h8s-2646 Renesas Electronics Corporation., h8s-2646 Datasheet - Page 177

• Manufacturer Part Number: h8s-2646
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

7.2.6
PFCR is an 8-bit read/write register that controls the address output in expanded mode with ROM.
PFCR is initialized to H'0D/H'00 by a reset and in hardware standby mode. It retains its previous
state in software standby mode.
Bits 7 to 4—Reserved: Only 0 should be written to these bits.
Bits 3 to 0—Address Output Enable 3 to 0 (AE3 to AE0): These bits select enabling or
disabling of address outputs A8 to A23 in ROMless expanded mode and modes with ROM. When
a pin is enabled for address output, the address is output regardless of the corresponding DDR
setting. When a pin is disabled for address output, it becomes an output port when the
corresponding DDR bit is set to 1.
Bit
Initial value
R/W
Pin Function Control Register (PFCR)
:
:
:
R/W
—
7
0
R/W
—
6
0
R/W
—
5
0
R/W
—
4
0
Rev. 5.00 Sep 22, 2005 page 151 of 1136
AE3
R/W
1/0
3
AE2
R/W
1/0
2
Section 7 Bus Controller
R/W
AE1
REJ09B0257-0500
1
0
R/W
AE0
1/0
0