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IMPORTANT
(7) Output of the actual MCU and this product
Table 1.1 Differences of outputs between actual MCU and this product (when executing program)
Table 1.2 Differences of outputs between actual MCU and this product (when stopping program)
Access area Signal Actual MCU
This product
∗ for difference
Address
BHE*
Data
RD*
WR*
CS*
ALE
Address
BHE*
Data
RD*
WR*
CS*
ALE
Address
BHE*
Data
RD*
WR*
CS*
ALE
SFR area
(MAP = EXT)
Internal RAM
Internal ROM
External area
Outputs
Outputs
(Low at write cycle,
Low at read cycle)
Does not output
(fixed to High output)
Outputs
Floating
Does not output
(fixed to High output)
Does not output
(fixed to High output)
Outputs
Outputs
Outputs
(inputs external data at read cycle)
Outputs
(Low at write cycle,
Low at read cycle)
Outputs
Outputs
∗
∗
∗
Outputs
(floating during read operating)
Outputs
(Low at write cycle,
Low at read cycle)
Does not output
(fixed to High output)
Does not output
(fixed to Low output)
Outputs
Outputs
(inputs external data at read cycle)
Outputs
(Low at write cycle,
Low at read cycle)
Outputs
Outputs
Retains previous status
Floating
Does not output
(fixed to High output)
Does not output
(fixed to High output)
Does not output
(fixed to Low output)
Outputs
Outputs
Outputs
(floating during read operating)
Access area Signal
Actual MCU
This product
∗ for difference
RD*
WR*
CS*
ALE
Address
BHE*
Data Floating
Outputs RD* only
(WR* is fixed to High output)
Outputs
Outputs
Outputs