272
PEPCR is initialized to H'00 by a reset and in hardware standby mode. It retains its prior state in
software standby mode.
5.14.3
Pin Functions
Port E pins also function as data input/output pins. Port E pin functions are shown in table 5.30.
Table 5.30
Port E Pin Functions
Pin
Selection Method and Pin Functions
PE7/D7
PE6/D6
The pin function is switched as shown below according to the operating mode, the
bus mode, bit EXPE, and bit PEDDR.
PE5/D5
PE4/D4
Operating
mode
1, 2, 4, 5, 6
7
PE3/D3
PE2/D2
PE1/D1
Bus mode
All areas
8-bit space
At least
one area
16-bit
space
—
All areas
8-bit space
At least
one area
16-bit
space
PE0/D0
EXPE
—
—
0
1
1
PEDDR
0
1
—
0
1
0
1
—
Pin function
PE
input
pin
PE
output
pin
Data I/O
pin
PE
input
pin
PE
output
pin
PE
input
pin
PE
output
pin
Data I/O
pin
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