M16CSLASH26 datasheet(224/239 Pages) RENESAS

224 / 239 page

Renesas Technology Corp.

Appendix Standard Serial I/O Mode 1 (Flash Memory Version)

218

M16C/26 Group

SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

Under

development

Preliminary Specifications Rev. 0.9

Specifications in this manual are tentative and subject to change.

Full Status Check

Results from executed erase and program operations can be known by running a full status check.

Figure 1.22.13 shows a flowchart of the full status check and explains how to remedy errors which occur.

Figure 1.22.13. Full status check flowchart and remedial procedure for errors

Read status register

SR4=1 and SR5

=1 ?

Command

sequence error

YES

SR5=0?

YES

Block erase error

SR4=0?

YES

Program error

End (block erase, program)

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 a block erase error occur, the block in error

cannot be used.

Note: When one of SR5 to SR4 is set to 1, none of the program, erase all blocks, and

block erase commands is accepted. Execute the clear status register command

(5016) before executing these commands.

Execute the read lock bit status command (7116)

to see if the block is locked. After removing lock,

execute write operation in the same way. If the

error still occurs, the page in error cannot be

used.

M16C/26 데이터시트(PDF) 224 Page - Renesas Technology Corp