Motorola ColdFire MCF5281 - Manual (Page 151)

Power Management
Freescale Semiconductor 7-15
4
The BDM logic is clocked by a separate TCLK clock. Entering halt mode via the BDM port exits any low-power mode.
Upon exit from halt mode, the previous low-power mode will be re-entered and changes made in halt mode will remain
in effect.
MCF5282 and MCF5216 ColdFire Microcontroller User’s Manual, Rev. 3