3803 Datasheet, PDF (77/119 Pages) Renesas Technology Corp – SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

3803 Group (Spec.L)
Full Status Check
By performing full status check, it is possible to know the
execution results of erase and program operations. Figure 74
shows a full status check flowchart and the action to be taken
when each error occurs.
Read status register
SR4 = “1”
and
SR5 = “1”?
YES
NO
NO
SR5 = “0”?
YES
NO
SR4 = “0”?
YES
End (block erase, program)
Command
sequence error
Erase error
Program error
Execute the clear status register command (5016)
to clear the status register. Try performing the
operation one more time after confirming that the
command is entered correctly.
Should an erase error occur, the block in error
cannot be used.
Should a program error occur, the block in error
cannot be used.
Note: When one of SR5 and SR4 is set to “1”, none of the read array, program,
and block erase commands is accepted. Execute the clear status register
command (5016) before executing these commands.
Fig 74. Full status check flowchart and remedial procedure for errors
Rev.1.00 Apr 2, 2007 Page 77 of 117
REJ03B0212-0100