Motorola MC68340 manual SIM40 Programming Model

Models: MC68340

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ADDR

FC

15

8 7

0

 

000

S

MODULE CONFIGURATION REGISTER (MCR)

 

SYSTEM

 

 

 

 

 

PROTECTION

004

S

CLOCK SYNTHESIZER CONTROL REGISTER (SYNCR)

 

CLOCK

006

S

AUTOVECTOR REGISTER (AVR)

RESET STATUS REGISTER (RSR)

 

SYSTEM

 

 

 

 

 

PROTECTION

010

S/U

RESERVED

PORT A DATA (PORTA)

 

EBI

012

S/U

RESERVED

PORT A DATA DIRECTION (DDRA)

 

EBI

014

S

RESERVED

PORT A PIN ASSIGNMENT 1 (PPRA1)

EBI

016

S

RESERVED

PORT A PIN ASSIGNMENT 2 (PPRA2)

EBI

018

S/U

RESERVED

PORT B DATA (PORTB)

 

EBI

01A

S/U

RESERVED

PORT B DATA (PORTB1)

 

EBI

01C

S/U

RESERVED

PORT B DATA DIRECTION (DDRB)

 

EBI

01E

S

RESERVED

PORT B PIN ASSIGNMENT (PPARB)

EBI

020

S

SW INTERRUPT VECTOR (SWIV)

SYSTEM PROTECTION CONTROL

 

SYSTEM

 

 

 

(SYPCR)

 

PROTECTION

 

 

 

 

 

022

S

PERIODIC INTERRUPT CONTROL REGISTER (PICR)

 

SYSTEM

 

 

 

 

 

PROTECTION

024

S

PERIODIC INTERRUPT TIMING REGISTER (PITR)

 

SYSTEM

 

 

 

 

 

PROTECTION

026

S

RESERVED

SOFTWARE SERVICE (SWSR)

 

SYSTEM

 

 

 

 

 

PROTECTION

040

S

ADDRESS MASK 1 CS0

 

CHIP SELECT

042

S

ADDRESS MASK 2 CS0

 

CHIP SELECT

044

S

BASE ADDRESS 1 CS0

 

CHIP SELECT

046

S

BASE ADDRESS 2 CS0

 

CHIP SELECT

048

S

ADDRESS MASK 1 CS1

 

CHIP SELECT

04A

S

ADDRESS MASK 2 CS1

 

CHIP SELECT

04C

S

BASE ADDRESS 1 CS1

 

CHIP SELECT

04E

S

BASE ADDRESS 2 CS1

 

CHIP SELECT

050

S

ADDRESS MASK 1 CS2

 

CHIP SELECT

052

S

ADDRESS MASK 2 CS2

 

CHIP SELECT

054

S

BASE ADDRESS 1 CS2

 

CHIP SELECT

056

S

BASE ADDRESS 2 CS2

 

CHIP SELECT

058

S

ADDRESS MASK 1 CS3

 

CHIP SELECT

05A

S

ADDRESS MASK 2 CS3

 

CHIP SELECT

05C

S

BASE ADDRESS 1 CS3

 

CHIP SELECT

05E

S

BASE ADDRESS 2 CS3

 

CHIP SELECT

Figure 4-8. SIM40 Programming Model

MOTOROLAMC68340 USER’S MANUAL4- 19

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Page 116
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Motorola MC68340 manual SIM40 Programming Model

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.