r4f2426 Renesas Electronics Corporation., r4f2426 Datasheet - Page 681

• Manufacturer Part Number: r4f2426
• Description: 16-bit Single-chip Microcomputer H8s Family / H8s/2400 Series
• Manufacturer: Renesas Electronics Corporation.

• PG2/CS2/RAS2/RAS*
Note:
• PG1/CS1, PG0/CS0
Legend:
n = 1 or 0
Operating
mode
EXPE
CS2E
RMTS2
to
RMTS0
PG2DDR
Pin
function
Operating
mode
EXPE
CSnE
PGnDDR
Pin
function
The pin function is switched as shown below according to the combination of the operating
mode, bits RMTS2 to RMTS0 in DRAMCR of the bus controller, bit CS2E in PFCR0, and bit
PG2DDR.
The pin function is switched as shown below according to the combination of the operating
mode, bit CSnE in PFCR0, and bit PGnDDR.
*
input
PG2
0
Not supported in the H8S/2426 Group and H8S/2424 Group.

0
output
input
PGn
PG2
1
0
input
PG2
0
Area 2 is in
0
output
normal
space
PGn
1
output
1, 2, 4
CS2
1, 2, 4
1


Area 2
DRAM
output
space
RAS2
input
PGn
is in

1
0
synchronous
Areas 2 to 5
1
DRAM*
output
output
space
RAS*
are in
CSn

1
input
input
PG2
PGn
0
0


0
output

PG2
0
1
output
PGn
1
Rev. 1.00 Sep. 19, 2008 Page 653 of 1270
input
PG2
0

0
output
input
PGn
PG2
1
0
input
PG2
0
Area 2 is in
7
0
7
output
normal
space
PGn
1
output
CS2
1
1
Section 10 I/O Ports
1
REJ09B0466-0100
Area 2
DRAM
output
space
RAS2
input
is in
PGn

1
0
synchronous
Areas 2 to 5
1
DRAM*
output
space
RAS*
output
are in
CSn

1