MC9S12HY64 Datasheet, PDF (577/792 Pages) Freescale Semiconductor, Inc – S12 Microcontrollers

48 KByte Flash Module (S12FTMRC48K1V1)
Field
1
DFDIE
0
SFDIE
Table 16-13. FERCNFG Field Descriptions
Description
Double Bit Fault Detect Interrupt Enable — The DFDIE bit controls interrupt generation when a double bit fault
is detected during a Flash block read operation.
0 DFDIF interrupt disabled
1 An interrupt will be requested whenever the DFDIF flag is set (see Section 16.3.2.8)
Single Bit Fault Detect Interrupt Enable — The SFDIE bit controls interrupt generation when a single bit fault
is detected during a Flash block read operation.
0 SFDIF interrupt disabled whenever the SFDIF flag is set (see Section 16.3.2.8)
1 An interrupt will be requested whenever the SFDIF flag is set (see Section 16.3.2.8)
16.3.2.7 Flash Status Register (FSTAT)
The FSTAT register reports the operational status of the Flash module.
Offset Module Base + 0x0006
R
W
Reset
7
CCIF
1
6
5
4
3
2
0
MGBUSY
RSVD
ACCERR
FPVIOL
0
0
0
0
0
1
0
MGSTAT[1:0]
0¹
0¹
= Unimplemented or Reserved
Figure 16-11. Flash Status Register (FSTAT)
1 _{Reset value can deviate from the value shown if a double bit fault is detected during the reset sequence (see Section 16.6).}
CCIF, ACCERR, and FPVIOL bits are readable and writable, MGBUSY and MGSTAT bits are readable
but not writable, while remaining bits read 0 and are not writable.
Table 16-14. FSTAT Field Descriptions
Field
7
CCIF
5
ACCERR
4
FPVIOL
Description
Command Complete Interrupt Flag — The CCIF flag indicates that a Flash command has completed. The
CCIF flag is cleared by writing a 1 to CCIF to launch a command and CCIF will stay low until command
completion or command violation.
0 Flash command in progress
1 Flash command has completed
Flash Access Error Flag — The ACCERR bit indicates an illegal access has occurred to the Flash memory
caused by either a violation of the command write sequence (see Section 16.4.3.2) or issuing an illegal Flash
command. While ACCERR is set, the CCIF flag cannot be cleared to launch a command. The ACCERR bit is
cleared by writing a 1 to ACCERR. Writing a 0 to the ACCERR bit has no effect on ACCERR.
0 No access error detected
1 Access error detected
Flash Protection Violation Flag —The FPVIOL bit indicates an attempt was made to program or erase an
address in a protected area of P-Flash or D-Flash memory during a command write sequence. The FPVIOL
bit is cleared by writing a 1 to FPVIOL. Writing a 0 to the FPVIOL bit has no effect on FPVIOL. While FPVIOL
is set, it is not possible to launch a command or start a command write sequence.
0 No protection violation detected
1 Protection violation detected
MC9S12HY/HA-Family Reference Manual, Rev. 1.04
Freescale Semiconductor
577