HD64F2168 Datasheet, PDF (116/874 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer

5.3.3 Break Address Registers A to C (BARA to BARC)
The BAR registers specify an address that is to be a break address. An address in which the first
byte of an instruction exists should be set as a break address. In normal mode, addresses A23 to
A16 are not compared.
• BARA
Bit Bit Name Initial Value R/W
7 to 0 A23 to A16 All 0
R/W
Description
Addresses 23 to 16
The A23 to A16 bits are compared with A23 to
A16 in the internal address bus.
• BARB
Bit Bit Name Initial Value R/W
7 to 0 A15 to A8 All 0
R/W
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 to 1 A7 to A1 All 0
R/W
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.
Rev. 3.00, 03/04, page 76 of 830