Datasheet

Input/Output (I/O) Section
MC68HC908QY/QT Family Data Sheet, Rev. 6
Freescale Semiconductor 31
$FE08
FLASH Control Register
(FLCR)
See page 34.
Read: 0 0 0 0
HVEN MASS ERASE PGM
Write:
Reset:00000000
$FE09
Break Address High
Register (BRKH)
See page 136.
Read:
Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 Bit 9 Bit 8
Write:
Reset:00000000
$FE0A
Break Address low
Register (BRKL)
See page 136.
Read:
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
Write:
Reset:00000000
$FE0B
Break Status and Control
Register (BRKSCR)
See page 136.
Read:
BRKE BRKA
000000
Write:
Reset:00000000
$FE0C
LVI Status Register
(LVISR)
See page 87.
Read:LVIOUT000000R
Write:
Reset:00000000
$FE0D
↓
$FE0F
Reserved for FLASH Test RRRRRRRR
$FFBE
FLASH Block Protect
Register (FLBPR)
See page 39.
Read:
BPR7 BPR6 BPR5 BPR4 BPR3 BPR2 BPR1 BPR0
Write:
Reset: Unaffected by reset
$FFBF Reserved RRRRRRRR
$FFC0
Internal Oscillator Trim
(Factory Programmed,
VDD = 5.0 V)
Read:
TRIM7 TRIM6 TRIM5 TRIM4 TRIM3 TRIM2 TRIM1 TRIM0
Write:
Reset: Unaffected by reset
$FFC1
Internal Oscillator Trim
(Factory Programmed,
VDD = 3.0 V)
Read:
TRIM7 TRIM6 TRIM5 TRIM4 TRIM3 TRIM2 TRIM1 TRIM0
Write:
Reset: Unaffected by reset
$FFFF
COP Control Register
(COPCTL)
See page 59.
Read: LOW BYTE OF RESET VECTOR
Write: WRITING CLEARS COP COUNTER (ANY VALUE)
Reset: Unaffected by reset
Addr.Register Name Bit 7654321Bit 0
= Unimplemented R = Reserved U = Unaffected
Figure 2-2. Control, Status, and Data Registers (Sheet 5 of 5)