281
Pin
Selection Method and Pin Functions
PF1/
UCAS
/
IRQ14
The pin function is switched as shown below according to the combination of the
operating mode, bit EXPE, bits RMTS2 to RMTS0 in DRAMCR, and bit PF1DDR.
Operating
mode
1, 2, 4, 5, 6
7
EXPE
—
0
1
Areas 2 to 5 Any of
areas
2 to 5
is
DRAM
space
Areas 2 to 5
are all normal
space
—
Any of
areas
2 to 5
is
DRAM
space
Areas 2 to 5
are all normal
space
PF1DDR
—
0
1
0
1
—
0
1
Pin function
UCAS
output
pin
PF1
input
pin
PF1
output
pin
PF1
input
pin
PF1
output
pin
UCAS
output
pin
PF1
input
pin
PF1
output
pin
IRQ14
interrupt pin
*
Note:
*
IRQ14
interrupt input pin when bit ITS14 is cleared to 0 in ITSR.
PF0/
WAIT
The pin function is switched as shown below according to the operating mode, bit
EXPE, bit WAITE, and bit PF0DDR.
Operating
mode
1, 2, 4, 5, 6
7
EXPE
—
0
1
WAITE
0
1
—
0
1
PF0DDR
0
1
—
0
1
0
1
—
Pin function
PF0
input
pin
PF0
output
pin
WAIT
input
pin
PF0
input
pin
PF0
output
pin
PF0
input
pin
PF0
output
pin
WAIT
input
pin
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