Wait Control Registers H And L (Wcrh, Wcrl) - Hitachi H8S/2215 Series Hardware Manual

6.3.3

Wait Control Registers H and L (WCRH, WCRL)

WCRH and WCRL select the number of program wait states for each area.
Program waits are not inserted in the case of on-chip memory or internal I/O registers except for
the on-chip USB.
• WCRH
Bit Bit Name Initial Value R/W
7 W71 1
6 W70 1
5 W61* 1
4 W60* 1
Description
R/W Area 7 Wait Control 1 and 0:
R/W These bits select the number of program wait states
when area 7 in external space is accessed while the
AST7 bit in ASTCR is set to 1.
00: Program wait not inserted when external space area
7 is accessed
01: 1 program wait state inserted when external space
area 7 is accessed
10: 2 program wait states inserted when external space
area 7 is accessed
11: 3 program wait states inserted when external space
area 7 is accessed
R/W Area 6 Wait Control 1 and 0:
R/W 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.
00: Program wait not inserted when external space area
6 is accessed
01: 1 program wait state inserted when external space
area 6 is accessed
10: 2 program wait states inserted when external space
area 6 is accessed
11: 3 program wait states inserted when external space
area 6 is accessed
Rev. 3.0, 10/02, page 103 of 686