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HARDWARE DESCRIPTION
5.2.2
Port Replacement Unit
The EVB operates in the expanded multiplexed mode of operation. An MC68HC24 PRU device
(U1) is used to replace the MCU I/O ports B and C (including STRA and STRB control lines)
used for single chip mode of operation. The PRU provides the required single chip mode I/O lines
for target system evaluation (emulation) via the EVB MCU extension I/O port connector P1.
Figure 5-1. EVB Block Diagram
5-2
M68HC11EVB/D
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