Motorola MC68340 manual Index-8

Models: MC68340

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TCS Bits, 7-27

TDI Signal, 2-13, 9-2

TDO Signal, 2-13, 9-2, 9-4 Test Access Port, 9-1

TG Bit, 8-6, 8-8, 8-23–8-24, 8-27 TGE Bit, 8-8–8-11, 8-15, 8-24, 8-27 TGL Bit, 8-7, 8-24

Thermal Characteristics, 11-1 Three Point Three Volts, 10-11 Timeout, 8-2, 8-7–8-9, 8-12, 8-15 Timer

Bypass, 8-16

Clock Selection Logic, 8-3

Compare Function, 8-2, 8-6–8-9, 8-11–8-12, 8-14, 8-15, 8-25

Counter, 8-2

Counting Function, 8-13, 8-15

Gate Signal, 2-12, 8-6, 8-7–8-16, 8-21, 8-24–8-25 Input Signal, 2-12, 8-2, 8-5–8-17

Interrupt Operation, 8-4, 8-17, 8-19, 8-21, 8-23–8-24, 8-27

Output Signal, 2-12, 8-2, 8-5–8-17 Prescaler, 8-2–8-3, 8-21 Programming Model, 8-28

Uses, 8-2

Using to Compare Values, 8-6–8-8 TMS Signal, 2-13, 9-2

TO Bit, 8-8–8-9, 8-23–8-24, 8-27 Toggle Mode, 8-23

TP Bit, 5-61

TR Bit, 5-56, 5-58, 5-61 Trace

Exception, 5-57 Modes, 5-10

on Instruction Execution, 5-63 Tracing, 5-56–5-58

Control Bits Encoding, 5-53 Transfer Cases, 3-5 Mechanism, 3-5, 3-16–3-18

Transition to Background Mode, 5-65–5-68 Transmit

Data Signal, 2-11

Shift Register, 7-9, 7-11 Transmitter, 7-10–7-11

Baud Rates, 7-27

Buffer, 7-9–7-10, 7-25, 7-30–7-31 Disable Command, 7-29

Enable Command, 7-29

Holding Register, 7-9–7-10, 7-25, 7-33 Ready Signal, 2-11

Timing, 7-10 TRAP Instruction, 5-46

Two-Clock Bus Cycles, 10-3 TxCTS Bit, 7-39, 7-47

TxDx Signal, 7-3, 7-6, 7-10, 7-14, 7-29 TxEMP Bit, 7-10, 7-25, 7-28 TxRDY Bit, 7-10, 7-25, 7-28, 7-31 TxRDYA Bit, 7-34–7-35

TxRDYA Signal, 7-7, 7-36 TxRDYB Bit, 7-33, 7-35

TxRTS Bit, 7-38, 7-47

Types of DMA Interrupts, 6-20

— U —

Unimplemented Instructions, 5-12

Emulation, 5-74

Exception, 5-48, 5-50

UNLK Instruction, 5-36

Use of Chip Selects, 4-15, 10-3–10-4

User

Privilege Level, 5-7, 5-37–5-38, 5-48

Using

8-Bit Boot ROM, 10-5

TGATE as an Input Port, 8-16

Table Lookup and Interpolate Instructions, 5-7, 5-12,

5-20–5-35

TOUT as an Output Port, 8-16–8-17

— V —

V Bit, 4-14–4-15, 4-20, 4-31, 4-36

Variable Duty-Cycle Square-Wave Generator, 8-9–8-10

Variable-Width Single-Shot Pulse Generator, 8-10–8-12

VCCSYN, 2-13, 4-9–4-11, 10-2–10-3

Vector Base Register, 5-4, 5-10, 5-39–5-41, 5-43

Vector Numbers, 5-34–5-40

Virtual Memory, 5-2

Voltage-Controlled Oscillator, 4-9–4-12, 4-28–4-29,

10-1–10-2

— W —

W Bit, 4-10, 4-12–4-13, 4-28, 4-36

Wait States, 3-14, 3-16–3-20, 4-1, 4-14–4-15, 4-17,

4-32

Wakeup Mode, 7-15

Word Operands, 5-12

WP Bit, 4-14

Write

A/D Register Command, 5-77–5-79

Cycle Word, Flowchart, 3-18

Memory Location Command, 5-79–5-80

System Register Command, 5-78–5-79

Write-Pending Buffer, 5-91

— X —

XBit, 4-9, 4-11–4-13, 4-28, 4-36 X1 Signal, 2-11, 7-5

X2 Signal, 2-11, 7-5

XFC Pin, 2-9, 4-12, 10-2–10-3 XTAL Pin, 2-9, 4-9–4-11, 10-1–10-2 XTAL_RDY Bit, 7-4, 7-26, 7-33–7-34, 7-46

Index-8

MC68340 USER’S MANUAL

MOTOROLA

 

For More Information On This Product,

 

 

Go to: www.freescale.com

 

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Motorola MC68340 manual Index-8

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.