Chapter 24 128 KByte Flash Module (S12XFTM128K2V1)
MC9S12XE-Family Reference Manual Rev. 1.19
Freescale Semiconductor
833
P-Flash Sector
— The P-Flash sector is the smallest portion of the P-Flash memory that can be erased.
Each P-Flash sector contains 1024 bytes.
Program IFR
— Nonvolatile information register located in the P-Flash block that contains the Device
ID, Version ID, and the Program Once field. The Program IFR is visible in the global memory map by
setting the PGMIFRON bit in the MMCCTL1 register.
24.1.2
Features
24.1.2.1
P-Flash Features
•
128 Kbytes of P-Flash memory composed of two 64 Kbyte Flash blocks. The 64 Kbyte Flash
blocks are each divided into 64 sectors of 1024 bytes.
•
Single bit fault correction and double bit fault detection within a 64-bit phrase during read
operations.
•
Automated program and erase algorithm with verify and generation of ECC parity bits.
•
Fast sector erase and phrase program operation.
•
Ability to program up to one phrase in each P-Flash block simultaneously.
•
Flexible protection scheme to prevent accidental program or erase of P-Flash memory.
24.1.2.2
D-Flash Features
•
Up to 32 Kbytes of D-Flash memory with 256 byte sectors for user access
•
Dedicated commands to control access to the D-Flash memory over EEE operation
•
Single bit fault correction and double bit fault detection within a word during read operations
•
Automated program and erase algorithm with verify and generation of ECC parity bits
•
Fast sector erase and word program operation
•
Ability to program up to four words in a burst sequence
24.1.2.3
Emulated EEPROM Features
•
Up to 2 Kbytes of emulated EEPROM (EEE) accessible as 2 Kbytes of RAM
•
Flexible protection scheme to prevent accidental program or erase of data
•
Automatic EEE file handling using an internal Memory Controller
•
Automatic transfer of valid EEE data from D-Flash memory to buffer RAM on reset
•
Ability to monitor the number of outstanding EEE related buffer RAM words left to be
programmed into D-Flash memory
•
Ability to disable EEE operation and allow priority access to the D-Flash memory
•
Ability to cancel all pending EEE operations and allow priority access to the D-Flash memory
24.1.2.4
User Buffer RAM Features
•
Up to 2 Kbytes of RAM for user access
Because
of
an
order
from
the
United
States
International
Trade
Commission,
BGA-packaged
product
lines
and
part
numbers
indicated
here
currently
are
not
available
from
Freescale
for
import
or
sale
in
the
United
States
prior
to
September
2010:
S12XE
products
in
208
MAPBGA
packages
