Datasheet

Chapter 4 Memory
MC9S08EL32 Series and MC9S08SL16 Series Data Sheet, Rev. 3
62 Freescale Semiconductor
4.5.11.6 FLASH and EEPROM Command Register (FCMD)
Only six command codes are recognized in normal user modes as shown in Table 4-15. All other command
codes are illegal and generate an access error. Refer to Section 4.5.3, “Program and Erase Command
Execution,” for a detailed discussion of FLASH and EEPROM programming and erase operations.
It is not necessary to perform a blank check command after a mass erase operation. Only blank check is
required as part of the security unlocking mechanism.
76543210
R00000000
WFCMD
Reset00000000
= Unimplemented or Reserved
Figure 4-10. FLASH and EEPROM Command Register (FCMD)
Table 4-15. FLASH and EEPROM Commands
Command FCMD Equate File Label
Blank check 0x05 mBlank
Byte program 0x20 mByteProg
Burst program 0x25 mBurstProg
Sector erase 0x40 mSectorErase
Mass erase 0x41 mMassErase
Sector erase abort 0x47 mEraseAbort