h8s-2172 Renesas Electronics Corporation., h8s-2172 Datasheet - Page 122

• Manufacturer Part Number: h8s-2172
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family H8s-2100 Series
• Manufacturer: Renesas Electronics Corporation.

6.3.3
WTCR selects the number of program wait states for each area in the external address space.
Rev. 2.00, 03/04, page 90 of 534
Bit
15
14
13
12
11
10
9
8
7
Bit Name

W32
W31
W30

W22
W21
W20

Wait Control Register (WTCR)
Initial
Value
0
1
1
1
0
1
1
1
0
R/W
R
R/W
R/W
R/W
R
R/W
R/W
R/W
R
Description
Reserved
This bit is always read as 0 and cannot be modified.
Area 3 Wait Control 2 to 0
These bits select the number of program wait states
when accessing area 3 while AST3 bit in ACSCR = 1.
000: Program wait not inserted
001: 1 program wait state inserted
010: 2 program wait states inserted
011: 3 program wait states inserted
100: 4 program wait states inserted
101: 5 program wait states inserted
110: 6 program wait states inserted
111: 7 program wait states inserted
Reserved
This bit is always read as 0 and cannot be modified.
Area 2 Wait Control 2 to 0
These bits select the number of program wait states
when accessing area 2 while AST2 bit in ACSCR = 1.
000: Program wait not inserted
001: 1 program wait state inserted
010: 2 program wait states inserted
011: 3 program wait states inserted
100: 4 program wait states inserted
101: 5 program wait states inserted
110: 6 program wait states inserted
111: 7 program wait states inserted
Reserved
This bit is always read as 0 and cannot be modified.