r4f2426 Renesas Electronics Corporation., r4f2426 Datasheet - Page 1089

• Manufacturer Part Number: r4f2426
• Description: 16-bit Single-chip Microcomputer H8s Family / H8s/2400 Series
• Manufacturer: Renesas Electronics Corporation.

21.7
When an error occurs, the FMERSF or FMPRSF bit in FLMSTR becomes 1 to indicate
occurrence of the error. Read these status bits (full status check) to check the operation results.
Table 21.7 shows the errors and FLMSTR status and figure 21.7 shows a flowchart of full status
check processing and corrective actions for each error.
Table 21.7 Errors and Register Status
Note:
FMERSF Bit
(SR5)
1
1
0
State of FLMSTR
(Status Register)
*
Full Status Check
When H'xxFF is written in the second bus cycle of this command, the flash memory
enters the read array mode and the command code written in the first bus cycle is
ignored.
FMPRSF Bit
(SR4)
1
0
1
Error
Command
sequence error
Erase error
Programming
error
Error Conditions
•
•
•
•
•
When a command is not issued correctly
When an invalid value (a value other than
H'xxD0 or H'xxFF) is written in the second
bus cycle of a block erase command*
When a block erase command is issued but
the block is not erased correctly
When a block blank check command is
issued and the checked block is not blank
When a program command is issued but
automatic writing is not done correctly
Rev. 1.00 Sep. 19, 2008 Page 1061 of 1270
Section 21 Flash Memory
REJ09B0466-0100