MC9S12T64 Datasheet, PDF (553/608 Pages) Motorola, Inc – Specification

Freescale Semiconductor, Inc.
Breakpoint (BKP)
Register Descriptions
Register Descriptions
There are eight 8-bit registers in the BKP module.
NOTE: All bits of all registers in this module are completely synchronous to
internal clocks during a register read.
Breakpoint Control
Register 0
(BKPCT0)
This register is used to set the breakpoint modes.
Read and write: anytime.
Address Offset $0028
Bit 7
6
5
4
3
2
1
Bit 0
Read:
0
0
0
0
BKEN
BKFULL BKBDM
BKTAG
Write:
Reset:
0
0
0
0
0
0
0
0
= Reserved or unimplemented
BKEN — Breakpoint Enable
This bit enables the module.
1 = Breakpoint module on.
0 = Breakpoint module off.
BKFULL— Full Breakpoint Mode Enable
This bit controls whether the breakpoint module is in Dual Address
Mode or Full Breakpoint Mode
1 = Full Breakpoint Mode enabled.
0 = Dual Address Mode enabled.
BKBDM — Breakpoint Background Debug Mode Enable
This bit determines if the breakpoint causes the system to enter
Background Debug Mode (BDM) or initiate a Software Interrupt (SWI)
1 = Go to BDM on a compare.
0 = Go to Software Interrupt on a compare.
Breakpoint (BKP)
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MC9S12T64Revision 1.1.1