, 32	~(〈bit number 〉 of destination) ⇒ Z; 1 ⇒ bit of
	#〈data〉, 〈 ea〉	8, 32	destination
BTST	Dn, 〈ea〉	8, 32	~(〈 bit number 〉 of destination) ⇒ Z
	#〈data〉, 〈 ea〉	8, 32

MOTOROLAMC68340 USER’S MANUAL5- 25

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MC68340 specifications

The Motorola MC68340 is a highly integrated microprocessor that was introduced in the early 1990s. It belongs to the 68000 family of microprocessors and is designed to cater to the demands of embedded systems, particularly in telecommunications and networking applications. This chip represents a significant evolution in microprocessor technology by combining a microprocessor core with additional peripherals on a single chip, making it an attractive solution for engineers looking to design compact and efficient systems.

One of the key features of the MC68340 is its 32-bit architecture, which allows for significant processing power and data handling capabilities. This architecture enables the processor to handle larger data sizes and perform more complex calculations compared to its 16-bit predecessors. The MC68340 operates at clock speeds typically ranging from 16 MHz to 25 MHz. Its dual instruction pipeline enhances throughput, allowing for simultaneous instruction fetches and executions, which significantly boosts performance.

A notable characteristic of the MC68340 is the inclusion of integrated peripherals, which help reduce the overall component count in a system. Key integrated components include a memory management unit (MMU), a direct memory access (DMA) controller, and various communication interfaces such as serial ports. The memory management capabilities enhance the processor's ability to manage memory resources efficiently, enabling it to support multitasking environments commonly found in modern computing.

In terms of connectivity, the MC68340 features connections for both synchronous and asynchronous serial communication, making it well-suited for networking tasks. The processor supports a range of bus standards, including address and data buses, which facilitate seamless interaction with peripheral devices.

Another important aspect of the MC68340 is its flexibility. The processor supports multiple operating modes, including multiple CPU configurations and compatibility with the Motorola 68000 family, allowing for easier integration into existing systems.

Moreover, the MC68340 boasts low power consumption compared to many of its contemporaries, making it an excellent choice for battery-operated applications, enhancing its appeal in sectors like telecommunications, industrial control, and automotive systems. Its combination of performance, integration, versatility, and efficiency has secured the MC68340 a reputable position in the annals of embedded systems technology, proving to be a valuable asset for developers and engineers alike.

Motorola MC68340 manual Shift and Rotate Operations, Bit Manipulation Operations

Models: MC68340