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7641 Datasheet(PDF) 123 Page - Renesas Technology Corp

Part # 7641
Description  8-BIT SINGLE-CHIP MICROCOMPUTER
PDF  385 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

7641 Datasheet(HTML) 123 Page - Renesas Technology Corp

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Rev.2.00
Aug 28, 2006
page 106 of 113
7641 Group
REJ09B0336-0200
HARDWARE
FLASH MEMORY MODE
Full Status Check
Results from executed erase and program operations can be
known by running a full status check. Figure 100 shows a flow-
chart of the full status check and explains how to remedy errors
which occur.
Read status register
SR4 = 1 and
SR5 = 1 ?
NO
YES
SR5 = 0 ?
YES
Erase error
NO
SR4 = 0 ?
YES
NO
Command
sequence error
Program error
End (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 an erase error occur, the block in error
cannot be used.
Note: When one of SR5 to SR4 is set to “1” , none of the page read, program, erase all
blocks, and block erase commands is accepted. Execute the clear status register
command (5016) before executing these commands.
Should a program error occur, the block in error
cannot be used.
Fig. 100 Full status check flowchart and remedial procedure for errors



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