Datasheet

ManualsBrandsNXP SEMICONDUCTORS ManualsMicrocontrollers, Microprocessors & QuartzesEmbedded microcontroller QFP 44 (10x10) 8-Bit 40 MHz I/O number 36

Chapter 4 Memory

MC9S08GB60A Data Sheet, Rev. 2

Freescale Semiconductor 49

High-page registers, shown in Table 4-3, are accessed much less often than other I/O and control registers

so they have been located outside the direct addressable memory space, starting at 0x1800.

Nonvolatile flash registers, shown in Table 4-4, are located in the flash memory. These registers include

an 8-byte backdoor key which 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 4-3. High-Page Register Summary

AddressRegister NameBit 7654321Bit 0

0x1800 SRS

POR PIN COP ILOP 0 ICG LVD 0

0x1801 SBDFR

0 0 0 0 0 0 0BDFR

0x1802 SOPT

COPE COPT STOPE — 0 0 BKGDPE —

0x1803 –

0x1805

Reserved

—

0x1806 SDIDH

REV3 REV2 REV1 REV0 ID11 ID10 ID9 ID8

0x1807 SDIDL

ID7 ID6 ID5 ID4 ID3 ID2 ID1 ID0

0x1808 SRTISC

RTIF RTIACK RTICLKS RTIE 0 RTIS2 RTIS1 RTIS0

0x1809 SPMSC1

LVDF LVDACK LVDIE LVDRE LVDSE LVDE 0 0

0x180A SPMSC2

LVWF LVWACK LVDV LVWV PPDF PPDACK PDC PPDC

0x180B–

0x180F

Reserved

—

0x1810 DBGCAH

Bit 15 14 13 12 11 10 9 Bit 8

0x1811 DBGCAL

Bit 7654321Bit 0

0x1812 DBGCBH

Bit 15 14 13 12 11 10 9 Bit 8

0x1813 DBGCBL

Bit 7654321Bit 0

0x1814 DBGFH

Bit 15 14 13 12 11 10 9 Bit 8

0x1815 DBGFL

Bit 7654321Bit 0

0x1816 DBGC

DBGEN ARM TAG BRKEN RWA RWAEN RWB RWBEN

0x1817 DBGT

TRGSEL BEGIN 0 0 TRG3 TRG2 TRG1 TRG0

0x1818 DBGS

AF BF ARMF 0 CNT3 CNT2 CNT1 CNT0

0x1819–

0x181F

Reserved

—

0x1820 FCDIV

DIVLD PRDIV8 DIV5 DIV4 DIV3 DIV2 DIV1 DIV0

0x1821 FOPT

KEYEN FNORED 0 0 0 0 SEC01 SEC00

0x1822 Reserved

— — — — — — — —

0x1823 FCNFG

0 0 KEYACC 0 0 0 0 0

0x1824 FPROT

FPOPEN FPDIS FPS2 FPS1 FPS0 0 0 0

0x1825 FSTAT

FCBEF FCCF FPVIOL FACCERR 0 FBLANK 0 0

0x1826 FCMD

FCMD7 FCMD6 FCMD5 FCMD4 FCMD3 FCMD2 FCMD1 FCMD0

0x1827–

0x182B

Reserved

—