mc9s08qd4 Freescale Semiconductor, Inc, mc9s08qd4 Datasheet - Page 51

• Manufacturer Part Number: mc9s08qd4
• Description: Hcs08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

4.7.6
Only five command codes are recognized in normal user modes as shown in
Section 4.5.3, “Program and Erase Command
and erase operations.
All other command codes are illegal and generate an access error.
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.
Freescale Semiconductor
Reset
W
R
Flash Command Register (FCMD)
0
0
7
= Unimplemented or Reserved
Page erase (512 bytes/page)
Byte program — burst mode
0
0
6
Mass erase (all flash)
Byte program
Figure 4-10. Flash Command Register (FCMD)
Blank check
Command
MC9S08QD4 Series MCU Data Sheet, Rev. 3
0
0
5
Table 4-13. Flash Commands
Execution,” for a detailed discussion of flash programming
0
0
4
FCMD
0x05
0x20
0x25
0x40
0x41
FCMD
3
0
0
Equate File Label
mPageErase
mMassErase
Chapter 4 Memory Map and Register Definition
mBurstProg
mByteProg
mBlank
0
0
2
Table
4-13. Refer to
0
0
1
0
0
0
51