User`s guide

Introduction LZ87010 Advance User’s Guide
1-8 1/15/03
1.6 Functional Description
The broad range of features in the LZ87010 allows it to support complex applications, such
as the one shown in Figure 1-3.
1.6.1 8051-Compatible Processor Core
The LZ87010 processor core is compatible with the industry-standard 8051. The additional
features of the LZ87010 have been mapped to unused addresses in the SFR (special func-
tion register) memory space. Two new instructions add software breakpoints and allow
writes to program memory.
The LZ87010 provides a sixfold increase in execution efficiency compared to the 8051
(two clock cycles per machine cycle instead of 12). Thus, a 40 MHz LZ87010 is equivalent
in performance to a 240 MHz 8051.
Figure 1-3. LZ87010 Application Diagram Example
I
2
C
EEPROM
CODE
EXPANSION
UART
A/D UART
LZ87010
RS-422
TRANSCEIVER
MOTOR
DRIVER
MOTOR
REMOTE
SENSOR
ARRAY
SENSOR
ARRAY
A/DGPIO D/A
LZ87010-2A