Freescale Semiconductor MC68HC08KH12 - Manual (Page 50)

Advance Information MC68HC(7)08KH12 — Rev. 1.1
50 Freescale Semiconductor
NOTE: The CONFIG register is a special register containing one-time writable
latches after each reset. Upon a reset, the CONFIG register defaults to
the predetermined settings as shown in
Figure 5-1 .
SSREC — Short stop recovery bit
SSREC enables the CPU to exit stop mode with a delay of 32
CGMXCLK cycles instead of a 4096 CGMXCLK cycle delay.
1 = Stop mode recovery after 32 CGMXCLK cycles
0 = Stop mode recovery after 4096 CGMXCLK cycles
NOTE: Exiting stop mode by pulling reset will result in the long stop recovery.
If using an external crystal, do not set the SSREC bit.
COPRS — COP reset period selection bit
1 = COP reset cycle is (2
13
–2
4
)
×
CGMXCLK
0 = COP reset cycle is (2
18
–2
4
)
×
CGMXCLK
STOP — STOP instruction enable bit
STOP enables the STOP instruction.
1 = STOP instruction enabled
0 = STOP instruction treated as illegal opcode
COPD — COP disable bit
COPD disables the COP module. See Section 13. Computer
Operating Properly (COP) .
1 = COP module disabled
0 = COP module enabled
Address: $001F
Bit 7 6 5 4 3 2 1 Bit 0
Read: 0 0 0 0
SSREC COPRS STOP COPD
Write:
Reset: 0 0 0 0 0 0 0 0
= Unimplemented
Figure 5-1. Configuration Register (CONFIG)