h8s-2169 Renesas Electronics Corporation., h8s-2169 Datasheet - Page 993

• Manufacturer Part Number: h8s-2169
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

WSCR—Wait State Control Register
Bit
Initial value
Read/Write
RAMS
R/W
Reserved bits
7
0
RAM0
R/W
Bus width control
6
0
0
1
External memory space designated as 16-bit access space
External memory space designated as 8-bit access space
ABW
R/W
5
1
Access state control
0
1
External memory space is designated as 2-state
access space
Wait state insertion in external memory space
accesses is disabled
External memory space is designated as 3-state
access space
Wait state insertion in external memory space
accesses is enabled
AST
R/W
4
1
Wait mode select 1 and 0
0
1
WMS1
Rev. 3.00 Jan 18, 2006 page 965 of 1044
R/W
H'FFC7
3
0
Wait count 1 and 0
0
1
0
1
0
1
Appendix B Internal I/O Registers
WMS0
Program wait mode
Wait disabled mode
Pin wait mode
Pin auto-wait mode
R/W
2
0
0
1
0
1
No program wait
states are inserted
1 program wait state
is inserted in external
memory space
accesses
2 program wait states
are inserted in external
memory space
accesses
3 program wait states
are inserted in external
memory space
accesses
WC1
R/W
1
1
REJ09B0280-0300
Bus Controller
WC0
R/W
0
1