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March 2001
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unacceptable choice; however, there are some products that lend themselves well to
light duty in the other segment:
Supplier
Product
Primary
Usage
Advantages in
Secondary Usage
HLL
Support
Development
Tool Quality
Mixed Application
Examples
National
Semiconductor
Compact-
RISC
16-bit
MCU
ü
Hardware Multiply
ü
Signed Math
ü
Fast accurate A/D
ü
Synchronous I/O
Very
Good
Good
ü
Payphones
ü
Airbag Module
ü
Precision Motor
Control
ü
Security
Systems
Analog Devices
ADSP-21xx
16-bit
DSP
ü
External interrupts
ü
Fast context switching
ü
I/O port
Poor
Needs
Improvement
ü
Speakerphone
ü
Precision Motor
Control
ü
Occupant
Sensing
Infineon
C167
16-bit
MCU
ü
Barrel shifter
ü
DMA
ü
Fast A/D
Excellent
Excellent
ü
Barcode
Scanner
ü
Mass Storage
ü
Airbag Module
ü
Powertrain
ST-
Microelectronics
ST10F269
16-bit
MCU
ü
Same as C167 plus
ü
Single-cycle MAC
Good
Very Good
ü
Mass Storage
ü
Powertrain
Texas
Instruments
C240
16-bit
DSP
ü
Rich MCU peripheral
set
ü
Event manager
ü
On-chip Flash
Good
Good
ü
POS Terminals
ü
Electronic
Steering
ü
Motor Control
Zilog
Z893xx
8-bit
DSP
ü
MCU peripheral set
ü
Low cost
ü
Assembly language
similar to Z8
No
Needs
Improvement
ü
Caller ID
ü
Motor Control
ü
Magnetic Card
Reader
Table 2 - Examples of 8-bit & 16-bit Embedded Processors for Dual Functionality Applications
Note that Table 2 only looks at conventional architectures.
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