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MC9S08AW60 Datasheet(PDF) 63 Page - Freescale Semiconductor, Inc

No. de Pieza. MC9S08AW60
Descripción  Microcontrollers
Descarga  324 Pages
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Fabricante  FREESCALE [Freescale Semiconductor, Inc]
Página de inicio  http://www.freescale.com
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MC9S08AW60 Datasheet(HTML) 63 Page - Freescale Semiconductor, Inc

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Chapter 4 Memory
MC9S08AW60 Data Sheet, Rev 2
Freescale Semiconductor
63
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.
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.
76543210
R
00000000
W
FCMD7
FCMD6
FCMD5
FCMD4
FCMD3
FCMD2
FCMD1
FCMD0
Reset
00000000
Figure 4-11. FLASH Command Register (FCMD)
Table 4-13. FCMD Register Field Descriptions
Field
Description
FCMD[7:0]
FLASH Command Bits — See Table 4-14
Table 4-14. FLASH Commands
Command
FCMD
Equate File Label
Blank check
$05
mBlank
Byte program
$20
mByteProg
Byte program — burst mode
$25
mBurstProg
Page erase (512 bytes/page)
$40
mPageErase
Mass erase (all FLASH)
$41
mMassErase


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