Datasheet

Section 6 Bus Controller
Rev.6.00 Sep. 27, 2007 Page 152 of 1268
REJ09B0220-0600
Bits 5 and 4—Area 6 Wait Control 1 and 0 (W61, W60): These bits select the number of
program wait states when area 6 in external space is accessed while the AST6 bit in ASTCR is set
to 1.
Bit 5
W61
Bit 4
W60 Description
0 0 Program wait not inserted when external space area 6 is accessed
1 1 program wait state inserted when external space area 6 is accessed
1 0 2 program wait states inserted when external space area 6 is accessed
1 3 program wait states inserted when external space area 6 is accessed
(Initial value)
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
Bit 2
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
W41
Bit 0
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)