Datasheet

Chapter 4 Memory
MC9S08LC60 Series Data Sheet: Technical Data, Rev. 4
Freescale Semiconductor 61
4.6.6 FLASH Command Register (FCMD)
Only five command codes are recognized in normal user modes as shown in Table 4-14. Refer to
Section 4.4.3, “Program and Erase Command Execution” for a detailed discussion of FLASH
programming and erase operations.
It is not necessary to perform a blank check command after a mass erase operation. Blank check is required
only as part of the security unlocking mechanism.
76543210
R00000000
W FCMD7 FCMD6 FCMD5 FCMD4 FCMD3 FCMD2 FCMD1 FCMD0
Reset 00000000
Figure 4-10. FLASH Command Register (FCMD)
Table 4-13. FCMD Field Descriptions
Field Description
7:0
FCMD[7:0]
See Table 4-14 for a description of FCMD[7:0].
Table 4-14. FLASH Commands
1
1
All other command codes are illegal and generate an access error.
Command FCMD Equate File Label
Blank check 0x05 mBlank
Byte program 0x20 mByteProg
Byte program — burst mode 0x25 mBurstProg
Page erase (512 bytes/page) 0x40 mPageErase
Mass erase (all FLASH) 0x41 mMassErase