h8s-2649 Renesas Electronics Corporation., h8s-2649 Datasheet - Page 149

• Manufacturer Part Number: h8s-2649
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

7.3.6
PFCR controls the address output in expanded mode with on-chip ROM enabled.
Note:
Bit
7 to 4 
3
2
1
0
Bit Name
AE3
AE2
AE1
AE0
*
Pin Function Control Register (PFCR)
In expanded mode with on-chip ROM enabled, bits 3 to 0 are initialized to B'0000. In
expanded mode with on-chip ROM disabled, bits 3 to 0 are initialized to B'1101.
Initial
Value
All 0
0/1*
0/1*
0
0/1*
R/W

R/W
R/W
R/W
R/W
Description
Reserved
The write value should always be 0.
Address Output Enable 3 to 0
These bits enable or disable address outputs A8 to A23 in
expanded mode with on-chip ROM. When a pin is enabled
for address output, the address is output regardless of the
corresponding DDR setting. For a pin disabled for address
output, each becomes an output port when the
corresponding DDR bit is set to 1. For pins A7 to A0, each
becomes an address output when the corresponding DDR
bit is set to 1.
0000: A8 to A23 output disabled
0001: A8 output enabled; A9 to A23 output disabled
0010: A8 and A9 output enabled; A10 to A23 output disabled
0011: A8 to A10 output enabled; A11 to A23 output disabled
0100: A8 to A11 output enabled; A12 to A23 output disabled
0101: A8 to A12 output enabled; A13 to A23 output disabled
0110: A8 to A13 output enabled; A14 to A23 output disabled
0111: A8 to A14 output enabled; A15 to A23 output disabled
1000: A8 to A15 output enabled; A16 to A23 output disabled
1001: A8 to A16 output enabled; A17 to A23 output disabled
1010: A8 to A17 output enabled; A18 to A23 output disabled
1011: A8 to A18 output enabled; A19 to A23 output disabled
1100: A8 to A19 output enabled; A20 to A23 output disabled
1101: A8 to A20 output enabled; A21 to A23 output disabled
1110: A8 to A21 output enabled; A22 and A23 output
1111: A8 to A23 output enabled
disabled
Rev. 2.00 Dec. 05, 2005 Page 111 of 724
Section 7 Bus Controller (BSC)
REJ09B0200-0200