M16C26 Datasheet, PDF (205/239 Pages) Renesas Technology Corp – 16-BIT CMOS SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M16C/20 SERIES

Udenvdeelropment
Preliminary Specifications Rev. 0.9
Specifications in this manual are tentative and subject to change.
CPU Rewrite Mode (Flash Memory Version)
M16C/26 Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
(EW0 mode)
Start
FMR40=1
Write 'XX2016' (Note 1)
Write 'XXD016' to the
uppermost address
(Note 1)
NO
FMR00=1?
YES
Full Status Check
(Note 2, 4)
Block erase
completed
Interrupt (Note 3)
FMR41=1
NO
FMR46=1?
YES
Access to Flash Memory
FMR41=0
REIT
(EW1 mode)
Start
FMR40=1
Write 'XX2016' (Note 1)
Write 'XXD016' to the
uppermost address
(Note 1)
FMR41=0
Interrupt
Access to Flash Memory
REIT
NO
FMR00=1?
YES
Full Status Check
(Note 2, 4)
Block erase
completed
Note 1: Write value to highest even address within the block.
Note 2: If the error occurs, try to execute Clear Status Register command then
Block Erase command at least three times until erase error disappears.
Note 3: Please set interrupt vector table on RAM region with EW0 mode.
Note 4: Please refer to Figure 1.20.6, "Full status check flowchart and remedial
procedure for errors".
Figure 1.20.5. Block erase flowchart with erase suspend function
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