HD6473032F Datasheet, PDF (541/572 Pages) Hitachi Semiconductor – Hitachi Microcomputer

ASTCR—Access State Control Register
H'ED
Bus controller
Bit
Initial value
Read/Write
7
AST7
1
R/W
6
AST6
1
R/W
5
AST5
1
R/W
4
AST4
1
R/W
3
AST3
1
R/W
2
AST2
1
R/W
1
AST1
1
R/W
0
AST0
1
R/W
Area 7 to 0 access state control
Bits 7 to 0
AST7 to AST0 Number of States in Access Cycle
0
Areas 7 to 0 are two-state access areas
1
Areas 7 to 0 are three-state access areas
WCR—Wait Control Register
H'EE
Bus controller
Bit
7
6
5
4
3
2
1
0
—
—
—
— WMS1 WMS0 WC1 WC0
Initial value
1
1
1
1
0
0
1
1
Read/Write
—
—
—
—
R/W R/W R/W R/W
Wait mode select 1 and 0
Bit 3 Bit 2
WMS1 WMS0 Wait Mode
0
0 Programmable wait mode
1 No wait states inserted by
wait-state controller
1
0 Pin wait mode
1 Pin auto-wait mode
Wait count 1 and 0
Bit 1 Bit 0
WC1 WC0 Number of Wait States
0
0 No wait states inserted by
wait-state controller
1 1 state inserted
1
0 2 states inserted
1 3 states inserted
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