S912XEG128J2VAL
| Model | S912XEG128J2VAL |
| Description | IC,MICROCONTROLLER,16-BIT,CPU12 CPU,CMOS,QFP,112PIN,PLASTIC |
| PDF file | Total 1327 pages (File size: 7M) |
| Chip Manufacturer | ROCHESTER |
Chapter 25 256 KByte Flash Module (S12XFTM256K2V1)
Table 25-76. EEPROM Emulation Query Command Error Handling
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
Register
Error Bit
Error Condition
Set if CCOBIX[2:0] != 000 at command launch
ACCERR
FSTAT
FPVIOL
MGSTAT1
MGSTAT0
FERSTAT
EPVIOLIF
None
None
None
None
Set if a Load Data Field command sequence is currently active
Set if command not available in current mode (see
Table 25-30)
25.4.2.22 Partition D-Flash Command
The Partition D-Flash command allows the user to allocate sectors within the D-Flash block for
applications and a partition within the buffer RAM for EEPROM access. The D-Flash block consists of 64
sectors with 256 bytes per sector. The Erase All Blocks command must be run prior to launching the
Partition D-Flash command.
Table 25-77. Partition D-Flash Command FCCOB Requirements
CCOBIX[2:0]
000
001
010
0x20
FCCOB Parameters
Not required
Number of 256 byte sectors for the D-Flash user partition (DFPART)
Number of 256 byte sectors for buffer RAM EEE partition (ERPART)
Upon clearing CCIF to launch the Partition D-Flash command, the following actions are taken to define a
partition within the D-Flash block for direct access (DFPART) and a partition within the buffer RAM for
EEE use (ERPART):
• Validate the DFPART and ERPART values provided:
— DFPART <= 128 (maximum number of 256 byte sectors in D-Flash block)
— ERPART <= 16 (maximum number of 256 byte sectors in buffer RAM)
— If ERPART > 0, 128 - DFPART >= 12 (minimum number of 256 byte sectors in the D-Flash
block required to support EEE)
— If ERPART > 0, ((128-DFPART)/ERPART) >= 8 (minimum ratio of D-Flash EEE space to
buffer RAM EEE space to support EEE)
• Erase verify the D-Flash block and the EEE nonvolatile information register
• Program DFPART to the EEE nonvolatile information register at global address 0x12_0000 (see
Table 25-7)
MC9S12XE-Family Reference Manual , Rev. 1.19
Freescale Semiconductor
947
