A96G140/A96G148/A96A148 User’s manual
4. Central processing unit ABOV
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4
Central Processing Unit (CPU)
Central Processing Unit (CPU) of A96G140/A96G148/A96A148 is based on Mentor Graphics
M8051EW core, which offers improved code efficiency and high performance.
4.1
Architecture and registers
Figure 10 shows a block diagram of the M8051EW architecture. As shown in the figure, the M8051EW
supports both Program Memory and External Data Memory. In addition, it features a Debug Mode in
which it can be driven through a dedicated debug interface.
Figure 10. M8051EW Architecture
Main features of the M8051EW are listed below:
Two clocks per machine cycle architecture:
This allows the device either to run up to six times faster with the same power consumption or
to consume one sixth of the power when running at standard speed. All instructions have zero-
wait-state execution times that are exactly 1/6 of the time each standard part takes.