HD6433308 Datasheet, PDF (331/349 Pages) Hitachi Semiconductor – Hitachi Single-Chip MicroComputer

MDCR—Mode Control Register
H’FFC5
System Control
Bit
7
6
5
4
3
2
1
0
—
—
—
—
—
— MDS1 MDS0
Initial value 1
1
1
0
0
1
*
*
Read/Write —
—
—
—
—
—
R
R
Mode Select Bits
Value at mode pins.
* Determined by inputs at pins MD1 and MD0.
ISCR—IRQ Sense Control Register
H’FFC6
System Control
Bit
7
6
5
4
3
2
1
0
IRQ7SC IRQ6SC IRQ5SC IRQ4SC IRQ3SC IRQ2SC IRQ1SC IRQ0SC
Initial value 0
0
0
0
0
0
0
0
Read/Write R/W R/W R/W R/W R/W R/W R/W R/W
IRQ0 to IRQ7 Sense Control
0 IRQi is level-sensed (active Low).
1 IRQi is edge-sensed (falling edge).
IER—IRQ Enable Register
H’FFC7
System Control
Bit
Initial value
Read/Write
7
IRQ7E
0
R/W
6
IRQ6E
0
R/W
5
IRQ5E
0
R/W
4
IRQ4E
0
R/W
3
IRQ3E
0
R/W
2
IRQ2E
0
R/W
1
IRQ1E
0
R/W
0
IRQ0E
0
R/W
IRQ0 to IRQ7 Enable
0 IRQi is disabled.
1 IRQi is enabled.
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