Datasheet

Section 9 I/O Ports
Rev.6.00 Sep. 27, 2007 Page 440 of 1268
REJ09B0220-0600
Pin Selection Method and Pin Functions
PG
1
/CS
3
The pin function is switched as shown below according to the operating mode
and bits PG1DDR and CS25E.
Operating
Mode
Modes 4 to 6 Mode 7
PG1DDR 0 1 0 1
CS25E — 0 1 — —
Pin function PG
1
input
pin
PG
1
output
pin
CS
3
output
pin
PG
1
input
pin
PG
1
output
pin
PG
0
/CAS
*
The pin function is switched as shown below according to the combination of
the operating mode and bits RMTS2 to RMTS0
*
and PG0DDR.
Operating
Mode
Modes 4 to 6 Mode 7
RMTS2 to
RMTS0
*
B'000,
B'100 to B'111
B'001 to
B'011
—
PG0DDR 0 1 — 0 1
Pin function PG
0
input
pin
PG
0
output
pin
CAS
output
pin
*
PG
0
input
pin
PG
0
output
pin
Note: * The DRAM interface and CAS are not supported in the H8S/2321.