HD64F2145 Datasheet, PDF (130/829 Pages) Renesas Technology Corp – Hitachi 16-Bit Single-Chip Microcomputer

• BARB
Bit Bit Name Initial Value R/W
7
A15
All 0
R/W
to
to
0
A8
Description
Addresses 15 to 8
The A15 to A8 bits are compared with A15 to
A8 in the internal address bus.
• BARC
Bit Bit Name Initial Value R/W
7
A7
All 0
R/W
to
to
1
A1
0
—
0
R
Description
Addresses 7 to 1
The A7 to A1 bits are compared with A7 to A1 in
the internal address bus.
Reserved
This bit is always read as 0 and cannot be
modified.
5.3.4 IRQ Sense Control Registers (ISCRH, ISCRL)
The ISCR registers select the source that generates an interrupt request at pins ,54: to ,543.
• ISCRH
Bit Bit Name Initial Value R/W
7
IRQ7SCB 0
R/W
6
IRQ7SCA 0
R/W
5
IRQ6SCB 0
R/W
4
IRQ6SCA 0
R/W
3
IRQ5SCB 0
R/W
2
IRQ5SCA 0
R/W
1
IRQ4SCB 0
R/W
0
IRQ4SCA 0
R/W
Description
IRQn Sense Control B
IRQn Sense Control A
00: Interrupt request generated at low level of
,54Q input
01: Interrupt request generated at falling edge
of ,54Q input
10: Interrupt request generated at rising edge of
,54Q input
11: Interrupt request generated at both falling
and rising edges of ,54Q input
(n = 7 to 4)
Rev. 2.0, 08/02, page 90 of 788