MC9S08QG8 Datasheet, PDF (42/300 Pages) Freescale Semiconductor, Inc – 8-BIT HCS08 Central Processor Unit

Chapter 4 Memory Map and Register Definition
Address Register Name
0x1817 DBGT
0x1818 DBGS
0x1819–
0x181F
Reserved
0x1820 FCDIV
0x1821 FOPT
0x1822 Reserved
0x1823 FCNFG
0x1824 FPROT
0x1825 FSTAT
0x1826 FCMD
0x1827–
0x183F
Reserved
0x1840 PTAPE
0x1841 PTASE
0x1842 PTADS
0x1843 Reserved
0x1844 PTBPE
0x1845 PTBSE
0x1846 PTBDS
0x1847 Reserved
Table 4-3. High-Page Register Summary (continued)
Bit 7
TRGSEL
AF
—
—
DIVLD
KEYEN
—
0
FCBEF
—
—
0
0
0
—
PTBPE7
PTBSE7
PTBDS7
—
6
BEGIN
BF
—
—
PRDIV8
FNORED
—
0
FCCF
—
—
0
0
0
—
PTBPE6
PTBSE6
PTBDS6
—
5
0
ARMF
—
—
0
—
KEYACC
FPVIOL
—
—
PTAPE5
PTASE5
PTADS5
—
PTBPE5
PTBSE5
PTBDS5
—
4
3
2
0
TRG3
TRG2
0
CNT3
CNT2
—
—
—
—
—
—
DIV
0
0
0
—
—
—
0
0
0
FPS
FACCERR
0
FBLANK
FCMD
—
—
—
—
—
—
PTAPE4 PTAPE3 PTAPE2
PTASE4 PTASE3 PTASE2
PTADS4 PTADS3 PTADS2
—
—
—
PTBPE4 PTBPE3 PTBPE2
PTBSE4 PTBSE3 PTBSE2
PTBDS4 PTBDS3 PTBDS2
—
—
—
1
TRG1
CNT1
—
—
SEC01
—
0
0
—
—
PTAPE1
PTASE1
PTADS1
—
PTBPE1
PTBSE1
PTBDS1
—
Bit 0
TRG0
CNT0
—
—
SEC00
—
0
FPDIS
0
—
—
PTAPE0
PTASE0
PTADS0
—
PTBPE0
PTBSE0
PTBDS0
—
Nonvolatile FLASH registers, shown in Table 4-4, are located in the FLASH memory. These registers
include an 8-byte backdoor key that optionally can be used to gain access to secure memory resources.
During reset events, the contents of NVPROT and NVOPT in the nonvolatile register area of the FLASH
memory are transferred into corresponding FPROT and FOPT working registers in the high-page registers
to control security and block protection options.
Table 4-4. Nonvolatile Register Summary
Address Register Name
0xFFAE Reserved for
Storage of FTRIM
0xFFAF Reserved for
Storage of ICSTRM
0xFFB0 – NVBACKKEY
0xFFB7
0xFFB8 – Unused
0xFFBC
0xFFBD NVPROT
0xFFBE Unused
0xFFBF NVOPT
Bit 7
0
—
—
—
KEYEN
6
0
—
—
—
FNORED
5
4
3
2
0
0
0
0
TRIM
8-Byte Comparison Key
—
—
—
—
—
—
—
—
FPS
—
—
—
—
0
0
0
0
1
Bit 0
0
FTRIM
—
—
—
SEC01
—
—
FPDIS
—
SEC00
MC9S08QG8 and MC9S08QG4 Data Sheet, Rev. 1.01
42
Freescale Semiconductor