MC9S12GRMV1 Datasheet, PDF(1169/1292 Page) Freescale Semiconductor, Inc – MC9S12G Family Reference Manual and Data Sheet

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MC9S12GRMV1 Datasheet, PDF (1169/1292 Pages) Freescale Semiconductor, Inc – MC9S12G Family Reference Manual and Data Sheet

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240 KByte Flash Module (S12FTMRG240K2V1)

FCMD

0x08

0x09

0x0B

0x0D

0x0E

0x10

0x11

0x12

Table 31-29. EEPROM Commands

Command

Erase All Blocks

Erase Flash Block

Unsecure Flash

Set User Margin

Level

Set Field Margin

Level

Erase Verify

EEPROM Section

Program

EEPROM

Erase EEPROM

Sector

Function on EEPROM Memory

Erase all EEPROM (and P-Flash) blocks.

An erase of all Flash blocks is only possible when the FPLDIS, FPHDIS, and FPOPEN

bits in the FPROT register and the DPOPEN bit in the EEPROT register are set prior to

launching the command.

Erase a EEPROM (or P-Flash) block.

An erase of the full EEPROM block is only possible when DPOPEN bit in the EEPROT

register is set prior to launching the command.

Supports a method of releasing MCU security by erasing all EEPROM (and P-Flash)

blocks and verifying that all EEPROM (and P-Flash) blocks are erased.

Speciï¬es a user margin read level for the EEPROM block.

Speciï¬es a ï¬eld margin read level for the EEPROM block (special modes only).

Verify that a given number of words starting at the address provided are erased.

Program up to four words in the EEPROM block.

Erase all bytes in a sector of the EEPROM block.

31.4.5 Allowed Simultaneous P-Flash and EEPROM Operations

Only the operations marked âOKâ in Table 31-30 are permitted to be run simultaneously on the Program

Flash and EEPROM blocks. Some operations cannot be executed simultaneously because certain hardware

resources are shared by the two memories. The priority has been placed on permitting Program Flash reads

while program and erase operations execute on the EEPROM, providing read (P-Flash) while write

(EEPROM) functionality.

Table 31-30. Allowed P-Flash and EEPROM Simultaneous Operations

EEPROM

Program Flash Read

Margin

Read1

Program

Sector

Erase

Mass

Erase2

Read

OK

OK

OK

Margin Read1

Program

Sector Erase

Mass Erase2

OK

1 A âMargin Readâ is any read after executing the margin setting commands

âSet User Margin Levelâ or âSet Field Margin Levelâ with anything but the

ânormalâ level speciï¬ed. See the Note on margin settings in Section 31.4.6.12

and Section 31.4.6.13.

2 The âMass Eraseâ operations are commands âErase All Blocksâ and âErase

Flash Blockâ

Freescale Semiconductor

MC9S12G Family Reference Manual, Rev.1.23

1171

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