HD64F3028F25 Datasheet, PDF (790/925 Pages) Renesas Technology Corp – Hardware Manual Renesas 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Series

BRCR—Bus Release Control Register
H'EE013
Bit
7
6
5
4
3
2
A23E A22E A21E A20E
—
—
Modes Initial value
1
1
1
1
1
1
1, 2, 6, 7 Read/Write —
—
—
—
—
—
Modes Initial value
1
1
1
0
1
1
3, 4
Read/Write R/W
R/W
R/W
—
—
—
Mode 5
Initial value
Read/Write
1
R/W
1
R/W
1
R/W
1
R/W
1
—
1
—
Bus controller
1
0
—
BRLE
1
0
—
R/W
1
0
—
R/W
1
0
—
R/W
Address 23 to 20 enable
0 Address output
1 Other input/output
Bus release enable
The bus cannot be
0 released to an
external device
The bus can be
1 released to an
external device
ISCR—IRQ Sense Control Register
H'EE014
Interrupt Controller
Bit
7
—
Initial value
0
Read/Write R/W
6
5
4
3
2
1
0
— IRQ5SC IRQ4SC IRQ3SC IRQ2SC IRQ1SC IRQ0SC
0
0
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W R/W
IRQ5 to IRQ0 sense control
0 Interrupts are requested when IRQ5 to IRQ0 are low
1 Interrupts are requested by falling-edge input at IRQ5 to IRQ0
Rev. 2.00, 09/03, page 758 of 890