HD64F7051SFJ20V Datasheet, PDF (117/843 Pages) Renesas Technology Corp – Hardware Manual Renesas 32-Bit RISC

Section 7 User Break Controller (UBC)
Section 7 User Break Controller (UBC)
7.1 Overview
The user break controller (UBC) provides functions that simplify program debugging. Break
conditions are set in the UBC and a user break interrupt is generated according to the conditions of
the bus cycle generated by the CPU, DMAC, or DTC. This function makes it easy to design an
effective self-monitoring debugger, enabling the chip to easily debug programs without using a
large in-circuit emulator.
7.1.1 Features
The features of the user break controller are:
• Break compare conditions can be set:
 Address
 CPU cycle/DMA cycle
 Instruction fetch or data access
 Read or write
 Operand size: byte/word/longword
• User break interrupt generated upon satisfying break conditions. A user-designed user break
interrupt exception processing routine can be run.
• Select either to break in the CPU instruction fetch cycle before the instruction is executed or
after.
Rev. 5.00 Jan 06, 2006 page 95 of 818
REJ09B0273-0500