S912XEQ384J3MALR Freescale Semiconductor, S912XEQ384J3MALR Datasheet - Page 930

• Manufacturer Part Number: S912XEQ384J3MALR
• Description: S912XEQ Series 16 Bit 50 Mhz 384 KB Flash 24 KB Ram Microcontroller - LQFP-112
• Manufacturer: Freescale Semiconductor

Chapter 25 256 KByte Flash Module (S12XFTM256K2V1)
25.4.2.4
The Read Once command provides read access to a reserved 64 byte field (8 phrases) located in the
nonvolatile information register of P-Flash block 0. The Read Once field is programmed using the
Program Once command described in
from the Flash block containing the Program Once reserved field to avoid code runaway.
Upon clearing CCIF to launch the Read Once command, a Read Once phrase is fetched and stored in the
FCCOB indexed register. The CCIF flag will set after the Read Once operation has completed. Valid
phrase index values for the Read Once command range from 0x0000 to 0x0007. During execution of the
Read Once command, any attempt to read addresses within P-Flash block 0 will return invalid data.
25.4.2.5
The Load Data Field command is executed to provide FCCOB parameters for multiple P-Flash blocks for
a future simultaneous program operation in the P-Flash memory space.
930
128
FERSTAT
FERSTAT
Register
Register
FSTAT
Read Once Command
Load Data Field Command
Table 25-38. Erase Verify P-Flash Section Command Error Handling
CCOBIX[2:0]
EPVIOLIF
MGSTAT1
MGSTAT0
EPVIOLIF
ACCERR
Error Bit
Error Bit
FPVIOL
Table 25-39. Read Once Command FCCOB Requirements
000
001
010
011
100
101
Table 25-40. Read Once Command Error Handling
MC9S12XE-Family Reference Manual Rev. 1.24
None
Set if CCOBIX[2:0] != 001 at command launch
Set if a Load Data Field command sequence is currently active
Set if command not available in current mode (see
Set if an invalid phrase index is supplied
None
Set if any errors have been encountered during the read
Set if any non-correctable errors have been encountered during the read
None
Section
Read Once phrase index (0x0000 - 0x0007)
0x04
25.4.2.7. The Read Once command must not be executed
Read Once word 0 value
Read Once word 1 value
Read Once word 2 value
Read Once word 3 value
FCCOB Parameters
Error Condition
Error Condition
Not Required
Table
25-30)
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