Renesas H8S Series Hardware Manual page 139

Bits 3 and 2—Area 5 Wait Control 1 and 0 (W51, W50): These bits select the number of program wait states when area
5 in external space is accessed while the AST5 bit in ASTCR is set to 1.
Bit 3
W51
0
1
Bits 1 and 0—Area 4 Wait Control 1 and 0 (W41, W40): These bits select the number of program wait states when area
4 in external space is accessed while the AST4 bit in ASTCR is set to 1.
Bit 1
W41
0
1
(2) WCRL
Bit : 7
W31
Initial value : 1
R/W : R/W
Bits 7 and 6—Area 3 Wait Control 1 and 0 (W31, W30): These bits select the number of program wait states when area
3 in external space is accessed while the AST3 bit in ASTCR is set to 1.
Bit 7
W31
0
1
Bit 2
W50 Description
0 Program wait not inserted when external space area 5 is accessed
1 1 program wait state inserted when external space area 5 is accessed
0 2 program wait states inserted when external space area 5 is accessed
1 3 program wait states inserted when external space area 5 is accessed
Bit 0
W40 Description
0 Program wait not inserted when external space area 4 is accessed
1 1 program wait state inserted when external space area 4 is accessed
0 2 program wait states inserted when external space area 4 is accessed
1 3 program wait states inserted when external space area 4 is accessed
6 5
W30 W21
1 1
R/W R/W
Bit 6
W30 Description
0 Program wait not inserted when external space area 3 is accessed
1 1 program wait state inserted when external space area 3 is accessed
0 2 program wait states inserted when external space area 3 is accessed
1 3 program wait states inserted when external space area 3 is accessed
4 3 2
W20 W11 W10
1 1 1
R/W R/W R/W
(Initial value)
(Initial value)
1 0
W01 W00
1 1
R/W R/W
(Initial value)
Rev.6.00 Oct.28.2004 page 111 of 1016
REJ09B0138-0600H