h8s-2138 Renesas Electronics Corporation., h8s-2138 Datasheet - Page 172

• Manufacturer Part Number: h8s-2138
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

Section 5 Interrupt Controller
5.4
5.4.1
With the H8S/2138 Group and H8S/2134 Group, it is possible to identify the prefetch of a specific
address by the CPU and generate an address break interrupt, using the ABRKCR and BAR
registers. When an address break interrupt is generated, address break interrupt exception handling
is executed.
This function can be used to detect the beginning of execution of a bug location in the program,
and branch to a correction routine.
5.4.2
A block diagram of the address break function is shown in figure 5.5.
Rev. 4.00 Jun 06, 2006 page 118 of 1004
REJ09B0301-0400
Internal address
Prefetch signal
(internal signal)
Features
Block Diagram
Address Breaks
Figure 5.5 Block Diagram of Address Break Function
Comparator
BAR
Match
signal
Control logic
ABRKCR
Address break
interrupt request