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M58PR256J bảng dữ liệu(PDF) 100 Page - STMicroelectronics

tên linh kiện M58PR256J
Giải thích chi tiết về linh kiện  256 Mbit or 512 Mbit (x16, Multiple Bank, Multilevel, Burst) 1.8 V supply Flash memories
PDF  114 Pages
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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
Trang chủ  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M58PR256J bảng dữ liệu(HTML) 100 Page - STMicroelectronics

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 100 / 114 page
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Flowcharts and pseudo codes
M58PR256J, M58PR512J
100/114
Figure 23.
Block Erase and EFA Block Erase flowchart and pseudo code
1.
Any address within the bank can equally be used.
2.
If an error is found, the Status Register must be cleared before further Program/Erase operations.
Write 20h (Main Array)
or 24h (EFA) (1)
AI06174b
Start
Write Block
Address & D0h
Read Status
Register (1)
YES
NO
SR7 = 1
YES
NO
SR3 = 0
YES
SR4, SR5 = 1
VPP Invalid
Error (2)
Command
Sequence Error (2)
NO
NO
SR5 = 0
Erase Error (2)
End
YES
NO
SR1 = 0
Erase to Protected
Block Error (2)
YES
erase_command ( blockToErase )
/* EFA_erase_command (blockToErase) { */
writeToFlash (blockToErase, 0x20) ;
/* writeToFlash (blockToErase, 0x24) */
/* 20h is the command for Block Erase while 24h is the
command for Erase EFA Block*/
/*see note (1) */
writeToFlash (blockToErase, 0xD0) ;
/* only A12-A20 are significannt */
/* Memory enters read status state after
the Erase Command */
} while (status_register.SR7== 0) ;
do {
status_register=readFlash (blockToErase) ;
/* see note (1) */
/* E or G must be toggled*/
if (status_register.SR3==1) /*VPP invalid error */
error_handler ( ) ;
if ( (status_register.SR4==1) && (status_register.SR5==1) )
/* command sequence error */
error_handler ( ) ;
if (status_register.SR1==1) /*program to protect block error */
error_handler ( ) ;
if ( (status_register.SR5==1) )
/* erase error */
error_handler ( ) ;
}



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