286
Pin
Selection Method and Pin Functions
PG4/
BREQO
The pin function is switched as shown below according to the operating mode, bit
EXPE, bit BRLE, bit BREQOE, and bit PG4DDR.
Operating
mode
1, 2, 4, 5, 6
7
EXPE
—
0
1
BRLE
0
1
—
0
1
BREQOE
—
0
1
—
—
0
1
PG4DDR
0
1
0
1
—
0
1
0
1
0
1
—
Pin
function
PG4
input
pin
PG4
output
pin
PG4
input
pin
PG4
output
pin
BREQO
output
pin
PG4
input
pin
PG4
output
pin
PG4
input
pin
PG4
output
pin
PG4
input
pin
PG4
output
pin
BREQO
output
pin
PG3/
CS3
PG2/
CS2
The pin function is switched as shown below according to the operating mode, bit
PGnDDR, bit CSnE, and bits RMTS2 to RMTS0.
Operating
mode
1, 2, 4, 5, 6
7
EXPE
—
0
1
CSnE
0
1
—
0
1
RMTS2 to
RMTS0
—
Area n
in DRAM
space
Area n
in normal
space
—
—
Area n
in DRAM
space
Area n
in normal
space
PGnDDR
0
1
—
0
1
0
1
0
1
—
0
1
Pin
function
PGn
input
pin
PGn
output
pin
RASn
output
pin
PGn
input
pin
CSn
output
pin
PGn
input
pin
PGn
output
pin
PGn
input
pin
PGn
output
pin
RASn
output
pin
PGn
input
pin
CSn
output
pin
(n = 3 or 2)
PG1/
CS1
PG0/
CS0
The pin function is switched as shown below according to the operating mode, bit
PGnDDR, and bit CSnE.
Operating
mode
1, 2, 4, 5, 6
7
EXPE
—
0
1
CSnE
0
1
—
0
1
PGnDDR
0
1
0
1
0
1
0
1
0
1
Pin function
PGn
input
pin
PGn
output
pin
PGn
input
pin
CSn
output
pin
PGn
input
pin
PGn
output
pin
PGn
input
pin
PGn
output
pin
PGn
input
pin
CSn
output
pin
(n =1 or 0)
Summary of Contents for H8S/2670
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