h8s-2635 Renesas Electronics Corporation., h8s-2635 Datasheet - Page 143

• Manufacturer Part Number: h8s-2635
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

3.2.3
PFCR is an 8-bit readable-writeable register that performs address output control in on-chip ROM-
enabled expansion mode.
PFCR is initialized to H'0D/H'00 by a reset and in the hardware 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 on-chip ROM-disabled expansion mode and on-chip
ROM-enabled expansion mode. 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. 6.00 Feb 22, 2005 page 83 of 1484
AE3
R/W
1/0
3
Section 3 MCU Operating Modes
AE2
R/W
1/0
2
AE1
R/W
REJ09B0103-0600
1
0
AE0
R/W
1/0
0