The MC68340 is a high-performance
32-bit
In computer architecture, 32-bit computing refers to computer systems with a processor, memory, and other major system components that operate on data in 32-bit units. Compared to smaller bit widths, 32-bit computers can perform large calculation ...
microprocessor
A microprocessor is a computer processor where the data processing logic and control is included on a single integrated circuit, or a small number of integrated circuits. The microprocessor contains the arithmetic, logic, and control circu ...
with
direct memory access
Direct memory access (DMA) is a feature of computer systems and allows certain hardware subsystems to access main system memory independently of the central processing unit (CPU).
Without DMA, when the CPU is using programmed input/output, it is t ...
(DMA).
Features
* High Functional Integration on a Single Piece of
Silicon
Silicon is a chemical element with the symbol Si and atomic number 14. It is a hard, brittle crystalline solid with a blue-grey metallic luster, and is a tetravalent metalloid and semiconductor. It is a member of group 14 in the periodic tab ...
* Two-Channel Low-Latency DMA Controller for High-Speed Memory Transfers
* Two-Channel Universal Synchronous/Asynchronous Receiver/Transmitter (USART)
* Two Independent Counter/Timers
* System Integration Module Incorporates Many Functions Typically Relegated to External PALs, TTL, and ASIC
* 32 Address Lines, 16 Data Lines
* Power Consumption Control
* 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)
* Available in 3.3 and 5V
Family
The MC68340 is one of a series of components in
Motorola
Motorola, Inc. () was an American Multinational corporation, multinational telecommunications company based in Schaumburg, Illinois, United States. After having lost $4.3 billion from 2007 to 2009, the company split into two independent p ...
's M68300 Family. Other members of the family
include the MC68302, MC68330, MC68331, MC68332, and MC68F333.
Sources
Product Brief MC68340User’s ManualFreescale semiconductors
68k microprocessors