Device Overview; Block Diagram - Motorola MC68340 User Manual

SECTION 1

DEVICE OVERVIEW

The MC68340 is a high-performance 32-bit integrated processor with direct memory
access (DMA), combining an enhanced M68000-compatible processor, 32-bit DMA, and
other peripheral subsystems on a single integrated circuit. The MC68340 CPU32 delivers
32-bit CISC processor performance from a lower cost 16-bit memory system. The
combination of peripherals offered in the MC68340 can be found in a diverse range of
microprocessor-based systems, including embedded control and general computing.
Systems requiring very high-speed block transfers of data can especially benefit from the
MC68340.
The MC68340's high level of functional integration results in significant reductions in
component count, power consumption, board space, and cost while yielding much higher
system reliability and shorter design time. The 3.3-V MC68340V is particularly attractive to
applications requiring a very tight power budget. Complete code compatibility with the
MC68000 and MC68010 affords the designer access to a broad base of established real-
time kernels, operating systems, languages, applications, and development tools—many
oriented towards embedded control.
MOTOROLA
Freescale Semiconductor, Inc.
SYSTEM
INTEGRATION
MODULE
(SIM40)
SYSTEM
PROTECTION
CHIP SELECTS
AND
WAIT STATES
CLOCK
SYNTHESIZER
EXTERNAL
BUS
INTERFACE
BUS
TWO-CHANNEL DMA
ARBITRATION
CONTROLLER
IEEE TEST
Figure 1-1. Block Diagram
MC68340 USER'S MANUAL
For More Information On This Product,
Go to: www.freescale.com
CPU32
CHANNEL
68020– BASED
SERIAL
PROCESSOR
INTERMODULE BUS
TIMER
TWO-
I/O
TIMER
1- 1