M68HC08 datasheet(96/408 Pages) MOTOROLA

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Break Module (BRK)

Technical Data

MC68HC908GR8 — Rev 4.0

Break Module (BRK)

MOTOROLA

6.6.2 Break Address Registers

The break address registers (BRKH and BRKL) contain the high and low

bytes of the desired breakpoint address. Reset clears the break address

registers.

6.6.3 Break Status Register

The break status register (SBSR) contains a flag to indicate that a break

caused an exit from wait mode. The flag is useful in applications

requiring a return to wait mode after exiting from a break interrupt.

Address:

$FE09

Bit 7

654321

Bit 0

Read:

Bit 15

Bit 8

Write:

Reset:

00000000

Figure 6-4. Break Address Register High (BRKH)

Address:

$FE0A

Bit 7

654321

Bit 0

Read:

Bit 7

654321

Bit 0

Write:

Reset:

00000000

Figure 6-5. Break Address Register Low (BRKL)

Address:

$FE00

Bit 7

654321

Bit 0

Read:

000100

Write:

RRRRRR

NOTE

Reset:

00010000

Note: Writing a logic 0 clears BW.

= Reserved

Figure 6-6. SIM Break Status Register (SBSR)

Freescale Semiconductor, Inc.

For More Information On This Product,

Go to: www.freescale.com

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