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
Bit 2
W51
W50
Description
0
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
1
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
(Initial value)
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
Bit 0
W41
W40
Description
0
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
1
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
(Initial value)
Содержание H8S/2631
Страница 28: ...xviii Appendix G Package Dimensions 1154 ...
Страница 341: ...316 Transfer SAR or DAR DAR or SAR Block area First block Nth block Figure 9 8 Memory Mapping in Block Transfer Mode ...
Страница 918: ...905 ø DREQ0 DREQ1 tDRQS tDRQH Figure 25 19 DMAC DREQ Input Timing ...
Страница 955: ...943 A 2 Instruction Codes Table A 2 shows the instruction codes ...