MC68340 datasheet(26/441 Pages) FREESCALE

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MC68340 USER’S MANUAL

MOTOROLA

The primary features of the MC68340, illustrated in Figure 1-1, are as follows:

• High Functional Integration on a Single Piece of Silicon

• CPU32—MC68020-Derived 32-Bit Central Processor Unit

— Upward Object-Code Compatible with MC68000 and MC68010

— Additional MC68020 Instructions and Addressing Modes

— Unique Embedded Control Instructions

— Fast Two-Clock Register Instructions—10,045 Dhrystones

• Two-Channel Low-Latency DMA Controller for High-Speed Memory Transfers

— Single- or Dual-Address Transfers

— 32-Bit Addresses and Counters

— 8-, 16-, and 32-Bit Data Transfers

— 50 Mbyte/Sec Sustained Transfers (12.5 Mbyte/Sec Memory-to-Memory)

• Two-Channel Universal Synchronous/Asynchronous Receiver/Transmitter (USART)

— Baud Rate Generators

— Modem Control

— MC68681/MC2681 Compatible

— 9.8 Mbits/Sec Maximum Transfer Rate

• Two Independent Counter/Timers

— 16-Bit Counter

— Up to 8-Bit Prescaler

— Multimode Operation

— 80-ns Resolution

• System Integration Module Incorporates Many Functions Typically Relegated to

External PALs, TTL, and ASIC, such as:

— System Configuration

— External Bus Interface

— System Protection

— Periodic Interrupt Timer

— Chip Select and Wait State Generation — Interrupt Response

— Clock Generation

— Bus Arbitration

— Dynamic Bus Sizing

— IEEE 1149.1 Boundary Scan (JTAG)

— Up to 16 Discrete I/O Lines

— Power-On Reset

• 32 Address Lines, 16 Data Lines

• Power Consumption Control

— Static HCMOS Technology Reduces Power in Normal Operation

— Low Voltage Operation at 3.3 V

±0.3 V (MC68340V only)

— Programmable Clock Generator Throttles Frequency

— Unused Peripherals Can Be Turned Off

— LPSTOP Provides an Idle State for Lowest Standby Current

• 0–16.78 MHz or 0–25.16 MHz Operation

• 144-Pin Ceramic Quad Flat Pack (CQFP) or 145-Pin Plastic Pin Grid Array (PGA)

As a low voltage part, the MC68340V can operate with a 3.3-V power supply. MC68340 is

used throughout this manual to refer to both the low voltage and standard 5-V parts since

both are functionally equivalent.

1.1 M68300 FAMILY

The MC68340 is one of a series of components in the M68300 family. Other members of

the family include the MC68302, MC68330, MC68331, MC68332, and MC68333.

Freescale Semiconductor, Inc.

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