Freescale Semiconductor MC68HC908MR32 Manual Do Utilizador

Memory

MC68HC908MR32 • MC68HC908MR16 Data Sheet, Rev. 6.1

Freescale Semiconductor

Figure 2-6. FLASH Block Protect Start Address

Refer to

Table 2-2

for examples of the protect start address.

2.8.7 Wait Mode

Putting the MCU into wait mode while the FLASH is in read mode does not affect the operation of the
FLASH memory directly, but there will not be any memory activity since the CPU is inactive.

The WAIT instruction should not be executed while performing a program or erase operation on the
FLASH. Otherwise, the operation will discontinue, and the FLASH will be on standby mode.

2.8.8 Stop Mode

Putting the MCU into stop mode while the FLASH is in read mode does not affect the operation of the
FLASH memory directly, but there will not be any memory activity since the CPU is inactive.

The STOP instruction should not be executed while performing a program or erase operation on the
FLASH, otherwise the operation will discontinue, and the FLASH will be on standby mode

NOTE

Standby mode is the power-saving mode of the FLASH module in which all
internal control signals to the FLASH are inactive and the current
consumption of the FLASH is at a minimum.

Table 2-2. Examples of Protect Start Address

BPR[7:0]

Start of Address of Protect Range

$00

The entire FLASH memory is protected.

$01 (0000 0001)

$8080 (1000 0000 1000 0000)

$02 (0000 0010)

$8100 (1000 0001 0000 0000)

and so on...

$FE (1111 1110)

$FF00 (1111 1111 0000 0000)

$FF

The entire FLASH memory is not protected.

Note: The end address of the protected range is always $FFFF.

FLBPR VALUE

16-BIT MEMORY ADDRESS

START ADDRESS OF FLASH

BLOCK PROTECT