Motorola MC68306 Bedienungsanleitung PDF herunterladen (Seite 19)

12 68K and ColdFire Product Portfolio Overview MOTOROLA

MC68EC020

Features • 24-bit address bus and 32-bit data bus

• 256-byte instruction cache

• Coprocessor interface

• 7.4 MIPS performance at 25 MHz

Target Markets and

Applications

The strategy behind the MC68EC020 is to upgrade current MC68000

and MC68HC000 users to a higher performance product with a

minimum increase in device or system cost. Key applications are PABX

low level, GSM basestations, network controllers, printers, dumb

terminals, robotics, VME boards, and instrumentation. The

MC68EC020 has a 24-bit address bus and does not support extended

temperature.

Competitors AMD and Intel

Motorola’s

Competitive

Advantage

Even though the Intel 960SA is similar in price to the MC68EC020, the

extra logic you need to run the 960SA increases the overall system cost.

In addition, the 960SB is an on-chip ﬂoating point unit, but it can be

attacked by the high-performance MC68EC020/MC68882 combination

with an aggressive price structure.

PREFETCH/

DECODE

CONTROL

24-BIT ADDRESS BUS

32-BIT DATA BUS

BIU

AND

CONTROLLER

SEQUENCE/

CONTROL

EXECUTION

UNIT

INSTRUCTION

CACHE

MISCELLANEOUS

1 2 ... 14 15 16 17 18 19 20 21 22 23 24 ... 92 93

Keine Kommentare

Motorola MC68306 Bedienungsanleitung Seite 19